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EC 1.14.99.58 Details
EC number
1.14.99.58
Accepted name
heme oxygenase (biliverdin-IX-β and δ-forming)
Reaction
(1) protoheme + 3 reduced acceptor + 3 O2 = biliverdin-IX-δ + CO + Fe2+ + 3 acceptor + 3 H2O;;(2) protoheme + 3 reduced acceptor + 3 O2 = biliverdin-IX-β + CO + Fe2+ + 3 acceptor + 3 H2O
Other name(s)
pigA (gene name)
Systematic name
protoheme,donor:oxygen oxidoreductase (biliverdin-IX-β and δ-forming)
Comment
The enzyme, characterized from the bacterium Pseudomonas aeruginosa, differs from EC 1.14.15.20, heme oxygenase (biliverdin-producing, ferredoxin), in that the heme substrate is rotated by approximately 110 degrees within the active site, resulting in cleavage at a different part of the ring. It forms a mixture of about 70% biliverdin-IX-δ and 30% biliverdin-IX-β.
History
created 2017
EC Tree
1.14.99.5 created 1972, modified 1986, modified 2000, deleted 2000
1.14.99.6 created 1972, modified 2000, deleted 2000
1.14.99.8 created 1972, deleted 1984
1.14.99.13 created 1972, deleted 1984
1.14.99.16 created 1972, deleted 2002
1.14.99.17 created 1972, deleted 1976
1.14.99.18 created 1976, modified 1999, deleted 2003
1.14.99.25 created 1986, deleted 2000