4k1e

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Template:STRUCTURE 4k1e

Contents

Atomic resolution crystal structures of Kallikrein-Related Peptidase 4 complexed with a modified SFTI inhibitor FCQR

Disease

[KLK4_HUMAN] Defects in KLK4 are the cause of amelogenesis imperfecta hypomaturation type 2A1 (AI2A1) [MIM:204700]. AI2A1 is an autosomal recessive defect of enamel formation. The disorder involves both primary and secondary dentitions. The teeth have a shiny agar jelly appearance and the enamel is softer than normal. Brown pigment is present in middle layers of enamel.[1]

Function

[KLK4_HUMAN] Involved in enamel formation.[2] [SFTI1_HELAN] Inhibits trypsin, cathepsin G, elastase, chymotrypsin and thrombin. Does not inhibit factor Xa.[3]

About this Structure

4k1e is a 2 chain structure. Full crystallographic information is available from OCA.

Reference

  1. Hart PS, Hart TC, Michalec MD, Ryu OH, Simmons D, Hong S, Wright JT. Mutation in kallikrein 4 causes autosomal recessive hypomaturation amelogenesis imperfecta. J Med Genet. 2004 Jul;41(7):545-9. PMID:15235027
  2. Hart PS, Hart TC, Michalec MD, Ryu OH, Simmons D, Hong S, Wright JT. Mutation in kallikrein 4 causes autosomal recessive hypomaturation amelogenesis imperfecta. J Med Genet. 2004 Jul;41(7):545-9. PMID:15235027
  3. Luckett S, Garcia RS, Barker JJ, Konarev AV, Shewry PR, Clarke AR, Brady RL. High-resolution structure of a potent, cyclic proteinase inhibitor from sunflower seeds. J Mol Biol. 1999 Jul 9;290(2):525-33. PMID:10390350 doi:10.1006/jmbi.1999.2891

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