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prolyl
The acyl radical of proline. - p. dipeptidase an enzyme cleaving l-p.-amino acid bonds in dipeptides containing N-terminal p. residues. SYN: iminodipeptidase, prolinase, ...
prolylglycine dipeptidase
SYN: prolyl dipeptidase.
promastigote
Term now generally used instead of “leptomonad” or “leptomonad stage,” to avoid confusion with the flagellate genus Leptomonas. It denotes the flagellate stage of a ...
promegaloblast
The earliest of four maturation stages of the megaloblast. See erythroblast. SYN: pernicious anemia type rubriblast.
prometaphase
The stage of mitosis or meiosis in which the nuclear membrane disintegrates and the centrioles reach the poles of the cell, while the chromosomes continue to contract.
promethazine hydrochloride
An antihistaminic with antiemetic properties, often used to enhance the efficacy of narcotics.
promethazine theoclate
Promethiazine salt of 8-chlorotheophylline; an antihistaminic drug used for motion sickness.
promethestrol dipropionate
A synthetic estrogen derived from stilbene.
promethium
A radioactive element of the rare earth series, atomic no. 61; first chemically identified in 1945; 145Pm has the longest known half-life (17.7 years). [Prometheus, a Titan of G. ...
prominence
In anatomy, tissues or parts that project beyond a surface. SYN: prominentia [TA]. [L. prominentia] - Ammon p. an external p. in the posterior pole of the eyeball during early ...
prominens
Prominent; in anatomy, denoting a prominence. [L.]
Prominent vertebra
The 7th cervical (neck) vertebra (C7) is sometimes called the prominent vertebra because of the length of its spinous process (the projection off the back of the vertebral body). ...
prominentia
SYN: prominence. [L. fr. promineo, to jut out, be prominent] - p. canalis facialis [TA] SYN: prominence of facial canal. - p. canalis semicircularis lateralis [TA] SYN: ...
Prominentia laryngea
The prominence of the larynx, more commonly known as the Adam's apple. This familiar feature in front of the neck is due to forward protrusion of the largest cartilage of the ...
promitochondria
Mitochondrial precursors with little internal structure ( E.G., no cristae) and no proteins of electron transport. SYN: premitochondria.
PROMM
Acronym for proximal myotonic myopathy.
promonocyte
SYN: premonocyte.
promontorium
SYN: promontory. [L. a mountain ridge, a headland, fr. promineo, to jut out] - p. cavi tympani [TA] SYN: promontory of tympanic cavity. - p. ossis sacri [TA] SYN: sacral ...
promontory
An eminence or projection; a projection of a part. SYN: promontorium [TA]. [L. promontorium] - pelvic p. SYN: sacral p.. - sacral p. [TA] the most prominent anterior projection ...
Promoter
In molecular biology, a site on DNA to which the enzyme RNA polymerase can bind and initiate the transcription of DNA into RNA. * * * 1. In chemistry, a substance that ...
promotion
Stimulation of tumor induction, following initiation, by a promoting agent that may of itself be noncarcinogenic. - health p. according to the World Health Organization, the ...
promyelocyte
1. The developmental stage of a granular leukocyte between the myeloblast and myelocyte, when a few specific granules appear in addition to azurophilic ones. 2. A large ...
pronasion
The point of the angle between the septum of the nose and the surface of the upper lip, found at the point where a tangent applied to the nasal septum meets the upper lip. [ pro- ...
pronate
1. To perform pronation of the forearm or foot. 2. To assume, or to be placed in, a prone position. [L. pronatus, fr. prono, pp. -atus, to bend forward, fr. pronus, bent ...
Pronation
Rotation of the arm or leg inward. In the case of the arm, the palm of the hand will face posteriorly. * * * The condition of being prone; the act of assuming or of being placed ...
