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Aliases for DEFB105B Gene

Aliases for DEFB105B Gene

  • Defensin Beta 105B 2 3 5
  • Defensin, Beta 105B 2 3
  • Defensin, Beta 105 3 4
  • Beta-Defensin 5 3 4
  • DEFB-5 3 4
  • BD-5 3 4
  • DEFB105A DEFB105B 4
  • DEFB105 4
  • DEFB5 4
  • BD5 4

External Ids for DEFB105B Gene

Previous GeneCards Identifiers for DEFB105B Gene

  • GC08U900546
  • GC08P007334

Summaries for DEFB105B Gene

Entrez Gene Summary for DEFB105B Gene

  • Defensins form a family of antimicrobial and cytotoxic peptides made by neutrophils. Defensins are short, processed peptide molecules that are classified by structure into three groups: alpha-defensins, beta-defensins and theta-defensins. All beta-defensin genes are densely clustered in four to five syntenic chromosomal regions. Chromosome 8p23 contains at least two copies of the duplicated beta-defensin cluster. This duplication results in two identical copies of defensin, beta 105, DEFB105A and DEFB105B, in tail-to-tail orientation. This gene, DEFB105B, represents the more telomeric copy. [provided by RefSeq, Oct 2014]

GeneCards Summary for DEFB105B Gene

DEFB105B (Defensin Beta 105B) is a Protein Coding gene. Among its related pathways are Immune System and Defensins. An important paralog of this gene is DEFB105A.

UniProtKB/Swiss-Prot for DEFB105B Gene

  • Has antibacterial activity.

No data available for Tocris Summary , Gene Wiki entry , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for DEFB105B Gene

Genomics for DEFB105B Gene

Regulatory Elements for DEFB105B Gene

Enhancers for DEFB105B Gene
GeneHancer Identifier Score Enhancer Sources TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor Binding Sites within enhancer Other Gene Targets for Enhancer

Enhancers around DEFB105B on UCSC Golden Path with GeneCards custom track

Genomic Location for DEFB105B Gene

7,487,668 bp from pter
7,490,779 bp from pter
3,112 bases
Plus strand

Genomic View for DEFB105B Gene

Genes around DEFB105B on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
DEFB105B Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for DEFB105B Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for DEFB105B Gene

Proteins for DEFB105B Gene

  • Protein details for DEFB105B Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Beta-defensin 105
    Protein Accession:
    Secondary Accessions:
    • A1A581
    • Q8IZN8

    Protein attributes for DEFB105B Gene

    78 amino acids
    Molecular mass:
    8923 Da
    Quaternary structure:
    No Data Available

neXtProt entry for DEFB105B Gene

Proteomics data for DEFB105B Gene at MOPED

Post-translational modifications for DEFB105B Gene

No Post-translational modifications

Other Protein References for DEFB105B Gene

ENSEMBL proteins:
REFSEQ proteins:

No data available for DME Specific Peptides for DEFB105B Gene

Domains & Families for DEFB105B Gene

Gene Families for DEFB105B Gene

Protein Domains for DEFB105B Gene


Suggested Antigen Peptide Sequences for DEFB105B Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the beta-defensin family.
  • Belongs to the beta-defensin family.
genes like me logo Genes that share domains with DEFB105B: view

Function for DEFB105B Gene

Molecular function for DEFB105B Gene

UniProtKB/Swiss-Prot Function:
Has antibacterial activity.

Phenotypes for DEFB105B Gene

GenomeRNAi human phenotypes for DEFB105B:
genes like me logo Genes that share phenotypes with DEFB105B: view

Animal Model Products

No data available for Enzyme Numbers (IUBMB) , Gene Ontology (GO) - Molecular Function , Human Phenotype Ontology , Animal Models , Transcription Factor Targets and HOMER Transcription for DEFB105B Gene

Localization for DEFB105B Gene

Subcellular locations from UniProtKB/Swiss-Prot for DEFB105B Gene

Subcellular locations from

Jensen Localization Image for DEFB105B Gene COMPARTMENTS Subcellular localization image for DEFB105B gene
Compartment Confidence
extracellular 5

No data available for Gene Ontology (GO) - Cellular Components for DEFB105B Gene

Pathways & Interactions for DEFB105B Gene

SuperPathways for DEFB105B Gene

Superpath Contained pathways
1 Defensins
2 Immune System
genes like me logo Genes that share pathways with DEFB105B: view

