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Asian-Australas J Anim Sci > Volume 23(2); 2010 > Article
Animal Biotechnology
Asian-Australasian Journal of Animal Sciences 2010;23(2): 272-278.
DOI: https://doi.org/10.5713/ajas.2010.90275    Published online December 22, 2009.
Molecular Cloning, Tissue Distribution and Expression of Porcine y+L Amino Acid Transporter-1
Ai-min Zhi, Xiang-yan Zhou, Jian-jun Zuo, Shi-geng Zou, Zhi-yi Huang, Xiao-lan Wang, Lin Tao, Ding-yuan Feng
Abstract
In this study, we cloned, sequenced and characterized porcine y+L Amino Acid Transporter-1 (y+LAT1). By screening a translated EST database with the protein sequence of the human y+LAT1 and by using rapid amplification of cDNA ends (RACE), the full-length cDNA encoding porcine y+LAT1 was isolated from porcine intestine RNA. It was 2,111 bp long, encoding a 511 amino acid trans-membrane glycoprotein composed of 12 transmembrane domains. The predicted amino acid sequence was found to be 91%, 90%, 87% and 87% identical to those of cattle, human, mouse and rat y+LAT1 respectively. Real-time RT-PCR results indicated that the small intestine had the highest y+LAT1 mRNA abundance and the lung had the lowest y+LAT1 mRNA abundance. Baby hamster kidney (BHK) cells transfected with green fluorescent protein (GFP) tagged porcine y+LAT1 cDNA indicated that the cellular localization of the gene product in BHK was on the plasma membrane.
Keywords: Cloning; Pig; Amino Acid Transporter; y+LAT1; SLC7A7


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