Protein Family Models

These peptidases have gamma-glutamyl hydrolase activity; that is they catalyse the cleavage of the gamma-glutamyl bond in poly-gamma-glutamyl substrates. They are structurally related to Pfam:PF00117, but contain extensions in four loops and at the C terminus [1]. [1]. 11953431. Three-dimensional structure of human gamma -glutamyl hydrolase. A class I glatamine amidotransferase adapted for a complex substate. Li H, Ryan TJ, Chave KJ, Van Roey P;. J Biol Chem 2002;277:24522-24529. (from Pfam)

Date:

2024-10-16

This family consists of the N-terminal region of the CTP synthase protein (EC:6.3.4.2). This family is found in conjunction with Pfam:PF00117 located in the C-terminal region of the protein. CTP synthase catalyses the synthesis of CTP from UTP by amination of the pyrimidine ring at the 4-position [1]. [1]. 12522217. Thr-431 and Arg-433 are part of a conserved sequence motif of the glutamine amidotransferase domain of CTP synthases and are involved in GTP activation of the Lactococcus lactis enzyme. Willemoes M;. J Biol Chem 2003;278:9407-9411. (from Pfam)

Date:

2024-10-16

Date:

2024-11-04

cytidine triphosphate (CTP) synthase catalyzes the conversion of UTP to CTP in the last committed step in pyrimidine nucleotide biosynthesis

Date:

2023-03-21

Catalyzes the ATP-dependent amination of UTP to CTP with either L-glutamine or ammonia as the source of nitrogen

Date:

2021-07-22

CTP synthase is involved in pyrimidine ribonucleotide/ribonucleoside metabolism. The enzyme catalyzes the reaction L-glutamine + H2O + UTP + ATP = CTP + phosphate + ADP + L-glutamate. The enzyme exists as a dimer of identical chains that aggregates as a tetramer. This gene has been found circa 500 bp 5' upstream of enolase in both beta (Nitrosomonas europaea) and gamma (E.coli) subdivisions of proteobacterium (FEMS Microbiol Lett 1998 Aug 1;165(1):153-7).

Gene:

pyrG

Date:

2024-05-29