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Available structures
PDB Human UniProt search: PDBe RCSB
Aliases KLK2, KLK2A2, hGK-1, hK2, kallikrein related peptidase 2
External IDs HomoloGene: 124422 GeneCards: 3817
RNA expression pattern
PBB GE KLK2 209854 s at tn.png

PBB GE KLK2 209855 s at tn.png

PBB GE KLK2 210339 s at tn.png
More reference expression data
Species Human Mouse
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC) Chr 19: 50.86 – 50.88 Mb n/a
PubMed search [1] n/a
View/Edit Human

Kallikrein-2 is a protein that in humans is encoded by the KLK2 gene, and is particularly associated with prostatic tissue.[2][3][4][5]


  1. ^ "Human PubMed Reference:". 
  2. ^ Riegman PH, Vlietstra RJ, Klaassen P, van der Korput JA, Geurts van Kessel A, Romijn JC, Trapman J (May 1989). "The prostate-specific antigen gene and the human glandular kallikrein-1 gene are tandemly located on chromosome 19". FEBS Lett. 247 (1): 123–126. doi:10.1016/0014-5793(89)81253-0. PMID 2468530. 
  3. ^ Lundwall A, Band V, Blaber M, Clements JA, Courty Y, Diamandis EP, Fritz H, Lilja H, Malm J, Maltais LJ, Olsson AY, Petraki C, Scorilas A, Sotiropoulou G, Stenman UH, Stephan C, Talieri M, Yousef GM (Jun 2006). "A comprehensive nomenclature for serine proteases with homology to tissue kallikreins". Biol Chem. 387 (6): 637–641. doi:10.1515/BC.2006.082. PMID 16800724. 
  4. ^ Diamandis, Eleftherios P.; Deperthes, David; Lundwall, Åke (Jun 2006). "Proceedings of the 1st International Symposium on Kallikreins, Lausanne, Switzerland, September 1-3 , 2005". Biol Chem. 387 (6): 635–636. doi:10.1515/BC.2006.081. PMID 16800723. 
  5. ^ "Entrez Gene: KLK2 Kallikrein-related peptidase 2". 

Further reading[edit]