Pronation (anatomic orientation)
Rotation of the forearm and hand so that the palm is down (and the corresponding movement of the foot and leg with the sole down), as opposed to supination. For a more complete ...
pronator
A muscle that turns a part into the prone position. See muscle. [L.]
prone
Denoting: 1. The body when lying face downward. 2. Pronation of the forearm or of the foot. [L. pronus, bending down or forward]
Prone (anatomic orientation)
With the front or ventral surface downward (lying face down), as opposed to supine. For a more complete listing of terms used in medicine for spatial orientation, please see ...
pronephros
1. The definitive excretory organ of primitive fishes. SYN: head kidney. 2. In the embryos of higher vertebrates, a vestigial structure consisting of a series of tortuous ...
pronograde
Walking or resting with the body horizontal, denoting the posture of quadrupeds; opposed to orthograde. [L. pronus, inclined forward, + gradior, to walk]
pronometer
SYN: goniometer (3).
pronormoblast
The earliest of four stages in development of the normoblast. SEE ALSO: erythroblast. SYN: proerythroblast, rubriblast.
Prontosil
The first sulfa drug to be discovered. Largely of historic interest today. The discovery was made by the great German physician and chemist Gerhard Domagk (1895-1964). In 1925 ...
Pronucleus
A cell nucleus with a haploid set of chromosomes (23 chromosomes in humans) resulting from meiosis (germ-cell division). The male pronucleus is the sperm nucleus after it has ...
proofreading
The property of certain polymerases, e.g., DNA polymerase, to use their exonuclease activity to remove erroneously introduced bases and to replace them with the correct bases.
proopiomelanocortin
A large molecule found in the anterior and intermediate lobes of the pituitary gland, the hypothalamus, and other parts of the brain as well as in the lungs, gastrointestinal ...
prootic
In front of the ear. [ pro- + G. ous, ear]
propafenone
Antiarrhythmic agent classified as a class IC type, thus resembling flecainide and encainide. Blocks fast sodium channels and has been used in the treatment of ventricular ...
propagate
1. To reproduce; to generate. 2. To move along a fiber, e.g., propagation of the nerve impulse. [L. propago, pp. -atus, to generate, reproduce]
propagation
The act of propagating.
propagative
Relating to or concerned in propagation; denoting the sexual part of an animal or plant as distinguished from the soma.
propalinal
Back and forth; denoting a forward and backward movement. [ pro- + G. palin, backward]
propamidine
Active against Trypanosoma gambiense infections; also markedly bacteriostatic; used as a local antiinfective agent in 0.1% aqueous solution and against systemic fungal ...
propane
One of the alkane series of hydrocarbons.
propanedioic acid
SYN: malonic acid.
propanidid
A short-acting eugenol used intravenously for induction of general anesthesia.
propanoic acid
SYN: propionic acid.
propanol
SYN: propyl alcohol.
propanoyl
SYN: propionyl.
propantheline bromide
The isopropyl analogue of methantheline bromide; an anticholinergic agent.
proparacaine hydrochloride
A surface anesthetic agent used in ophthalmology. SYN: proxymetacaine hydrochloride.
propatyl nitrate
A coronary vasodilator.
propene
SYN: propylene.
propentdyopents
See bilirubinoids.
propenyl
The radical, –CH=CH–CH3.
propepsin
SYN: pepsinogen.
propeptone
A nondescript mixture of intermediate products in the conversion of native protein into peptone.
properdin
A globulin in normal serum involved in resistance to infection that participates, in conjunction with other factors, in an alternative pathway to the activation of the terminal ...
properitoneal
In front of the peritoneum.
prophage
SYN: probacteriophage. - defective p. defective bacteriophage.
prophase
The first stage of mitosis or meiosis, consisting of linear contraction and increase in thickness of the chromosomes (each composed of two chromatids) accompanied by ...
prophenpyridamine maleate
SYN: pheniramine maleate.
Prophylactic
A preventive measure. The word comes from the Greek for "an advance guard," an apt term for a measure taken to fend off a disease or another unwanted consequence. A prophylactic ...
Prophylactic cranial irradiation
: Radiation therapy to the head intended to prevent cancer from spreading (metastasizing) to the brain.
