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The primary structure of cytochrome c-554 from the green photosynthetic bacterium Chloroflexus aurantiacus

Authors
  • Dracheva, S
  • Williams, J
  • Van Driessche, Gonzalez
  • Van Beeumen, Jozef
  • Blankenship, RE
Publication Date
Jan 01, 1991
Identifiers
DOI: 10.1021/bi00112a012
OAI: oai:archive.ugent.be:221774
Source
Ghent University Institutional Archive
Keywords
Language
English
License
Unknown
External links

Abstract

The complete nucleotide sequence of the cytochrome c-554 gene from the green photosynthetic bacterium Chloroflexus aurantiacus has been determined. The derived amino acid sequence showed that the cytochrome precursor protein consists of 414 residues and contains 4 -Cys-X-X-Cys-His- heme binding motifs. The only regions of the cytochrome c-554 sequence that were found to be significantly similar to the sequences of cytochromes from other organisms were the heme binding sites. The highest similarity was found with the heme binding segments in the four-heme reaction center cytochrome subunit from the purple photosynthetic bacterium Rhodopseudomonas viridis. The importance of this similarity for the evolutionary relationship between Chloroflexus and the purple bacteria is discussed.

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