3k9m

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Template:STRUCTURE 3k9m

Contents

Cathepsin B in complex with stefin A

Template:ABSTRACT PUBMED 20860624

Disease

[CYTA_HUMAN] Defects in CSTA are the cause of ichthyosis exfoliative autosomal recessive ichthyosis bullosa of Siemens-like (AREI) [MIM:607936]. A form of congenital exfoliative ichthyosis, sharing some features with ichthyosis bullosa of Siemens and annular epidermolytic ichthyosis. AREI presents shortly after birth as dry, scaly skin over most of the body with coarse peeling of non-erythematous skin on the palms and soles, which is exacerbated by excessive moisture and minor trauma. Electron microscopy analysis of skin biopsies, reveals mostly normal-appearing upper layers of the epidermis, but prominent intercellular edema of the basal and suprabasal cell layers with aggregates of tonofilaments in the basal keratinocytes.[1]

Function

[CATB_HUMAN] Thiol protease which is believed to participate in intracellular degradation and turnover of proteins. Has also been implicated in tumor invasion and metastasis. [CYTA_HUMAN] This is an intracellular thiol proteinase inhibitor. Has an important role in desmosome-mediated cell-cell adhesion in the lower levels of the epidermis.[2]

About this Structure

3k9m is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

See Also

Reference

  • Renko M, Pozgan U, Majera D, Turk D. Stefin A displaces the occluding loop of cathepsin B only by as much as required to bind to the active site cleft. FEBS J. 2010 Oct;277(20):4338-45. doi: 10.1111/j.1742-4658.2010.07824.x., Epub 2010 Sep 22. PMID:20860624 doi:10.1111/j.1742-4658.2010.07824.x
  1. ↑ Blaydon DC, Nitoiu D, Eckl KM, Cabral RM, Bland P, Hausser I, van Heel DA, Rajpopat S, Fischer J, Oji V, Zvulunov A, Traupe H, Hennies HC, Kelsell DP. Mutations in CSTA, encoding Cystatin A, underlie exfoliative ichthyosis and reveal a role for this protease inhibitor in cell-cell adhesion. Am J Hum Genet. 2011 Oct 7;89(4):564-71. doi: 10.1016/j.ajhg.2011.09.001. Epub, 2011 Sep 22. PMID:21944047 doi:10.1016/j.ajhg.2011.09.001
  2. ↑ Blaydon DC, Nitoiu D, Eckl KM, Cabral RM, Bland P, Hausser I, van Heel DA, Rajpopat S, Fischer J, Oji V, Zvulunov A, Traupe H, Hennies HC, Kelsell DP. Mutations in CSTA, encoding Cystatin A, underlie exfoliative ichthyosis and reveal a role for this protease inhibitor in cell-cell adhesion. Am J Hum Genet. 2011 Oct 7;89(4):564-71. doi: 10.1016/j.ajhg.2011.09.001. Epub, 2011 Sep 22. PMID:21944047 doi:10.1016/j.ajhg.2011.09.001

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