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Aliases for KLK2 Gene

Aliases for KLK2 Gene

  • Kallikrein Related Peptidase 2 2 3 5
  • Kallikrein 2, Prostatic 2 3
  • Glandular Kallikrein-1 3 4
  • Tissue Kallikrein-2 3 4
  • HGK-1 3 4
  • Glandular Kallikrein 2 3
  • Kallikrein-2 3
  • EC 4
  • EC 3.4.21 58
  • KLK2A2 3
  • HK2 3

External Ids for KLK2 Gene

Previous GeneCards Identifiers for KLK2 Gene

  • GC19P052005
  • GC19P051737
  • GC19P056052
  • GC19P056068
  • GC19P051376
  • GC19P047711
  • GC19P051369

Summaries for KLK2 Gene

Entrez Gene Summary for KLK2 Gene

  • This gene encodes a member of the grandular kallikrein protein family. Kallikreins are a subgroup of serine proteases that are clustered on chromosome 19. Members of this family are involved in a diverse array of biological functions. The protein encoded by this gene is a highly active trypsin-like serine protease that selectively cleaves at arginine residues. This protein is primarily expressed in prostatic tissue and is responsible for cleaving pro-prostate-specific antigen into its enzymatically active form. This gene is highly expressed in prostate tumor cells and may be a prognostic maker for prostate cancer risk. Alternate splicing results in both coding and non-coding transcript variants. [provided by RefSeq, Jan 2012]

GeneCards Summary for KLK2 Gene

KLK2 (Kallikrein Related Peptidase 2) is a Protein Coding gene. Diseases associated with KLK2 include Prostate Cancer and Male Reproductive Organ Cancer. Among its related pathways are Matrix Metalloproteinases and Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3. GO annotations related to this gene include serine-type endopeptidase activity. An important paralog of this gene is KLK3.

UniProtKB/Swiss-Prot for KLK2 Gene

  • Glandular kallikreins cleave Met-Lys and Arg-Ser bonds in kininogen to release Lys-bradykinin.

Gene Wiki entry for KLK2 Gene

Additional gene information for KLK2 Gene

No data available for CIViC summary , Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for KLK2 Gene

Genomics for KLK2 Gene

Regulatory Elements for KLK2 Gene

Enhancers for KLK2 Gene
GeneHancer Identifier Enhancer Score Enhancer Sources Gene-Enhancer Score TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor Binding Sites within enhancer Gene Targets for Enhancer
GH19H050835 1.9 FANTOM5 Ensembl ENCODE dbSUPER 11.3 -25.3 -25322 1.7 HDGF PKNOX1 ATF1 ARNT SIN3A FEZF1 GLI4 ZNF121 GLIS2 ATF7 ZNF175 ENSG00000268375 GPR32 LOC100133225 SIGLEC21P LINC01872 ENSG00000268595 ENSG00000269021 ENSG00000268889 NUP62
GH19H050896 1.3 Ensembl ENCODE 11.6 +35.5 35533 1.8 HDGF PKNOX1 ZNF766 ZNF143 FOS SP3 JUNB REST ZNF592 SMARCA4 ZNF175 ZNF577 NUP62 KLK2 LINC01869 KLK15 KLK1 KLK11 POLD1 CTU1
GH19H050838 0.7 dbSUPER 17.1 -22.7 -22687 1.6 CTCF MAZ L3MBTL2 TRIM22 RAD21 ZNF629 NBN CREB1 ZNF143 SMC3 KLK2 LINC01869 C19orf48 SNORD88C SNORD88A SNORD88B IL4I1 KLK15 ASPDH KLK3
GH19H050346 1.2 Ensembl ENCODE 9.6 -513.5 -513539 3.9 ELF3 PKNOX1 FOXA2 ARID4B BMI1 DMAP1 BATF RARA ZNF143 ATF7 NAPSB KCNC3 NAPSA POLD1 JOSD2 ASPDH EMC10 FAM71E1 KLK2 ENSG00000269392
- Elite enhancer and/or Elite enhancer-gene association Download GeneHancer data dump

Enhancers around KLK2 on UCSC Golden Path with GeneCards custom track

Genomic Locations for KLK2 Gene

Genomic Locations for KLK2 Gene
19,000 bases
Plus strand

Genomic View for KLK2 Gene

Genes around KLK2 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
KLK2 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for KLK2 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for KLK2 Gene

Proteins for KLK2 Gene

  • Protein details for KLK2 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Protein Accession:
    Secondary Accessions:
    • B4DU93
    • B4DUB0
    • F5H8L3
    • Q15946
    • Q9UJZ9

    Protein attributes for KLK2 Gene

    261 amino acids
    Molecular mass:
    28671 Da
    Quaternary structure:
    No Data Available
    • Sequence=AAD13817.1; Type=Miscellaneous discrepancy; Evidence={ECO:0000305};

