PCR products were cloned into the plasmid pDrive cloning vector and subcloned into the
plasmid pET28a expression vector. Recombinant calpastatin corresponding to domain I had the size
approximately 21 kDa. The recombinant calpastatin used as immunogens applied to an immunized
rabbit. Polyclonal antibodies, were raised in the rabbit against recombinant calpastatin, specifically
recognized the calpastatin protein of approximately 130 kDa as determined by the Western immunoblot
analysis. These results indicated that calpastatin domain I was presented within the recombinant
calpastatin protein and direct subcutaneous of immunization of recombinant calpastatin into rabbit was
effective in polyclonal antibodies production against calpastatin.
Key words: cloning, polyclonal antibodies, calpastatin gene, Kamphaeng Saen beef breed
1 Department of Animal Husbandry, Faculty of Agriculture, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom
73140, Thailand.
2 Department of Pathology, Faculty of Veterinary Medicine, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom
73140, Thailand.
3 Department of Animal Production Technology, Faculty of Agricultural Technology, King Mongkut’s Institute of Technology
Ladkrabang, Bangkok 10520, Thailand.
* Corresponding author, e-mail: ktpiyada@yahoo.com
Received date : 09/11/06 Accepted date : 07/03/07
INTRODUCTION
Consumers consider tenderness to be the
most important