2i1b: Difference between revisions

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[[Image:2i1b.jpg|left|200px]]
{{Seed}}
[[Image:2i1b.png|left|200px]]


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{{STRUCTURE_2i1b|  PDB=2i1b  |  SCENE=  }}  
{{STRUCTURE_2i1b|  PDB=2i1b  |  SCENE=  }}  


'''CRYSTALLOGRAPHIC REFINEMENT OF INTERLEUKIN-1 BETA AT 2.0 ANGSTROMS RESOLUTION'''
===CRYSTALLOGRAPHIC REFINEMENT OF INTERLEUKIN-1 BETA AT 2.0 ANGSTROMS RESOLUTION===




==Overview==
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The structure of human recombinant interleukin 1 beta (IL-1 beta) has been refined by a restrained least-squares method to a crystallographic R factor of 17.2% to 2.0 A resolution. One-hundred sixty-eight solvent molecules have been located, and isotropic temperature factors for each atom have been refined. The overall structure is composed of 12 beta-strands that can best be described as forming the four triangular faces of a tetrahedron with hydrogen bonding resembling normal antiparallel beta-sheets only at the vertices. The interior of this tetrahedron is filled by hydrophobic side chains. Analysis of sequence alignments with IL-1 beta from other mammalian species shows the interior to be very well conserved with the exterior residues markedly less so. There does not appear to be a clustering of invariant amino acid side chains on the surface of the molecule, suggesting an area of interaction with the IL-1 receptor. Comparison of the IL-1 beta structure with IL-1 alpha sequences indicates that IL-1 alpha probably has a similar overall folding as IL-1 beta but binds to the receptor in a different fashion. The three-dimensional structure of the IL-1 beta is analyzed in light of what has been suggested by previously published work on mutants and fragments of the molecule.
The line below this paragraph, {{ABSTRACT_PUBMED_2602367}}, adds the Publication Abstract to the page
(as it appears on PubMed at http://www.pubmed.gov), where 2602367 is the PubMed ID number.
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{{ABSTRACT_PUBMED_2602367}}


==About this Structure==
==About this Structure==
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[[Category: Schaer, H P.]]
[[Category: Schaer, H P.]]
[[Category: Cytokine]]
[[Category: Cytokine]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 06:57:34 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 04:29:45 2008''

Revision as of 01:29, 28 July 2008

File:2i1b.png

Template:STRUCTURE 2i1b

CRYSTALLOGRAPHIC REFINEMENT OF INTERLEUKIN-1 BETA AT 2.0 ANGSTROMS RESOLUTION

Template:ABSTRACT PUBMED 2602367

About this Structure

2I1B is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Crystallographic refinement of interleukin 1 beta at 2.0 A resolution., Priestle JP, Schar HP, Grutter MG, Proc Natl Acad Sci U S A. 1989 Dec;86(24):9667-71. PMID:2602367

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