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EC 2.1.1.257 Details
EC number
2.1.1.257
Accepted name
tRNA (pseudouridine54-N1)-methyltransferase
Reaction
S-adenosyl-L-methionine + pseudouridine54 in tRNA = S-adenosyl-L-homocysteine + N1-methylpseudouridine54 in tRNA
Other name(s)
TrmY, m1&Psi, methyltransferase
Systematic name
S-adenosyl-L-methionine:tRNA (pseudouridine54-N1)-methyltransferase
Comment
While this archaeal enzyme is specific for the 54 position and does not methylate pseudouridine at position 55, the presence of pseudouridine at position 55 is necessary for the efficient methylation of pseudouridine at position 54 [2,3].
History
created 2012
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