| guanidine | <biochemistry> This compound is a by-product of protein metabolism and is found inurine, the hydrochloride version is used to denature and dissolve proteins. (09 Oct 1997) |
|---|---|
| guanidines | A family of iminourea derivatives. The parent compound has been isolated from mushrooms, corn germ, rice hulls, mussels, earthworms, and turnip juice. Derivatives may have antiviral and antifungal properties. (12 Dec 1998) |
| guanidinium | Referring to a guanidine moiety in a molecule (e.g., in arginine). (05 Mar 2000) |
| guanidinoacetase | <enzyme> Hydrolyzes the guanidino group to guanidine and urea Registry number: EC 3.5.3.2 Synonym: guanidino acetate amidinohydrolase, glycocyaminase (26 Jun 1999) |
| guanidinoacetate | H2N-C(NH)NHCH2COO-;an intermediate in creatine biosynthesis. (05 Mar 2000) |
| guanidinoacetate kinase | <enzyme> Catalyses the phosphorylation of urinary guanidinoacetic acid in the presence of ATP to phosphoguanidinoacetate Registry number: EC 2.7.3.1 Synonym: ATP-guanidinoacetate n-phosphotransferase (26 Jun 1999) |
| guanidinoacetate methyltransferase | The enzyme catalyzing the transfer of a methyl group from S-adenosyl-l-methionine ("active methionine") to guanidinoacetate (glycocyamine), forming creatine and S-adenosyl-l-homocysteine. (05 Mar 2000) |
| guanidinobenzoate esterase | <enzyme> Cleaves both 4-nitrophenyl-p-guanidinobenzoate and 4-methylumbelliferyl-p-guanidinobenzoate with the release of nitrophenol and methylumbelliferone, respectively Registry number: EC 3.1.1.- Synonym: guanidinobenzoatase (26 Jun 1999) |
| guanin | <physiology> A crystalline substance (C5H5N5O) contained in guano. It is also a constituent of the liver, pancreas, and other glands in mammals. Source: Websters Dictionary (01 Mar 1998) |
| guanine | <biochemistry, molecular biology> One of the constituent bases of nucleic acids, nucleosides and nucleotides. (18 Nov 1997) |
| guanine aminase | <enzyme> An enzyme that catalyses the deamination of guanine to form xanthine. Chemical name: Guanine aminohydrolase Registry number: EC 3.5.4.3 (12 Dec 1998) |
| guanine cell | A cell whose cytoplasm contains glistening crystals of guanine. (05 Mar 2000) |
| guanine deaminase | <enzyme> An enzyme that catalyses the deamination of guanine to form xanthine. Chemical name: Guanine aminohydrolase Registry number: EC 3.5.4.3 (12 Dec 1998) |
| guanine deoxyribonucleotide | Deoxyguanosine monophosphate, a hydrolysis product of DNA. Synonym: guanine deoxyribonucleotide. (05 Mar 2000) |
| guanine ribonucleotide | A major component of ribonucleic acids. Synonym: guanine ribonucleotide, guanosine 5'-monophosphate. Guanylic acid reductase (GMP reductase), an enzyme that catalyses the reaction of GMP with NADPH producing IMP, NH3, and NADP+; a part of the purine salvage pathway. Guanylic acid synthetase (GMP synthetase), an enzyme catalyzing the reaction of l-glutamine, XMP, and ATP to produce GMP, l-glutamate, AMP, and pyrophosphate; a key step in purine biosynthesis. Acronym: GMP (05 Mar 2000) |