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EC 2.7.7.74 Details

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EC number

2.7.7.74

Accepted name

1L-myo-inositol 1-phosphate cytidylyltransferase

Reaction

CTP + 1L-myo-inositol 1-phosphate = diphosphate + CDP-1L-myo-inositol

Other name(s)

CTP:inositol-1-phosphate cytidylyltransferase (bifunctional CTP:inositol-1-phosphate cytidylyltransferase/CDP-inositol:inositol-1-phosphate transferase (IPCT/DIPPS)), IPCT (bifunctional CTP:inositol-1-phosphate cytidylyltransferase/CDP-inositol:inositol-1-phosphate transferase (IPCT/DIPPS)), L-myo-inositol-1-phosphate cytidylyltransferase

Systematic name

CTP:1L-myo-inositol 1-phosphate cytidylyltransferase

Comment

In many organisms this activity is catalysed by a bifunctional enzyme. The cytidylyltransferase domain of the bifunctional EC 2.7.7.74/EC 2.7.8.34 (CTP:inositol-1-phosphate cytidylyltransferase/CDP-inositol:inositol-1-phosphate transferase) is absolutely specific for CTP and 1L-myo-inositol 1-phosphate. The enzyme is involved in biosynthesis of bis(1L-myo-inositol) 1,3′-phosphate, a widespread organic solute in microorganisms adapted to hot environments.

History

created 2011

EC Tree

1 Oxidoreductases

2.1 Transferring one-carbon groups

2.2 Transferring aldehyde or ketonic groups

2.3 Acyltransferases

2.4 Glycosyltransferases

2.5 Transferring alkyl or aryl groups, other than methyl groups

2.6 Transferring nitrogenous groups

2.7 Transferring phosphorus-containing groups

2.7.1 Phosphotransferases with an alcohol group as acceptor

2.7.2 Phosphotransferases with a carboxy group as acceptor

2.7.3 Phosphotransferases with a nitrogenous group as acceptor

2.7.4 Phosphotransferases with a phosphate group as acceptor

2.7.5 Phosphotransferases with regeneration of donors, apparently catalysing intramolecular transfers (deleted sub-subclass)

2.7.6 Diphosphotransferases

2.7.7 Nucleotidyltransferases

2.7.7.1 nicotinamide-nucleotide adenylyltransferase

2.7.7.2 FAD synthase

2.7.7.3 pantetheine-phosphate adenylyltransferase

2.7.7.4 sulfate adenylyltransferase

2.7.7.5 sulfate adenylyltransferase (ADP)

2.7.7.6 DNA-directed RNA polymerase

2.7.7.7 DNA-directed DNA polymerase

2.7.7.8 polyribonucleotide nucleotidyltransferase

2.7.7.9 UTP—glucose-1-phosphate uridylyltransferase

2.7.7.10 UTP—hexose-1-phosphate uridylyltransferase

2.7.7.11 UTP—xylose-1-phosphate uridylyltransferase

2.7.7.12 UDP-glucose—hexose-1-phosphate uridylyltransferase

2.7.7.13 mannose-1-phosphate guanylyltransferase

2.7.7.14 ethanolamine-phosphate cytidylyltransferase

2.7.7.15 choline-phosphate cytidylyltransferase

2.7.7.16 created 1961, deleted 1972, [transferred to EC 3.1.4.22, deleted 1980]

2.7.7.17 created 1965, deleted 1972, [transferred to EC 3.1.4.23, deleted 1980]

2.7.7.18 nicotinate-nucleotide adenylyltransferase

2.7.7.19 polynucleotide adenylyltransferase

2.7.7.20 created 1965, deleted 1972

2.7.7.21 tRNA cytidylyltransferase

2.7.7.22 mannose-1-phosphate guanylyltransferase (GDP)

2.7.7.23 UDP-N-acetylglucosamine diphosphorylase

2.7.7.24 glucose-1-phosphate thymidylyltransferase

2.7.7.25 tRNA adenylyltransferase

2.7.7.26 created 1961 as EC 3.1.4.8, transferred 1965 to EC 2.7.7.26, deleted 1972

