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Phosphoribosyl synthetase-associated domain
This family includes several examples of enzymes from class EC:2.7.6.1, phosphoribosyl-pyrophosphate transferase. [1]. 9545573. Molecular cloning of a human cDNA for the 41-kDa phosphoribosylpyrophosphate synthetase-associated protein. Katashima R, Iwahana H, Fujimura M, Yamaoka T, Ishizuka T, Tatibana M, Itakura M;. Biochim Biophys Acta. 1998;1396:245-250. [2]. 18409517. [Increased activity of PRPP synthetase]. Iizasa T;. Nihon Rinsho. 2008;66:694-698. (from Pfam)
ribose-phosphate pyrophosphokinase-like domain-containing protein
This family is frequently found N-terminal to the Pribosyltran, Pfam:PF00156. (from Pfam)
phosphoribosyltransferase family protein
This family includes a range of diverse phosphoribosyl transferase enzymes. This family includes: Adenine phosphoribosyl-transferase EC:2.4.2.7, Swiss:P07672. Hypoxanthine-guanine-xanthine phosphoribosyl-transferase Swiss:P51900. Hypoxanthine phosphoribosyl-transferase EC:2.4.2.8 Swiss:P36766. Ribose-phosphate pyrophosphokinase i EC:2.7.6.1 Swiss:P09329. Amidophosphoribosyltransferase EC:2.4.2.14 Swiss:P00496. Orotate phosphoribosyl-transferase EC:2.4.2.10 Swiss:P11172. Uracil phosphoribosyl-transferase EC:2.4.2.9 Swiss:P25532. Xanthine-guanine phosphoribosyl-transferase EC:2.4.2.22 Swiss:P00501. In Arabidopsis, At the very N-terminus of this domain is the P-Loop NTPase domain [1]. [1]. 17143579. Functional characterization of a gene encoding a dual domain for uridine kinase and uracil phosphoribosyltransferase in Arabidopsis thaliana. Islam MR, Kim H, Kang SW, Kim JS, Jeong YM, Hwang HJ, Lee SY, Woo JC, Kim SG;. Plant Mol Biol. 2007;63:465-477. (from Pfam)
ribose-phosphate pyrophosphokinase
ribose-phosphate pyrophosphokinase catalyzes the transfer of the pyrophosphoryl group from ATP to the 1-hydroxyl of ribose-5-phosphate to form the the central metabolite phospho-alpha-D-ribosyl-1-pyrophosphate (PRPP)
ribose-phosphate diphosphokinase
Catalyzes the formation of 5-phospho-alpha-D-ribose 1-phosphate from D-ribose 5-phosphate and ATP
Alternate name: phosphoribosylpyrophosphate synthetase In some systems, close homologs lacking enzymatic activity exist and perform regulatory functions. The model is designated subfamily rather than equivalog for this reason.
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