4cat
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(New page: 200px<br /><applet load="4cat" size="450" color="white" frame="true" align="right" spinBox="true" caption="4cat, resolution 3.0Å" /> '''THREE-DIMENSIONAL STR...)
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Revision as of 17:20, 20 November 2007
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THREE-DIMENSIONAL STRUCTURE OF CATALASE FROM PENICILLIUM VITALE AT 2.0 ANGSTROMS RESOLUTION
Overview
The three-dimensional structure analysis of crystalline fungal catalase, from Penicillium vitale has been extended to 2.0 A resolution. The, crystals belong to space group P3(1)21, with the unit cell parameters of a, = b = 144.4 A and c = 133.8 A. The asymmetric unit contains half a, tetrameric molecule of 222 symmetry. Each subunit is a single polypeptide, chain of approximately 670 amino acid residues and binds one heme group., The amino acid sequence has been tentatively determined by computer, graphics model building (using the FRODO system) and comparison with the, known sequence of beef liver catalase. The atomic model has been refined, by the Hendrickson & Konnert (1981) restrained least-squares program, against 68,000 reflections between 5 A and 2 A resolution. The final, R-factor is 0.31 after 24 refinement cycles. The secondary and tertiary, structure of the catalase has been analyzed.
About this Structure
4CAT is a Protein complex structure of sequences from [1] with HEM as ligand. Active as Catalase, with EC number 1.11.1.6 Full crystallographic information is available from OCA.
Reference
Three-dimensional structure of catalase from Penicillium vitale at 2.0 A resolution., Vainshtein BK, Melik-Adamyan WR, Barynin VV, Vagin AA, Grebenko AI, Borisov VV, Bartels KS, Fita I, Rossmann MG, J Mol Biol. 1986 Mar 5;188(1):49-61. PMID:3712443
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