Linked Life Data

687623

Source:http://linkedlifedata.com/resource/pubmed/id/687623

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1978-11-18
pubmed:abstractText
Temperature adaptation of biological membranes was examined by comparing the fragmented sarcoplasmic reticulum preparation of goldfish acclimated to different temperatures. Membrane fluidity was estimated using the fluorescence polarization technique. There was considerable variation between preparations, but no consistent differences in fluidity were observed between 5- and 25 degrees C-acclimated goldfish, fish species adapted over an evolutionary period to arctic or desert temperatures, and rat. The fatty acid composition of the sarcoplamic reticulum preparations of differently acclimated goldfish showed differences in the proportion of mono- and polyunsaturated fatty acids while the proportion of saturated fatty acids remained relatively constant. However, the fatty acid composition of sarcoplasmic reticulum phosphoglycerides became more unsaturated in the order rat, desert pupfish, arctic sculpin, which correlates with their respective environmental or body temperature. It is concluded that differences in membrane components other than fatty acids are important in determining membrane dynamic structure. The inability to demonstrate homeoviscous adaptation in sarcoplasmic reticulum is supported by other evidence suggesting that functions of the sarcoplasmic reticulum that are measured in vitro are not affected by such modifications of their phosphoglyceride fatty acid composition as occur during thermal acclimation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
17
pubmed:volume
511
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
442-52
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1978
pubmed:articleTitle
Adaptation of biological membranes to temperature. The lack of homeoviscous adaptation in the sarcoplasmic reticulum.
pubmed:publicationType
Journal Article, Comparative Study