1zjk

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Template:STRUCTURE 1zjk

Contents

Crystal structure of the zymogen catalytic region of human MASP-2

Template:ABSTRACT PUBMED 16040602

Disease

[MASP2_HUMAN] Defects in MASP2 are the cause of MASP2 deficiency (MASPD) [MIM:613791]. MASPD is a disorder that results in autoimmune manifestations, recurrent severe infections, and chronic inflammatory disease.[1][2]

Function

[MASP2_HUMAN] Serum protease that plays an important role in the activation of the complement system via mannose-binding lectin. After activation by auto-catalytic cleavage it cleaves C2 and C4, leading to their activation and to the formation of C3 convertase.[3]

About this Structure

1zjk is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

  • Gal P, Harmat V, Kocsis A, Bian T, Barna L, Ambrus G, Vegh B, Balczer J, Sim RB, Naray-Szabo G, Zavodszky P. A true autoactivating enzyme. Structural insight into mannose-binding lectin-associated serine protease-2 activations. J Biol Chem. 2005 Sep 30;280(39):33435-44. Epub 2005 Jul 21. PMID:16040602 doi:10.1074/jbc.M506051200
  • Harmat V, Gal P, Kardos J, Szilagyi K, Ambrus G, Vegh B, Naray-Szabo G, Zavodszky P. The structure of MBL-associated serine protease-2 reveals that identical substrate specificities of C1s and MASP-2 are realized through different sets of enzyme-substrate interactions. J Mol Biol. 2004 Oct 1;342(5):1533-46. PMID:15364579 doi:10.1016/j.jmb.2004.07.014
  1. ↑ Stengaard-Pedersen K, Thiel S, Gadjeva M, Moller-Kristensen M, Sorensen R, Jensen LT, Sjoholm AG, Fugger L, Jensenius JC. Inherited deficiency of mannan-binding lectin-associated serine protease 2. N Engl J Med. 2003 Aug 7;349(6):554-60. PMID:12904520 doi:http://dx.doi.org/10.1056/NEJMoa022836
  2. ↑ Thiel S, Steffensen R, Christensen IJ, Ip WK, Lau YL, Reason IJ, Eiberg H, Gadjeva M, Ruseva M, Jensenius JC. Deficiency of mannan-binding lectin associated serine protease-2 due to missense polymorphisms. Genes Immun. 2007 Mar;8(2):154-63. Epub 2007 Jan 25. PMID:17252003 doi:10.1038/sj.gene.6364373
  3. ↑ Matsushita M, Thiel S, Jensenius JC, Terai I, Fujita T. Proteolytic activities of two types of mannose-binding lectin-associated serine protease. J Immunol. 2000 Sep 1;165(5):2637-42. PMID:10946292

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