2wpo
From Proteopedia
(New page: 200px<br /><applet load="2wpo" size="450" color="white" frame="true" align="right" spinBox="true" caption="2wpo, resolution 2.7Å" /> '''HCMV PROTEASE INHIBIT...) |
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| - | [[Image:2wpo.gif|left|200px]]<br /><applet load="2wpo" size=" | + | [[Image:2wpo.gif|left|200px]]<br /><applet load="2wpo" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="2wpo, resolution 2.7Å" /> | caption="2wpo, resolution 2.7Å" /> | ||
'''HCMV PROTEASE INHIBITOR COMPLEX'''<br /> | '''HCMV PROTEASE INHIBITOR COMPLEX'''<br /> | ||
==Overview== | ==Overview== | ||
| - | Human cytomegalovirus (HCMV) protease belongs to a new class of serine | + | Human cytomegalovirus (HCMV) protease belongs to a new class of serine proteases, with a unique polypeptide backbone fold. The crystal structure of the protease in complex with a peptidomimetic inhibitor (based on the natural substrates and covering the P4 to P1' positions) has been determined at 2.7 A resolution. The inhibitor is bound in an extended conformation, forming an anti-parallel beta-sheet with the protease. The P3 and P1 side chains are less accessible to solvent, whereas the P4 and P2 side chains are more exposed. The inhibitor binding mode shows significant similarity to those observed for peptidomimetic inhibitors or substrates of other classes of serine proteases (chymotrypsin and subtilisin). HCMV protease therefore represents example of convergent evolution. In addition, large conformational differences relative to the structure of the free enzyme are observed, which may be important for inhibitor binding. |
==About this Structure== | ==About this Structure== | ||
| - | 2WPO is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Human_herpesvirus_5 Human herpesvirus 5] with DTG and BAC as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http:// | + | 2WPO is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Human_herpesvirus_5 Human herpesvirus 5] with <scene name='pdbligand=DTG:'>DTG</scene> and <scene name='pdbligand=BAC:'>BAC</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WPO OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Deziel, R.]] | [[Category: Deziel, R.]] | ||
[[Category: Lagace, L.]] | [[Category: Lagace, L.]] | ||
| - | [[Category: Massariol, M | + | [[Category: Massariol, M J.]] |
[[Category: Qian, C.]] | [[Category: Qian, C.]] | ||
[[Category: Tong, L.]] | [[Category: Tong, L.]] | ||
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[[Category: serine protease]] | [[Category: serine protease]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 18:56:56 2008'' |
Revision as of 16:56, 21 February 2008
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HCMV PROTEASE INHIBITOR COMPLEX
Overview
Human cytomegalovirus (HCMV) protease belongs to a new class of serine proteases, with a unique polypeptide backbone fold. The crystal structure of the protease in complex with a peptidomimetic inhibitor (based on the natural substrates and covering the P4 to P1' positions) has been determined at 2.7 A resolution. The inhibitor is bound in an extended conformation, forming an anti-parallel beta-sheet with the protease. The P3 and P1 side chains are less accessible to solvent, whereas the P4 and P2 side chains are more exposed. The inhibitor binding mode shows significant similarity to those observed for peptidomimetic inhibitors or substrates of other classes of serine proteases (chymotrypsin and subtilisin). HCMV protease therefore represents example of convergent evolution. In addition, large conformational differences relative to the structure of the free enzyme are observed, which may be important for inhibitor binding.
About this Structure
2WPO is a Single protein structure of sequence from Human herpesvirus 5 with and as ligands. Full crystallographic information is available from OCA.
Reference
Conserved mode of peptidomimetic inhibition and substrate recognition of human cytomegalovirus protease., Tong L, Qian C, Massariol MJ, Deziel R, Yoakim C, Lagace L, Nat Struct Biol. 1998 Sep;5(9):819-26. PMID:9731777
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