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DEFA1
HPA
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  • DEFA1
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

DEFA1
Synonyms DEF1, DEFA2, HNP-1, MRS
Gene descriptioni

Full gene name according to HGNC.

Defensin alpha 1
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Cancer-related genes
Plasma proteins
Transporters
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Secreted
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 8
Cytoband p23.1
Chromosome location (bp) 6977649 - 6980092
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

2
Ensembl ENSG00000206047 (version 109)
Entrez gene 1667
HGNC HGNC:2761
UniProt P59665 (UniProt - Evidence at protein level)
neXtProt NX_P59665
GeneCards DEFA1
Antibodypedia DEFA1 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Effector molecule of the innate immune system that acts via antibiotic-like properties against a broad array of infectious agents including bacteria, fungi, and viruses or by promoting the activation and maturation of some APCs 1, 2, 3, 4. Interacts with the essential precursor of cell wall synthesis lipid II to inhibit bacterial cell wall synthesis 5. Inhibits adenovirus infection via inhibition of viral disassembly at the vertex region, thereby restricting the release of internal capsid protein pVI, which is required for endosomal membrane penetration during cell entry 6. In addition, interaction with adenovirus capsid leads to the redirection of viral particles to TLR4 thereby promoting a NLRP3-mediated inflammasome response and interleukin 1-beta (IL-1beta) release 7. Induces the production of proinflammatory cytokines including type I interferon (IFN) in plasmacytoid dendritic cells (pDCs) by triggering the degradation of NFKBIA and nuclear translocation of IRF1, both of which are required for activation of pDCs 8.... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

Antibiotic, Antimicrobial, Defensin, Fungicide
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Antiviral defense, Host-virus interaction
Gene summary (Entrez)i

Useful information about the gene from Entrez

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. 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. Several alpha defensin genes are clustered on chromosome 8. This gene differs from defensin, alpha 3 by only one amino acid. This gene and the gene encoding defensin, alpha 3 are both subject to copy number variation. [provided by RefSeq, Oct 2014]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
DEFA1-201
ENSP00000372126
ENST00000382679
P59665
[Direct mapping] Neutrophil defensin 1 HP 1-56 Neutrophil defensin 2
Show all
Transporters
   Transporter channels and pores
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Plasma proteins
Cancer-related genes
   Candidate cancer biomarkers
Mapped to neXtProt
   neXtProt - Evidence at protein level
Show all
GO:0002227 [innate immune response in mucosa]
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005615 [extracellular space]
GO:0005796 [Golgi lumen]
GO:0006935 [chemotaxis]
GO:0006952 [defense response]
GO:0006955 [immune response]
GO:0010818 [T cell chemotaxis]
GO:0019731 [antibacterial humoral response]
GO:0030520 [intracellular estrogen receptor signaling pathway]
GO:0031640 [killing of cells of another organism]
GO:0035578 [azurophil granule lumen]
GO:0042742 [defense response to bacterium]
GO:0042832 [defense response to protozoan]
GO:0050829 [defense response to Gram-negative bacterium]
GO:0050830 [defense response to Gram-positive bacterium]
GO:0050832 [defense response to fungus]
GO:0051607 [defense response to virus]
GO:0051873 [killing by host of symbiont cells]
GO:0061844 [antimicrobial humoral immune response mediated by antimicrobial peptide]
GO:0062023 [collagen-containing extracellular matrix]
GO:0070062 [extracellular exosome]
GO:0071222 [cellular response to lipopolysaccharide]
GO:0140911 []
Show all
94 aa
10.2 kDa
Yes 0
DEFA1-202
ENSP00000372139
ENST00000382692
P59665
[Direct mapping] Neutrophil defensin 1 HP 1-56 Neutrophil defensin 2
Show all
Transporters
   Transporter channels and pores
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Plasma proteins
Cancer-related genes
   Candidate cancer biomarkers
Mapped to neXtProt
   neXtProt - Evidence at protein level
Show all
GO:0002227 [innate immune response in mucosa]
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005615 [extracellular space]
GO:0005796 [Golgi lumen]
GO:0006935 [chemotaxis]
GO:0006952 [defense response]
GO:0006955 [immune response]
GO:0010818 [T cell chemotaxis]
GO:0019731 [antibacterial humoral response]
GO:0030520 [intracellular estrogen receptor signaling pathway]
GO:0031640 [killing of cells of another organism]
GO:0035578 [azurophil granule lumen]
GO:0042742 [defense response to bacterium]
GO:0042832 [defense response to protozoan]
GO:0050829 [defense response to Gram-negative bacterium]
GO:0050830 [defense response to Gram-positive bacterium]
GO:0050832 [defense response to fungus]
GO:0051607 [defense response to virus]
GO:0051873 [killing by host of symbiont cells]
GO:0061844 [antimicrobial humoral immune response mediated by antimicrobial peptide]
GO:0062023 [collagen-containing extracellular matrix]
GO:0070062 [extracellular exosome]
GO:0071222 [cellular response to lipopolysaccharide]
GO:0140911 []
Show all
94 aa
10.2 kDa
Yes 0

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