Linked Life Data

11531704

Source:http://linkedlifedata.com/resource/pubmed/id/11531704

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2001-9-4
pubmed:databankReference
pubmed:abstractText
Data on genetic differences at CSN3 in goat breeds including a DNA based typing method and the mutations responsible for variation on protein and DNA level are presented here. Isoelectric focusing (IEF) in ultrathin polyacrylamide gels with carrier ampholytes was used to demonstrate CSN3 polymorphism in milk samples of Italian (Orobica n=88; Ionica n=68) and German goat breeds (Bunte Deutsche Edelziege n=244; Weisse Deutsche Edelziege n=134; Toggenburger n=25; Thüringer Waldziege n=70). A further CSN3 band was found presenting a more cathodic migration than CSN A. After chymosin action, the genetic polymorphism was also observed in the para-kappa-casein fraction. The new allele CSN3(B) was spread mainly in Orobica (37%), Bunte Deutsche Edelziege (11%) and Ionica (10%). CSN3(B) occurred in low frequency (<3%) in Thüringer Waldziege and in Weisse Deutsche Edelziege, and could not be demonstrated in milk samples of Toggenburger. The populations were in Hardy-Weinberg equilibrium at CSN3. The codominant genetic control of CSN3(B) was confirmed by genetic studies. Discrimination of CSN3 alleles A and B was also obtained by DNA SSCP analysis. Sequencing of CSN3(B) revealed four transitions at position 247, 309, 471, and 591 compared with CSN3(A). From these transitions, the following amino acid substitutions are deduced: 44 Gln --> Arg, 65 Val --> Ile, 119 Val --> Ile, and 159 Ser --> Pro. Among the four mutations, only the 44 Gln --> Arg can be revealed by milk protein IEF analysis while at DNA level three further genetic variants should exist in addition to CSN3(A) and CSN3(B).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0268-9146
pubmed:author
pubmed:issnType
Print
pubmed:volume
32
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
226-30
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Genetic polymorphism of goat kappa-casein (CSN3) in different breeds and characterization at DNA level.
pubmed:affiliation
Dipartimento di Sanità e Benessere Animale, University of Bari, Strada Provinciale per Casamassima km 3, Valenzano, Bari, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't