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1b2p

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{{STRUCTURE_1b2p| PDB=1b2p | SCENE= }}
{{STRUCTURE_1b2p| PDB=1b2p | SCENE= }}
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'''NATIVE MANNOSE-SPECIFIC BULB LECTIN FROM SCILLA CAMPANULATA (BLUEBELL) AT 1.7 ANGSTROMS RESOLUTION'''
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===NATIVE MANNOSE-SPECIFIC BULB LECTIN FROM SCILLA CAMPANULATA (BLUEBELL) AT 1.7 ANGSTROMS RESOLUTION===
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==Overview==
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The X-ray crystal structure of native Scilla campanulata agglutinin, a mannose-specific lectin from bluebell bulbs and a member of the Liliaceae family, has been determined by molecular replacement and refined to an R value of 0.186 at 1.7 A resolution. The lectin crystallizes in space group P21212 with unit-cell parameters a = 70. 42, b = 92.95, c = 46.64 A. The unit cell contains eight protein molecules of Mr = 13143 Da (119 amino-acid residues). The asymmetric unit comprises two chemically identical molecules, A and B, related by a non-crystallographic twofold axis perpendicular to c. This dimer further associates by crystallographic twofold symmetry to form a tetramer. The fold of the polypeptide backbone closely resembles that found in the lectins from Galanthus nivalis (snowdrop) and Hippeastrum (amaryllis) and contains a threefold symmetric beta-prism made up of three antiparallel four-stranded beta-sheets. Each of the four-stranded beta-sheets (I, II and III) possesses a potential saccharide-binding site containing conserved residues; however, site II has two mutations relative to sites I and III which may prevent ligation at this site. Our study provides the first accurate and detailed description of a native (unligated) structure from this superfamily of mannose-specific bulb lectins and will allow comparisons with a number of lectin-saccharide complexes which have already been determined or are currently under investigation.
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{{ABSTRACT_PUBMED_10393293}}
==About this Structure==
==About this Structure==
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[[Category: Monocot]]
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[[Category: Protein- carbohydrate interaction]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 18:05:47 2008''

Revision as of 15:05, 30 June 2008

Image:1b2p.png

Template:STRUCTURE 1b2p

NATIVE MANNOSE-SPECIFIC BULB LECTIN FROM SCILLA CAMPANULATA (BLUEBELL) AT 1.7 ANGSTROMS RESOLUTION

Template:ABSTRACT PUBMED 10393293

About this Structure

1B2P is a Single protein structure of sequence from Hyacinthoides hispanica. Full crystallographic information is available from OCA.

Reference

Structure of the native (unligated) mannose-specific bulb lectin from Scilla campanulata (bluebell) at 1.7 A resolution., Wood SD, Wright LM, Reynolds CD, Rizkallah PJ, Allen AK, Peumans WJ, Van Damme EJ, Acta Crystallogr D Biol Crystallogr. 1999 Jul;55(Pt 7):1264-72. PMID:10393293

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