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EC 6.3.4.22 Details
EC number
6.3.4.22
Accepted name
tRNAIle2-agmatinylcytidine synthase
Reaction
ATP + agmatine + [tRNAIle2]-cytidine34 + H2O = [tRNAIle2]-2-agmatinylcytidine34 + AMP + 2 phosphate
Other name(s)
TiaS, AF2259, tRNAIle-2-agmatinylcytidine synthetase, tRNAIle-agm2C synthetase, tRNAIle-agmatidine synthetase
Systematic name
agmatine:[tRNAIle]-cytidine34 ligase
Comment
The enzyme from the archaeon Archaeoglobus fulgidus modifies the wobble base of the CAU anticodon of the archaeal tRNAIle2 at the oxo group in position 2 of cytidine34. This modification is crucial for accurate decoding of the genetic code. In bacteria EC 6.3.4.19, tRNAIle-lysidine synthase, catalyses the modification of [tRNAIle2]-cytidine34 to [tRNAIle2]-lysidine34 .
History
created 2013
EC Tree
1.1.1.68 created 1965, deleted 1978 [transferred to EC 1.1.99.15, deleted 1980]
1.1.1.70 created 1965, deleted 1978
1.1.1.74 created 1972, deleted 1976
1.1.1.89 created 1972, deleted 1976
1.1.1.109 created 1972, deleted 1976
1.1.1.139 created 1972, deleted 1978
1.1.1.155 created 1976, deleted 2004
1.1.1.171 created 1978, deleted 1984
1.1.1.180 created 1983, deleted 1984
1.1.1.182 created 1983, deleted 1990
1.1.1.204 created 1972 as EC 1.2.1.37, transferred 1984 to EC 1.1.1.204, modified 1989, deleted 2004
1.1.1.242 created 1992, deleted 2001
1.1.1.249 provisional version created 1999, deleted 1999 (reinstated 2001 as EC 2.5.1.46)
1.1.1.253 created 1999, deleted 2003