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Genomic organization, alternative splicing and tissues expression of porcine CREB3L4 gene

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Abstract

CREB3L4 (cAMP response element binding protein3 like 4) belongs to mammalian CREB/ATF subfamily transcription factors featuring a unique putative transmembrane domain lined to the bZIP region in their C-terminals. We report here the cloning of porcine CREB3L4 and its alternative splicing variant. The open reading frame of normal CREB3L4 covers 1,188 bp and encodes a 395-amino acid polypeptide, whereas its variant encodes a C-terminal truncated protein comprising only 271 amino acids. The genomic sequence of porcine CREB3L4 spans approximately 6 kb consisted of ten exons and nine introns, and maps closely to Jumping translocation breakpoint gene in a head-to-head manner on the q arm of Sus Scrofa chromosome 4. Tissue expression analysis by RT-PCR indicates that normal porcine CREB3L4 is ubiquitously expressed with relatively high abundance in stomach, liver, cerebellum, and is a predominant form in various tissues, whereas the splicing variant is expressed at extremely low level in all examined tissues. Our study will lay the groundwork for the further investigation on the physiological function of CREB3L4 in pig models.

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Abbreviations

ATF:

Active transcription factor

bZIP:

Basic region and leucine zipper

CREB:

cAMP response element binding protein

ER:

Endoplasmic reticulum

HCC:

Hepatocellular carcinomas

JTB:

Jumping translocation breakpoint

NCBI:

National Center for Biotechnology Information

S1P:

Site 1 protease

TM:

Transmembrane

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Acknowledgments

We are grateful to Dr. Martine Yerle and Denis Milan (INRA, Castanet-Tolosan, France) for kindly providing the RH panel. This work was supported by the grants from 973 Programme (2006CB102100), 863 Programme (2008AA10Z134, 2006AA10Z140), High Education Doctorial Subject Research Programme (20060504016), General Programme (30771585,30600438) and Key Programe (30330440) of National Natural Science Foundation of China.

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Authors and Affiliations

  1. College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People’s Republic of China

    Y. M. Qi & L. Gan

  2. Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People’s Republic of China

    T. Lei, L. Zhou, X. D. Chen, Q. Q. Long, H. Long, D. Jin & Z. Q. Yang

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  1. Y. M. Qi
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Correspondence to Z. Q. Yang.

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Qi, Y.M., Lei, T., Zhou, L. et al. Genomic organization, alternative splicing and tissues expression of porcine CREB3L4 gene. Mol Biol Rep 36, 1881–1888 (2009). https://doi.org/10.1007/s11033-008-9394-1

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  • DOI: https://doi.org/10.1007/s11033-008-9394-1

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