2avw
From Proteopedia
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| - | [[Image:2avw.gif|left|200px]] | + | [[Image:2avw.gif|left|200px]] |
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| - | '''Crystal structure of monoclinic form of streptococcus Mac-1''' | + | {{Structure |
| + | |PDB= 2avw |SIZE=350|CAPTION= <scene name='initialview01'>2avw</scene>, resolution 2.0Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene> and <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= mac ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=198466 Streptococcus pyogenes MGAS315]) | ||
| + | }} | ||
| + | |||
| + | '''Crystal structure of monoclinic form of streptococcus Mac-1''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2AVW is a [ | + | 2AVW is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Streptococcus_pyogenes_mgas315 Streptococcus pyogenes mgas315]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AVW OCA]. |
==Reference== | ==Reference== | ||
| - | Crystal structure of group A streptococcus Mac-1: insight into dimer-mediated specificity for recognition of human IgG., Agniswamy J, Nagiec MJ, Liu M, Schuck P, Musser JM, Sun PD, Structure. 2006 Feb;14(2):225-35. PMID:[http:// | + | Crystal structure of group A streptococcus Mac-1: insight into dimer-mediated specificity for recognition of human IgG., Agniswamy J, Nagiec MJ, Liu M, Schuck P, Musser JM, Sun PD, Structure. 2006 Feb;14(2):225-35. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16472742 16472742] |
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Streptococcus pyogenes mgas315]] | [[Category: Streptococcus pyogenes mgas315]] | ||
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[[Category: mac-1]] | [[Category: mac-1]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 15:54:29 2008'' |
Revision as of 13:54, 20 March 2008
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| , resolution 2.0Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | and | ||||||
| Gene: | mac (Streptococcus pyogenes MGAS315) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of monoclinic form of streptococcus Mac-1
Overview
Group A Streptococcus secretes cysteine proteases named Mac-1 and Mac-2 that mediate host immune evasion by targeting both IgG and Fc receptors. Here, we report the crystal structures of Mac-1 and its catalytically inactive C94A mutant in two different crystal forms. Despite the lack of sequence homology, Mac-1 adopts the canonical papain fold. Alanine mutations at the active site confirmed the critical residues involved in a papain-like catalytic mechanism. Mac-1 forms a symmetric dimer in both crystal forms and displays the unique dimer interface among papain superfamily members. Mutations at the dimer interface resulted in a significant reduction in IgG binding and catalysis, suggesting that the dimer contributes to both IgG specificity and enzyme cooperativity. A tunnel observed at the dimer interface constitutes a target for designing potential Mac-1-specific antimicrobial agents. The structures also offer insight into the functional difference between Mac-1 and Mac-2.
About this Structure
2AVW is a Single protein structure of sequence from Streptococcus pyogenes mgas315. Full crystallographic information is available from OCA.
Reference
Crystal structure of group A streptococcus Mac-1: insight into dimer-mediated specificity for recognition of human IgG., Agniswamy J, Nagiec MJ, Liu M, Schuck P, Musser JM, Sun PD, Structure. 2006 Feb;14(2):225-35. PMID:16472742
Page seeded by OCA on Thu Mar 20 15:54:29 2008
Categories: Single protein | Streptococcus pyogenes mgas315 | Agniswamy, J. | Liu, M. | Musser, J M. | Nagiec, M J. | Schuck, P. | Sun, P D. | GOL | SO4 | Mac-1