Prophylaxis
A measure taken for the prevention of a disease. For example, dental prophylaxis consists of removing plaque and cleaning the teeth to prevent cavities and gum disease. The word ...
propicillin
A semisynthetic acid-stable penicillin that may be more effective than penicillin G. SYN: α-phenoxypropylpenicillin potassium.
propiocortin
An endogenous polypeptide that might be a precursor to the enkephalins. Cf.:proenkephalin.
propiolactone
Used to sterilize plasma, vaccines, and tissue grafts.
propionate
A salt or ester of propionic acid.
Propionibacterium
A genus of nonmotile, non–spore-forming, anaerobic to aerotolerant bacteria (family Propionibacteriaceae) containing Gram-positive rods that are usually pleomorphic, ...
propionic acid
Methylacetic acid; ethylformic acid; found in sweat; elevated in cases of ketotic hyperglycinemia and in cases of biotin deficiency. SYN: propanoic acid.
propionic acidemia
SYN: ketotic hyperglycinemia.
propionyl
CH3CH2CO–; the acyl radical of propionic acid. SYN: propanoyl.
propionyl-CoA
The coenzyme A thioester derivative of propionic acid; an intermediate in the degradation of l-valine, l-isoleucine, l-threonine, l-methionine, and odd-chain fatty acid s; a ...
propionylglycine
A minor metabolite that accumulates in individuals with propionic acidemia.
propitocaine hydrochloride
SYN: prilocaine hydrochloride.
proplasia
That state of cell or tissue in which activity is increased above that of euplasia, i.e., characterized by stimulation, repair, or regeneration. [ pro- + G. plasso, to form]
proplasmacyte
A cell in the process of differentiating from a plasmablast to a mature plasma cell.
proplexus
The choroid plexus in the lateral ventricle of the brain.
propofol
An oil-in-water emulsion of 1,6-diisopropylphenol, a hypnotic with rapid onset and short duration of action; used intravenously for induction and maintenance of general ...
Proportional counter
A device for measuring radioactivity. More technically, a proportional counter counts the emission of radioactive particles which permits the discrimination between particles or ...
Proposita
A female through whom a family medically comes to light (is first ascertained). Also called the proband or index case. The male counterpart of a proposita is a propositus.
Propositus
A male through whom a family medically comes to light (is first ascertained). Also called the proband or index case. The feminine of propositus is proposita. * * * 1. ...
propoxyphene hydrochloride
A nonantipyretic, orally effective weak narcotic analgesic structurally related to methadone and used for the relief of mild to moderate pain; it is less effective than ...
propoxyphene napsylate
A weak narcotic analgesic. SYN: dextropropoxyphene napsylate.
propranolol hydrochloride
An adrenergic β-receptor blocking agent; used in the treatment of angina pectoris, hypertension, cardiac arrhythmias, and other conditions.
proprietary name
The protected brand name or trademark, registered with the U.S. Patent Office, under which a manufacturer markets its product. It is written with a capital initial letter and is ...
Proprioception
The ability to sense stimuli arising within the body. Even if you are blindfolded, you know through proprioception if your arm is above your head or hanging by your side. The word ...
proprioceptive
Capable of receiving stimuli originating in muscles, tendons, and other internal tissues. [L. proprius, one's own, + capio, to take]
proprioceptor
One of a variety of sensory end organs (such as the muscle spindle and Golgi tendon organ) in muscles, tendons, and joint capsules that sense position or state of contraction.
propriospinal
Relating especially or wholly to the spinal cord; specifically, denoting those nerve cells and their fibers that connect the different segments of the spinal cord with each other ...
proproteins
Inactive protein precursors; E.G., proinsulin.
proptometer
SYN: exophthalmometer. [ pro- + G. ptosis, a falling, + metron, measure]
proptosis
SYN: exophthalmos. [G. p., a falling forward]
proptotic
Referring to proptosis.
