| riboflavin kinase | A cytosolic enzyme catalyzing the formation of flavin mononucleotide (r. Phosphate) from riboflavin, utilizing ATP as phosphorylating agent. Synonym: flavokinase. (05 Mar 2000) |
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| MAP kinase kinase kinase | <enzyme> From pc12 cells; reactivates map kinase kinase inactivated by protein phosphatase 2a by phosphorylation of serine residues; tak1 (tgf-beta-activated kinase 1) is a member of the mapkkk family; genbank ab006787 (mouse) Registry number: EC 2.7.10.- Synonym: mapkkk, tak1 mapkkk, ask1 (kinase), apoptosis signal-regulating kinase 1 (26 Jun 1999) |
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| maltose-riboflavin glucosyltransferase | <enzyme> Elevated in diabetic patients Registry number: EC 2.4.1.- Synonym: m-r glucosyltransferase (26 Jun 1999) |
| riboflavin | <biochemistry> Ribose attached to a flavin moiety that becomes part of FAD and FMN. (23 Aug 1998) |
| riboflavin 5'-phosphate | <biochemistry> This biomolecule serves as a coenzyme for some enzymes that catalyse oxidation-reduction reactions. (09 Oct 1997) |
| riboflavin deficiency | A dietary deficiency of riboflavin causing a syndrome chiefly marked by cheilitis, angular stomatitis, glossitis associated with a purplish red or magenta-coloured tongue that may show fissures, corneal vascularization, dyssebacia, and anaemia. (12 Dec 1998) |
| riboflavin permease | <chemical> Chemical name: permease, riboflavin (26 Jun 1999) |
| riboflavin synthase | <enzyme> An enzyme that catalyses the formation of riboflavin from two molecules of 6,7-dimethyl-8-ribityllumazine, utilizing a four-carbon fragment from one molecule which is transferred to the second molecule. Chemical name: 6,7-Dimethyl-8-(1-D-ribityl)lumazine:6,7-dimethyl-8-(1-D-ribityl)lumazine 2,3-butanediyltransferase Registry number: EC 2.5.1.9 (12 Dec 1998) |
| riboflavin unit | Potency usually expressed in terms of weight of pure riboflavin. See: Sherman-Bourquin unit of vitamin B2. Synonym: vitamin B2 unit. (05 Mar 2000) |
| methylol riboflavin | A mixture of methylol derivatives of riboflavin formed by the action of formaldehyde on riboflavin in weakly alkaline solution; it has the same action as riboflavin, but is preferred for parenteral administration. (05 Mar 2000) |
| AMP-activated protein kinase kinase | <enzyme> An endogenous kinase kinase; reactivates the inactive form of AMP-activated protein kinase (AMP-pk); phosphorylates the 63-kD subunit of AMP-pk Registry number: EC 2.7.1.- Synonym: AMP-pk reactivator, hmg CoA reductase kinase kinase (26 Jun 1999) |
| calmodulin-dependent protein kinase IV kinase | <enzyme> Phosphorylates and activates cam-kinase iv; from brain Registry number: EC 2.7.10.- Synonym: cam-kinase iv kinase (26 Jun 1999) |
| MAPKAP kinase-2 reactivating kinase | <enzyme> A mapk-like enzyme; homologous to p42(mapk) and p44(mapk); activated by phosphorylation of serine/threonine and tyrosine residues Registry number: EC 2.7.1.- Synonym: mapkap kinase-2 rk (26 Jun 1999) |
| ribosomal protein S6 kinase kinase | <enzyme> Isolated from unfertilised xenopus eggs; a 41 kD enzyme that is associated, in vivo, with phosphorylation on threonine and tyrosine residues and, in vitro, with phosphorylation on serine as well Registry number: EC 2.7.1.- Synonym: rsk kinase (26 Jun 1999) |
| protein kinase B kinase | <enzyme> Phosphorylates and activates protein kinase b on threonine-308; requires phosphatidylinositol-3,4,5-trisphosphate Registry number: EC 2.7.10.- Synonym: upstream kinase, pkb kinase (26 Jun 1999) |
| leukocyte tyrosine kinase receptor tyrosine kinase | <enzyme> May be receptor for pre-b lymphocyte growth or differentiation factor; aa sequence given in first source Registry number: EC 2.7.1.- Synonym: ltk receptor tyrosine kinase, ltk receptor tk, ltk protein, leukocyte tyrosine kinase (ltk) (26 Jun 1999) |