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1ib8

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[[Image:1ib8.jpg|left|200px]]
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{{STRUCTURE_1ib8| PDB=1ib8 | SCENE= }}
{{STRUCTURE_1ib8| PDB=1ib8 | SCENE= }}
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'''SOLUTION STRUCTURE AND FUNCTION OF A CONSERVED PROTEIN SP14.3 ENCODED BY AN ESSENTIAL STREPTOCOCCUS PNEUMONIAE GENE'''
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===SOLUTION STRUCTURE AND FUNCTION OF A CONSERVED PROTEIN SP14.3 ENCODED BY AN ESSENTIAL STREPTOCOCCUS PNEUMONIAE GENE===
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==Overview==
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Streptococcus pneumoniae is a major human pathogen that causes high mortality and morbidity rates and has developed resistance to many antibiotics. The genome of S. pneumoniae has recently been completely sequenced revealing many genes encoding hypothetical proteins of unknown function. We have found that the gene encoding one such conserved protein, SP14.3, is essential for growth of S. pneumonia. Since it is essential, SP14.3 represents a potential target for drug discovery. Here, we describe the three-dimensional solution structure of SP14.3 as determined by NMR spectroscopy. The structure consists of two domains each with an alpha/beta-fold. The N-terminal domain contains two alpha-helices and a three-stranded beta-sheet, while the C-terminal domain is composed of one alpha-helix and a five-stranded beta-sheet. The N-terminal domain of the protein contains a highly negatively charged surface and resembles the fold of the N-terminal domain of Thermus thermophilus ribosomal protein S3. The C-terminal domain has a protein fold similar to human small nuclear ribonucleoprotein Sm D3 and Haloarcula marismortui ribosomal protein L21E. The two domains of the protein tumble in solution overall as a whole with an overall molecular rotational correlation time (tau(m)) of 12.9 ns at 25 degrees C. The relative orientation of the two domains is not defined by the nuclear Overhauser effect data. Indeed, residual dipolar couplings and the structure calculations indicate that the relative orientation of the two domains is not rigidly oriented with respect to one another in solution.
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(as it appears on PubMed at http://www.pubmed.gov), where 11493012 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11493012}}
==About this Structure==
==About this Structure==
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1IB8 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Streptococcus_pneumoniae Streptococcus pneumoniae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IB8 OCA].
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1IB8 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Streptococcus_pneumoniae Streptococcus pneumoniae]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IB8 OCA].
==Reference==
==Reference==
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[[Category: Ribosomal protein]]
[[Category: Ribosomal protein]]
[[Category: Structural genomic]]
[[Category: Structural genomic]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 19:47:51 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 10:42:05 2008''

Revision as of 07:42, 1 July 2008

Image:1ib8.png

Template:STRUCTURE 1ib8

SOLUTION STRUCTURE AND FUNCTION OF A CONSERVED PROTEIN SP14.3 ENCODED BY AN ESSENTIAL STREPTOCOCCUS PNEUMONIAE GENE

Template:ABSTRACT PUBMED 11493012

About this Structure

1IB8 is a Single protein structure of sequence from Streptococcus pneumoniae. Full experimental information is available from OCA.

Reference

Solution structure and function of a conserved protein SP14.3 encoded by an essential Streptococcus pneumoniae gene., Yu L, Gunasekera AH, Mack J, Olejniczak ET, Chovan LE, Ruan X, Towne DL, Lerner CG, Fesik SW, J Mol Biol. 2001 Aug 17;311(3):593-604. PMID:11493012

Page seeded by OCA on Tue Jul 1 10:42:05 2008

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