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1onl

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{{STRUCTURE_1onl| PDB=1onl | SCENE= }}
{{STRUCTURE_1onl| PDB=1onl | SCENE= }}
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'''Crystal structure of Thermus thermophilus HB8 H-protein of the glycine cleavage system'''
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===Crystal structure of Thermus thermophilus HB8 H-protein of the glycine cleavage system===
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==Overview==
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The glycine-cleavage system is a multi-enzyme complex consisting of four different components (the P-, H-, T- and L-proteins). Recombinant H-protein corresponding to that from Thermus thermophilus HB8 has been overexpressed, purified and crystallized. Synchrotron radiation from BL44B2 at SPring-8 was used to collect a native data set to 2.5 A resolution. The crystals belonged to the hexagonal space group P6(5) and contained three molecules per asymmetric unit, with a solvent content of 39%. Because of the large number of molecules within a closely packed unit cell, this structure was solved by six-dimensional molecular replacement with the program EPMR using the pea H-protein structure as a search model and was refined to an R factor of 0.189 and a free R factor of 0.256. Comparison with the pea H-protein reveals two highly conserved regions surrounding the lipoyl-lysine arm. Both of these regions are negatively charged and each has additional properties that are conserved in H-proteins from many species, suggesting that these regions are involved in intermolecular interactions. One region has previously been proposed to constitute an interaction surface with T-protein, while the other may be involved in an interaction with P-protein. Meanwhile, the lipoyl-lysine arm of the T. thermophilus H-protein was found to be more flexible than that of the pea H-protein, supporting the hypothesis that H-protein does not form a stable complex with L-protein during the reaction.
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==About this Structure==
==About this Structure==
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[[Category: Rsgi]]
[[Category: Rsgi]]
[[Category: Structural genomic]]
[[Category: Structural genomic]]
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Revision as of 16:20, 27 July 2008

Image:1onl.png

Template:STRUCTURE 1onl

Crystal structure of Thermus thermophilus HB8 H-protein of the glycine cleavage system

Template:ABSTRACT PUBMED 12925792

About this Structure

1ONL is a Single protein structure of sequence from Thermus thermophilus. Full crystallographic information is available from OCA.

Reference

Structure of Thermus thermophilus HB8 H-protein of the glycine-cleavage system, resolved by a six-dimensional molecular-replacement method., Nakai T, Ishijima J, Masui R, Kuramitsu S, Kamiya N, Acta Crystallogr D Biol Crystallogr. 2003 Sep;59(Pt 9):1610-8. Epub 2003, Aug 19. PMID:12925792

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