Pathways by source for DEFB105B Gene

4 Reactome pathways for DEFB105B Gene

Interacting Proteins for DEFB105B Gene

Gene Ontology (GO) - Biological Process for DEFB105B Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0045087 innate immune response IBA --
genes like me logo Genes that share ontologies with DEFB105B: view

No data available for SIGNOR curated interactions for DEFB105B Gene

Drugs & Compounds for DEFB105B Gene

No Compound Related Data Available

Transcripts for DEFB105B Gene

mRNA/cDNA for DEFB105B Gene

(1) REFSEQ mRNAs :
(1) Ensembl transcripts including schematic representations, and UCSC links where relevant :

Alternative Splicing Database (ASD) splice patterns (SP) for DEFB105B Gene

No ASD Table

Relevant External Links for DEFB105B Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for DEFB105B Gene

mRNA expression in normal human tissues for DEFB105B Gene

SOURCE GeneReport for Unigene cluster for DEFB105B Gene Hs.381378

mRNA Expression by UniProt/SwissProt for DEFB105B Gene

Tissue specificity: Specifically expressed in testis.
genes like me logo Genes that share expression patterns with DEFB105B: view

Primer Products

No data available for mRNA expression in embryonic tissues and stem cells from LifeMap Discovery , mRNA differential expression in normal tissues , Protein differential expression in normal tissues , Protein expression and Protein tissue co-expression partners for DEFB105B Gene

Orthologs for DEFB105B Gene

This gene was present in the common ancestor of mammals.

Orthologs for DEFB105B Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia LOC100296624 35
  • 76.92 (n)
  • 64.1 (a)
(Canis familiaris)
Mammalia DEFB105A 35
  • 79.91 (n)
  • 67.95 (a)
-- 36
  • 62 (a)
-- 36
  • 62 (a)
CBD105 36
  • 67 (a)
(Mus musculus)
Mammalia Defb12 35
  • 76.07 (n)
  • 66.67 (a)
Defb12 16
Defb12 36
  • 61 (a)
Defb35 36
  • 59 (a)
(Pan troglodytes)
Mammalia DEFB105A 35
  • 98.72 (n)
  • 96.15 (a)
DEFB105A 36
  • 96 (a)
(Rattus norvegicus)
Mammalia Defb12 35
  • 77.35 (n)
  • 67.95 (a)
Species with no ortholog for DEFB105B:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • chicken (Gallus gallus)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • fruit fly (Drosophila melanogaster)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • lizard (Anolis carolinensis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • oppossum (Monodelphis domestica)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • platypus (Ornithorhynchus anatinus)
  • rainbow trout (Oncorhynchus mykiss)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • tropical clawed frog (Silurana tropicalis)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)
  • zebrafish (Danio rerio)

Evolution for DEFB105B Gene

Gene Tree for DEFB105B (if available)
Gene Tree for DEFB105B (if available)

Paralogs for DEFB105B Gene

Paralogs for DEFB105B Gene

(1) SIMAP similar genes for DEFB105B Gene using alignment to 2 proteins:

genes like me logo Genes that share paralogs with DEFB105B: view

Variants for DEFB105B Gene

Sequence variations from dbSNP and Humsavar for DEFB105B Gene

SNP ID Clin Chr 08 pos Sequence Context AA Info Type
rs2680557 -- 7,491,085(+) ATCCA(C/T)TGGGG downstream-variant-500B
rs2737593 -- 7,489,022(+) CTGCT(A/G)GCTAC intron-variant
rs2737595 -- 7,490,064(+) CTAGT(A/G)TCTGC intron-variant, downstream-variant-500B
rs2737994 -- 7,488,575(-) ACCTC(A/G)TGCAT intron-variant
rs2977418 -- 7,490,469(+) AGAAT(A/G)TGCAT intron-variant

