2bdz
From Proteopedia
Mexicain from Jacaratia mexicana
Structural highlights
FunctionMEX1_JACME Cysteine protease.[REFERENCE:1] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedMexicain is a 23.7 kDa papain-like cysteine protease from the tropical plant Jacaratia mexicana. Extracted as a mix of proteases from the latex of the fruit, mexicain is isolated after cation-exchange chromatography as the most abundant product. The purified product inhibited with E-64 was crystallized by sitting-drop vapour diffusion in the presence of ethanolamine. Cryoprotected crystals diffracted X-rays from a home source to 1.98 A and belong to the monoclinic space group P2(1), with unit-cell parameters a = 57.36, b = 90.45, c = 80.39 A, beta = 92.64 degrees . The asymmetric unit contains four molecules of mexicain, with a corresponding crystal volume per protein weight (V(M)) of 2.24 A(3) Da(-1) and a solvent content of 45% by volume. A molecular-replacement model has been determined and refinement is in progress. Purification, crystallization and preliminary X-ray analysis of mexicain.,Oliver-Salvador MC, Gonzalez-Ramirez LA, Gavira JA, Soriano-Garcia M, Garcia-Ruiz JM Acta Crystallogr D Biol Crystallogr. 2004 Nov;60(Pt 11):2058-60. Epub 2004, Oct 20. PMID:015502326[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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