propulsion
The tendency to fall forward; responsible for the festination in paralysis agitans. [G. pro-pello, pp. -pulsus, to drive forth]
propyl
The alkyl radical of propane, CH3CH2CH2–. - p. alcohol a solvent for resins and cellulose esters. SYN: propanol. - p. gallate an antioxidant for emulsions. - p. ...
propylcarbinol
Primary butyl alcohol. See butyl alcohol.
propylene
Methylethylene; a gaseous olefinic hydrocarbon. SYN: propene. - p. glycol a solvent for several water-insoluble drugs intended for parenteral administration; an ingredient of ...
propylhexedrine
A sympathomimetic and local vasoconstrictor; often used by inhalation.
propyliodone
A radiopaque medium formerly used for bronchography.
propylparaben
An antifungal agent and pharmaceutical preservative. SYN: propyl hydroxybenzoate.
propylthiouracil
An antithyroid agent that inhibits the synthesis of thyroid hormones; used in the treatment of hyperthyroidism; a goitrogen.
propyromazine
An intestinal antispasmodic with anticholinergic properties.
prorennin
SYN: prochymosin.
prorsad
In a forward direction. [L. prorsum, forward, + ad, to]
prorubricyte
Basophilic normoblast. See erythroblast. [ pro- + rubricyte] - pernicious anemia type p. basophilic megaloblast. See erythroblast, megaloblast.
pros
1. (π) Referring to the nitrogen atom in the imidazole ring in histidine that is closest to the β-carbon. Cf.:tele. 2. p.-; Prefix for near or in front. [G. near]
proscillaridin
Prepared from squill, the sea onion Urginea maritima; a cardiotonic agent, used for the treatment of congestive heart failure.
proscolex
Seldom used term for the embryonic form of a tapeworm. [ pro- + G. skolex, a worm]
prosecretin
Unactivated secretin.
prosect
To dissect a cadaver or any part, that it may serve for a demonstration of anatomy before a class. [L. pro-seco, pp. -sectus, to cut]
prosector
One who prosects, or prepares the material for a demonstration of anatomy before a class.
prosectorium
A dissecting room; a place in which anatomical preparations are made for demonstration or for preservation in a museum. [L.]
prosencephalon
The anterior primitive cerebral vesicle and the most rostral of the three primary brain vesicles of the embryonic neural tube; it subdivides to form the diencephalon and ...
Proskauer
Bernhard, German bacteriologist, 1851–1915. See Voges-P. reaction.
prosodemic
Denoting a disease that is transmitted directly from person to person. [G. proso, forward, + demos, people]
prosody
The varying rhythm, stress, and frequency of speech that aids meaning transmission.
prosop-
See prosopo-.
prosopagnosia
Difficulty in recognizing familiar faces. [ prosop- + G. a- priv. + gnosis, recognition]
prosopagus
SYN: prosopopagus.
prosopectasia
Enlargement of the face, as in acromegaly. [ prosop- + G. ektasis, extension]
prosoplasia
Progressive transformation, such as the change of cells of the salivary ducts into secreting cells. See cytomorphosis. [G. proso, forward, + plasis, a molding]
prosopo-, prosop-
The face. SEE ALSO: facio-. [G. prosopon]
prosopoanoschisis
SYN: facial cleft. [prosopo- + G. ano, upward, + schisis, fissure]
prosopopagus
Unequal conjoined twins in which the parasite, in the form of a tumorlike mass, is attached to the orbit or cheek of the autosite. See conjoined twins, under twin. SYN: ...
prosoposchisis
Congenital facial cleft from mouth to the inner canthus of the eye. SYN: oblique facial cleft. [prosopo- + G. schisis, fissure]
prosopothoracopagus
Conjoined twins attached by the face and chest; a variety of cephalothoracopagus. See conjoined twins, under twin. [prosopo- + G. thorax, chest, + pagos, something fastened]
prostacyclin
A potent natural inhibitor of platelet aggregation and a powerful vasodilator. SYN: epoprostenol, epoprostenol sodium.
