title: Cloning, sequencing and expression of cDNA of bovine neutrophil beta-defensin from water buffalo (Bubalus bubalis).
abstract: Neutrophil beta-defensins have been identified as naturally occurring potent antibacterial cationic peptides serving as effector molecules of innate immunity that provide a first line of defence against pathogens. Considering the broad-spectrum antimicrobial activity against microorganisms and role in innate immunity of the neutrophil beta-defensins, it has been characterized in many livestock species including cattle, sheep, caprine and porcines. Here we report the isolation, cloning, sequencing and expression of precursor bovine neutrophil beta-defensin isolated from Indian water buffalo. Full-length cDNA was amplified using reverse transcription polymerase chain reaction (RT-PCR). The cDNA contained an open reading frame of 192 bp encoding a putative polypeptide of 63 amino acids. Deduced amino acid sequence of buffalo BNBD4 showed varying amino acid identity with the published sequences of related beta-defensins of other domestic ruminant species ranging from 67.18 to 79.68%. Recombinant buffalo defensin was produced in Escherichia coli as fusion protein.
authors.affiliation: Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India. bcbpatent@rediffmail.com
authors.forename: B C
authors.initials: BC
authors.lastname: Bera
authors.forename: P
authors.initials: P
authors.lastname: Chaudhury
authors.forename: D
authors.initials: D
authors.lastname: Bhattacharya
authors.forename: A K
authors.initials: AK
authors.lastname: Bera
authors.forename: S K
authors.initials: SK
authors.lastname: Das
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002020:Buffaloes / Q000235:genetics*; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000235:genetics; D008969:Molecular Sequence Data; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D023083:beta-Defensins / Q000235:genetics* / Q000378:metabolism
chemical_list: D018076:DNA, Complementary; D011993:Recombinant Fusion Proteins; D023083:beta-Defensins