NCIt definition : Beta-defensin 1 (68 aa, 7 kDa) is encoded by the human DEFB1 gene. This protein is
involved in chemotaxis and has bactericidal activity.;
NCIt note : Encoded by human DEFB1 Gene (Beta-Defensin Family), Beta-Defensin 1 Protein prepropeptide
contains a 68-amino acid secreted antimicrobial plasma peptide implicated in cystic
fibrosis pathogenesis. Multiple plasma forms are bound to carrier macromolecules.
Highest DEFB1 concentrations occur in kidney and female reproductive tract epithelia.
DEFB1 may act in innate immunity. Mammalian alpha- and beta-defensins comprise 3.5-
to 5-kD cysteine- and arginine-rich neutrophilic microbicidal and cytotoxic peptides.
(from LocusLink, Swiss-Prot, OMIM, and NCI);