Structural Variations from Database of Genomic Variants (DGV) for DEFB105B Gene

Variant ID Type Subtype PubMed ID
nsv428194 CNV Gain+Loss 18775914
dgv2191e1 CNV Complex 17122850
nsv515968 CNV Gain+Loss 19592680
nsv821656 CNV Gain 15273396
dgv2192e1 CNV Complex 17122850
esv2736558 CNV Deletion 23290073
nsv510977 CNV Complex 20534489
dgv2193e1 CNV Complex 17122850
dgv7659n71 CNV Gain 21882294
esv21583 CNV Gain+Loss 19812545
nsv890078 CNV Gain 21882294
esv33606 CNV Gain+Loss 17666407
dgv7661n71 CNV Gain 21882294
dgv7662n71 CNV Gain 21882294
nsv8281 CNV Gain+Loss 18304495
dgv7663n71 CNV Loss 21882294
dgv7664n71 CNV Loss 21882294
nsv471650 CNV Gain+Loss 15918152
dgv2195e1 CNV Complex 17122850
dgv7666n71 CNV Gain 21882294
dgv7667n71 CNV Gain+Loss 21882294
dgv7668n71 CNV Gain 21882294
dgv7669n71 CNV Gain 21882294
dgv7670n71 CNV Loss 21882294
dgv7672n71 CNV Gain+Loss 21882294
dgv7673n71 CNV Gain+Loss 21882294
esv996398 CNV Gain 20482838
nsv890110 CNV Gain 21882294
esv2752265 CNV Gain 17911159
nsv824519 CNV Loss 20364138
nsv824521 CNV Gain 20364138
nsv515100 CNV Complex 21397061
dgv31n14 CNV Loss 18776910
dgv7675n71 CNV Loss 21882294
nsv890153 CNV Loss 21882294
nsv442397 CNV CNV 18776908
nsv469521 CNV Complex 16826518
dgv7677n71 CNV Gain+Loss 21882294
dgv7678n71 CNV Gain 21882294
dgv7679n71 CNV Gain 21882294
dgv25n31 CNV Duplication 19718026
dgv7680n71 CNV Loss 21882294
dgv7681n71 CNV Gain 21882294
esv2752266 CNV Loss 17911159
nsv890230 CNV Gain+Loss 21882294
nsv890228 CNV Gain 21882294
nsv508496 CNV Loss 20534489
dgv7682n71 CNV Gain 21882294
esv25631 CNV Gain+Loss 19812545
nsv890256 CNV Gain+Loss 21882294
dgv7683n71 CNV Gain+Loss 21882294
dgv7684n71 CNV Loss 21882294
dgv7685n71 CNV Gain 21882294
nsv890270 CNV Loss 21882294
dgv7686n71 CNV Gain 21882294
dgv7687n71 CNV Gain 21882294
esv992071 CNV Gain 20482838
dgv7688n71 CNV Gain 21882294
dgv7689n71 CNV Gain 21882294
nsv433398 CNV Gain 18776910
dgv7690n71 CNV Gain+Loss 21882294
dgv7691n71 CNV Gain 21882294
dgv26n31 CNV Duplication 19718026
dgv1170n67 CNV Loss 20364138
nsv824524 CNV Gain+Loss 20364138
dgv7692n71 CNV Gain 21882294
dgv7693n71 CNV Gain+Loss 21882294

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot , Variation tolerance and Relevant External Links for DEFB105B Gene

Disorders for DEFB105B Gene

Relevant External Links for DEFB105B

Atlas of Genetics and Cytogenetics in Oncology and Haematology:

No disorders were found for DEFB105B Gene.

No data available for MalaCards , UniProtKB/Swiss-Prot and Genatlas for DEFB105B Gene

Publications for DEFB105B Gene

  1. Duplication and selection in the evolution of primate beta-defensin genes. (PMID: 12734011) Semple C.A.M. … Dorin J.R. (Genome Biol. 2003) 3 4 67
  2. Human defensin 5 disulfide array mutants: disulfide bond deletion attenuates antibacterial activity against Staphylococcus aureus. (PMID: 21861459) Wanniarachchi Y.A. … Nolan E.M. (Biochemistry 2011) 3
  3. Cross-species analysis of the mammalian beta-defensin gene family: presence of syntenic gene clusters and preferential expression in the male reproductive tract. (PMID: 16033865) Patil A.A. … Zhang G. (Physiol. Genomics 2005) 3
  4. Polymorphic segmental duplications at 8p23.1 challenge the determination of individual defensin gene repertoires and the assembly of a contiguous human reference sequence. (PMID: 15588320) Taudien S. … Platzer M. (BMC Genomics 2004) 3
  5. Evidence for duplication of the human defensin gene DEFB4 in chromosomal region 8p22-23 and implications for the analysis of SNP allele distribution. (PMID: 15727258) Boniotto M. … Gallagher G. (Genet. Test. 2004) 3

Products for DEFB105B Gene

Sources for DEFB105B Gene