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1el0

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[[Image:1el0.gif|left|200px]]
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{{STRUCTURE_1el0| PDB=1el0 | SCENE= }}
{{STRUCTURE_1el0| PDB=1el0 | SCENE= }}
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'''SOLUTION STRUCTURE OF THE HUMAN CC CHEMOKINE, I-309'''
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===SOLUTION STRUCTURE OF THE HUMAN CC CHEMOKINE, I-309===
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==Overview==
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I-309 is a member of the CC subclass of chemokines and is one of only three human chemokines known to contain an additional, third disulfide bond. The three-dimensional solution structure of I-309 was determined by (1)H nuclear magnetic resonance spectroscopy and dynamic simulated annealing. The structure of I-309, which remains monomeric at high concentrations, was determined on the basis of 978 experimental restraints. The N-terminal region of I-309 was disordered, as has been previously observed for the CC chemokine eotaxin but not others such as MCP-1 and RANTES. This was followed in I-309 by a well-ordered region between residues 13 and 69 that consisted of a 3(10)-helix, a triple-stranded antiparallel beta-sheet, and finally a C-terminal alpha-helix. Root-mean-square deviations of 0.61 and 1.16 were observed for the backbone and heavy atoms, respectively. A comparison of I-309 to eotaxin and HCC-2 revealed a significant structural change in the C-terminal region of the protein. The alpha-helix normally present in chemokines was terminated early and was followed by a short section of extended strand. These changes were a direct result of the additional disulfide bond present in this protein. An examination of the I-309 structure will aid in an understanding of the specificity of this protein with its receptor, CCR8.
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The line below this paragraph, {{ABSTRACT_PUBMED_10821677}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 10821677 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10821677}}
==About this Structure==
==About this Structure==
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1EL0 is a [[Single protein]] structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EL0 OCA].
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1EL0 is a [[Single protein]] structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EL0 OCA].
==Reference==
==Reference==
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[[Category: Sykes, B D.]]
[[Category: Sykes, B D.]]
[[Category: Chemokine fold]]
[[Category: Chemokine fold]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 15:13:48 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 00:55:05 2008''

Revision as of 21:55, 30 June 2008

Image:1el0.png

Template:STRUCTURE 1el0

SOLUTION STRUCTURE OF THE HUMAN CC CHEMOKINE, I-309

Template:ABSTRACT PUBMED 10821677

About this Structure

1EL0 is a Single protein structure. Full experimental information is available from OCA.

Reference

Human CC chemokine I-309, structural consequences of the additional disulfide bond., Keizer DW, Crump MP, Lee TW, Slupsky CM, Clark-Lewis I, Sykes BD, Biochemistry. 2000 May 23;39(20):6053-9. PMID:10821677

Page seeded by OCA on Tue Jul 1 00:55:05 2008

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