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mondofacto - Online Medical Dictionary
Category: Health and Medicine > Medical Dictionary
Date & country: 26/01/2008, UK
Words: 116197
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pyrophosphatases<enzyme> A group of enzymes within the class EC 3.6.1.- that catalyze the hydrolysis of diphosphate bonds, chiefly in nucleoside di- and triphosphates. They may liberate either a mono- or diphosphate. ... Registry number: EC 3.6.1.- ... (12 Dec 1998) ...
pyrophosphate translocase<enzyme> A component of the glucose-6-phosphatase (g6pase, EC 3.1.3.9) enzyme complex; facilitates the transfer of pyrophosphate between the cell cytosol and the lumen of the endoplasmic reticulum where the g6pase enzyme is situated ... Registry number: EC 2.7.- ... (26 Jun 1999) ...
pyrophosphate-nucleoside kinase<enzyme> From acholeplasma laidlawii; phosphorylates adenosine, inosine, and guanosine to the corresponding mononucleotides ... Registry number: EC 2.7.1.- ... Synonym: ppi dependent nucleoside kinase ... (26 Jun 1999) ...
pyrophosphokinasesEnzymes (sub-subclass EC 2.7.6) transferring a pyrophosphoric group (e.g., phospho-alpha-d-ribosyl pyrophosphate synthetase). ... Synonym: pyrophosphotransferases. ... (05 Mar 2000) ...
pyrophosphomevalonate decarboxylase<enzyme> Chemical name: mevalonate-5-pyrophosphate decarboxylase ... Registry number: EC 4.1.1.33 ... Synonym: mevpp decarboxylase, mevalonate pyrophosphate decarboxylase, diphosphomevalonate decarboxylase ... (26 Jun 1999) ...
pyrophosphoric acidH4P2O7;an anhydride of phosphoric acid obtained by heating phosphoric acid to 213°C; it forms pyrophosphates with bases, and its esters are important in energy metabolism and in biosynthesis. ... (05 Mar 2000) ...
pyrophosphorylasesTrivial name applied to the nucleotidyltransferases that catalyze the transfer of the AMP of ATP to another residue with the release of inorganic pyrophosphate, or the attachment of a nucleoside pyrophosphate to a polynucleotide with release of inorganic orthophosphate. ... (05 Mar 2000) ...
pyrophosphotransferasesSynonym for pyrophosphokinases ... Enzymes (sub-subclass EC 2.7.6) transferring a pyrophosphoric group (e.g., phospho-alpha-d-ribosyl pyrophosphate synthetase). ... Synonym: pyrophosphotransferases. ... (05 Mar 2000) ...
pyropoikilocytosisA rare recessive disorder manifested by severe haemolysis, marked poikilocytosis, and a characteristic sensitivity of the red cells to heat-induced fragmentation in vitro; apparently due to a defect in spectrin self-association. ... Synonym: hereditary pyropoikilocytosis. ... (05 Mar 2000) ...
pyroptothymiaRarely used term for a delusion in which one imagines being surrounded by flames. ... Origin: pyro-+ G. Ptoeo, to frighten, + thymos, mind ... (05 Mar 2000) ...
pyrosis<symptom> Heartburn, a burning sensation in the epigastric region of the abdomen. ... Origin: Gr. Pyrosis = burning ... (18 Nov 1997) ...
Pyrostase polymerase<enzyme> A thermostable polymerase from thermus flavus; has 3' to 5' exonuclease activity ... Registry number: EC 2.7.7.- ... (26 Jun 1999) ...
pyrosulphuric<chemistry> Pertaining to, or designating, an acid called also disulphuric acid) obtained by distillation of certain sulphates, as a colourless, thick, oily liquid, H2S2O7 resembling sulphuric acid. It is used in the solution of indigo, in the manufacture of alizarin, and in dehydration. ... Origin: Pyro- + -sulphuric. ... Source: Websters Dict …
pyrotherapyTreatment of disease by inducing an artificial fever in the patient. ... Synonym: therapeutic fever. ... (05 Mar 2000) ...
pyrovalerone hydrochloride4'-Methyl-2-(1-pyrrolidinyl)valerophenone hydrochloride;an analeptic. ... (05 Mar 2000) ...
