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EC 2.7.7.88 Details
EC number
2.7.7.88
Accepted name
GDP polyribonucleotidyltransferase
Reaction
(5′)pppAACA-[mRNA] + GDP = diphosphate + G(5′)pppAACA-[mRNA] (overall reaction);;(1a) (5′)pppAACA-[mRNA] + [protein L]-L-histidine = diphosphate + [protein L]-L-histidyl-(5′)phosphonato-AACA-[mRNA] + H2O;;(1b) [protein L]-L-histidyl-(5′)phosphonato-AACA-[mRNA] + GDP + H2O = [protein L]-L-histidine + G(5′)pppAACA-[mRNA]
Other name(s)
PRNTase, 5′-triphospho-mRNA:GDP 5′-phosphopolyribonucleotidyltransferase [G(5′)ppp-mRNA-forming]
Systematic name
(5′)pppAACA-[mRNA]:GDP 5′-phosphopolyribonucleotidyltransferase [(5′)pppAACA-[mRNA]-forming]
Comment
The enzyme from non-segmented negative strain (NNS) viruses (e.g. rhabdoviruses and lyssaviruses) is specific for mRNAs with sequences starting with AACA. cf. EC 2.7.7.50, mRNA guanylyltransferase.
History
created 2015, modified 2020
EC Tree
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]
2.7.7.20 created 1965, deleted 1972
2.7.7.26 created 1961 as EC 3.1.4.8, transferred 1965 to EC 2.7.7.26, deleted 1972
2.7.7.29 created 1972, deleted 2004