Prostaglandin
A variety of hormone-like substances that participate in a wide range of body functions such as the contraction and relaxation of smooth muscle, the dilation and constriction of ...
prostanoic acid
The 20-carbon acid that is the skeleton of the prostaglandins, with various hydroxyl and keto substitutions at positions 9, 11, and 15, and double bonds in the long aliphatic ...
prostanoids
Derivatives of prostanoic acid; e.g., prostaglandins, thromboxanes, etc.
prostat-
See prostato-.
prostata
SYN: prostate. [Mod. L. from G. prostates, one standing before]
prostatalgia
A rarely used term for pain in the area of the prostate gland. [ prostat- + G. algos, pain]
Prostate
: A gland within the male reproductive system that is located just below the bladder. Chestnut shaped, the prostate surrounds the beginning of the urethra, the canal that empties ...
Prostate acid phosphatase
: An enzyme produced by the prostate that is elevated in some patients with prostate cancer.
Prostate cancer gene
One of the genes that influences the origin and/or progression of prostate cancer, cancer of the prostate gland. Prostate cancer genes are scattered around in the human genome. ...
Prostate enlargement
Most prostatic enlargement is due to benign prostatic hyperplasia (BPH), a problem that bothers men increasingly with advancing age. The process of BPH generally begins in a ...
Prostate gland
: A gland within the male reproductive system that is located just below the bladder. Chestnut shaped, the prostate surrounds the beginning of the urethra, the canal that empties ...
Prostate, nodular hyperplasia
: Nonmalignant (noncancerous) enlargement of the prostate gland, a common occurrence in older men. It is also known as benign prostatic hyperplasia or hypertrophy (abbreviated ...
prostatectomy
Removal of a part or all of the prostate. [ prostat- + G. ektome, excision]
Prostatectomy, retropubic
Surgical removal of the prostate through an incision in the abdomen.
prostatic
Relating to the prostate.
Prostatic hyperplasia, benign (BPH)
A prostate problem that bothers men with age, BPH generally begins in a man's 30s, evolves slowly and only causes symptoms after 50. In BPH the normal elements of the prostate ...
Prostatic hypertrophy, benign (BPH)
: Nonmalignant (noncancerous) enlargement of the prostate gland, a common occurrence in older men. It is also known as benign prostatic hyperplasia (also abbreviated as BPH). ...
prostaticovesical
Relating to the prostate and the bladder.
prostatism
A clinical syndrome, occurring mostly in older men, usually caused by enlargement of the prostate gland and manifested by irritative ( nocturia, frequency, decreased voided ...
Prostatitis
Inflammation of the prostate gland, a very common health concern, accounting for up to 25% of all medical office visits by young and middle-age men for problems relating to the ...
Prostatitis, acute bacterial
Inflammation of the prostate gland of sudden (acute) onset due to bacterial infection. The symptoms include chills, fever, pain in the lower back and genital area, body aches, ...
Prostatitis, chronic bacterial
Longstanding bacterial infection of the prostate gland superimposed on a defect in the prostate. (The prostate is a small organ below the bladder which surrounds the urethra, the ...
Prostatitis, nonbacterial
Inflammation of the prostate not due to bacterial infection. The prostate is a walnut-sized organ below the male bladder that surrounds the urethra and contributes fluid to the ...
prostato-, prostat-
The prostate gland. [Med. L. prostata fr. G. prostates, one who stands before, protects]
prostatocystitis
Inflammation of the prostate and the bladder; cystitis by extension of inflammation from the prostatic urethra. [prostato- + G. kystis, bladder, + -itis, inflammation]
Prostatodynia
A type of inflammation of the prostate not due to bacterial infection and in which there are no objective findings, such as the presence of infection-fighting cells, in the urine ...
prostatolith
SYN: prostatic calculus. [prostato- + G. lithos, stone]
prostatolithotomy
Incision of the prostate for removal of a calculus. [prostato- + G. lithos, stone, + tome, incision]
prostatomegaly
Enlargement of the prostate gland. [prostato- + G. megas, large]
prostatomy
SYN: prostatotomy.
