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1l3g

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{{STRUCTURE_1l3g| PDB=1l3g | SCENE= }}
{{STRUCTURE_1l3g| PDB=1l3g | SCENE= }}
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'''NMR Structure of the DNA-binding Domain of Cell Cycle Protein, Mbp1(2-124) from Saccharomyces cerevisiae'''
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===NMR Structure of the DNA-binding Domain of Cell Cycle Protein, Mbp1(2-124) from Saccharomyces cerevisiae===
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==Overview==
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The three-dimensional solution structure of the DNA-binding domain of Mlu-1 box binding protein (Mbp1) has been determined by multidimensional NMR spectroscopy. Mbp1 is a cell cycle transcription factor from Saccharomyces cerevisiae and consists of an N-terminal DNA-binding domain, a series of ankyrin repeats, and a heterodimerization domain at the C-terminus. A set of conformers comprising 19 refined structures was calculated via a molecular dynamics simulated annealing protocol using distance, dihedral angle, and residual dipolar coupling restraints derived from either double or triple resonance NMR experiments. The solution structure consists of a six-stranded beta-sheet segment folded against two pairs of alpha-helices in the topology of the winged helix-turn-helix family of proteins and is in agreement with the X-ray structures. In addition, the solution structure shows that the C-terminal tail region of this domain folds back and makes specific interactions with the N-terminal beta-strand of the protein. This C-terminal region is essential for full DNA-binding activity but appears in the X-ray structure to be disordered. The fold-back structure extends the region of positive electrostatic potential, and this may enhance the nonspecific contribution to binding by favorable electrostatic interactions with the DNA backbone.
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{{ABSTRACT_PUBMED_12564929}}
==About this Structure==
==About this Structure==
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1L3G is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1L3G OCA].
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1L3G is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1L3G OCA].
==Reference==
==Reference==
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[[Category: Mlu 1 cell cycle box binding protein]]
[[Category: Mlu 1 cell cycle box binding protein]]
[[Category: Winged helix-turn-helix protein]]
[[Category: Winged helix-turn-helix protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 11:37:06 2008''

Revision as of 08:37, 2 July 2008

Template:STRUCTURE 1l3g

NMR Structure of the DNA-binding Domain of Cell Cycle Protein, Mbp1(2-124) from Saccharomyces cerevisiae

Template:ABSTRACT PUBMED 12564929

About this Structure

1L3G is a Single protein structure of sequence from Saccharomyces cerevisiae. Full experimental information is available from OCA.

Reference

NMR structure of the DNA-binding domain of the cell cycle protein Mbp1 from Saccharomyces cerevisiae., Nair M, McIntosh PB, Frenkiel TA, Kelly G, Taylor IA, Smerdon SJ, Lane AN, Biochemistry. 2003 Feb 11;42(5):1266-73. PMID:12564929

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