Crystal structures of an Extracytoplasmic Solute Receptor from a TRAP transporter in its open and closed forms reveal a helix-swapped dimer requiring a cation for α-keto acid binding-3 GoninSophie ArnouxPascal PierruBénédicte LavergneJérôme AlonsoBéatrice SabatyMonique PignolDavid 2011 <p><b>Copyright information:</b></p><p>Taken from "Crystal structures of an Extracytoplasmic Solute Receptor from a TRAP transporter in its open and closed forms reveal a helix-swapped dimer requiring a cation for α-keto acid binding"</p><p>BMC Structural Biology 2007;7():11-11.</p><p>Published online 15 Mar 2007</p><p>PMCID:PMC1839085.</p><p></p>