6qhb | pdb_00006qhb
Crystal Structure of Human Kallikrein 6 in complex with GSK578724A
Structural highlights
FunctionKLK6_HUMAN Serine protease which exhibits a preference for Arg over Lys in the substrate P1 position and for Ser or Pro in the P2 position. Shows activity against amyloid precursor protein, myelin basic protein, gelatin, casein and extracellular matrix proteins such as fibronectin, laminin, vitronectin and collagen. Degrades alpha-synuclein and prevents its polymerization, indicating that it may be involved in the pathogenesis of Parkinson disease and other synucleinopathies. May be involved in regulation of axon outgrowth following spinal cord injury. Tumor cells treated with a neutralizing KLK6 antibody migrate less than control cells, suggesting a role in invasion and metastasis.[1] [2] [3] [4] [5] [6] Publication Abstract from PubMedNetherton syndrome (NS) is a rare and debilitating severe autosomal recessive genetic skin disease with high mortality rates particularly in neonates. NS is caused by loss-of-function SPINK5 mutations leading to unregulated kallikrein 5 (KLK5) and kallikrein 7 (KLK7) activity. Furthermore, KLK5 inhibition has been proposed as a potential therapeutic treatment for NS. Identification of potent and selective KLK5 inhibitors would enable further exploration of the disease biology and could ultimately lead to a treatment for NS. This publication describes how fragmentation of known trypsin-like serine protease (TLSP) inhibitors resulted in the identification of a series of phenolic amidine-based KLK5 inhibitors 1. X-ray crystallography was used to find alternatives to the phenol interaction leading to identification of carbonyl analogues such as lactam 13 and benzimidazole 15. These reversible inhibitors, with selectivity over KLK1 (10-100 fold), provided novel starting points for the guided growth towards suitable tool molecules for the exploration of KLK5 biology. Kallikrein 5 inhibitors identified through structure based drug design in search for a treatment for Netherton Syndrome.,White GV, Edgar EV, Holmes DS, Lewell XQ, Liddle J, Polyakova O, Smith KJ, Thorpe JH, Walker AL, Wang Y, Young RJ, Hovnanian A Bioorg Med Chem Lett. 2019 Mar 15;29(6):821-825. doi: 10.1016/j.bmcl.2019.01.020., Epub 2019 Jan 22. PMID:30691925[7] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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