Defensin Alpha4 Polyclonal Antibody

SKU:BHA12104804
Overview
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DEFA4-specific polyclonal antibody raised in Rabbit. Validated for Immunohistochemistry, ELISA in Human samples. Affinity-purified rabbit IgG.
Specificity Total Protein
Immunogen Synthetic Peptide
Molecular Weight ~10.5 kDa
UniProt P12838
Gene ID Human: 1669
Applications 2 validated
Options selector
Catalog no. Size
BT-AP02563-20UL 20 uL
BT-AP02563-50UL 50 uL
BT-AP02563-100UL 100 uL
Available Options
Size
Field Specification
Mfr No BT-AP02563
Alternative Names DEFA4; DEF4; Neutrophil defensin 4; Defensin; alpha 4; HNP-4; HP-4
Clonality
  • Polyclonal
Concentration 1 mg/ml
Formulation Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Gene ID Human: 1669
Host Rabbit
Immunogen The antiserum was produced against synthesized peptide derived from human Defensin alpha4. AA range:27-76
Isotype
  • IgG
Molecular Weight ~10.5 kDa
Product Type
  • Primary Antibody
Reactivity
  • Human
Storage -20°C for 1 year
Target DEFA4

Product Overview

Primary Antibody

This antibody targets DEFA4 and detects endogenous levels of DEFA4 protein.

Validated Applications

Application Dilution Guidance
Immunohistochemistry (IHC) Refer to datasheet for recommended working dilution
ELISA Refer to datasheet for recommended working dilution
✔ Validated by Bioassay Technology Laboratory

Antibody Specifications

Target DEFA4
Host Rabbit
Clonality Polyclonal
Isotype IgG
Reactivity Human
Purification Affinity Purification
Molecular Weight ~10.5 kDa
Concentration 1 mg/ml
Immunogen The antiserum was produced against synthesized peptide derived from human Defensin alpha4. AA range:27-76
Formulation Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Storage -20°C for 1 year
Gene ID Human: 1669
UniProt P12838 (Human: P12838)

Scientific Background

Defensins are a family of antimicrobial 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 are clustered on chromosome 8. DEFA4 differs from other genes of this family by an extra 83-base segment that is apparently the result of a recent duplication within the coding region. Neutrophil defensin 4 encoded by DEFA4, defensin, alpha 4, is found in the neutrophils; it exhibits corticostatic activity and inhibits corticotropin stimulated corticosterone production.

Alternative Names

DEFA4; DEF4; Neutrophil defensin 4; Defensin; alpha 4; HNP-4; HP-4

Safety & Handling

⚠ Research Use Only (RUO). Not approved for diagnostic or therapeutic use. Handle with standard laboratory safety precautions. Contains sodium azide — avoid contact with skin/eyes; dispose per local regulations.
TargetDEFA4
HostRabbit
ClonalityPolyclonal
IsotypeIgG
ReactivityHuman
PurificationAffinity Purification
Molecular Weight~10.5 kDa
Concentration1 mg/ml
ImmunogenThe antiserum was produced against synthesized peptide derived from human Defensin alpha4. AA range:27-76
FormulationLiquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Storage-20°C for 1 year
Gene IDHuman: 1669
UniProtP12838 (Human: P12838)

Optimized working dilutions depend on sample type and detection system. Titration is recommended.

ApplicationDilution Note
Immunohistochemistry (IHC)Refer to datasheet for recommended working dilution
ELISARefer to datasheet for recommended working dilution

Defensins are a family of antimicrobial 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 are clustered on chromosome 8. DEFA4 differs from other genes of this family by an extra 83-base segment that is apparently the result of a recent duplication within the coding region. Neutrophil defensin 4 encoded by DEFA4, defensin, alpha 4, is found in the neutrophils; it exhibits corticostatic activity and inhibits corticotropin stimulated corticosterone production.

Alternative Names

DEFA4; DEF4; Neutrophil defensin 4; Defensin; alpha 4; HNP-4; HP-4

What species does this antibody react with?
This antibody has been validated for reactivity against Human. Actual cross-reactivity is determined by immunogen sequence homology across species. Contact technical support for unlisted species.
What applications has this antibody been validated for?
Validated applications include: Immunohistochemistry (IHC), ELISA. Each application was tested with positive and negative controls. Contact our team regarding applications not listed.
How was this antibody produced and purified?
This polyclonal IgG antibody was raised in rabbit against a synthesized target-specific peptide. It was affinity-purified from antiserum using an epitope-specific immunogen, yielding a highly specific antibody suitable for multiple research applications.
What is the expected molecular weight of DEFA4?
The predicted molecular weight of DEFA4 is ~10.5 kDa. Band size may vary slightly depending on post-translational modifications and gel percentage.
What storage conditions does this antibody require?
Store at −20°C for long-term storage. Avoid repeated freeze-thaw cycles. Working aliquots can be stored at 4°C for short-term use. The formulation includes 50% glycerol as a cryoprotectant.

Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.

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