Metal coordination centres of class II cytochromes c

Eur J Biochem. 1982 Mar;123(1):73-80. doi: 10.1111/j.1432-1033.1982.tb06500.x.

Abstract

The class II cytochromes Rhodospirillum molischianum cytochrome c', Rhodopseudomonas palustris cytochrome C556 and Agrobacterium tumefaciens (B2a) cytochrome c556 have been investigated with a variety of spectroscopic techniques. The cytochrome c' was found to be high-spin and the two cytochromes c556 were found to be mainly low-spin and sx-coordinate with the fifth and sixth ligands being histidine and methionine. The implications of the different types of iron coordination are discussed.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Cytochrome c Group / classification*
  • Iron*
  • Magnetic Resonance Spectroscopy
  • Rhizobium
  • Rhodopseudomonas
  • Rhodospirillum
  • Spectrophotometry

Substances

  • Cytochrome c Group
  • cytochrome c556
  • Iron