| Literature DB >> 7867070 |
J O Lee1, P Rieu, M A Arnaout, R Liddington.
Abstract
We have determined the high resolution crystal structure of the A domain from the alpha chain of integrin CR3. The domain adopts a classic alpha/beta "Rossmann" fold and contains an unusual Mg2+ coordination site at its surface. One of the coordinating ligands is the glutamate side chain from another A domain molecule. We suggest that this site represents a general metal ion-dependent adhesion site (MIDAS) for binding protein ligands. We further propose that the beta subunits of integrins contain a MIDAS motif within a modified A domain. Our crystal structure will allow reliable models to be built for other members of the A domain superfamily and should facilitate development of novel adhesion modulatory drugs.Entities:
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Year: 1995 PMID: 7867070 DOI: 10.1016/0092-8674(95)90517-0
Source DB: PubMed Journal: Cell ISSN: 0092-8674 Impact factor: 41.582