Linked Life Data

8215425

Source:http://linkedlifedata.com/resource/pubmed/id/8215425

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1993-11-2
pubmed:abstractText
The cytochromes c-551 from Ectothiorhodospira halophila and E. halochloris contain 78 and 79 residues, respectively. The sequences can be aligned without the need to postulate any internal deletions or insertions to give 63% identity. They are apparently distantly related to the class I cytochromes c, based on the location of the heme attachment site near the N-terminus and the sixth ligand methionine near the C-terminus. Alignment with cytochromes c5 from Azotobacter and Pseudomonas, with cytochromes c6 from cyanobacteria and algae, and with cytochromes c-555 from the green phototrophic bacteria suggests that residues which occupy important positions in the three-dimensional structures of these proteins have their equivalents in the Ectothiorhodospira cytochromes c-551, but the levels of overall identity are very low, around 30%. Although the Ectothiorhodospira cytochromes c-551 are apparently distantly related to the above, they should be regarded as representative of a new subclass of type I bacterial cytochromes c. Homologs of all of the cytochromes c normally found in Pseudomonas and Azotobacter have now been found in one or more purple bacterial species. Among these, cytochrome c5 homologs are the most widely occurring in purple, green, and cyanobacteria. For the first time, all families of phototrophic bacteria plus Pseudomonas can be related to one another at the molecular level.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0003-9861
pubmed:author
pubmed:issnType
Print
pubmed:volume
306
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
83-93
pubmed:dateRevised
2010-8-25
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Amino acid sequences of cytochromes c-551 from the halophilic purple phototrophic bacteria, Ectothiorhodospira halophila and E. halochloris.
pubmed:affiliation
Institute of Cell and Molecular Biology, University of Edinburgh, Scotland.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't