pyroxene<chemical> A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90 deg, and also in massive forms which are often laminated. It varies in colour from white to dark green and black, and includes many varieties differing in colour and composition, as diopside, malacolite, salite, coccolite, augite, etc. They are a …
pyroxylic spiritSynonym for methyl alcohol ... CH3OH;a flammable, toxic, mobile liquid, used as an industrial solvent, antifreeze, and in chemical manufacture; ingestion may result in severe acidosis, visual impairment, and other effects on the central nervous system. ... Synonym: carbinol, methanol, pyroligneous alcohol, pyroligneous spirit, pyroxylic spirit, wood …
pyrrobutamine phosphate1-[4-(p-Chlorophenyl)-3-phenyl-2-butenyl]-pyrrolidine diphosphate;an antihistamine. ... (05 Mar 2000) ...
pyrrol<chemistry> A nitrogenous base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colourless liquid, C4H5N, having on odour like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colours a splinter of wood moistened with hydrochlo …
pyrrol blueC4OH3ON3O6Na;an acid triarylmethane dye employed as a vital dye and as an elastin stain. ... Synonym: Isamine blue. ... (05 Mar 2000) ...
pyrrol cellA cell of the mononuclear macrophage system that has a special affinity for pyrrol blue, taking up the dye by a process of pinocytosis. ... (05 Mar 2000) ...
pyrrolaseSynonym for tryptophan 2,3-dioxygenase ... An oxidoreductase catalyzing the reaction of l-tryptophan and O2 to produce l-N-formylkynurenine; an adaptive enzyme, the level (in the liver) being controlled by adrenal hormones; a step in tryptophan catabolism; also, a step in the synthesis of NAD+ from tryptophan. ... Synonym: pyrrolase, tryptophan oxyge …
pyrroleDivinylenimine;a heterocyclic compound found in many biologically important substances. ... Synonym: azole, imidole. ... (05 Mar 2000) ...
pyrrole nucleusOf porphyrins, a cyclic tetrapyrrole; four pyrrole groups joined into a ring structure by way of -CH== (methylidyne) bridges between the a position of one pyrrole and the a' position of another pyrrole, the fourth pyrrole being joined to the first. ... See: porphin, porphyrin. ... (05 Mar 2000) ...
pyrrole ring<biochemistry, chemistry> A heterocyclic ring structure, found in many important biological pigments and structures that involve an activated metal ion, for example chlorphyll, hem. ... (18 Nov 1997) ...
pyrrole-2-carboxylate monooxygenase<enzyme> Consists of 18.7- and 54-kD subunits; the 18.7-kD subunit is an NADH-oxidase; the 54-kD subunit requires NADH and fad; isolated from rhodococcus ... Registry number: EC 1.14.13.- ... Synonym: pyrrole-2-cooh monooxygenase ... (26 Jun 1999) ...
pyrrolidine1. Tetrahydropyrrole;pyrrole to which four H atoms have been added; the structural basis of proline and hydroxyproline. ... 2. A class of alkaloids containing a pyrrolidine moiety or a pyrrolidine derivative. ... (05 Mar 2000) ...
pyrrolidine-2-carboxylateSynonym for proline ... <amino acid> One of the 20 amino acids directly coded for in proteins. Structure differs from all the others, in that its side chain is bonded to the nitrogen of the _ amino group, as well as the _ carbon. This makes the amino group a secondary amine and so proline is described as an imino acid. Has strong influence on …
pyrrolidinonesA group of compounds that are derivatives of oxo-pyrrolidines. A member of this group is 2-oxo pyrrolidine, which is an intermediate in the manufacture of polyvinylpyrrolidone. ... (12 Dec 1998) ...
pyrrolidone2-Pyrrolidinone; 2-ketopyrrolidine; 2-oxopyrrolidine;an industrial solvent, plasticiser, and coalescing agent. ... (05 Mar 2000) ...
pyrrolidone-5-carboxylateSynonym for 5-oxoproline ... A keto derivative of proline that is formed nonenzymatically from glutamate, glutamine, and gamma-glutamylated peptides; it is also produced by the action of gamma-glutamylcyclotransferase; elevated levels of 5-oxoproline are often associated with problems of glutamine or glutathione metabolism. ... Synonym: 5-pyrrolidone …
pyrrolidonecarboxylic acid<chemical> A keto derivative of proline. Elevated levels of pyrrolidonecarboxylic acid are often associated with problems of glutamine or glutathione metabolism. ... Chemical name: L-Proline, 5-oxo- ... (12 Dec 1998) ...
