2cg4: Difference between revisions

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[[Image:2cg4.gif|left|200px]]
{{Seed}}
[[Image:2cg4.png|left|200px]]


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{{STRUCTURE_2cg4|  PDB=2cg4  |  SCENE=  }}  
{{STRUCTURE_2cg4|  PDB=2cg4  |  SCENE=  }}  


'''STRUCTURE OF E.COLI ASNC'''
===STRUCTURE OF E.COLI ASNC===




==Overview==
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The Lrp/AsnC family of transcriptional regulatory proteins is found in both archaea and bacteria. Members of the family influence cellular metabolism in both a global (Lrp) and specific (AsnC) manner, often in response to exogenous amino acid effectors. In the present study we have determined both the first bacterial and the highest resolution structures for members of the family. Escherichia coli AsnC is a specific gene regulator whose activity is triggered by asparagine binding. Bacillus subtilis LrpC is a global regulator involved in chromosome condensation. Our AsnC-asparagine structure is the first for a regulator-effector complex and is revealed as an octameric disc. Key ligand recognition residues are identified together with a route for ligand access. The LrpC structure reveals a stable octamer supportive of a topological role in dynamic DNA packaging. The structures yield significant clues to the functionality of Lrp/AsnC-type regulators with respect to ligand binding and oligomerization states as well as to their role in specific and global DNA regulation.
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{{ABSTRACT_PUBMED_16528101}}


==About this Structure==
==About this Structure==
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[[Category: Transcription]]
[[Category: Transcription]]
[[Category: Transcription regulation]]
[[Category: Transcription regulation]]
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Revision as of 23:35, 28 July 2008

File:2cg4.png

Template:STRUCTURE 2cg4

STRUCTURE OF E.COLI ASNC

Template:ABSTRACT PUBMED 16528101

About this Structure

2CG4 is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.

Reference

Structural insight into gene transcriptional regulation and effector binding by the Lrp/AsnC family., Thaw P, Sedelnikova SE, Muranova T, Wiese S, Ayora S, Alonso JC, Brinkman AB, Akerboom J, van der Oost J, Rafferty JB, Nucleic Acids Res. 2006 Mar 9;34(5):1439-49. Print 2006. PMID:16528101

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