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1h4p

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{{STRUCTURE_1h4p| PDB=1h4p | SCENE= }}
{{STRUCTURE_1h4p| PDB=1h4p | SCENE= }}
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'''CRYSTAL STRUCTURE OF EXO-1,3-BETA GLUCANSE FROM SACCHAROMYCES CEREVISIAE'''
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===CRYSTAL STRUCTURE OF EXO-1,3-BETA GLUCANSE FROM SACCHAROMYCES CEREVISIAE===
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==Overview==
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We present in vitro data that explain the recognition mechanism of misfolded glycoproteins by UDP-glucose glycoprotein-glucosyltransferase (UGGT). The glycoprotein exo-(1,3)-beta-glucanase (beta-Glc) bearing two glycans unfolds in a pH-dependent manner to become a misfolded substrate for UGGT. In the crystal structure of this glycoprotein, the local hydrophobicity surrounding each glycosylation site coincides with the differential recognition of N-linked glycans by UGGT. We introduced a single F280S point mutation, producing a beta-Glc protein with full enzymatic activity that was both recognized as misfolded and monoglucosylated by UGGT. Contrary to current views, these data show that UGGT can modify N-linked glycans positioned at least 40 A from localized regions of disorder and sense subtle conformational changes within structurally compact, enzymatically active glycoprotein substrates.
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(as it appears on PubMed at http://www.pubmed.gov), where 14730348 is the PubMed ID number.
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{{ABSTRACT_PUBMED_14730348}}
==About this Structure==
==About this Structure==
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[[Category: Glycosidase]]
[[Category: Glycosidase]]
[[Category: Hydrolyase]]
[[Category: Hydrolyase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 18:25:41 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 06:37:14 2008''

Revision as of 03:37, 1 July 2008

Image:1h4p.png

Template:STRUCTURE 1h4p

CRYSTAL STRUCTURE OF EXO-1,3-BETA GLUCANSE FROM SACCHAROMYCES CEREVISIAE

Template:ABSTRACT PUBMED 14730348

About this Structure

1H4P is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

The ER protein folding sensor UDP-glucose glycoprotein-glucosyltransferase modifies substrates distant to local changes in glycoprotein conformation., Taylor SC, Ferguson AD, Bergeron JJ, Thomas DY, Nat Struct Mol Biol. 2004 Feb;11(2):128-34. Epub 2004 Jan 4. PMID:14730348

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