pyrroline carboxylate reductases<enzyme> A group of enzymes that catalyze the reduction of 1-pyrroline carboxylate to proline in the presence of NAD(p)h. Includes both the 2-oxidoreductase (ec 1.5.1.1) and the 5-oxidoreductase (ec 1.5.1.2). The former also reduces 1-piperidine-2-carboxylate to pipecolate and the latter also reduces 1-pyrroline-3-hydroxy-5-carboxylate to hyd …
pyrroline-2-carboxylate reductaseAn oxidoreductase reducing 1-pyrroline-2-carboxylate to l-proline with NAD(P)H. ... Synonym: proline dehydrogenase, proline oxidase. ... (05 Mar 2000) ...
pyrroline-5-carboxylate reductaseAn oxidoreductase reversibly reducing 1-pyrroline-5-carboxylate to l-proline with NAD(P)H; a deficiency of this enzyme is associated with type I hyperprolinaemia. ... Synonym: proline dehydrogenase, proline oxidase. ... (05 Mar 2000) ...
pyrrolizidine alkaloids<chemical> Alkaloids found in various species of senecio and other plants. There are at least ten different chemicals, many of them hepatotoxic, teratogenic, and carcinogenic. The plants may cause damage in grazing herds, but no longer have medical use. ... Pharmacological action: carcinogens. ... (12 Dec 1998) ...
pyrrolnitrin<chemical> 3-chloro-4-(3-chloro-2-nitrophenyl)pyrrole. Antifungal antibiotic isolated from pseudomonas pyrrocinia. It is effective mainly against trichophyton, microsporium, epidermophyton, and penicillium. ... Pharmacological action: antibiotics, antifungal. ... Chemical name: 1H-Pyrrole, 3-chloro-4-(3-chloro-2-nitrophenyl)- ... (12 Dec 1998)
pyruvaldehyde
<chemical> An organic compound used often as a reagent in organic synthesis, as a flavoring agent, and in tanning. It has been demonstrated as an intermediate in the metabolism of acetone and its derivatives in isolated cell preparations, in various culture media, and in vivo in certain animals. ... Chemical name: Propanal, 2-oxo- ... (12 Dec 1 …
pyruvaldoxine
Synonym for isonitrosoacetone ... CH3CO-CH==NOH; propanone 1-oxine;a cholinesterase reactivator that can penetrate the blood-brain barrier readily and cause significant reactivation of phosphorylated acetylcholinesterase in the central nervous system; used to protect human beings and animals against otherwise lethal poisoning with organophosphorous …
pyruvate
<biochemistry> Pyruvate is the final product of glycolysis. You get two molecules of pyruvate for every molecule of glucose that goes through glycolysis. ... (22 Aug 1998) ...
pyruvate carboxylase
<enzyme> An enzyme that catalyses the formation of oxaloacetate from pyruvate, carbon dioxide and ATP in gluconeogenesis. ... (18 Nov 1997) ...
pyruvate carboxylase deficiency
An autosomal recessive pyruvate metabolism disorder resulting from absent or deficient expression of pyruvate carboxylase activity. Decreased production of oxaloacetate leads to decreased gluconeogenesis, thereby causing fasting hypoglycaemia, lactic acid acidosis, and decreased synthesis of amino acid neurotransmitters. Clinical presentations incl …
pyruvate decarboxylase
<enzyme> Catalyses the decarboxylation of an alpha keto acid to an aldehyde and carbon dioxide. Thiamine pyrophosphate is an essential cofactor. In lower organisms, which ferment glucose to ethanol and carbon dioxide, the enzyme irreversibly decarboxylates pyruvate to acetaldehyde. ... Registry number: EC 4.1.1.1 ... (12 Dec 1998) ...
pyruvate dehydrogenase
<enzyme> A complex multienzyme system that catalyses the conversion of (pyruvate + CoA + NAD) to (acetyl CoA + CO2 + NAD). ... (18 Nov 1997) ...
pyruvate dehydrogenase (cytochrome)
An oxidoreductase catalyzing reaction between ferricytochrome b1 and pyruvate to yield acetate and CO2, and ferrocytochrome b1. ... (05 Mar 2000) ...
