1 keywords

CATH Domain 1vh7A00

CATH Classification

Level CATH Code Description
Class 3 Alpha Beta
Architecture 3.20 Alpha-Beta Barrel
Topology 3.20.20 TIM Barrel
Homologous Superfamily 3.20.20.70 Aldolase class I

Domain Context

CATH Clusters

Superfamily Aldolase class I
Functional Family Imidazole glycerol phosphate synthase subunit HisF

Enzyme Information

4.3.2.10
Imidazole glycerol-phosphate synthase.
based on mapping to UniProt Q9X0C6
5-((5-phospho-1-deoxy-D-ribulos-1-ylamino)methylideneamino)-1-(5-phospho- beta-D-ribosyl)imidazole-4-carboxamide + L-glutamine = 5-amino-1- (5-phospho-beta-D-ribosyl)imidazole-4-carboxamide + D-erythro-1- (imidazol-4-yl)glycerol 3-phosphate + L-glutamate.
-!- The enzyme is involved in histidine biosynthesis, as well as purine nucleotide biosynthesis. -!- The enzymes from archaea and bacteria are heterodimeric. -!- A glutaminase component (cf. EC 3.5.1.2) produces an ammonia molecule that is transferred by a 25 A tunnel to a cyclase component, which adds it to the imidazole ring, leading to lysis of the molecule and cyclization of one of the products. -!- The glutminase subunit is only active within the dimeric complex. -!- In fungi and plants the two subunits are combined into a single polypeptide.

UniProtKB Entries (1)

Q9X0C6
HIS6_THEMA
Thermotoga maritima MSB8
Imidazole glycerol phosphate synthase subunit HisF

PDB Structure

PDB 1VH7
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Structural analysis of a set of proteins resulting from a bacterial genomics project
Badger, J., Sauder, J.M., Adams, J.M., Antonysamy, S., Bain, K., Bergseid, M.G., Buchanan, S.G., Buchanan, M.D., Batiyenko, Y., Christopher, J.A., Emtage, S., Eroshkina, A., Feil, I., Furlong, E.B., Gajiwala, K.S., Gao, X., He, D., Hendle, J., Huber, A., Hoda, K., Kearins, P., Kissinger, C., Laubert, B., Lewis, H.A., Lin, J., Loomis, K., Lorimer, D., Louie, G., Maletic, M., Marsh, C.D., Miller, I., Molinari, J., Muller-Dieckmann, H.J., Newman, J.M., Noland, B.W., Pagarigan, B., Park, F., Peat, T.S., Post, K.W., Radojicic, S., Ramos, A., Romero, R., Rutter, M.E., Sanderson, W.E., Schwinn, K.D., Tresser, J., Winhoven, J., Wright, T.A., Wu, L., Xu, J., Harris, T.J.
Proteins