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Int. J. Mol. Sci. 2013, 14(3), 4432-4443; doi:10.3390/ijms14034432

Characterization of the Expression Profile and Genetic Polymorphism of the Cellular Retinol-Binding Protein (CRBP IV) Gene in Erlang Mountainous Chickens

Laboratory of Animal Genetic and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, Sichuan 625014, China
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Received: 31 December 2012 / Revised: 6 February 2013 / Accepted: 19 February 2013 / Published: 25 February 2013
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
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Abstract

In this study, we cloned the coding sequence of chicken CRBP IV, quantified the mRNA expression in Erlang Mountainous Chickens, and investigated a polymorphism in this gene and its association with egg production traits among 349 individuals. The cloned fragment contained a 384 bp open reading frame, which encoded a predicted protein of 127 amino acids and was highly conserved among species. Expression of CRBP IV mRNA was detected in all eight tissues (small intestine, heart, liver, kidney, oviduct, ovary, pituitary, and hypothalamus) at different ages (12, 24, 32 and 45 w). High expression was found in small intestine, pituitary, kidney and liver, whereas it was low in the heart (p < 0.05). The CRBP IV mRNA levels changed with age in the various tissues, and were highly expressed in all tissues at 32 w, except for the heart. We identified one nucleotide substitution (c. 826T>C) in the second exon, which caused an amino acid change (p. S49L). Genotypes (TT, TC and CC) had significant effects on the age at first egg (AFE), total eggs for 300 days (TE300) and highest continuous laying days (HCLD). The CC genotype would be genetically advantageous to improve egg production traits due to earlier AFE, more TE300, and longer HCLD. View Full-Text
Keywords: CRBP IV gene; mRNA expression; SNP; egg production; chicken CRBP IV gene; mRNA expression; SNP; egg production; chicken
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Yin, H.-D.; Wang, Y.; Zhang, Z.-C.; Liu, Y.-P.; Chen, S.-Y.; Zhu, Q. Characterization of the Expression Profile and Genetic Polymorphism of the Cellular Retinol-Binding Protein (CRBP IV) Gene in Erlang Mountainous Chickens. Int. J. Mol. Sci. 2013, 14, 4432-4443.

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