Cytochrome b5

Cytochrome b5 (CB) functions as an electron transport carrier for several membrane-bound oxygenases. CB is heme-containing protein. The microsomal and mitochondrial CB are membrane-bound while bacterial and other animal tissue CB are soluble. Cytochrome b562 is the the b-type cytochrome from E. coli.

3D structures of cytochrome b53D structures of cytochrome b5

Cytochrome b5

1cyo, 1ehb, 3ozz – bCB + heme – bovine
1hko, 1nx7 - bCB + heme - NMR
1es1, 1i5u, 1lqx, 1lr6, 1m20, 1m2i, 1m2m, 1m59, 1u9m, 1u9u - bCB (mutant) + heme
1f03, 1f04, 1j0q, 1sh4 - bCB (mutant) + heme – NMR
1b5m, 3mus – rCB soluble domain + heme – rat
1aqa, 1aw3, 1axx, 2axx, 1b5a, 1b5b, 1blv, 1bfx - rCB soluble domain + heme – NMR
1awp, 1eue, 1icc, 1lj0, 2i89 - rCB soluble domain (mutant) + heme
1ib7, 1jex, 1mny - rCB soluble domain (mutant) + heme]] - NMR
1iet, 1ieu, 1i87, 1i8c – rCB – NMR
1do9 - CB soluble domain + heme – rabbit – NMR
1x3x - CB + heme – Ascaris suum
2ibj - CB + heme – fly
2i96, 3ner - CB + heme – human - NMR

Cytochrome b558

1cxy – CB + heme – Ectothiorhodospira shaposhnikovii

Cytochrome b562

256b – EcCB + heme – Escherichia coli
1qpu - EcCB + heme – NMR
1qq3 - EcCB (mutant) + heme – NMR
1lm3, 2bc5, 2qla, 3c62, 3c63, 3de8, 3de9, 3foo, 3fop, 3hni, 3hnj, 3hnk, 3hnl, 3l1m, 3iq5, 3iq6, 3m79, 3nmi, 3nmj, 3nmk, 3m15, 3m4b, 3m4c - EcCB (mutant) + heme
1apc – EcCB – NMR
1m6t - EcCB (mutant)