ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2015, Vol. 46 ›› Issue (9): 1678-1685.doi: 10.11843/j.issn.0366-6964.2015.09.026

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Molecular Cloning and Expression Patterns Analysis of the Porcine STARD3 N-terminal like Protein(STARD3NL) Gene

XING Jin-yi1* ,JIA Kun-hang1,LI Yan-ping2   

  1. (1.College of Life Science,Linyi University,Linyi 276005,China;2.College of Animal Science and Veterinary Medicine,Shandong Agricultural University,Tai’an 271018,China)
  • Received:2014-09-28 Online:2015-09-23 Published:2015-09-23

Abstract:

The aim of this study was to clone porcine STARD3NAL(STARD3 N-terminal like protein),and analyze the structure of STARD3NAL,and investigate its expression in porcine different tissues.The porcine STARD3NAL gene was cloned by 5′,3′-RACE and RT-PCR,the protein structure of porcine STARD3NL was analyzed by bioinformatics methods.The expression patterns in different tissues were detected by real-time RT-PCR.The results showed that the porcine STARD3NL cDNA was 1 319 bp(GenBank accession No.:HQ634946) in length,which coded 235 amino acids and shared highly identity with those of other species.The phylogenetic tree analysis indicated the porcine STARD3NL was closely related to cattle and sheep,but distantly related to the zebrafish.The porcine STARD3NL protein contained conserved MENTAL domain and was hydrophobicity protein and there were 4 transmembrane helices in the STARD3NL protein.The secondary structure of STARD3NL protein showed that the STARD3NL protein fold for 60% into α-helix.This polypeptide contained no signal peptide in its amino acids,and was a nonsecretory protein.The residing probability of STARD3NL in the endoplasmic reticulum was 39.1%.By real-time PCR,mRNA expression of porcine STARD3NL were detected in all 14 tissues investigated,and STARD3NL mRNA expression levels in liver were the highest and in longissimus dorsi were the lowest.In addition,no significant difference of STARD3NL mRNA expression levels in lung tissues was detected between Laiwu pigs(LW) and YL pigs(Yorshire♂×Landrace♀) in infected circovirus group(P>0.05).These results will provide the data for further research of STARD3NL gene structures and function,breeding for disease resistance.

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