BD1 Active Protein | DEFB1 active protein
BD1, Recombinant, Human (beta Defensin-1)
Gene Names
DEFB1; BD1; HBD1; DEFB-1; DEFB101; MGC51822
Reactivity
Human
Purity
Highly Purified98% 0.1ng/ug (1.0EU/ug).
Synonyms
BD1; Recombinant; Human (beta Defensin-1); DEFB1 active protein
Reactivity
Human
Purity/Purification
Highly Purified
98% 0.1ng/ug (1.0EU/ug).
98% 0.1ng/ug (1.0EU/ug).
Form/Format
Supplied as a lyophilized powder from 10mM acetic acid.
Sequence
Human defensin-1 (hBD-1; 36 aa): DHYNCVSSGG QCLYSACPIF TKIQGTCYRG KAKCCK
Biological Activity
The HBD-1 recombinant protein activity was determined by its ability to chemoattract human peripheral blood dendritic cells using a concentration range of 100-1000ng/ml
Antimicrobial peptides are a common mechanism of host defense utilized by a variety of species, from insects to humans. Defensins are a large family of broad-spectrum antimicrobial peptides, identified originally in leukocytes of rabbits and humans. Defensins, cationic/polar peptides (30-35 aa; 3-4kD), are distinguished by a conserved tri-disulfides and a largely b-Sheet structure. Defensins, expressed at the cell surface, have been hypothesized to function as a biochemical barrier against microbial infection by inhibiting colonization of the epithelium by wide range of pathogenic microorganisms. In leukocytes, these peptides are stored in cytoplasmic granules and are released into phagolysosomes where they contribute to the killing of engulfed microorganisms.
The genes encoding human alpha and beta-defensins are clustered in a contiguous segment of chromosome 8p23. Defensins are classified into two families designated alpha and beta based on distinctive, although similar, tri-disulfide linkages in the peptides. b-defensins are slightly larger and differ in the position and arrangement of 3 disulfides. In humans, six a-defensin (cryptidins), HD 1-6 (HD1-4 are also known as HNP1-4 for Human Neutrophil Peptides), and two b-defensins, HBD-1 and HBD-2, have been identified.
Alpha-defensins are encoded by genes designated DEFA1-6, whereas human b-defensins are encoded by the DEFB1 and DEFb2 genes. HD1-4 are expressed in neutrophils, whereas HD5 and HD6 are expressed in epithelial cells of the intestinal and reproductive tract. HD1-3/HNP1-3 make up about 30% of the neutrophil's total granule protein. The HNPs are 29 to 30 amino acids long and are identical in sequence except at the N-terminal amino acid. DEFA1 and DEFA3 differ from each other only by their terminal ala and asp, respectively. DEFA2 is identical to both except that it has 29 instead of 30 amino acids.
Antimicrobial peptides are a common mechanism of host defense utilized by a variety of species, from insects to humans. Defensins are a large family of broad-spectrum antimicrobial peptides, identified originally in leukocytes of rabbits and humans. Defensins, cationic/polar peptides (30-35 aa; 3-4kD), are distinguished by a conserved tri-disulfides and a largely b-Sheet structure. Defensins, expressed at the cell surface, have been hypothesized to function as a biochemical barrier against microbial infection by inhibiting colonization of the epithelium by wide range of pathogenic microorganisms. In leukocytes, these peptides are stored in cytoplasmic granules and are released into phagolysosomes where they contribute to the killing of engulfed microorganisms.
The genes encoding human alpha and beta-defensins are clustered in a contiguous segment of chromosome 8p23. Defensins are classified into two families designated alpha and beta based on distinctive, although similar, tri-disulfide linkages in the peptides. b-defensins are slightly larger and differ in the position and arrangement of 3 disulfides. In humans, six a-defensin (cryptidins), HD 1-6 (HD1-4 are also known as HNP1-4 for Human Neutrophil Peptides), and two b-defensins, HBD-1 and HBD-2, have been identified.
Alpha-defensins are encoded by genes designated DEFA1-6, whereas human b-defensins are encoded by the DEFB1 and DEFb2 genes. HD1-4 are expressed in neutrophils, whereas HD5 and HD6 are expressed in epithelial cells of the intestinal and reproductive tract. HD1-3/HNP1-3 make up about 30% of the neutrophil's total granule protein. The HNPs are 29 to 30 amino acids long and are identical in sequence except at the N-terminal amino acid. DEFA1 and DEFA3 differ from each other only by their terminal ala and asp, respectively. DEFA2 is identical to both except that it has 29 instead of 30 amino acids.
Endotoxin Level
< 0.1ng/ug (1.0EU/ug)
Preparation and Storage
Lyophilized powder may be stored at -20 degree C. Stable for 12 months at -20 degree C. Reconstitute with sterile buffer or ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20 degree C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Product Categories/Family for DEFB1 active protein
NCBI and Uniprot Product Information
NCBI GI #
NCBI GeneID
NCBI Accession #
NCBI GenBank Nucleotide #
Molecular Weight
3.9kD
NCBI Official Full Name
beta-defensin 1 preproprotein
NCBI Official Synonym Full Names
defensin, beta 1
NCBI Official Symbol
DEFB1
NCBI Official Synonym Symbols
BD1; HBD1; DEFB-1; DEFB101; MGC51822
NCBI Protein Information
beta-defensin 1; BD-1; beta-defensin-1; OTTHUMP00000159500
UniProt Protein Name
Beta-defensin 1
Protein Family
UniProt Gene Name
DEFB1
UniProt Synonym Gene Names
BD1; HBD1
UniProt Entry Name
DEFB1_HUMAN
NCBI Description
Defensins form a family of microbicidal and cytotoxic peptides made by neutrophils. Members of the defensin family are highly similar in protein sequence. This gene encodes defensin, beta 1, an antimicrobial peptide implicated in the resistance of epithelial surfaces to microbial colonization. This gene maps in close proximity to defensin family member, defensin, alpha 1 and has been implicated in the pathogenesis of cystic fibrosis. [provided by RefSeq]
Uniprot Description
Function: Has bactericidal activity
Subcellular location: Secreted.
Tissue specificity: Plasma.
Sequence similarities: Belongs to the beta-defensin family.
Mass spectrometry: Molecular mass is 3928±0.5 Da from positions 33 - 68. Determined by ESI. Ref.5
