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2ila

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[[Image:2ila.gif|left|200px]]
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{{STRUCTURE_2ila| PDB=2ila | SCENE= }}
{{STRUCTURE_2ila| PDB=2ila | SCENE= }}
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'''STRUCTURE OF INTERLEUKIN 1ALPHA AT 2.7-ANGSTROMS RESOLUTION'''
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===STRUCTURE OF INTERLEUKIN 1ALPHA AT 2.7-ANGSTROMS RESOLUTION===
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==Overview==
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The interleukin 1 (IL-1) family of proteins has a central role in modulating immune and inflammatory responses. Two major IL-1 proteins, designated alpha (IL-1 alpha) and beta (IL-1 beta), are produced by activated macrophages and other cell types. In an effort to understand the similarities and differences in the physicochemical and functional properties of these two proteins, a program was initiated to determine their structures. Crystals of IL-1 alpha were grown, and the three-dimensional structure at 2.7-A resolution was solved. The technique of multiple-wavelength anomalous dispersion (MAD) with the selenomethionine form of IL-1 alpha was utilized in combination with a single mercury derivative to provide the starting phases. Partial refinement of the IL-1 alpha model has been performed as well. The overall structure is composed of 14 beta-strands and a 3(10) helix. The core of this structure is a capped beta-barrell that possesses 3-fold symmetry and displays a topology similar to that observed for IL-1 beta [Priestle, J. P., et al. (1988) EMBO J. 7, 339-343] and soybean trypsin inhibitor (STI) [McLachlan, A. D. (1979) J. Mol. Biol. 133, 557-563]. In this paper, the overall structure of IL-1 alpha and the nature and fidelity of the internal 3-fold symmetry are discussed. Comparisons with IL-1 beta and STI are made within these contexts.
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(as it appears on PubMed at http://www.pubmed.gov), where 2346741 is the PubMed ID number.
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{{ABSTRACT_PUBMED_2346741}}
==About this Structure==
==About this Structure==
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[[Category: Hatada, M H.]]
[[Category: Hatada, M H.]]
[[Category: Cytokine]]
[[Category: Cytokine]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 07:37:38 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 14:46:28 2008''

Revision as of 11:46, 29 July 2008

Image:2ila.png

Template:STRUCTURE 2ila

STRUCTURE OF INTERLEUKIN 1ALPHA AT 2.7-ANGSTROMS RESOLUTION

Template:ABSTRACT PUBMED 2346741

About this Structure

2ILA is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure of interleukin 1 alpha at 2.7-A resolution., Graves BJ, Hatada MH, Hendrickson WA, Miller JK, Madison VS, Satow Y, Biochemistry. 1990 Mar 20;29(11):2679-84. PMID:2346741

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