Nakhai, BSridhar, PTalwar, G PHasnain, S E1991-08-012009-05-271991-08-012009-05-271991-08-01Nakhai B, Sridhar P, Talwar GP, Hasnain SE. Construction, purification and characterization of a recombinant baculovirus containing the gene for alpha subunit of human chorionic gonadotropin. Indian Journal of Biochemistry & Biophysics. 1991 Aug; 28(4): 237-42http://imsear.searo.who.int/handle/123456789/26280A cDNA encoding the alpha subunit of human chorionic gonadotropin, a placental glycoprotein hormone, was cloned downstream to the viral polyhedrin gene promoter of Autographa california nuclear polyhedrosis virus and the recombinant transfer vector was used to co-transfect Spodoptera frugiperda cells growing in culture. Recombinant baculovirus carrying the alpha hCG gene was detected and isolated after dot hybridization using supernatant from co-transfected cells. Recombinant vAc alpha hCG having a replacement of the viral polyhedrin gene, which is hyper-transcribed very late in the infection cycle, with the alpha hCG cDNA was purified after a single round of plaque purification. Insect cell culture infected with vAc alpha hCG, secreted high levels of hCG which was biologically active.engBaculoviridae --geneticsCloning, MolecularDNA --geneticsGenetic VectorsGlycoprotein Hormones, alpha Subunit --geneticsHumansRestriction MappingJournal Article