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EC 2.9.1.1 Details
EC number
2.9.1.1
Accepted name
L-seryl-tRNASec selenium transferase
Reaction
L-seryl-tRNASec + selenophosphate = L-selenocysteinyl-tRNASec + phosphate
Other name(s)
L-selenocysteinyl-tRNASel synthase, L-selenocysteinyl-tRNASec synthase selenocysteine synthase, cysteinyl-tRNASec-selenium transferase, cysteinyl-tRNASec-selenium transferase
Systematic name
selenophosphate:L-seryl-tRNASec selenium transferase
CAS registry number
183869-06-9
Comment
A pyridoxal 5′-phosphate enzyme identified in Escherichia coli. Recognises specifically tRNASec-species. Binding of tRNASec also occurs in the absence of the seryl group. 2-Aminoacryloyl-tRNA, bound to the enzyme as an imine with the pyridoxal phosphate, is an intermediate in the reaction. Since the selenium atom replaces oxygen in serine, the product may also be referred to as L-selenoseryl-tRNASec. The symbol Sel has also been used for selenocysteine but Sec is preferred.
History
created 1999
EC Tree
3.1.1.9 created 1961, deleted 1972
3.1.1.12 created 1961, deleted 1972
3.1.1.16 created 1961, deleted 1972
3.1.1.18 created 1961, deleted 1982
3.1.1.62 created 1989, deleted 1992
3.1.1.69 created 1992, deleted 2002
3.1.4.5 created 1961, deleted 1978
3.1.4.6 created 1961, deleted 1978
3.1.4.7 created 1961, deleted 1978
3.1.4.8 created 1961, transferred 1965 to EC 2.7.7.26, reinstated 1972, deleted 1978
3.1.4.9 created 1965, deleted 1978
3.1.4.10 created 1972, modified 1976, deleted 2002
3.1.4.18 created 1972, deleted 1978
3.1.4.19 created 1972, deleted 1978
3.1.4.20 created 1972, deleted 1978
3.1.4.21 created 1972, deleted 1978
3.1.4.22 created 1972, deleted 1978
3.1.4.23 created 1972, deleted 1978
3.1.4.24 created 1972, deleted 1978
3.1.4.25 created 1972, deleted 1978
3.1.4.26 created 1972, deleted 1978
3.1.4.27 created 1972, deleted 1978
3.1.4.28 created 1972, deleted 1978
3.1.4.29 created 1972, deleted 1978
3.1.4.30 created 1972, deleted 1978
3.1.4.31 created 1972, deleted 1978
3.1.4.32 created 1972, deleted 1978
3.1.4.33 created 1972, deleted 1978
3.1.4.34 created 1972, deleted 1978
3.1.4.36 created 1976, deleted 2002
3.1.4.47 created 1989, deleted 2002