1f8q

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{{STRUCTURE_1f8q| PDB=1f8q | SCENE= }}
{{STRUCTURE_1f8q| PDB=1f8q | SCENE= }}
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'''CRYSTAL STRUCTURE OF ALPHA-MOMORCHARIN IN ACETONITRILE-WATER MIXTURE'''
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===CRYSTAL STRUCTURE OF ALPHA-MOMORCHARIN IN ACETONITRILE-WATER MIXTURE===
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==Overview==
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Crystals of alpha-momorcharin (MMC) were cross-linked and soaked in an 80% acetonitrile--water mixture and X-ray data were collected to 2.2 A resolution. MMC is a ribosome-inactivating protein with a sugar chain on Asn-227. In previous studies, the whole conformation of the sugar chain could not be obtained in the aqueous system. Here the structure of MMC in a low water system is shown to be similar to the native one, but the sugar chain on Asn-227 is defined by the electron density map. Several oxygen atoms of the oligosaccharide formed intramolecular hydrogen bonds to the protein moiety. The conformation of the residues in the active center is similar to that in the aqueous system. Our results show conformational alteration of the tetrasaccharide of MMC in organic media. They indicate that the oligosaccharides are more rigid in organic solvents. X-ray determination in organic media may be used to solve some structures of oligosaccharides linked to glycoproteins.
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(as it appears on PubMed at http://www.pubmed.gov), where 11451448 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11451448}}
==About this Structure==
==About this Structure==
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[[Category: Organic slovent]]
[[Category: Organic slovent]]
[[Category: Ribosome-inactivating protein]]
[[Category: Ribosome-inactivating protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 16:02:09 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 02:52:29 2008''

Revision as of 23:52, 30 June 2008

Image:1f8q.png

Template:STRUCTURE 1f8q

CRYSTAL STRUCTURE OF ALPHA-MOMORCHARIN IN ACETONITRILE-WATER MIXTURE

Template:ABSTRACT PUBMED 11451448

About this Structure

1F8Q is a Single protein structure of sequence from Momordica charantia. Full crystallographic information is available from OCA.

Reference

Crystal structure of alpha-momorcharin in 80% acetonitrile--water mixture., Zhu G, Huang Q, Qian M, Tang Y, Biochim Biophys Acta. 2001 Jul 9;1548(1):152-8. PMID:11451448

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