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1i2t

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{{STRUCTURE_1i2t| PDB=1i2t | SCENE= }}
{{STRUCTURE_1i2t| PDB=1i2t | SCENE= }}
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'''X-RAY STRUCTURE OF THE HUMAN HYPERPLASTIC DISCS PROTEIN: AN ORTHOLOG OF THE C-TERMINAL DOMAIN OF POLY(A)-BINDING PROTEIN'''
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===X-RAY STRUCTURE OF THE HUMAN HYPERPLASTIC DISCS PROTEIN: AN ORTHOLOG OF THE C-TERMINAL DOMAIN OF POLY(A)-BINDING PROTEIN===
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==Overview==
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The poly(A)-binding protein (PABP) recognizes the 3' mRNA poly(A) tail and plays an essential role in eukaryotic translation initiation and mRNA stabilization/degradation. PABP is a modular protein, with four N-terminal RNA-binding domains and an extensive C terminus. The C-terminal region of PABP is essential for normal growth in yeast and has been implicated in mediating PABP homo-oligomerization and protein-protein interactions. A small, proteolytically stable, highly conserved domain has been identified within this C-terminal segment. Remarkably, this domain is also present in the hyperplastic discs protein (HYD) family of ubiquitin ligases. To better understand the function of this conserved region, an x-ray structure of the PABP-like segment of the human HYD protein has been determined at 1.04-A resolution. The conserved domain adopts a novel fold resembling a right-handed supercoil of four alpha-helices. Sequence profile searches and comparative protein structure modeling identified a small ORF from the Arabidopsis thaliana genome that encodes a structurally similar but distantly related PABP/HYD domain. Phylogenetic analysis of the experimentally determined (HYD) and homology modeled (PABP) protein surfaces revealed a conserved feature that may be responsible for binding to a PABP interacting protein, Paip1, and other shared interaction partners.
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{{ABSTRACT_PUBMED_11287654}}
==About this Structure==
==About this Structure==
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[[Category: Sonenberg, N.]]
[[Category: Sonenberg, N.]]
[[Category: Four alpha-helical domain]]
[[Category: Four alpha-helical domain]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 10:19:35 2008''

Revision as of 07:19, 1 July 2008

Template:STRUCTURE 1i2t

X-RAY STRUCTURE OF THE HUMAN HYPERPLASTIC DISCS PROTEIN: AN ORTHOLOG OF THE C-TERMINAL DOMAIN OF POLY(A)-BINDING PROTEIN

Template:ABSTRACT PUBMED 11287654

About this Structure

1I2T is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

X-ray structure of the human hyperplastic discs protein: an ortholog of the C-terminal domain of poly(A)-binding protein., Deo RC, Sonenberg N, Burley SK, Proc Natl Acad Sci U S A. 2001 Apr 10;98(8):4414-9. Epub 2001 Apr 3. PMID:11287654

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