1jrr: Difference between revisions
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[[Image:1jrr.gif|left|200px]] | [[Image:1jrr.gif|left|200px]] | ||
'''HUMAN PLASMINOGEN ACTIVATOR INHIBITOR-2.[LOOP (66-98) DELETIONMUTANT] COMPLEXED WITH PEPTIDE MIMIckING THE REACTIVE CENTER LOOP''' | {{Structure | ||
|PDB= 1jrr |SIZE=350|CAPTION= <scene name='initialview01'>1jrr</scene>, resolution 1.60Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene> and <scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''HUMAN PLASMINOGEN ACTIVATOR INHIBITOR-2.[LOOP (66-98) DELETIONMUTANT] COMPLEXED WITH PEPTIDE MIMIckING THE REACTIVE CENTER LOOP''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1JRR is a [ | 1JRR is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JRR OCA]. | ||
==Reference== | ==Reference== | ||
Crystal structure of the complex of plasminogen activator inhibitor 2 with a peptide mimicking the reactive center loop., Jankova L, Harrop SJ, Saunders DN, Andrews JL, Bertram KC, Gould AR, Baker MS, Curmi PM, J Biol Chem. 2001 Nov 16;276(46):43374-82. Epub 2001 Aug 23. PMID:[http:// | Crystal structure of the complex of plasminogen activator inhibitor 2 with a peptide mimicking the reactive center loop., Jankova L, Harrop SJ, Saunders DN, Andrews JL, Bertram KC, Gould AR, Baker MS, Curmi PM, J Biol Chem. 2001 Nov 16;276(46):43374-82. Epub 2001 Aug 23. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11546761 11546761] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
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[[Category: serpin]] | [[Category: serpin]] | ||
''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 12:07:33 2008'' | ||
Revision as of 10:07, 20 March 2008
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| 1jrr, resolution 1.60Å | |||||||||||||
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| Ligands: | ACE and BME | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
HUMAN PLASMINOGEN ACTIVATOR INHIBITOR-2.[LOOP (66-98) DELETIONMUTANT] COMPLEXED WITH PEPTIDE MIMIckING THE REACTIVE CENTER LOOP
Overview
The structure of the serpin, plasminogen activator inhibitor type-2 (PAI-2), in a complex with a peptide mimicking its reactive center loop (RCL) has been determined at 1.6-A resolution. The structure shows the relaxed state serpin structure with a prominent six-stranded beta-sheet. Clear electron density is seen for all residues in the peptide. The P1 residue of the peptide binds to a well defined pocket at the base of PAI-2 that may be important in determining the specificity of protease inhibition. The stressed-to-relaxed state (S --> R) transition in PAI-2 can be modeled as the relative motion between a quasirigid core domain and a smaller segment comprising helix hF and beta-strands s1A, s2A, and s3A. A comparison of the Ramachandran plots of the stressed and relaxed state PAI-2 structures reveals the location of several hinge regions connecting these two domains. The hinge regions cluster in three locations on the structure, ensuring a cooperative S --> R transition. We hypothesize that the hinge formed by the conserved Gly(206) on beta-strand s3A in the breach region of PAI-2 effects the S --> R transition by altering its backbone torsion angles. This torsional change is due to the binding of the P14 threonine of the RCL to the open breach region of PAI-2.
About this Structure
1JRR is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Crystal structure of the complex of plasminogen activator inhibitor 2 with a peptide mimicking the reactive center loop., Jankova L, Harrop SJ, Saunders DN, Andrews JL, Bertram KC, Gould AR, Baker MS, Curmi PM, J Biol Chem. 2001 Nov 16;276(46):43374-82. Epub 2001 Aug 23. PMID:11546761
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