prostatorrhea
An abnormal discharge of prostatic fluid. [prostato- + G. rhoia, a flow]
prostatoseminalvesiculectomy
SYN: prostatovesiculectomy.
prostatotomy
An incision into the prostate. SYN: prostatomy. [prostato- + G. tome, incision]
prostatovesiculectomy
Surgical removal of the prostate gland and seminal vesicles. SYN: prostatoseminalvesiculectomy.
prostatovesiculitis
Inflammation of the prostate gland and seminal vesicles.
prosternation
SYN: camptocormia.
prostheon
SYN: prosthion.
Prosthesis
: An artificial substitute or replacement of a part of the body such as a tooth, eye, a facial bone, the palate, a hip, a knee or another joint, the leg, an arm, etc. A prosthesis ...
Prosthesis, auditory
A device that substitutes for or enhances the ability to hear. Commonly called a hearing aide.
Prosthetic
: Referring to a prosthesis, an artificial substitute or replacement of a part of the body such as a tooth, eye, a facial bone, the palate, a hip, a knee or another joint, the ...
Prosthetics
The art and science of developing artificial replacements for body parts. Depending on the type of prosthesis, prosthetics may be built and fitted/implanted in a hospital (as in ...
prosthetist
One skilled in constructing and fitting prostheses.
prosthetophacos
SYN: lenticulus. [G. prosthesis, an addition, + phakos, lens]
prosthion
The most anterior point on the maxillary alveolar process in the midline. SYN: alveolar point, prostheon. [G. ntr. of prosthios, foremost]
prosthodontia
SYN: prosthodontics. [L.]
prosthodontics
The science of and art of providing suitable substitutes for the coronal portions of teeth, or for one or more lost or missing teeth and their associated parts, in order that ...
Prosthodontist
: A dentist with special training in making replacements for missing teeth or other structures of the oral cavity to restore the patient's appearance, comfort, and/or health. The ...
Prosthogonimus macrorchis
A digenetic trematode (family Prosthogonimidae) located in the oviduct and bursa fabricii of poultry in North America, particularly common in states bordering the Great Lakes. ...
prosthokeratoplasty
The surgical technique involved in utilizing a keratoprosthesis.
prostration
A marked loss of strength, as in exhaustion. [L. pro-sterno, pp. -stratus, to strew before, overthrow] - heat p. heat exhaustion.
prot-
See proteo-, proto-.
protactinium
A radioactive element, atomic no. 91, atomic wt. 231.03588, formed in the decay of uranium and thorium; its most long-lived isotope, 231Pa, has a half-life of 32,500 years. ...
protalbumose
Intermediate products of protein digestion, derived from hemialbumose; soluble in water and not coagulable by heat, but precipitated by ammonium sulfate, cupric sulfate, and ...
protaminase
SYN: carboxypeptidase B.
protamine
Any of a class of proteins, highly basic because rich in l-arginine and simpler in constitution than the albumins and globulins, etc., found in fish spermatozoa in combination ...
protanomaly
A deficiency of color perception in which the red-sensitive pigment in cones is decreased. [G. protos, first, + anomalia, anomaly]
protanopia
A form of dichromatism characterized by absence of the red-sensitive pigment in cones, decreased luminosity for long wavelengths of light, and confusion in recognition of red ...
Protean
Very variable; easily changing; or continually changing. Protean is not to be confused with protein (a member of a large group of chemicals necessary to and found in all living ...
Protease
An enzyme that can split a protein into peptides (from whence the protein was originally created). * * * Descriptive term for proteolytic enzymes, both endopeptidases and ...
protection
SYN: protective block. [see protective]
protector
A cover or shield. [L.L. protectus from pp. protegere, to protect, to cover over] - hearing protectors occlusive devices for the external auditory canal made of pliable material ...
Proteeae
A tribe within the bacterial family Enterobacteriaceae that includes the three genera : Proteus, Morganella, and Providencia.
