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Bile pigments transport forms

Bile pigments linear tetrapyrroles formed by degradation of porphyrins, espedally heme. The a-me-thine bridge between rings A and B of protoheme is oxidatively cleaved by microsomal hydroxylases [microsomal heme oxygenase (decyclizing), EC 1.14.99.3, which exhibits an absolute requirement for NADPH-ferrihemoprotein reductase, EC 1.6.2.4] to form carbon monoxide and biliverdin IX. The iron is reduced to Fe(II) and returned to the body s iron pool, where it is reused or stored in hemosiderin and ferritin. Biliverdin is reduced to bilirubin and transported to the liver as a eomplex with serum albumin. [Pg.66]

See other pages where Bile pigments transport forms is mentioned: [Pg.589]    [Pg.194]    [Pg.787]    [Pg.1404]    [Pg.1404]    [Pg.1550]    [Pg.201]    [Pg.220]    [Pg.491]    [Pg.812]    [Pg.470]    [Pg.337]    [Pg.370]    [Pg.372]    [Pg.23]    [Pg.275]    [Pg.313]    [Pg.338]    [Pg.286]    [Pg.620]    [Pg.1781]    [Pg.308]    [Pg.333]   
See also in sourсe #XX -- [ Pg.589 ]



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Bile pigments

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