2htb
From Proteopedia
(New page: 200px<br /><applet load="2htb" size="350" color="white" frame="true" align="right" spinBox="true" caption="2htb, resolution 2.50Å" /> '''Crystal Structure of...) |
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==Overview== | ==Overview== | ||
| - | Salmonella typhimurium YeaD (stYeaD), annotated as a putative aldose | + | Salmonella typhimurium YeaD (stYeaD), annotated as a putative aldose 1-epimerase, has a very low sequence identity to other well characterized mutarotases. Sequence analysis suggested that the catalytic residues and a few of the substrate-binding residues of galactose mutarotases (GalMs) are conserved in stYeaD. Determination of the crystal structure of stYeaD in an orthorhombic form at 1.9 A resolution and in a monoclinic form at 2.5 A resolution revealed this protein to adopt the beta-sandwich fold similar to GalMs. Structural comparison of stYeaD with GalMs has permitted the identification of residues involved in catalysis and substrate binding. In spite of the similar fold and conservation of catalytic residues, minor but significant differences were observed in the substrate-binding pocket. These analyses pointed out the possible role of Arg74 and Arg99, found only in YeaD-like proteins, in ligand anchoring and suggested that the specificity of stYeaD may be distinct from those of GalMs. |
==About this Structure== | ==About this Structure== | ||
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[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Chittori, S.]] | [[Category: Chittori, S.]] | ||
| - | [[Category: Murthy, M | + | [[Category: Murthy, M R.N.]] |
| - | [[Category: Savithri, H | + | [[Category: Savithri, H S.]] |
| - | [[Category: Simanshu, D | + | [[Category: Simanshu, D K.]] |
[[Category: aldose 1-epimerase]] | [[Category: aldose 1-epimerase]] | ||
[[Category: carbohydrate]] | [[Category: carbohydrate]] | ||
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[[Category: yead]] | [[Category: yead]] | ||
| - | ''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 17:45:29 2008'' |
Revision as of 15:45, 21 February 2008
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Crystal Structure of a putative mutarotase (YeaD) from Salmonella typhimurium in monoclinic form
Overview
Salmonella typhimurium YeaD (stYeaD), annotated as a putative aldose 1-epimerase, has a very low sequence identity to other well characterized mutarotases. Sequence analysis suggested that the catalytic residues and a few of the substrate-binding residues of galactose mutarotases (GalMs) are conserved in stYeaD. Determination of the crystal structure of stYeaD in an orthorhombic form at 1.9 A resolution and in a monoclinic form at 2.5 A resolution revealed this protein to adopt the beta-sandwich fold similar to GalMs. Structural comparison of stYeaD with GalMs has permitted the identification of residues involved in catalysis and substrate binding. In spite of the similar fold and conservation of catalytic residues, minor but significant differences were observed in the substrate-binding pocket. These analyses pointed out the possible role of Arg74 and Arg99, found only in YeaD-like proteins, in ligand anchoring and suggested that the specificity of stYeaD may be distinct from those of GalMs.
About this Structure
2HTB is a Single protein structure of sequence from Salmonella typhimurium. Full crystallographic information is available from OCA.
Reference
Structure of the putative mutarotase YeaD from Salmonella typhimurium: structural comparison with galactose mutarotases., Chittori S, Simanshu DK, Savithri HS, Murthy MR, Acta Crystallogr D Biol Crystallogr. 2007 Feb;63(Pt 2):197-205. Epub 2007, Jan 16. PMID:17242513
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