1iru

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[[Image:1iru.gif|left|200px]]
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{{Seed}}
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[[Image:1iru.png|left|200px]]
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{{STRUCTURE_1iru| PDB=1iru | SCENE= }}
{{STRUCTURE_1iru| PDB=1iru | SCENE= }}
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'''Crystal Structure of the mammalian 20S proteasome at 2.75 A resolution'''
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===Crystal Structure of the mammalian 20S proteasome at 2.75 A resolution===
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==Overview==
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The 20S proteasome is the catalytic portion of the 26S proteasome. Constitutively expressed mammalian 20S proteasomes have three active subunits, beta 1, beta 2, and beta 5, which are replaced in the immunoproteasome by interferon-gamma-inducible subunits beta 1i, beta 2i, and beta 5i, respectively. Here we determined the crystal structure of the bovine 20S proteasome at 2.75 A resolution. The structures of alpha 2, beta 1, beta 5, beta 6, and beta 7 subunits of the bovine enzyme were different from the yeast enzyme but enabled the bovine proteasome to accommodate either the constitutive or the inducible subunits. A novel N-terminal nucleophile hydrolase activity was proposed for the beta 7 subunit. We also determined the site of the nuclear localization signals in the molecule. A model of the immunoproteasome was predicted from this constitutive structure.
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The line below this paragraph, {{ABSTRACT_PUBMED_12015144}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 12015144 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12015144}}
==About this Structure==
==About this Structure==
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[[Category: Proteolysis]]
[[Category: Proteolysis]]
[[Category: Ubiquitin]]
[[Category: Ubiquitin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 20:20:13 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 13:53:23 2008''

Revision as of 10:53, 1 July 2008

Image:1iru.png

Template:STRUCTURE 1iru

Crystal Structure of the mammalian 20S proteasome at 2.75 A resolution

Template:ABSTRACT PUBMED 12015144

About this Structure

1IRU is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.

Reference

The structure of the mammalian 20S proteasome at 2.75 A resolution., Unno M, Mizushima T, Morimoto Y, Tomisugi Y, Tanaka K, Yasuoka N, Tsukihara T, Structure. 2002 May;10(5):609-18. PMID:12015144

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