Linked Life Data

870038

Source:http://linkedlifedata.com/resource/pubmed/id/870038

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1977-6-30
pubmed:abstractText
A method is described for isolation of the Rhodopseudomonas viridis reaction center complex free of altered, 685 nm absorbing pigment. This improved preparation contains two c-type cytochromes in the ratio P-960: cytochrome c-558: cytochrome c-553 of 1:2:2 to 3. The near infrared spectral forms of the reduced preparation are located at 790, 832, 846, and 987 nm at 77 K; the oxidized complex absorbs at 790, 808, 829 and approx. 1310 nm. The 790 nm band is attributed to bacteriophaeophytin b and the other absorbances to bacteriochlorophyll b, The visible absorption bands may be assigned to these pigments and to the cytochromes present and, probably to a carotenoid. The presence of two bacteriochlorophyll b spectral forms in the P+-830 band suggests that exciton interactions occur among pigments in the oxidized, as well as the reduced, reaction center. Changes in the 790 and 544 nm bands upon illumination of the reaction center preparation at low redox potential may be indicative of a role for bacteriophaeophytin b in primary photochemical events.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
11
pubmed:volume
460
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
318-30
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1977
pubmed:articleTitle
Isolation and spectral characteristics of the photochemical reaction center of Rhodopseudomonas viridis.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.