1sut

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[[Image:1sut.jpg|left|200px]]
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{{STRUCTURE_1sut| PDB=1sut | SCENE= }}
{{STRUCTURE_1sut| PDB=1sut | SCENE= }}
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'''NMR STUDY OF THE PROLINE REPEAT FROM TUS'''
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===NMR STUDY OF THE PROLINE REPEAT FROM TUS===
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==Overview==
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The structure of a 22 amino acid peptide, TPPI [Nedved, M. L., Gottlieb, P. A., &amp; Moe, G. R. (1994) Nucleic Acids Res. 22, 5024-5030], that is similar to the proline repeat segment of the replication arrest protein, Tus, has been determined by 1H NMR in 50% trifluroethanol. The structure is a novel left-handed helix having 5.56 residues per turn and a regular hydrogen bonding network that is limited to one side of the helix and contains a channel that runs down the helix axis. The latter feature gives the structure an overall pipe-like appearance; hence, the structure has been designated a proline pipe helix. The Tus proline pipe is also amphiphilic with one side consisting of proline and other nonpolar residues while the other side contains mostly basic and other polar residues. Tus and several other proteins that contain a similar proline repeat sequence are DNA binding proteins. It is shown here that the proline pipe helix of TPPI can be accommodated within the major grove of B-form DNA in a manner that positions nearly all of the basic residues near phosphate groups in the DNA backbone. The proline pipe helical motif may be a structural element of many other proteins including integral membrane receptor proteins.
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{{ABSTRACT_PUBMED_8547250}}
==About this Structure==
==About this Structure==
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1SUT is a [[Single protein]] structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SUT OCA].
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1SUT is a [[Single protein]] structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SUT OCA].
==Reference==
==Reference==
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[[Category: Neiss, T G.]]
[[Category: Neiss, T G.]]
[[Category: Dna-binding protein]]
[[Category: Dna-binding protein]]
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Revision as of 07:01, 28 July 2008

Image:1sut.png

Template:STRUCTURE 1sut

NMR STUDY OF THE PROLINE REPEAT FROM TUS

Template:ABSTRACT PUBMED 8547250

About this Structure

1SUT is a Single protein structure. Full experimental information is available from OCA.

Reference

Proline pipe helix: structure of the tus proline repeat determined by 1H NMR., Butcher DJ, Nedved ML, Neiss TG, Moe GR, Biochemistry. 1996 Jan 23;35(3):698-703. PMID:8547250

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