Protein
A large molecule composed of one or more chains of amino acids in a specific order determined by the base sequence of nucleotides in the DNA coding for the protein. Proteins are ...
Protein C
A vitamin K-dependent protein in plasma that enters into the cascade of biochemical events leading to the formation of a clot.
Protein C deficiency
Protein C is a protein in plasma that enters into the cascade of biochemical events leading to the formation of a clot. Deficiency of protein C results in thrombotic (clotting) ...
protein hydrolysate
A sterile solution of amino acid s and soft-chain peptides prepared from a suitable protein by acid or enzymatic hydrolysis; used intravenously for the maintenance of positive ...
Protein malnutrition
Insufficient intake of nitrogen-containing food (protein) to maintain a nitrogen balance or nitrogen equilibrium. Children are particularly prone to develop protein ...
Protein requirements, infant
Proteins contain different amino acids that are linked together. Proteins provide both calories and the amino acid building blocks that are necessary for proper growth. The ...
Protein ZIP code
An informal name for a molecular cell biology system of signals or "address tags" that guide the movement of a protein within a cell. In more technical terms, protein ZIP codes* ...
Protein, C-reactive (CRP)
A plasma protein that rises in the blood with the inflammation from certain conditions. C-reactive protein is one of the plasma proteins known as acute- phase proteins: proteins ...
Protein, proteolipid (PLP)
The most abundant protein of the myelin sheath (the covering of the nerves) in the central nervous system (CNS). The gene that codes for PLP is on the X chromosome. Mutations in ...
Protein-calorie malnutrition
Severe deficiency of protein + inadequate caloric intake = kwashiorkor.
Protein-losing enteropathy
Condition in which plasma protein is lost to excess into the intestine. This can be due to diverse causes including gluten enteropathy, extensive ulceration of the intestine, ...
proteinaceous
Resembling a protein; possessing, to some degree, the physicochemical properties characteristic of proteins.
proteinase
SYN: endopeptidase.
proteinogenic
SYN: proteogenic.
proteinoids
Artificially synthesized heteropoly(amino acids).
proteinosis
A state characterized by disordered protein formation and distribution, particularly as manifested by the deposition of abnormal proteins in tissues. [protein + G. -osis, ...
Proteins
Large molecules composed of one or more chains of amino acids in a specific order determined by the base sequence of nucleotides in the DNA coding for the protein. Proteins are ...
Proteins, acute-phase
Proteins whose plasma concentrations increase (or decrease) by 25% or more during certain inflammatory disorders. C-reactive protein (CRP) is perhaps the best known of ...
Proteins, G
These molecules have been described as “biological traffic lights.” Located inside the cell, G proteins are able respond to signals outside the cell—light, smell, ...
Proteinuria
Excess protein in the urine. Some protein is normal in the urine. Too much means protein is leaking through the kidney, most often through the glomeruli. The main protein in ...
protensity
The time attribute of a mental process; the attribute of a mental process characterized by its temporality or movement forward in time. [L. protendo (-tensum), to extend]
proteoclastic
SYN: proteolytic. [proteo- + G. klastos, broken]
proteogenic
Capable of producing proteins. SYN: proteinogenic.
proteoglycan I
SYN: biglycan.
proteoglycans
Glycoaminoglycans (mucopolysaccharides) bound to protein chains in covalent complexes; occur in the extracellular matrix of connective tissue.
proteohormone
Obsolete term for a hormone possessing a protein structure.
Proteolipid protein (PLP)
The most abundant protein of the myelin sheath (the covering of the nerves) in the central nervous system (CNS). The gene that codes for PLP is on the X chromosome. Mutations in ...
proteolipids
A class of lipid-soluble proteins found in brain tissue, insoluble in water but soluble in chloroform-methanol-water mixtures.
proteolysis
The decomposition of protein; primarily via the hydrolysis of peptide bonds, both enzymatically and nonenzymatically. [proteo- + G. lysis, dissolution]
proteolytic
Relating to or effecting proteolysis. SYN: proteoclastic.