pyruvate dehydrogenase (lipoamide)
An oxidoreductase catalyzing conversion of pyruvate and (oxidised) lipoamide to CO2 and S6-acetyldihydrolipoamide in two successive reactions: the first between pyruvate and thiamin pyrophosphate to yield CO2 and alpha-hydroxyethylthiamin pyrophosphate (active pyruvate); the second between the last named and lipoamide to regain the thiamin pyrophos …
pyruvate dehydrogenase complex
Synonym for pyruvate dehydrogenase ... <enzyme> A complex multienzyme system that catalyses the conversion of (pyruvate + CoA + NAD) to (acetyl CoA + CO2 + NAD). ... (18 Nov 1997) ...
pyruvate kinase
<enzyme> ATP:pyruvate 2-o-phosphotransferase. A phosphotransferase that catalyses reversibly the phosphorylation of pyruvate to phosphoenolpyruvate in the presence of ATP. It has four isozymes (l, r, m1, and m2). Deficiency of the enzyme results in haemolytic anaemia. ... Registry number: EC 2.7.1.40 ... (12 Dec 1998) ...
pyruvate kinase deficiency
A disorder in which there is a deficiency of pyruvate kinase in red blood cells; characterised by haemolytic anaemia varying in degree from one patient to another; autosomal recessive inheritance. ... (05 Mar 2000) ...
pyruvate kinase phosphatase
<enzyme> Reactivates pyruvate kinase ... Registry number: EC 3.1.3.- ... (26 Jun 1999) ...
pyruvate metabolism, inborn errors
Hereditary disorders of pyruvate metabolism. They are difficult to diagnose and describe because pyruvate is a key intermediate in glycolysis, gluconeogenesis, and the tricarboxylic acid cycle. Some inherited metabolic disorders may alter pyruvate metabolism indirectly. Disorders in pyruvate metabolism appear to lead to deficiencies in neurotransmi …
pyruvate oxidase
<enzyme> Registry number: EC 1.2.3.3 ... (12 Dec 1998) ...
pyruvate oxidation factor
Synonym for lipoic acid ... <biochemistry> 1,2 dithiolane 3 valeric acid. Regarded as a coenzyme in the oxoglutarate dehydrogenase complex of the citric acid cycle. Involved generally in oxidative decarboxylations of _ keto acids. A growth factor for some organisms. ... (18 Nov 1997) ...
pyruvate-formate-lyase-deactivase
<chemical> Encoded by adhe gene product from E coli; pfla (radical form) yields pfl (non-radical form) in presence of fe++, nad and CoA and the multienzyme complex consisting of alcohol plus acetaldehyde-CoA dehydrogenase activities ... Synonym: pfl-deactivase, adhe multienzyme, adhe gene product ... (26 Jun 1999) ...
pyruvate, orthophosphate dikinase
<enzyme> An enzyme that catalyses the reaction of ATP, pyruvate, and orthophosphate to form AMP plus phosphoenolpyruvate plus pyrophosphate. ... Chemical name: ATP:pyruvate, orthophosphate phosphotransferase ... Registry number: EC 2.7.9.1 ... (12 Dec 1998) ...
pyruvic acid
An intermediate compound in the metabolism of carbohydrates, proteins, and fats. In thiamine deficiency, its oxidation is retarded and it accumulates in the tissues, especially in nervous structures. ... (12 Dec 1998) ...
pyruvic aldehyde
Synonym for methylglyoxal ... CH3-CO-CHO; Pyruvaldehyde;the aldehyde of pyruvic acid; an intermediate of carbohydrate metabolism in certain organisms. ... Synonym: pyruvic aldehyde. ... Methylglyoxal bis(guanylhydrazone), 1,1'-[(methylethanediylidene)dinitrilo]diguanidine;an antineoplastic agent. ... (05 Mar 2000) ...
pyruvic-malic carboxylase
Synonym for malate dehydrogenase ... <enzyme> An enzyme that catalyses the conversion of (s)-malate and NAD+ to oxaloacetate and NADH. ... Chemical name: (S)-Malate:NAD+ oxidoreductase ... Registry number: EC 1.1.1.37 ... (12 Dec 1998) ...
