Linked Life Data

14731225

Source:http://linkedlifedata.com/resource/pubmed/id/14731225

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2004-1-20
pubmed:abstractText
The major histocompatibility complex B (MHC B) region in a standard haplotype of Leghorn chickens contains two closely linked class I loci, B-FI and B-FIV. Few sequences of B-FI alleles are available, and therefore alleles of the two loci have not been compared with regard to sequence diversity or locus specificity. Here, we report eight new B-F alpha 1/alpha 2-coding sequences from broiler chicken MHC B haplotypes, and a unique recombinant between the two B-F loci. The new sequences were combined with existing B-F sequences from Leghorn and broiler haplotypes for analysis. On the basis of phylogenetic analysis and conserved sequence motifs, B-F sequences separated into two groups (Groups A and B), corresponding to B-FIV and B-FI locus, respectively. Every broiler haplotype had one B-F sequence in Group A and the second B-F sequence, if it existed, clustered in Group B. Group B (presumptive B-FI locus) sequences identified in broiler haplotypes resembled the human MHC class I HLA-C locus in their distinctive pattern of allelic polymorphism. Compared with B-FIV, B-FI alleles were less polymorphic and possessed a conserved locus-specific motif in the alpha1 helix, but nevertheless demonstrated evidence of diversifying selection. One B-FI alpha 1/alpha 2-coding nucleotide sequence was completely conserved in four different broiler haplotypes, but each allele differed in the exon encoding the alpha 3 domain.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0268-9146
pubmed:author
pubmed:issnType
Print
pubmed:volume
35
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
18-27
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Diversity and locus specificity of chicken MHC B class I sequences.
pubmed:affiliation
Department of Poultry Science Department of Pathobiology, Auburn University, Auburn, AL 36849, USA.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't