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1msz
From Proteopedia
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'''Solution structure of the R3H domain from human Smubp-2''' | '''Solution structure of the R3H domain from human Smubp-2''' | ||
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[[Category: Otting, G.]] | [[Category: Otting, G.]] | ||
[[Category: Sharipo, A.]] | [[Category: Sharipo, A.]] | ||
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Revision as of 22:40, 2 May 2008
Solution structure of the R3H domain from human Smubp-2
Overview
The R3H domain is a conserved sequence motif, identified in over 100 proteins, that is thought to be involved in polynucleotide-binding, including DNA, RNA and single-stranded DNA. In this work the 3D structure of the R3H domain from human Smubp-2 was determined by NMR spectroscopy. It is the first 3D structure determination of an R3H domain. The fold presents a small motif, consisting of a three-stranded antiparallel beta-sheet and two alpha-helices, which is related to the structures of the YhhP protein and the C-terminal domain of the translational initiation factor IF3. The similarities are non-trivial, as the amino acid identities are below 10%. Three conserved basic residues cluster on the same face of the R3H domain and could play a role in nucleic acid recognition. An extended hydrophobic area at a different site of the molecular surface could act as a protein-binding site. A strong correlation between conservation of hydrophobic amino acids and side-chain solvent protection indicates that the structure of the Smubp-2 R3H domain is representative of R3H domains in general.
About this Structure
1MSZ is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Solution structure of the R3H domain from human Smubp-2., Liepinsh E, Leonchiks A, Sharipo A, Guignard L, Otting G, J Mol Biol. 2003 Feb 7;326(1):217-23. PMID:12547203 Page seeded by OCA on Sat May 3 01:40:58 2008