Proteome
All of the proteins produced by a given species, just as the genome is the totality of the genetic information possessed by that species. The term "proteome" was first coined from ...
proteometabolic
Relating to the metabolism of proteins.
proteometabolism
SYN: protein metabolism.
Proteomics
The study of the proteome, all of the proteins produced by a given species. (The proteome is to protein as the genome is to DNA.) The term " proteome" was first coined from the ...
Proteomyxidia
Former name for Eumycetozoea. [Proteus + G. myxa, mucus]
proteopectic, proteopexic
Relating to proteopexis.
proteopepsis
The digestion of protein. [proteo- + G. pepsis, digestion]
proteopexis
The fixation of protein in the tissues. [proteo- + G. pexis, fixation]
proteose
A nondescript mixture of intermediate products of proteolysis between protein and peptone. - primary p. the first result of hydrolysis of metaprotein; two stages, ...
proteosome
A cluster of genes that encode components of the cell cytosolic proteolytic complex, a set of proteins thought to be involved in cellular processing and transport of peptides ...
Proteus
1. A former genus of the Sarcodina, now termed Amoeba. 2. A genus of motile, peritrichous, nonsporeforming, aerobic to facultatively anaerobic bacteria (family ...
Proteus syndrome
A disturbance of cell growth including benign tumors under the skin, overgrowth of the body, often more on one side than the other (hemihypertrophy), and overgrowth of fingers ...
prothipendyl
An antipsychotic.
prothrombase
See factor X.
Prothrombin
Prothrombin is a coagulation (clotting) factor. It is needed for the normal clotting of blood. There is a cascade of biochemical events that leads to the formation of the final ...
Prothrombin time
A clotting test, the prothrombin time is done to test the integrity of part of the clotting scheme. The prothrombin time is commonly used as a method of monitoring the ...
prothrombinase
SYN: factor X.
prothrombinogen
SYN: factor VII.
prothrombinopenia
SYN: hypoprothrombinemia.
prothrombokinase
SYN: factor V, factor VIII.
protirelin
A synthetic form of thyroliberin.
protist
A member of the kingdom Protista.
Protista
A kingdom of both plantlike and animallike eucaryotic unicellular organisms, either in the form of solitary organisms, e.g., protozoa, or colonies of cells lacking true ...
protium
SYN: hydrogen-1.
proto-, prot-
The first in a series; the highest in rank. [G. protos, first]
Proto-oncogene
A normal gene involved in cell division or proliferation which, when altered by mutation, becomes an oncogene that can contribute to cancer.
protoactinium
SYN: protactinium.
protoalbumose
SYN: protalbumose.
protoalkaloid
A biogenic amine serving as a precursor of an alkaloid.
protobiology
SYN: bacteriophagology.
protocatechuic acid
Oxidation product of epinephrine.
protocol
A precise and detailed plan for the study of a biomedical problem or for a regimen of therapy. - Bruce p. a method of graduated, increasingly strenuous exercise testing to ...
protocone
The mesiolingual cusp of an upper molar tooth in a mammal. [proto- + G. konos, cone]
protoconid
The mesiolingual cusp of a lower molar tooth in a mammal.
protocoproporphyria
Enhanced fecal excretion of proto- and coproporphyrins. - p. hereditaria SYN: variegate porphyria.
Protoctista
A kingdom of eukaryotes incorporating the algae and the protozoans that comprise the presumed ancestral stocks of the fungi, plant, and animal kingdoms; they lack the ...
protoderm
The undifferentiated cells of very young embryos, from which the primary germ layers will evolve. [proto- + G. derma, skin]
protodiastolic
Early diastolic, relating to the beginning of cardiac diastole.
protoduodenum
The first part of the duodenum, which extends from the gastroduodenal pylorus as far as the major duodenal papilla and develops from the caudal foregut of the embryo; it has ...
protoerythrocyte
A primitive erythroblast.
protofilament
Basic element of a contractile flagellar microtubule, approximately 5 nm thick. [proto- + L. filum, a thread]

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