    Three dimensional structures from OCA and Proteopedia for KLK2 Gene

    Alternative splice isoforms for KLK2 Gene


neXtProt entry for KLK2 Gene

Selected DME Specific Peptides for KLK2 Gene


Post-translational modifications for KLK2 Gene

  • Glycosylation at posLast=102102
  • Modification sites at PhosphoSitePlus

Domains & Families for KLK2 Gene

Gene Families for KLK2 Gene

Human Protein Atlas (HPA):
  • Cancer-related genes
  • Enzymes
  • Plasma proteins
  • Predicted intracellular proteins
  • Predicted secreted proteins

Suggested Antigen Peptide Sequences for KLK2 Gene

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the peptidase S1 family. Kallikrein subfamily.
  • Belongs to the peptidase S1 family. Kallikrein subfamily.
genes like me logo Genes that share domains with KLK2: view

Function for KLK2 Gene

Molecular function for KLK2 Gene

GENATLAS Biochemistry:
kallikrein 2,glandular,expressed in the prostate,complexing with protease inhibitor 6 in prostate cancer tissue
UniProtKB/Swiss-Prot CatalyticActivity:
Preferential cleavage of Arg- -Xaa bonds in small molecule substrates. Highly selective action to release kallidin (lysyl-bradykinin) from kininogen involves hydrolysis of Met- -Xaa or Leu- -Xaa.
UniProtKB/Swiss-Prot Function:
Glandular kallikreins cleave Met-Lys and Arg-Ser bonds in kininogen to release Lys-bradykinin.

Enzyme Numbers (IUBMB) for KLK2 Gene

Phenotypes From GWAS Catalog for KLK2 Gene

Gene Ontology (GO) - Molecular Function for KLK2 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0004252 serine-type endopeptidase activity TAS --
GO:0008233 peptidase activity IEA --
GO:0008236 serine-type peptidase activity IEA --
GO:0016787 hydrolase activity IEA --
genes like me logo Genes that share ontologies with KLK2: view
genes like me logo Genes that share phenotypes with KLK2: view

Clone Products

No data available for Human Phenotype Ontology , Animal Models , Transcription Factor Targets and HOMER Transcription for KLK2 Gene

Localization for KLK2 Gene

Subcellular locations from

Extracellular space Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi Apparatus Nucleus Mitochondrion 0 1 2 3 4 5 Confidence
COMPARTMENTS Subcellular localization image for KLK2 gene
Compartment Confidence
extracellular 5
nucleus 1
cytosol 1
lysosome 1

Gene Ontology (GO) - Cellular Components for KLK2 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005576 extracellular region TAS --
GO:0070062 extracellular exosome IDA 23533145
genes like me logo Genes that share ontologies with KLK2: view

No data available for Subcellular locations from UniProtKB/Swiss-Prot and Subcellular locations from the Human Protein Atlas (HPA) for KLK2 Gene

Pathways & Interactions for KLK2 Gene

genes like me logo Genes that share pathways with KLK2: view

SIGNOR curated interactions for KLK2 Gene


Gene Ontology (GO) - Biological Process for KLK2 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0006508 proteolysis IEA --
GO:0022617 extracellular matrix disassembly TAS --
genes like me logo Genes that share ontologies with KLK2: view

Drugs & Compounds for KLK2 Gene

(4) Drugs for KLK2 Gene - From: Novoseek

Name Status Disease Links Group Role Mechanism of Action Clinical Trials

(2) Additional Compounds for KLK2 Gene - From: Novoseek

Name Synonyms Role CAS Number PubChem IDs PubMed IDs
genes like me logo Genes that share compounds with KLK2: view

Transcripts for KLK2 Gene

Unigene Clusters for KLK2 Gene

Kallikrein-related peptidase 2:
Representative Sequences:

Clone Products

Alternative Splicing Database (ASD) splice patterns (SP) for KLK2 Gene

ExUns: 1a · 1b ^ 2 ^ 3a · 3b · 3c ^ 4a · 4b · 4c ^ 5a · 5b · 5c ^ 6a · 6b ^ 7a · 7b · 7c ^ 8a · 8b · 8c · 8d · 8e ^ 9 ^ 10a · 10b ^ 11a ·
SP1: - - - - - - - -
SP2: - - - - - - -
SP3: - - - - - - - -
SP4: - - - - - -
SP5: - - - -
SP6: - - - - -
SP7: - - - - - - - -
SP8: - - - - - - - - -
SP9: - - -
SP10: - - - - - -
SP11: - - - - -
SP12: - - - - - - - - - -
SP13: - - - -
SP16: -

ExUns: 11b · 11c · 11d

Relevant External Links for KLK2 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for KLK2 Gene

mRNA expression in normal human tissues from GTEx, Illumina, BioGPS, and CGAP SAGE for KLK2 Gene

mRNA differential expression in normal tissues according to GTEx for KLK2 Gene

This gene is overexpressed in Prostate (x52.3).

