Na(+)/glucose cotransporter SGLT1 and related proteins; solute binding domain
This subfamily includes the solute-binding domain of SGLT proteins that cotransport Na+ with various solutes. Its members include: the human glucose (SGLT1, -2, -4, -5 ), chiro-inositol (SGLT5), and myo-inositol (SMIT) cotransporters. It also includes human SGLT3 which has been characterized as a glucose sensor and not a transporter. It belongs to the solute carrier 5 (SLC5) transporter family.
Comment:based on the structures of Vibrio parahaemolyticus vSGLT (SLC5), Aquifex aeolicus LeuT (SLC6), and the NCS1, Microbacterium liquefaciens Mhp1, bound with Na+, functional studies of Escherichia coli PutP (SLC5) and mammalian NIS (SLC5), and mutational analysis of vSGLT
Comment:one of two Na+ binding sites in Aquifex aeolicus LeuT, where it is referred to as the Na binding site 2
Jiyao W et al.(2023). "The conserved domain database in 2023.",