Sequence Cluster id id2 desc organism isHeteromeric 1 Cluster1 CharProtDB::CH_091144 RF|NP_446448.2 sodium-dependent proline transporter Rattus norvegicus 1 Cluster1 TCDB::P28573 2.A.22.2.1 Proline:Na+ symporter Rattus norvegicus (Rat) 2 Cluster1 SwissProt::Q64093 S6A20_RAT Sodium- and chloride-dependent transporter XTRP3; Sodium/imino-acid transporter 1; Solute carrier family 6 member 20; Transporter rB21A Rattus norvegicus (Rat) 2 Cluster1 CharProtDB::CH_091132 RF|NP_579830.1 sodium- and chloride-dependent transporter XTRP3 Rattus norvegicus 2 Cluster1 TCDB::Q64093 2.A.22.6.1 Na+/Amino acid transporter 1, SIT1/IMINO (SLC6A20). Transports imino acids such as proline (Km=0.2 mM), pipecolate, and N-methylated amino acids such as MeAIB and sarcosine (Na+-dependent, Cl--stimulated, pH-independent, voltage-dependent) (Li+, but not H+ can substitute for Na+) (Takanaga et al., 2005). It is a 2Na+/1Cl--proline cotransporter Rattus norvegicus (Rat) 3 Cluster1 TCDB::P48065 2.A.22.3.1 Betaine/GABA:Na+ symporter, BGT1. (Substrates include: betaine, GABA, diaminobutyrate, β-alanine, proline, quinidine, dimethylglycine, glycine, and sarcosine with decreasing affinity in that order) Homo sapiens (Human) 4 Cluster1 TCDB::Q99884 2.A.22.2.11 Sodium-dependent proline transporter (Solute carrier family 6 member 7) Homo sapiens