1rcb
From Proteopedia
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'''CRYSTAL STRUCTURE OF HUMAN RECOMBINANT INTERLEUKIN-4 AT 2.25 ANGSTROMS RESOLUTION''' | '''CRYSTAL STRUCTURE OF HUMAN RECOMBINANT INTERLEUKIN-4 AT 2.25 ANGSTROMS RESOLUTION''' | ||
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[[Category: Pavlovsky, A.]] | [[Category: Pavlovsky, A.]] | ||
[[Category: Wlodaver, A.]] | [[Category: Wlodaver, A.]] | ||
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- | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 07:19:43 2008'' | |
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Revision as of 04:19, 3 May 2008
CRYSTAL STRUCTURE OF HUMAN RECOMBINANT INTERLEUKIN-4 AT 2.25 ANGSTROMS RESOLUTION
Overview
The crystal structure of human recombinant interleukin-4 (IL-4) has been solved by multiple isomorphous replacement, and refined to an R factor of 0.218 at 2.25 A resolution. The molecule is a left-handed four-helix bundle with a short stretch of beta sheet. The structure bears close resemblance to other cytokines such as granulocyte-macrophage colony stimulating factor (GM-CSF). Although no sequence similarity of IL-4 to GM-CSF and other related cytokines has been previously postulated, structure-based alignment of IL-4 and GM-CSF revealed that the core of the molecules, including large parts of all four helices and extending over half of the molecule, has 30% sequence identity. This may have identified regions which are not only important to maintain structure, but could also play a role in receptor binding.
About this Structure
1RCB is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Crystal structure of human recombinant interleukin-4 at 2.25 A resolution., Wlodawer A, Pavlovsky A, Gustchina A, FEBS Lett. 1992 Aug 31;309(1):59-64. PMID:1511746 Page seeded by OCA on Sat May 3 07:19:43 2008