pyrvinium compounds
<chemical> Pharmacological action: antinematodal agent. ... (12 Dec 1998) ...
pyrvinium pamoate
6-(dimethylamino)-2-[2-(2,5-dimethyl-1-phenylpyrrol-3-yl)-vinyl]-1-methylquinolinium 4,4'-methylenebis[3-hydroxy-2-naphthoate] (2:1);a highly effective drug used in the eradication of human pinworms. ... Synonym: viprynium embonate. ... (05 Mar 2000) ...
pythagorean
Of or pertaining to Pythagoras (a Greek philosopher, born about 582 b. C), or his philosophy. 'The central thought of the Pythagorean philosophy is the idea of number, the recognition of the numerical and mathematical relations of things.' ... <geometry> Pythagorean proposition, the commonly received system of astronomy, first taught by Pythag …
pythium
A mastigomycotina genus of destructive root-parasitic fungi including forms that cause damping-off of seedlings. ... (12 Dec 1998) ...
Pythium insidiosum
A species of fungi found in water or wet soil, and a cause of hyphomycosis or pythiosis. ... Synonym: Hyphomyces destruens. ... (05 Mar 2000) ...
pythocenic
<biology> Producing decomposition, as diseases which are supposed to be accompanied or caused by decomposition. ... Origin: Gr. To rot + origin. ... (22 Aug 1998) ...
pythogenesis
1. Origination from decaying matter. ... 2. The causation of decay. ... Origin: G. Pytho, to decay, + genesis, origin ... (05 Mar 2000) ...
pythogenic
Pythogenous ... Originating from filth or putrescence. ... (05 Mar 2000) ...
python
1. <zoology> Any species of very large snakes of the genus Python, and allied genera, of the family Pythonidae. They are nearly allied to the boas. Called also rock snake. ... The pythons have small pelvic bones, or anal spurs, two rows of subcaudal scales, and pitted labials. They are found in Africa, Asia, and the East Indies. ... 2. A divine …
pyuria
<nephrology> The production of urine which contains white blood cells. ... Examples which may result in pyuria include, urinary tract infection, tuberculosis, cancer and acute glomerulonephritis. ... Origin: Gr. Ouron = urine ... (27 Sep 1997) ...
pyx
1. The box, case, vase, or tabernacle, in which the host is reserved. ... 2. A box used in the British mint as a place of deposit for certain sample coins taken for a trial of the weight and fineness of metal before it is sent from the mint. ... 3. The box in which the compass is suspended; the binnacle. ... 4. <anatomy> Same as Pyxis. Pyx cloth …
pyxidium
<botany> A pod which divides circularly into an upper and lower half, of which the former acts as a kind of lid, as in the pimpernel and purslane. ... The theca of mosses. ... Origin: NL, fr. Gr, dim. A a box. See Pyx. ... (22 Aug 1998) ...
PZ-PLGPA peptidase
<enzyme> Endopeptidase from treponema denticola ... Registry number: EC 3.4.21.- ... (26 Jun 1999) ...
Q angle
<anatomy> The angle formed by lines representing the resultant pull of the quadriceps muscle and the axis of the patellar tendon. ... (05 Mar 2000) ...
q arm
<cell biology> The long arm of a chromosome. All human chromosomes have 2 arms: the short (p) arm and the long (q) arms. ... (12 Dec 1998) ...
Q bands
<cell biology> The alternating bright and dull fluorescent bands seen on chromosomes under ultraviolet light after the chromosomes are stained with quinacrine. The Q stands for quinacrine, an agent used as an antimalarial agent and, in the laboratory, as a fluorescent dye. ... (12 Dec 1998) ...
q beta phage
<molecular biology> A single-stranded RNA phage that specifically infects enterobacteria containing the f plasmid. It is widely used to study RNA phage and bacterial cell function. ... (10 Oct 1997) ...
q beta replicase
<enzyme> An enzyme that catalyses the replication of the RNA of coliphage q beta. ... Registry number: EC 2.7.7.- ... (12 Dec 1998) ...
Q disks
Synonym for A bands ... The dark-staining anisotropic cross striations in the myofibrils of muscle fibres, comprising regions of overlapping thick (myosin) and thin (actin) filaments. ... Synonym: A disks, anisotropic disks, Q bands, Q disks. ... (05 Mar 2000) ...
