Human DEFA1 (P59665) partial recombinant protein expressed in Escherichia coli.
Theoretical MW (kDa):
Escherichia coli expression system
Endotoxin level is <0.1 ng/ug of protein (<1 EU/ug).
Determined by its ability to chemoattract immature dendritic cells using a concentration of 1.0-10.0 ng/mL.
Activity assay SDS-PAGE The optimal working dilution should be determined by the end user.
Lyophilized from solutions contain no sodiun azide nor carrier protein.
Store at -20°C. Reconstitute in water to a concentration of 0.1-1.0 mg/mL. Do not vortex. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.
Defensins are a family of microbicidal and cytotoxic peptides thought to be involved in host defense. They are abundant in the granules of neutrophils and also found in the epithelia of mucosal surfaces such as those of the intestine, respiratory tract, urinary tract, and vagina. Members of the defensin family are highly similar in protein sequence and distinguished by a conserved cysteine motif. Several alpha defensin genes appear to be clustered on chromosome 8. The protein encoded by this gene, defensin, alpha 1, is found in the microbicidal granules of neutrophils and likely plays a role in phagocyte-mediated host defense. It differs from defensin, alpha 3 by only one amino acid. [provided by RefSeq