Nucleotide variability of the porcine SERPINA6 gene and the origin of a putative causal mutation associated with meat quality.
Anim Genet
; 42(3): 235-41, 2011 Jun.
Article
em En
| MEDLINE
| ID: mdl-21054451
ABSTRACT
The serpin peptidase inhibitor, clade A, member 6 gene (SERPINA6), also known as corticosteroid-binding globulin or CBG, is involved in obesity and stress sensitivity. Previous studies have reported putative causal mutations within that gene in the porcine species. To characterize a hypothetical selective footprint, we have resequenced approximately 6 kb of coding and non-coding fragments in 20 pigs comprising domestic breeds and wild boars from Asia and Europe. Nucleotide variability was found to be far greater within Asian pig breeds than European breeds (π = 1% vs. 0.05%, respectively), which is consistent with pig evolutionary history. The putative causal amino acid substitution p.Gly307Arg (SNP c.919G>A) associated with meat quality (drip loss) was only detected in European domestic pig breeds, suggesting a very recent mutation that appeared after domestication in Europe. No support for positive selection was detected, as no reduction in levels of diversity surrounding the mutation was found in lean breeds with respect to wild boar.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estresse Fisiológico
/
Transcortina
/
Carne
/
Mutação
/
Obesidade
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
Idioma:
En
Revista:
Anim Genet
Assunto da revista:
GENETICA
/
MEDICINA VETERINARIA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Espanha