2or8
From Proteopedia
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(New page: 200px<br /><applet load="2or8" size="450" color="white" frame="true" align="right" spinBox="true" caption="2or8, resolution 2.5Å" /> '''Tim-1'''<br /> ==Ove...)
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Revision as of 11:08, 21 November 2007
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Tim-1
Overview
The T cell immunoglobulin mucin (TIM) receptors are involved in the, regulation of immune responses, autoimmunity, and allergy. Structures of, the N-terminal ligand binding domain of the murine mTIM-1 and mTIM-2, receptors revealed an immunoglobulin (Ig) fold, with four Cys residues, bridging a distinctive CC' loop to the GFC beta-sheet. The structures, showed two ligand-recognition modes in the TIM family. The mTIM-1, structure identified a homophilic TIM-TIM adhesion interaction, whereas, the mTIM-2 domain formed a dimer that prevented homophilic binding., Biochemical, mutational, and cell adhesion analyses confirmed the, divergent ligand-binding modes revealed by the structures. Structural, features characteristic of mTIM-1 appear conserved in human TIM-1, which, also mediated homophilic interactions. The extracellular mucin domain, enhanced binding through the Ig domain, modulating TIM receptor functions., These results explain the divergent immune functions described for the, murine receptors and the role of TIM-1 as a cell adhesion receptor in, renal regeneration and cancer.
About this Structure
2OR8 is a Single protein structure of sequence from Mus musculus with ACT as ligand. Full crystallographic information is available from OCA.
Reference
Structures of T Cell Immunoglobulin Mucin Receptors 1 and 2 Reveal Mechanisms for Regulation of Immune Responses by the TIM Receptor Family., Santiago C, Ballesteros A, Tami C, Martinez-Munoz L, Kaplan GG, Casasnovas JM, Immunity. 2007 Mar;26(3):299-310. PMID:17363299
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