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1hdd

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{{STRUCTURE_1hdd| PDB=1hdd | SCENE= }}
{{STRUCTURE_1hdd| PDB=1hdd | SCENE= }}
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'''CRYSTAL STRUCTURE OF AN ENGRAILED HOMEODOMAIN-DNA COMPLEX AT 2.8 ANGSTROMS RESOLUTION: A FRAMEWORK FOR UNDERSTANDING HOMEODOMAIN-DNA INTERACTIONS'''
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===CRYSTAL STRUCTURE OF AN ENGRAILED HOMEODOMAIN-DNA COMPLEX AT 2.8 ANGSTROMS RESOLUTION: A FRAMEWORK FOR UNDERSTANDING HOMEODOMAIN-DNA INTERACTIONS===
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==Overview==
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The crystal structure of a complex containing the engrailed homeodomain and a duplex DNA site has been determined at 2.8 A resolution and refined to a crystallographic R factor of 24.4%. In this complex, two separate regions of the 61 amino acid polypeptide contact a TAAT subsite. An N-terminal arm fits into the minor groove, and the side chains of Arg-3 and Arg-5 make contacts near the 5' end of this "core consensus" binding site. An alpha helix fits into the major groove, and the side chains of IIe-47 and Asn-51 contact base pairs near the 3' end of the TAAT site. This "recognition helix" is part of a structurally conserved helix-turn-helix unit, but these helices are longer than the corresponding helices in the lambda repressor, and the relationship between the helix-turn-helix unit and the DNA is significantly different.
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(as it appears on PubMed at http://www.pubmed.gov), where 1977522 is the PubMed ID number.
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{{ABSTRACT_PUBMED_1977522}}
==About this Structure==
==About this Structure==
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[[Category: Double helix]]
[[Category: Double helix]]
[[Category: Protein-dna complex]]
[[Category: Protein-dna complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 18:43:37 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 08:01:39 2008''

Revision as of 05:01, 1 July 2008

Image:1hdd.png

Template:STRUCTURE 1hdd

CRYSTAL STRUCTURE OF AN ENGRAILED HOMEODOMAIN-DNA COMPLEX AT 2.8 ANGSTROMS RESOLUTION: A FRAMEWORK FOR UNDERSTANDING HOMEODOMAIN-DNA INTERACTIONS

Template:ABSTRACT PUBMED 1977522

About this Structure

1HDD is a Single protein structure of sequence from Drosophila melanogaster. Full crystallographic information is available from OCA.

Reference

Crystal structure of an engrailed homeodomain-DNA complex at 2.8 A resolution: a framework for understanding homeodomain-DNA interactions., Kissinger CR, Liu BS, Martin-Blanco E, Kornberg TB, Pabo CO, Cell. 1990 Nov 2;63(3):579-90. PMID:1977522

Page seeded by OCA on Tue Jul 1 08:01:39 2008

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