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EC 1.1.1.267 Details
EC number
1.1.1.267
Accepted name
1-deoxy-D-xylulose-5-phosphate reductoisomerase
Reaction
2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+
Other name(s)
DXP-reductoisomerase, 1-deoxy-D-xylulose-5-phosphate isomeroreductase, 2-C-methyl-D-erythritol 4-phosphate (MEP) synthase
Systematic name
2-C-methyl-D-erythritol-4-phosphate:NADP+ oxidoreductase (isomerizing)
CAS registry number
210756-42-6
Comment
The enzyme requires Mn2+, Co2+ or Mg2+ for activity, with the first being most effective. The enzyme from several eubacteria, including Escherichia coli, forms part of an alternative nonmevalonate pathway for terpenoid biosynthesis (for diagram, click here). The mechanism has been shown to be a retroaldol/aldol reaction [2].
History
created 2001
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