1wlj: Difference between revisions

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[[Image:1wlj.jpg|left|200px]]
{{Seed}}
[[Image:1wlj.png|left|200px]]


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{{STRUCTURE_1wlj|  PDB=1wlj  |  SCENE=  }}  
{{STRUCTURE_1wlj|  PDB=1wlj  |  SCENE=  }}  


'''human ISG20'''
===human ISG20===




==Overview==
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ISG20 is an interferon-induced antiviral exoribonuclease that acts on single-stranded RNA and also has minor activity towards single-stranded DNA. It belongs to the DEDDh group of RNases of the DEDD exonuclease superfamily. We have solved the crystal structure of human ISG20 complexed with two Mn2+ ions and uridine 5'-monophosphate (UMP) at 1.9 A resolution. Its structure, including that of the active site, is very similar to those of the corresponding domains of two DEDDh-group DNases, the epsilon subunit of Escherichia coli DNA polymerase III and E. coli exonuclease I, strongly suggesting that its catalytic mechanism is identical to that of the two DNases. However, ISG20 also has distinctive residues, Met14 and Arg53, to accommodate hydrogen bonds with the 2'-OH group of the UMP ribose, and these residues may be responsible for the preference of ISG20 for RNA substrates.
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{{ABSTRACT_PUBMED_15527770}}


==About this Structure==
==About this Structure==
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[[Category: Tanaka, T.]]
[[Category: Tanaka, T.]]
[[Category: Exoribonuclease]]
[[Category: Exoribonuclease]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 13:50:32 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 09:02:37 2008''

Revision as of 06:02, 29 July 2008

File:1wlj.png

Template:STRUCTURE 1wlj

human ISG20

Template:ABSTRACT PUBMED 15527770

About this Structure

1WLJ is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Crystal structure of human ISG20, an interferon-induced antiviral ribonuclease., Horio T, Murai M, Inoue T, Hamasaki T, Tanaka T, Ohgi T, FEBS Lett. 2004 Nov 5;577(1-2):111-6. PMID:15527770

Page seeded by OCA on Tue Jul 29 09:02:37 2008

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