Protein differential expression in normal tissues from HIPED for KLK2 Gene

This gene is overexpressed in Prostate (69.0).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, MaxQB, and MOPED for KLK2 Gene

Protein tissue co-expression partners for KLK2 Gene

NURSA nuclear receptor signaling pathways regulating expression of KLK2 Gene:


SOURCE GeneReport for Unigene cluster for KLK2 Gene:

genes like me logo Genes that share expression patterns with KLK2: view

No data available for mRNA expression in embryonic tissues and stem cells from LifeMap Discovery , mRNA Expression by UniProt/SwissProt , Evidence on tissue expression from TISSUES and Phenotype-based relationships between genes and organs from Gene ORGANizer for KLK2 Gene

Orthologs for KLK2 Gene

This gene was present in the common ancestor of animals.

Orthologs for KLK2 Gene

Organism Taxonomy Gene Similarity Type Details
(Pan troglodytes)
Mammalia KLK2 33 34
  • 99.36 (n)
(Bos Taurus)
Mammalia KLK1 34
  • 66 (a)
(Canis familiaris)
Mammalia KLK2 34
  • 59 (a)
(Mus musculus)
Mammalia Klk1b3 34
  • 59 (a)
(Anolis carolinensis)
Reptilia -- 34
  • 37 (a)
fruit fly
(Drosophila melanogaster)
Insecta CG17239 35
  • 36 (a)
Species where no ortholog for KLK2 was found in the sources mined by GeneCards:
  • 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)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • 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)
  • rat (Rattus norvegicus)
  • 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 KLK2 Gene

Gene Tree for KLK2 (if available)
Gene Tree for KLK2 (if available)

Paralogs for KLK2 Gene

Variants for KLK2 Gene

Sequence variations from dbSNP and Humsavar for KLK2 Gene

SNP ID Clin Chr 19 pos Sequence Context AA Info Type
rs1000127141 -- 50,879,451(+) GGTGG(A/G)GGCCT nc-transcript-variant, utr-variant-3-prime
rs1000255023 -- 50,877,531(+) AGCAG(C/T)ACCTG intron-variant
rs1000465860 -- 50,875,739(+) GGTTG(C/T)AGTGA intron-variant
rs1000734104 -- 50,880,853(+) GATAA(A/T)TGGAA downstream-variant-500B
rs1000905369 -- 50,874,101(+) CTTTG(C/T)CCCAG intron-variant

Structural Variations from Database of Genomic Variants (DGV) for KLK2 Gene

Variant ID Type Subtype PubMed ID
nsv2531 CNV deletion 18451855
nsv1140251 OTHER inversion 24896259
esv3644659 CNV gain 21293372
esv2763208 CNV gain 21179565
esv1010987 CNV loss 20482838
dgv1059e212 CNV loss 25503493

Variation tolerance for KLK2 Gene

Residual Variation Intolerance Score: 72% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 3.41; 54.43% of all genes are more intolerant (likely to be disease-causing)

Relevant External Links for KLK2 Gene

SNPedia medical, phenotypic, and genealogical associations of SNPs for

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for KLK2 Gene

Disorders for KLK2 Gene

MalaCards: The human disease database

(3) MalaCards diseases for KLK2 Gene - From: DISEASES, Novoseek, and GeneCards

Disorder Aliases PubMed IDs
prostate cancer
  • prostate cancer, hereditary, 5
male reproductive organ cancer
  • male genital cancer
reproductive organ cancer
  • cancer of reproductive system
- elite association - COSMIC cancer census association via MalaCards
Search KLK2 in MalaCards View complete list of genes associated with diseases

Relevant External Links for KLK2

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
Atlas of Genetics and Cytogenetics in Oncology and Haematology:
genes like me logo Genes that share disorders with KLK2: view

No data available for UniProtKB/Swiss-Prot and Genatlas for KLK2 Gene

Publications for KLK2 Gene

  1. Blood biomarker levels to aid discovery of cancer-related single-nucleotide polymorphisms: kallikreins and prostate cancer. (PMID: 20424135) Klein RJ … Lilja H (Cancer prevention research (Philadelphia, Pa.) 2010) 3 22 45 60
  2. Candidate gene approach evaluates association between innate immunity genes and breast cancer risk in Korean women. (PMID: 19372141) Lee JY … Kang D (Carcinogenesis 2009) 3 22 45 60
  3. Tagging SNPs in the kallikrein genes 3 and 2 on 19q13 and their associations with prostate cancer in men of European origin. (PMID: 17593395) Pal P … Deka R (Human genetics 2007) 3 22 45 60
  4. Variants of the hK2 protein gene (KLK2) are associated with serum hK2 levels and predict the presence of prostate cancer at biopsy. (PMID: 17085659) Nam RK … Narod SA (Clinical cancer research : an official journal of the American Association for Cancer Research 2006) 3 22 45 60
  5. Single nucleotide polymorphism of the human kallikrein-2 gene highly correlates with serum human kallikrein-2 levels and in combination enhances prostate cancer detection. (PMID: 12805332) Nam RK … Narod SA (Journal of clinical oncology : official journal of the American Society of Clinical Oncology 2003) 3 22 45 60

Products for KLK2 Gene

Sources for KLK2 Gene

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