Linked Life Data

14562962

Source:http://linkedlifedata.com/resource/pubmed/id/14562962

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2003-10-17
pubmed:abstractText
High-potential iron-sulfur protein (HiPIP) has recently been shown to function as a soluble mediator in photosynthetic electron transfer between the cytochrome bc1 complex and the reaction-center bacteriochlorophyll in some species of phototrophic proteobacteria, a role traditionally assigned to cytochrome c2. For those species that produce more than one high-potential electron carrier, it is unclear which protein functions in cyclic electron transfer and what characteristics determine reactivity. To establish how widespread the phenomenon of multiple electron donors might be, we have studied the electron transfer protein composition of a number of phototrophic proteobacterial species. Based upon the distribution of electron transfer proteins alone, we found that HiPIP is likely to be the electron carrier of choice in the purple sulfur bacteria in the families Chromatiaceae and Ectothiorhodospiraceae, but the majority of purple nonsulfur bacteria are likely to utilize cytochrome c2. We have identified several new species of phototrophic proteobacteria that may use HiPIP as electron donor and a few that may use cytochromes c other than c2. We have determined the amino acid sequences of 14 new HiPIPs and have compared their structures. There is a minimum of three sequence categories of HiPIP based upon major insertions and deletions which approximate the three families of phototrophic proteobacteria and each of them can be further subdivided prior to construction of a phylogenetic tree. The comparison of relationships based upon HiPIP and RNA revealed several discrepancies.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0022-2844
pubmed:author
pubmed:issnType
Print
pubmed:volume
57
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
181-99
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Amino acid sequences and distribution of high-potential iron-sulfur proteins that donate electrons to the photosynthetic reaction center in phototropic proteobacteria.
pubmed:affiliation
Department of Biochemistry, Physiology and Microbiology, Laboratory for Protein Biochemistry and Protein Engineering, University of Ghent, 9000 Ghent, Belgium.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't