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Screening of HBcAg interacting proteins in hepatocytes with yeast-two hybrid technique
Yin-Ying Lu, Lin Wang, Jun Cheng, Ke Li, Yan Liu, Ling-Xia Zhang
Yin-Ying Lu, Lin Wang, Jun Cheng, Ke Li, Yan Liu, Ling-Xia Zhang, Gene Therapy Research Center, Institute of Infectious Diseases, The 302 Hospital of PLA, Beijing 100039, China
Correspondence to: Jun Cheng, Gene Therapy Research Center, Institute of Infectious Diseases, The 302 Hospital of PLA, Beijing 100039, China. cj@genetherapy.com.cn
Received: October 29, 2002 Revised: November 15, 2002 Accepted: November 28, 2002 Published online: April 15, 2003
AIM
To screen proteins in hepatocytes interacting with hepatitis B virus core protein (HBcAg) with yeast-two hybrid technique for investigating the biological functions of HBcAg.
METHODS
The HBcAg gene was amplified by polymerase chain reaction (PCR) and HBcAg bait plasmid was constructed with yeast-two hybrid system 3, then transformed into yeast AH109. The transformed yeast mated with yeast Y187 containing liver cDNA library plasmid in 2×YPDA medium. Diploid yeast was plated on synthetic dropout nutrient medium (SD/-Trp-Leu-His-Ade) and synthetic dropout nutrient medium (SD/-Trp-Leu-His-Ade) containing X-α-gal for selecting two times and screening. After extracting and sequencing of plasmid from blue colonies, the results were analyzed by bioinformatics.
RESULTS
Sixteen colonies were sequenced, of which, two colonies were metallothionein 2A, one NAD(P)H dehydrogenase, one complement component 8 a polypeptide, one retinoic acid receptor responder (tazarotene induced), one cytochromeb, one cytochrome c oxidase subunit II , one albumin, two DAZ associated protein 2, two mitochondrial ribosomal protein L41 and four new genes with unknown function.
CONCLUSION
Genes of HBcAg interacting proteins in hepatocytes were successfully cloned and the results provided some new clues for studying the biological functions of HBcAg and its associated proteins.
Key Words: N/A
Citation: Lu YY, Wang L, Cheng J, Li K, Liu Y, Zhang LX. Screening of HBcAg interacting proteins in hepatocytes with yeast-two hybrid technique. Shijie Huaren Xiaohua Zazhi 2003; 11(4): 426-429
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