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| - | [[Image:1vf8.gif|left|200px]] | + | {{Seed}} |
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| | {{STRUCTURE_1vf8| PDB=1vf8 | SCENE= }} | | {{STRUCTURE_1vf8| PDB=1vf8 | SCENE= }} |
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| - | '''The Crystal Structure of Ym1 at 1.31 A Resolution'''
| + | ===The Crystal Structure of Ym1 at 1.31 A Resolution=== |
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| - | ==Overview==
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| - | Upon nematode infection, murine peritoneal macrophages synthesize and secrete large amounts of the Ym1 protein, which is a unique functional marker for alternatively activated macrophages in T(H)2-mediated inflammatory responses. Ym1 shares significant structural similarity to the family 18 chitinases. Previously, Ym1 has been studied with respect to its carbohydrate-binding ability and glycosyl hydrolysis activity and this has led to various inconclusive interpretations. Our present co-crystallization and soaking experiments with various glucosamine or N-acetylglucosamine oligomers yield only the uncomplexed Ym1. The refined Ym1 structure at 1.31A resolution clearly displays a water cluster forming an extensive hydrogen bond network with the "active-site" residues. This water cluster contributes notable electron density to lower resolution maps and this might have misled and given rise to a previous proposal for a monoglucosamine-binding site for Ym1. A structural comparison of family 18 glycosidase (-like) proteins reveals a lack of several conserved residues in Ym1, and illustrates the versatility of the divergent active sites. Therefore, Ym1 may lack N-acetylglucosamine-binding affinity, and this suggests that a new direction should be taken to unravel the function of Ym1.
| + | The line below this paragraph, {{ABSTRACT_PUBMED_15522777}}, adds the Publication Abstract to the page |
| | + | (as it appears on PubMed at http://www.pubmed.gov), where 15522777 is the PubMed ID number. |
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| | + | {{ABSTRACT_PUBMED_15522777}} |
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| | ==About this Structure== | | ==About this Structure== |
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| | [[Category: Structural plasticity]] | | [[Category: Structural plasticity]] |
| | [[Category: Ym1]] | | [[Category: Ym1]] |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 12:28:18 2008'' | + | |
| | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 15:00:54 2008'' |
Revision as of 12:00, 27 July 2008
Template:STRUCTURE 1vf8
The Crystal Structure of Ym1 at 1.31 A Resolution
Template:ABSTRACT PUBMED 15522777
About this Structure
1VF8 is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.
Reference
The crystal structure of Ym1 at 1.31 A resolution., Tsai ML, Liaw SH, Chang NC, J Struct Biol. 2004 Dec;148(3):290-6. PMID:15522777
Page seeded by OCA on Sun Jul 27 15:00:54 2008
