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4mon

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[[Image:4mon.gif|left|200px]]
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{{STRUCTURE_4mon| PDB=4mon | SCENE= }}
{{STRUCTURE_4mon| PDB=4mon | SCENE= }}
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'''ORTHORHOMBIC MONELLIN'''
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===ORTHORHOMBIC MONELLIN===
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==Overview==
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The structure of orthorhombic crystals of monellin, a sweet protein extracted from African serendipity berries, has been solved by molecular replacement and refined to 2.3 A resolution. The final R factor was 0.150 for a model with excellent geometry. A monellin molecule consists of two peptides that are non-covalently bound, with chain A composed of three beta-strands interconnected by loop regions and chain B composed of two beta-strands interconnected by an alpha-helix. The N terminus of chain A is in close proximity to the C terminus of chain B. The two molecules in the asymmetric unit are related by a non-crystallographic twofold axis and form a dimer, similar to those previously observed in other crystal forms of both natural and single-chain monellin. The r.m.s, deviation between the Calpha atoms in the two independent molecules is 0.60 A, while the deviations from the individual molecules in the previously reported monoclinic crystals are 0.50-0.57 A. This result proves that the structure of monellin is not significantly influenced by crystal packing forces.
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(as it appears on PubMed at http://www.pubmed.gov), where 15299859 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15299859}}
==About this Structure==
==About this Structure==
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[[Category: Orthorhombic crystal]]
[[Category: Orthorhombic crystal]]
[[Category: Sweet-tasting protein]]
[[Category: Sweet-tasting protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 22:26:56 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Jul 3 13:44:31 2008''

Revision as of 10:44, 3 July 2008

Image:4mon.png

Template:STRUCTURE 4mon

ORTHORHOMBIC MONELLIN

Template:ABSTRACT PUBMED 15299859

About this Structure

4MON is a Protein complex structure of sequences from Dioscoreophyllum cumminsii. Full crystallographic information is available from OCA.

Reference

Structure of monellin refined to 2.3 a resolution in the orthorhombic crystal form., Bujacz G, Miller M, Harrison R, Thanki N, Gilliland GL, Ogata CM, Kim SH, Wlodawer A, Acta Crystallogr D Biol Crystallogr. 1997 Nov 1;53(Pt 6):713-9. PMID:15299859

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