1zik

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[[Image:1zik.gif|left|200px]]
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{{Seed}}
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{{STRUCTURE_1zik| PDB=1zik | SCENE= }}
{{STRUCTURE_1zik| PDB=1zik | SCENE= }}
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'''GCN4-LEUCINE ZIPPER CORE MUTANT ASN16LYS IN THE DIMERIC STATE'''
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===GCN4-LEUCINE ZIPPER CORE MUTANT ASN16LYS IN THE DIMERIC STATE===
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==Overview==
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A conserved asparagine (Asn 16) buried in the interface of the GCN4 leucine zipper selectively favours the parallel, dimeric, coiled-coil structure. To test if other polar residues confer oligomerization specificity, the structural effects of Gln and Lys substitutions for Asn 16 were characterized. Like the wild-type peptide, the Asn 16Lys mutant formed exclusively dimers. In contrast, Gln 16, despite its chemical similarity to Asn, allowed the peptide to form both dimers and trimers. The Gln 16 side chain was accommodated by qualitatively different interactions in the dimer and trimer crystal structures. These findings demonstrate that the structural selectivity of polar residues results not only from the burial of polar atoms, but also depends on the complementarity of the side-chain stereochemistry with the surrounding structural environment.
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(as it appears on PubMed at http://www.pubmed.gov), where 8946854 is the PubMed ID number.
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{{ABSTRACT_PUBMED_8946854}}
==About this Structure==
==About this Structure==
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[[Category: Nuclear protein]]
[[Category: Nuclear protein]]
[[Category: Transcription regulation]]
[[Category: Transcription regulation]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 17:40:16 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 11:48:47 2008''

Revision as of 08:48, 29 July 2008

Image:1zik.png

Template:STRUCTURE 1zik

GCN4-LEUCINE ZIPPER CORE MUTANT ASN16LYS IN THE DIMERIC STATE

Template:ABSTRACT PUBMED 8946854

About this Structure

1ZIK is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

Buried polar residues and structural specificity in the GCN4 leucine zipper., Gonzalez L Jr, Woolfson DN, Alber T, Nat Struct Biol. 1996 Dec;3(12):1011-8. PMID:8946854

Page seeded by OCA on Tue Jul 29 11:48:47 2008

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