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Representation of a prototypical αI-domain-containing integrin heterodimer. Nine out of the 18 integrin α chains contains an αI domain, as shown, but all integrins contain a βI domain in the β subunit. a Representation of the domains in αI domain-containing integrin (stars divalent cation-binding sites. b Representation of arrangement of domains in αI-domain-containing integrin kying in a membrane
