1h7q

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==Overview==
==Overview==
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The vast majority of glycosidic-bond synthesis in nature is performed by, glycosyltransferases, which use activated glycosides as the sugar donor., Typically, the activated leaving group is a nucleoside phosphate, lipid, phosphate or phosphate. The nucleotide-sugar-dependent, glycosyltransferases fall into over 50 sequence-based families, with the, largest and most widespread family of inverting transferases named family, GT-2. Here, we present the three-dimensional crystal structure of SpsA, the first and currently the only structural representative from family, GT-2, in complex with both Mn-dTDP and Mg-dTDP at a resolution of 2 A., These structures reveal how SpsA and related enzymes may display, nucleotide plasticity and permit a comparison of the catalytic centre of, this enzyme with those from related sequence families whose, three-dimensional structures have recently been determined. Family GT-2, enzymes, together with enzymes from families 7, 13 and 43, appear to form, a clan of related structures with identical catalytic apparatus and, reaction mechanism.
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The vast majority of glycosidic-bond synthesis in nature is performed by glycosyltransferases, which use activated glycosides as the sugar donor. Typically, the activated leaving group is a nucleoside phosphate, lipid phosphate or phosphate. The nucleotide-sugar-dependent glycosyltransferases fall into over 50 sequence-based families, with the largest and most widespread family of inverting transferases named family GT-2. Here, we present the three-dimensional crystal structure of SpsA, the first and currently the only structural representative from family GT-2, in complex with both Mn-dTDP and Mg-dTDP at a resolution of 2 A. These structures reveal how SpsA and related enzymes may display nucleotide plasticity and permit a comparison of the catalytic centre of this enzyme with those from related sequence families whose three-dimensional structures have recently been determined. Family GT-2 enzymes, together with enzymes from families 7, 13 and 43, appear to form a clan of related structures with identical catalytic apparatus and reaction mechanism.
==About this Structure==
==About this Structure==
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[[Category: Bacillus subtilis]]
[[Category: Bacillus subtilis]]
[[Category: Single protein]]
[[Category: Single protein]]
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[[Category: Charnock, S.J.]]
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[[Category: Charnock, S J.]]
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[[Category: Davies, G.J.]]
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[[Category: Davies, G J.]]
[[Category: Tarbouriech, N.]]
[[Category: Tarbouriech, N.]]
[[Category: MG]]
[[Category: MG]]
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[[Category: transferase]]
[[Category: transferase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Feb 3 09:47:27 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:58:23 2008''

Revision as of 10:58, 21 February 2008


1h7q, resolution 2.00Å

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DTDP-MANGANESE COMPLEX OF SPSA FROM BACILLUS SUBTILIS

Overview

The vast majority of glycosidic-bond synthesis in nature is performed by glycosyltransferases, which use activated glycosides as the sugar donor. Typically, the activated leaving group is a nucleoside phosphate, lipid phosphate or phosphate. The nucleotide-sugar-dependent glycosyltransferases fall into over 50 sequence-based families, with the largest and most widespread family of inverting transferases named family GT-2. Here, we present the three-dimensional crystal structure of SpsA, the first and currently the only structural representative from family GT-2, in complex with both Mn-dTDP and Mg-dTDP at a resolution of 2 A. These structures reveal how SpsA and related enzymes may display nucleotide plasticity and permit a comparison of the catalytic centre of this enzyme with those from related sequence families whose three-dimensional structures have recently been determined. Family GT-2 enzymes, together with enzymes from families 7, 13 and 43, appear to form a clan of related structures with identical catalytic apparatus and reaction mechanism.

About this Structure

1H7Q is a Single protein structure of sequence from Bacillus subtilis with , and as ligands. Known structural/functional Site: . Full crystallographic information is available from OCA.

Reference

Three-dimensional structures of the Mn and Mg dTDP complexes of the family GT-2 glycosyltransferase SpsA: a comparison with related NDP-sugar glycosyltransferases., Tarbouriech N, Charnock SJ, Davies GJ, J Mol Biol. 2001 Dec 7;314(4):655-61. PMID:11733986

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