1qzu
From Proteopedia
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==Overview== | ==Overview== | ||
| - | Phosphopantothenoylcysteine (PPC) decarboxylase is an essential enzyme in | + | Phosphopantothenoylcysteine (PPC) decarboxylase is an essential enzyme in the biosynthesis of coenzyme A and catalyzes the decarboxylation of PPC to phosphopantetheine. Human PPC decarboxylase has been expressed in Escherichia coli, purified and crystallized. The Laue class of the diffraction data appears to be 3m, suggesting space group R32 with two monomers per asymmetric unit. However, the crystals belong to the space group R3 and the asymmetric unit contains four monomers. The structure has been solved using molecular replacement and refined to a current R factor of 29%. The crystal packing can be considered as two interlaced lattices, each consistent with space group R32 and with the corresponding twofold axes parallel to each other but separated along the threefold axis. Thus, the true space group is R3 with four monomers per asymmetric unit. |
==About this Structure== | ==About this Structure== | ||
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[[Category: Phosphopantothenoylcysteine decarboxylase]] | [[Category: Phosphopantothenoylcysteine decarboxylase]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| - | [[Category: Ealick, S | + | [[Category: Ealick, S E.]] |
[[Category: Manoj, N.]] | [[Category: Manoj, N.]] | ||
[[Category: FMN]] | [[Category: FMN]] | ||
[[Category: alpha-beta sandwich]] | [[Category: alpha-beta sandwich]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:45:29 2008'' |
Revision as of 12:45, 21 February 2008
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crystal structure of human phosphopantothenoylcysteine decarboxylase
Overview
Phosphopantothenoylcysteine (PPC) decarboxylase is an essential enzyme in the biosynthesis of coenzyme A and catalyzes the decarboxylation of PPC to phosphopantetheine. Human PPC decarboxylase has been expressed in Escherichia coli, purified and crystallized. The Laue class of the diffraction data appears to be 3m, suggesting space group R32 with two monomers per asymmetric unit. However, the crystals belong to the space group R3 and the asymmetric unit contains four monomers. The structure has been solved using molecular replacement and refined to a current R factor of 29%. The crystal packing can be considered as two interlaced lattices, each consistent with space group R32 and with the corresponding twofold axes parallel to each other but separated along the threefold axis. Thus, the true space group is R3 with four monomers per asymmetric unit.
About this Structure
1QZU is a Single protein structure of sequence from Homo sapiens with as ligand. Active as Phosphopantothenoylcysteine decarboxylase, with EC number 4.1.1.36 Full crystallographic information is available from OCA.
Reference
Unusual space-group pseudosymmetry in crystals of human phosphopantothenoylcysteine decarboxylase., Manoj N, Ealick SE, Acta Crystallogr D Biol Crystallogr. 2003 Oct;59(Pt 10):1762-6. Epub 2003, Sep 19. PMID:14501115
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