CD11A I-DOMAIN WITH BOUND MN++
[ITAL_HUMAN] Integrin alpha-L/beta-2 is a receptor for ICAM1, ICAM2, ICAM3 and ICAM4. It is involved in a variety of immune phenomena including leukocyte-endothelial cell interaction, cytotoxic T-cell mediated killing, and antibody dependent killing by granulocytes and monocytes.
Publication Abstract from PubMed
We report the 1.8-A crystal structure of the CD11a I-domain with bound manganese ion. The CD11a I-domain contains binding sites for intercellular adhesion molecules 1 and 3 and can exist in both low- and high-affinity states. The metal-bound form reported here is likely to represent a high-affinity state. The CD11a I-domain structure reveals a strained hydrophobic ridge adjacent to the bound metal ion that may serve as a ligand-binding surface and is likely to rearrange in the absence of bound metal ion. The CD11a I-domain is homologous to domains found in von Willebrand factor, and mapping of mutations found in types 2a and 2b von Willebrand disease onto this structure allows consideration of the molecular basis of these forms of the disease.
Crystal structure of the I-domain from the CD11a/CD18 (LFA-1, alpha L beta 2) integrin.,Qu A, Leahy DJ Proc Natl Acad Sci U S A. 1995 Oct 24;92(22):10277-81. PMID:7479767
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.