Aquifex aeolicus LeuT and related proteins; solute binding domain
LeuT is a bacterial amino acid transporter with specificity for the hydrophobic amino acids glycine, alanine, methionine, and leucine. This subgroup belongs to the solute carrier 6 (SLC6) transporter family; LeuT has been used as a structural template for understanding fundamental aspects of SLC6 function. It has an arrangement of 12 transmembrane helices (TMs), which appears to be a common motif for eukaryotic and some prokaryotic and archaeal SLC6s: an inverted topology repeat: TMs1-5 and TMs6-10, and TMs11-12.
Comment:One of two Na+ binding sites in Aquifex aeolicus LeuT. It binds the Na+ ion designated Na2, and appears conserved in Vibrio parahaemolyticus vSGLT and other SLC5 proteins
Structure:2A65: Aquifex aeolicus LeuT binds the Na ion designated Na2.
Jiyao W et al.(2023). "The conserved domain database in 2023.",