Q enzyme
<enzyme> Converts amylose to amylopectin. ... (10 Oct 1997) ...
Q fever
<infectious disease> An acute (abrupt-onset), self-limited febrile illness first reported in 1935 in Queensland, Australia. The Q is said not to be for Queensland, but for query since the cause of the disease was long a query (question mark). ... It is caused by the bacterium Coxiella burnetii, a rickettsia which mainly afflicts sheep and catt …
q in population genetics
The frequency of the less common of two different alternative (allelic) versions of a gene. (the frequency of the more common allele is p). ... (12 Dec 1998) ...
Q tip test
A test for determining the mobility of the urethra. ... (05 Mar 2000) ...
Q wave
The initial deflection of the QRS complex when such deflection is negative (downward). ... (05 Mar 2000) ...
Q-banding
<cell biology, technique> A fluorescent stain for chromosomes which produces specific banding patterns for each pair of homologous chromosomes. ... The acridine dye derivative, quinacrine hydrochloride, or other derivatives like quinacrine mustard dihydrochloride produces a green-yellow fluorescence at pH 4.5 in chromosome segments rich in con …
q-factor
<radiobiology> Ratio of power produced by fusion to power put into the reactor to heat the plasma and drive the magnetic fields. ... Q = 1 is the definition of scientific breakeven, where power out = power in. Economical fusion will require Q significantly greater than 1. Fortunately Q increases dramatically as the plasma parameters approach t …
Q-H2
Symbol for ubiquinol. ... (05 Mar 2000) ...
q-machine
<radiobiology> Plasma device studied in the 1960s, noted for its natural quiescence, which made it attractive for plasma wave phyics experimentation. ... (09 Oct 1997) ...
Q-R interval
The time elapsing from the onset of the QRS complex to the peak of the R wave; measures the time of onset of the intrinsicoid deflection if determined in an appropriate unipolar lead tracing. ... (05 Mar 2000) ...
Q-RB interval
The time between the onset of the Q wave of the QRS complex and the right bundle-branch potential (normally 15-20 msec). ... (05 Mar 2000) ...
Q-S2 interval
electromechanical systole ...
q-sort
A personality assessment technique in which the subject or observer indicates the degree to which a standardised set of descriptive statements actually describes the subject. The term reflects 'sorting' procedures occasionally used with this technique. ... (12 Dec 1998) ...
q-switch
<radiobiology> Optical switch used to rapidly change the Q of an optical resonator, utilised in the optical resonator of a laser to prevent lasing action until a high level of gain and energy storage are achieved in the laser medium. When the switch is triggered and rapidly increases the Q of the cavity, a stronger laser pulse is generated.
Q-T interval
Time from electrocardiogram Q wave to the end of the T wave corresponding to electrical systole. ... (05 Mar 2000) ...
Q10
Symbol for the increase in rate of a process produced by raising the temperature 10°C; rate of contraction of an excised heart approximately doubles for every 10°C (i.e., Q10 = 2). ... (05 Mar 2000) ...
QALY
Synonym for quality adjusted life year ... A year of life adjusted for its quality or its value. A year in perfect health is considered equal to 1.0 qaly. The value of a year in ill health would be discounted. For example, a year bedridden might have a value equal to 0.5 qaly. ... A measurement index derived from a modification of standard life-table …
QCO2
Symbol for the microliters STPD of CO2 given off per milligram of tissue per hour. ... (05 Mar 2000) ...
qd
<abbreviation> On a prescription, qd means one a day. ... Origin: L. Quaque die. ... (12 Dec 1998) ...
qds
<abbreviation> On a prescription, qds (or qid) means 4 times a day. ... Origin: L. Quater in die. ... (12 Dec 1998) ...
QF
<abbreviation> Quality factor, the same as relative biologic effectiveness in radiation protection. ... (05 Mar 2000) ...
qh
<abbreviation> On a prescription, qh means every hour. ... Origin: L. Quaque die. ... (12 Dec 1998) ...
QH2 cytochrome C reductase
<enzyme> Membrane bound complex in the mitochondrial inner membrane, responsible for electron transfer from reduced coenzyme Q to cytochrome C. Contains cytochromes b and c1 and iron sulphur proteins. ... (18 Nov 1997) ...