  • Riegman PH, Vlietstra RJ, van der Korput HA, et al. (1992). "Identification and androgen-regulated expression of two major human glandular kallikrein-1 (hGK-1) mRNA species". Mol. Cell. Endocrinol. 76 (1–3): 181–190. doi:10.1016/0303-7207(91)90272-T. PMID 1726490. 
  • Qin H, Kemp J, Yip MY, et al. (1992). "Localization of human glandular kallikrein-1 gene to chromosome 19q13.3-13.4 by in situ hybridization". Hum. Hered. 41 (4): 222–226. doi:10.1159/000154005. PMID 1783409. 
  • Schedlich LJ, Bennetts BH, Morris BJ (1988). "Primary structure of a human glandular kallikrein gene". DNA. 6 (5): 429–437. doi:10.1089/dna.1987.6.429. PMID 2824146. 
  • Frenette G, Deperthes D, Tremblay RR, et al. (1997). "Purification of enzymatically active kallikrein hK2 from human seminal plasma". Biochim. Biophys. Acta. 1334 (1): 109–15. doi:10.1016/s0304-4165(96)00080-3. PMID 9042371. 
  • Bourgeois L, Brillard-Bourdet M, Deperthes D, et al. (1997). "Serpin-derived peptide substrates for investigating the substrate specificity of human tissue kallikreins hK1 and hK2". J. Biol. Chem. 272 (47): 29590–29595. doi:10.1074/jbc.272.47.29590. PMID 9368023. 
  • Mikolajczyk SD, Millar LS, Kumar A, Saedi MS (1998). "Human glandular kallikrein, hK2, shows arginine-restricted specificity and forms complexes with plasma protease inhibitors". Prostate. 34 (1): 44–50. doi:10.1002/(SICI)1097-0045(19980101)34:1<44::AID-PROS6>3.0.CO;2-K. PMID 9428387. 
  • Yu DC, Sakamoto GT, Henderson DR (1999). "Identification of the transcriptional regulatory sequences of human kallikrein 2 and their use in the construction of calydon virus 764, an attenuated replication competent adenovirus for prostate cancer therapy". Cancer Res. 59 (7): 1498–504. PMID 10197620. 
  • Mikolajczyk SD, Millar LS, Kumar A, Saedi MS (1999). "Prostatic human kallikrein 2 inactivates and complexes with plasminogen activator inhibitor-1". Int. J. Cancer. 81 (3): 438–442. doi:10.1002/(SICI)1097-0215(19990505)81:3<438::AID-IJC18>3.0.CO;2-U. PMID 10209959. 
  • Lövgren J, Valtonen-André C, Marsal K, et al. (1999). "Measurement of prostate-specific antigen and human glandular kallikrein 2 in different body fluids". J. Androl. 20 (3): 348–55. PMID 10386814. 
  • Cargill M, Altshuler D, Ireland J, et al. (1999). "Characterization of single-nucleotide polymorphisms in coding regions of human genes". Nat. Genet. 22 (3): 231–238. doi:10.1038/10290. PMID 10391209. 
  • Lövgren J, Airas K, Lilja H (1999). "Enzymatic action of human glandular kallikrein 2 (hK2). Substrate specificity and regulation by Zn2+ and extracellular protease inhibitors". Eur. J. Biochem. 262 (3): 781–789. doi:10.1046/j.1432-1327.1999.00433.x. PMID 10411640. 
  • Mikolajczyk SD, Millar LS, Marker KM, et al. (1999). "Identification of a novel complex between human kallikrein 2 and protease inhibitor-6 in prostate cancer tissue". Cancer Res. 59 (16): 3927–30. PMID 10463585. 
  • Liu XF, Essand M, Vasmatzis G, et al. (1999). "Identification of three new alternate human kallikrein 2 transcripts: evidence of long transcript and alternative splicing". Biochem. Biophys. Res. Commun. 264 (3): 833–839. doi:10.1006/bbrc.1999.1595. PMID 10544017. 
  • Ren F, Zhang S, Mitchell SH, et al. (2000). "Tea polyphenols down-regulate the expression of the androgen receptor in LNCaP prostate cancer cells". Oncogene. 19 (15): 1924–1932. doi:10.1038/sj.onc.1203511. PMID 10773882. 
  • Harvey TJ, Hooper JD, Myers SA, et al. (2001). "Tissue-specific expression patterns and fine mapping of the human kallikrein (KLK) locus on proximal 19q13.4". J. Biol. Chem. 275 (48): 37397–37406. doi:10.1074/jbc.M004525200. PMID 10969073. 
  • Chen VC, Chao L, Chao J (2001). "A positively charged loop on the surface of kallistatin functions to enhance tissue kallikrein inhibition by acting as a secondary binding site for kallikrein". J. Biol. Chem. 275 (51): 40371–40377. doi:10.1074/jbc.M005691200. PMID 10991942. 
  • Gan L, Lee I, Smith R, et al. (2001). "Sequencing and expression analysis of the serine protease gene cluster located in chromosome 19q13 region". Gene. 257 (1): 119–130. doi:10.1016/S0378-1119(00)00382-6. PMID 11054574. 
  • Réhault S, Monget P, Mazerbourg S, et al. (2001). "Insulin-like growth factor binding proteins (IGFBPs) as potential physiological substrates for human kallikreins hK2 and hK3". Eur. J. Biochem. 268 (10): 2960–2968. doi:10.1046/j.1432-1327.2001.02185.x. PMID 11358513. 
  • Saedi MS, Zhu Z, Marker K, et al. (2002). "Human kallikrein 2 (hK2), but not prostate-specific antigen (PSA), rapidly complexes with protease inhibitor 6 (PI-6) released from prostate carcinoma cells". Int. J. Cancer. 94 (4): 558–563. doi:10.1002/ijc.1501. PMID 11745444. 

External links[edit]

  • The MEROPS online database for peptidases and their inhibitors: S01.161