1log

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(New page: 200px<br /><applet load="1log" size="450" color="white" frame="true" align="right" spinBox="true" caption="1log, resolution 2.1&Aring;" /> '''X-RAY STRUCTURE OF A ...)
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caption="1log, resolution 2.1&Aring;" />
'''X-RAY STRUCTURE OF A (ALPHA-MAN(1-3)BETA-MAN(1-4)GLCNAC)-LECTIN COMPLEX AT 2.1 ANGSTROMS RESOLUTION'''<br />
'''X-RAY STRUCTURE OF A (ALPHA-MAN(1-3)BETA-MAN(1-4)GLCNAC)-LECTIN COMPLEX AT 2.1 ANGSTROMS RESOLUTION'''<br />
==Overview==
==Overview==
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We describe herein the high resolution refined x-ray structure of a, trisaccharide, which is a part of the N-acetyllactosamine type glycan, found in the majority of the N-glycosyl-proteins, complexed to the, isolectin I. According to the potentials used by Imberty et al. (Imburty, A., Gerber, S., Tran, V., and Perez, S. (1990) Glycoconjugate J. 7, 27-54), the trisaccharide is in a low-energy state. Only one mannose moiety, establishes direct hydrogen bonds with the lectin, as it is the case for, monosaccharide-lectin complexes. The comparison of our trisaccharide with, the one determined in solution by Warin et al. (Warin, V., Baert, F., Fouret, R., Strecker, G., Fournet, B., and Montreuil, J. (1979) Carbohydr., Res. 76, 11-22) shows that both adopt roughly the same conformation. The, differences in these two sugar structures allow us to assign the role of, water molecules present in the vicinity of our trisaccharide for the, stabilization of this sugar-lectin complex.
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We describe herein the high resolution refined x-ray structure of a trisaccharide, which is a part of the N-acetyllactosamine type glycan found in the majority of the N-glycosyl-proteins, complexed to the isolectin I. According to the potentials used by Imberty et al. (Imburty, A., Gerber, S., Tran, V., and Perez, S. (1990) Glycoconjugate J. 7, 27-54) the trisaccharide is in a low-energy state. Only one mannose moiety establishes direct hydrogen bonds with the lectin, as it is the case for monosaccharide-lectin complexes. The comparison of our trisaccharide with the one determined in solution by Warin et al. (Warin, V., Baert, F., Fouret, R., Strecker, G., Fournet, B., and Montreuil, J. (1979) Carbohydr. Res. 76, 11-22) shows that both adopt roughly the same conformation. The differences in these two sugar structures allow us to assign the role of water molecules present in the vicinity of our trisaccharide for the stabilization of this sugar-lectin complex.
==About this Structure==
==About this Structure==
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1LOG is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Lathyrus_ochrus Lathyrus ochrus] with CA and MN as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1LOG OCA].
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1LOG is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Lathyrus_ochrus Lathyrus ochrus] with <scene name='pdbligand=CA:'>CA</scene> and <scene name='pdbligand=MN:'>MN</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LOG OCA].
==Reference==
==Reference==
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[[Category: lectin]]
[[Category: lectin]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Nov 20 20:43:25 2007''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:46:58 2008''

Revision as of 11:47, 21 February 2008

Image:1log.jpg

1log, resolution 2.1Å

Drag the structure with the mouse to rotate

X-RAY STRUCTURE OF A (ALPHA-MAN(1-3)BETA-MAN(1-4)GLCNAC)-LECTIN COMPLEX AT 2.1 ANGSTROMS RESOLUTION

Overview

We describe herein the high resolution refined x-ray structure of a trisaccharide, which is a part of the N-acetyllactosamine type glycan found in the majority of the N-glycosyl-proteins, complexed to the isolectin I. According to the potentials used by Imberty et al. (Imburty, A., Gerber, S., Tran, V., and Perez, S. (1990) Glycoconjugate J. 7, 27-54) the trisaccharide is in a low-energy state. Only one mannose moiety establishes direct hydrogen bonds with the lectin, as it is the case for monosaccharide-lectin complexes. The comparison of our trisaccharide with the one determined in solution by Warin et al. (Warin, V., Baert, F., Fouret, R., Strecker, G., Fournet, B., and Montreuil, J. (1979) Carbohydr. Res. 76, 11-22) shows that both adopt roughly the same conformation. The differences in these two sugar structures allow us to assign the role of water molecules present in the vicinity of our trisaccharide for the stabilization of this sugar-lectin complex.

About this Structure

1LOG is a Protein complex structure of sequences from Lathyrus ochrus with and as ligands. Full crystallographic information is available from OCA.

Reference

X-ray structure of a (alpha-Man(1-3)beta-Man(1-4)GlcNAc)-lectin complex at 2.1-A resolution. The role of water in sugar-lectin interaction., Bourne Y, Rouge P, Cambillau C, J Biol Chem. 1990 Oct 25;265(30):18161-5. PMID:2211692

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