This DEFA5 Sandwich ELISA is an in-vitro enzyme-linked immunosorbent assay for the measurement of samples in human serum, plasma and other biological fluids.
Applications
ELISA
Reactivity
Human
Sensitivity
9.38pg/mL
Detection Limit
15.63~1000pg/mL
Note
FOR SCIENTIFIC EDUCATIONAL RESEARCH USE ONLY (RUO). MUST NOT BE USED IN DIAGNOSTIC OR OTHER MEDICAL APPLICATIONS.
Product Properties
Storage Instruction
If unopened the kit may be stored at 2-8°C for up to 1 month. If the kit will not be used within 1 month, store the components separately, according to the component table in the manual.
This kit recognizes Human DEF Alpha 5 in samples. No significant cross-reactivity or interference between Human DEF Alpha 5 and analogues was observed.
Sample Type
Serum, plasma and other biological fluids
Additional Info
Post Translational Modifications
Glycosylated. Proteolytically cleaved at Arg-62 by trypsin. Both the propeptide form proHD5/HD5(20-94) and HD5(56-94) are cleaved into the lumenal peptide form HD5(63-94) by trypsin. Unprocessed proHD5 exerts antimicrobial activities, but peptide potency is enhanced by peptide processing. Proteolytically cleaved in duodenal fluid.derived fragments are antimicrobially active against commensal bacteria (in vitro). (Microbial infection) The disulfide bridges and homodimerization are a prerequisite for the enhancement of S.flexneri adhesion and invasion.
Function
Host-defense peptide that maintains sterility in the urogenital system. Has antimicrobial activity against a wide range of bacteria, including Gram-negative E.coli, P.aeruginosa and S.typhimurium, and Gram-positive E.aerogenes, S.aureus, B.cereus, E.faecium and L.monocytogenes. Confers resistance to intestinal infection by S.typhimurium. Exhibits antimicrobial activity against enteric commensal bacteria such as B.adolescentis, L.acidophilus, B.breve, L.fermentum, B.longum and S.thermophilus. Binds to bacterial membranes and causes membrane disintegration. Induces the secretion of the chemokine IL-8 by intestinal epithelial cells. Binds to B.antracis lef/lethal factor, a major virulence factor from B.anthracis, and neutralizes its enzymatic activity. (Microbial infection) Acts as a target for S.flexneri infection by binding to the bacterium, possibly via bacterial surface proteins, and thereby augmenting infectivity via enhanced bacterial adhesion and invasion of epithelial cells and tissues.
SecretedCytoplasmic VesicleSecretory VesicleStored As Propeptide Hd5(20-94) In Secretory Granules Of Small Intestinal Paneth Cells And Found In The Ileum Lumen As Processed Mature PeptidesPredominantly In The Hd5(63-94) FormPeptides Hd5(20-94)Hd5(23-94) And Hd5(29-94) Are Found Within TissuesHd5(20-94) Being The Predominant Intracellular FormPeptides Hd5(56-94) And Hd5(63-94) Are Found In The Extracellular MilieuHd5(63-94) Being The Most Abundant FormSecreted Into The Female Genital Tract Lumen