2.7.7.27 glucose-1-phosphate adenylyltransferase

2.7.7.28 nucleoside-triphosphate-aldose-1-phosphate nucleotidyltransferase

2.7.7.29 created 1972, deleted 2004

2.7.7.30 fucose-1-phosphate guanylyltransferase

2.7.7.31 DNA nucleotidylexotransferase

2.7.7.32 galactose-1-phosphate thymidylyltransferase

2.7.7.33 glucose-1-phosphate cytidylyltransferase

2.7.7.34 glucose-1-phosphate guanylyltransferase

2.7.7.35 ADP ribose phosphorylase

2.7.7.36 aldose-1-phosphate adenylyltransferase

2.7.7.37 aldose-1-phosphate nucleotidyltransferase

2.7.7.38 3-deoxy-manno-octulosonate cytidylyltransferase

2.7.7.39 glycerol-3-phosphate cytidylyltransferase

2.7.7.40 D-ribitol-5-phosphate cytidylyltransferase

2.7.7.41 phosphatidate cytidylyltransferase

2.7.7.42 [glutamine synthetase] adenylyltransferase

2.7.7.43 N-acylneuraminate cytidylyltransferase

2.7.7.44 glucuronate-1-phosphate uridylyltransferase

2.7.7.45 guanosine-triphosphate guanylyltransferase

2.7.7.46 gentamicin 2′′-nucleotidyltransferase

2.7.7.47 streptomycin 3′′-adenylyltransferase

2.7.7.48 RNA-directed RNA polymerase

2.7.7.49 RNA-directed DNA polymerase

2.7.7.50 mRNA guanylyltransferase

2.7.7.51 adenylylsulfate—ammonia adenylyltransferase

2.7.7.52 RNA uridylyltransferase

2.7.7.53 ATP adenylyltransferase

2.7.7.54 phenylalanine adenylyltransferase

2.7.7.55 anthranilate adenylyltransferase

2.7.7.56 tRNA nucleotidyltransferase

2.7.7.57 N-methylphosphoethanolamine cytidylyltransferase

2.7.7.58 (2,3-dihydroxybenzoyl)adenylate synthase

2.7.7.59 [protein-PII] uridylyltransferase

2.7.7.60 2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase

2.7.7.61 citrate lyase holo-[acyl-carrier protein] synthase

2.7.7.62 adenosylcobinamide-phosphate guanylyltransferase

2.7.7.63 lipoate—protein ligase

2.7.7.64 UTP-monosaccharide-1-phosphate uridylyltransferase

2.7.7.65 diguanylate cyclase

2.7.7.66 malonate decarboxylase holo-[acyl-carrier protein] synthase

2.7.7.67 CDP-2,3-bis-(O-geranylgeranyl)-sn-glycerol synthase

2.7.7.68 2-phospho-L-lactate guanylyltransferase

2.7.7.69 GDP-L-galactose/GDP-D-glucose: hexose 1-phosphate guanylyltransferase

2.7.7.70 D-glycero-β-D-manno-heptose 1-phosphate adenylyltransferase

2.7.7.71 D-glycero-α-D-manno-heptose 1-phosphate guanylyltransferase

2.7.7.72 CCA tRNA nucleotidyltransferase

2.7.7.73 sulfur carrier protein ThiS adenylyltransferase

2.7.7.74 1L-myo-inositol 1-phosphate cytidylyltransferase

2.7.7.75 molybdopterin adenylyltransferase

2.7.7.76 molybdenum cofactor cytidylyltransferase

2.7.7.77 molybdenum cofactor guanylyltransferase

2.7.7.78 GDP-D-glucose phosphorylase

2.7.7.79 tRNA^His guanylyltransferase

2.7.7.80 molybdopterin-synthase adenylyltransferase

2.7.7.81 pseudaminic acid cytidylyltransferase

2.7.7.82 CMP-N,N′-diacetyllegionaminic acid synthase

2.7.7.83 UDP-N-acetylgalactosamine diphosphorylase

2.7.7.84 2′-5′ oligoadenylate synthase

2.7.7.85 diadenylate cyclase

2.7.7.86 cyclic GMP-AMP synthase

2.7.7.87 L-threonylcarbamoyladenylate synthase

2.7.7.88 GDP polyribonucleotidyltransferase

2.7.7.89 [glutamine synthetase]-adenylyl-L-tyrosine phosphorylase

2.7.7.90 8-amino-3,8-dideoxy-manno-octulosonate cytidylyltransferase

2.7.7.91 valienol-1-phosphate guanylyltransferase

2.7.7.92 3-deoxy-D-glycero-D-galacto-nonulopyranosonate cytidylyltransferase

2.7.7.93 phosphonoformate cytidylyltransferase

2.7.7.94 4-hydroxyphenylalkanoate adenylyltransferase

2.7.7.95 mycocerosic acid adenylyltransferase

2.7.7.96 ADP-D-ribose pyrophosphorylase

2.7.7.97 3-hydroxy-4-methylanthranilate adenylyltransferase

2.7.7.98 4-hydroxybenzoate adenylyltransferase

2.7.7.99 N-acetyl-α-D-muramate 1-phosphate uridylyltransferase

2.7.7.100 SAMP-activating enzyme

2.7.7.101 DNA primase DnaG

2.7.7.102 DNA primase AEP

2.7.7.103 L-glutamine-phosphate cytidylyltransferase

2.7.7.104 2-hydroxyethylphosphonate cytidylyltransferase

2.7.7.105 phosphoenolpyruvate guanylyltransferase

2.7.7.106 3-phospho-D-glycerate guanylyltransferase

2.7.7.107 (2-aminoethyl)phosphonate cytidylyltransferase

2.7.7.108 protein adenylyltransferase

2.7.8 Transferases for other substituted phosphate groups

2.7.9 Phosphotransferases with paired acceptors

2.7.10 Protein-tyrosine kinases

2.7.11 Protein-serine/threonine kinases

2.7.12 Dual-specificity kinases (those acting on Ser/Thr and Tyr residues)

2.7.13 Protein-histidine kinases

2.7.13.1 protein-histidine pros-kinase

2.7.13.2 protein-histidine tele-kinase

2.7.13.3 histidine kinase

2.7.14 Protein-arginine kinases

2.7.99 Other protein kinases

2.8 Transferring sulfur-containing groups

2.9 Transferring selenium-containing groups

2.10 Transferring molybdenum- or tungsten-containing groups

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Release 2023.1 (January 2023)