Linked Life Data

6726088

Source:http://linkedlifedata.com/resource/pubmed/id/6726088

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1984-7-16
pubmed:abstractText
The apolipoprotein E2 ( apoE2 ) variant that possesses a cysteine substituted for an arginine at residue 158 in the amino acid sequence E2( Arg158 ----Cys) can be distinguished by sodium dodecyl sulfate-polyacrylamide gel electrophoresis from other forms of apoE, including E3 (the parent form), E4( Cys112 ----Arg), E2( Arg145 ----Cys), and E2( Lys146 ----Gln). The E2( Arg158 ----Cys) migrates as a distinctly separable band with a higher apparent molecular weight than the other forms. Chemical modification of apoE2 ( Arg158 ----Cys) with sulfhydryl reagents (2-bromoethyl)-trimethylammonium bromide or cysteamine, which convert cysteine to arginyl or lysyl analogues, respectively, abolishes the difference in apparent molecular weight and results in the co-electrophoresis of E2( Arg158 ----Cys) with other apoE forms. The mobilities of the other apoE variants are not affected by these modifications. These results suggest that the substitution site at residue 158 is a key location, important in modifying the behavior of apoE and in modulating its apparent molecular weight on sodium dodecyl sulfate-polyacrylamide gels. Furthermore, the technique used in this study may be very helpful in distinguishing specific mutant forms of apoE2 .
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0022-2275
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
378-82
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
Genetic polymorphism of apolipoprotein E: a variant form of apolipoprotein E2 distinguished by sodium dodecyl sulfate--polyacrylamide gel electrophoresis.
pubmed:publicationType
Journal Article