KLK9

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Identifiers
Aliases
External IDsGeneCards: [1]
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

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RefSeq (protein)

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Kallikrein-related peptidase 9 also known as KLK9 is an enzyme which in humans is encoded by the KLK9 gene.[1]

Function

KLK9 belongs to the kallikrein subgroup of serine proteases, which have diverse physiologic functions in many tissues.[2][3][4] KLK9 is primarily expressed in thymus, testis, spinal cord, cerebellum, trachea, mammary gland, prostate, brain, salivary gland, ovary, and skin.[1]

Clinical significance

KLK9 is under steroid hormone regulation in ovarian and breast cancer cell lines and is a potential prognostic marker for early-stage ovarian[5] and breast cancer patients.[6]

Its excretion in urine has been associated with cardiac hypertrophy and aorta wall thickness, as well as some renal alterations.[7]

References

  1. 1.0 1.1 Yousef GM, Diamandis EP (April 2000). "The expanded human kallikrein gene family: locus characterization and molecular cloning of a new member, KLK-L3 (KLK9)". Genomics. 65 (2): 184–94. doi:10.1006/geno.2000.6159. PMID 10783266.
  2. "Entrez Gene: KLK9".
  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 (June 2006). "A comprehensive nomenclature for serine proteases with homology to tissue kallikreins". Biological Chemistry. 387 (6): 637–41. doi:10.1515/BC.2006.082. PMID 16800724.
  4. Diamandis EP, Deperthes D, Lundwall Å (June 2006). "Proceedings of the 1st International Symposium on Kallikreins, Lausanne, Switzerland, September 1-3 , 2005". Biological Chemistry. 387 (6): 635–824. doi:10.1515/BC.2006.081. PMID 16800723.
  5. Yousef GM, Kyriakopoulou LG, Scorilas A, Fracchioli S, Ghiringhello B, Zarghooni M, Chang A, Diamandis M, Giardina G, Hartwick WJ, Richiardi G, Massobrio M, Diamandis EP, Katsaros D (November 2001). "Quantitative expression of the human kallikrein gene 9 (KLK9) in ovarian cancer: a new independent and favorable prognostic marker". Cancer Research. 61 (21): 7811–8. PMID 11691797.
  6. Yousef GM, Scorilas A, Nakamura T, Ellatif MA, Ponzone R, Biglia N, Maggiorotto F, Roagna R, Sismondi P, Diamandis EP (March 2003). "The prognostic value of the human kallikrein gene 9 (KLK9) in breast cancer". Breast Cancer Research and Treatment. 78 (2): 149–58. doi:10.1023/A:1022931403825. PMID 12725415.
  7. Blázquez-Medela AM, García-Sánchez O, Quirós Y, Blanco-Gozalo V, Prieto-García L, Sancho-Martínez SM, Romero M, Duarte JM, López-Hernández FJ, López-Novoa JM, Martínez-Salgado C (October 2015). "Increased Klk9 Urinary Excretion Is Associated to Hypertension-Induced Cardiovascular Damage and Renal Alterations". Medicine. 94 (41): e1617. doi:10.1097/MD.0000000000001617. PMC 4616806. PMID 26469898.

Further reading

  • Yousef GM, Kyriakopoulou LG, Scorilas A, Fracchioli S, Ghiringhello B, Zarghooni M, Chang A, Diamandis M, Giardina G, Hartwick WJ, Richiardi G, Massobrio M, Diamandis EP, Katsaros D (November 2001). "Quantitative expression of the human kallikrein gene 9 (KLK9) in ovarian cancer: a new independent and favorable prognostic marker". Cancer Research. 61 (21): 7811–8. PMID 11691797.
  • Yousef GM, Luo LY, Diamandis EP (1999). "Identification of novel human kallikrein-like genes on chromosome 19q13.3-q13.4". Anticancer Research. 19 (4B): 2843–52. PMID 10652563.
  • Gan L, Lee I, Smith R, Argonza-Barrett R, Lei H, McCuaig J, Moss P, Paeper B, Wang K (October 2000). "Sequencing and expression analysis of the serine protease gene cluster located in chromosome 19q13 region". Gene. 257 (1): 119–30. doi:10.1016/S0378-1119(00)00382-6. PMID 11054574.

External links

  • The MEROPS online database for peptidases and their inhibitors: S01.307