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SRP3011 Sigma-Aldrich

Beta D-1 (36 aa) human

recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), cell culture tested

Synonym: DEFB1, beta-Defensin-1

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Properties

Related Categories A - K, Antibacterial, Antibiotic Peptides, Antibiotics, Antibiotics A to Z,
biological source   human
recombinant   expressed in E. coli
assay   ≥98% (HPLC)
  ≥98% (SDS-PAGE)
form   lyophilized
mol wt   mol wt 7.8 kDa
packaging   pkg of 20 μg
impurities   <0.1 EU/μg endotoxin, tested
color   white to off-white
suitability   cell culture tested
Mode of action   cell membrane | interferes
UniProt accession no.   P60022
antibiotic activity spectrum   fungi
  mycobacteria
  viruses
shipped in   wet ice
storage temp.   −20°C
Gene Information   human ... DEFB1(1672)

Description

Biochem/physiol Actions

Defensins (alpha and beta) are cationic peptides with a broad spectrum of antimicrobial activity that comprise an important arm of the innate immune system. Recombinant human BD-1 is a 3.9 kDa protein containing 36 amino acid residues.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in 10 mM Acetic Acid to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. 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.

Physical form

Lyophilized from 10 mM Acetic Acid.

General description

Chemical structure: peptide

Defensins (alpha and beta) are cationic peptides with a broad spectrum of antimicrobial activity that comprise an important arm of the innate immune system. The α-defensins are distinguished from the β-defensins by the pairing of their three disulfide bonds. To date, four human β-defensins have been identified; BD-1, BD-2, BD-3 and BD-4. β-defensins are expressed on some leukocytes and at epithelial surfaces. In addition to their direct antimicrobial activities, they are chemoattractant towards immature dendritic cells and memory T cells. The b-defensin proteins are expressed as the C-terminal portion of precursors and are released by proteolytic cleavage of a signal sequence and, in the case of BD-1 (36a.a.), a propeptide region. β-defensins contain a six-cysteine motif that forms three intra-molecular disulfide bonds. b-defensins are 3-5 kDa peptides ranging in size from 33-47 amino acid residues. Recombinant human BD-1 is a 3.9 kDa protein containing 36 amino acid residues.

Sequence

DHYNCVSSGG QCLYSACPIF TKIQGTCYRG KAKCCK

Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis


Request a Serum Sample

Milli-Q® Water Purification Solutions
Protocols & Articles
Peer-Reviewed Papers
15

References

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