Nomenclature	SNAT1	SNAT2	SNAT4
Systematic nomenclature	SLC38A1	SLC38A2	SLC38A4
Common abbreviation	SNAT1	SNAT2	SNAT4
HGNC, UniProt	SLC38A1, Q9H2H9	SLC38A2, Q96QD8	SLC38A4, Q969I6
Endogenous substrates	L-alanine > L-serine, L-glutamine, L-asparagine, L-histidine, L-cysteine, L-methionine > glycine, L-threonine, L-proline, L-tyrosine, L-valine 387	L-alanine, L-methionine > L-asparagine, L-glutamine, L-serine, L-proline, glycine > L-threonine, L-leucine, L-phenylalanine 391	L-histidine > L-arginine, L-alanine, L-asparagine, L-lysine > glycine, L-glutamine, L-serine, L-proline, L-leucine, L-phenylalanine 390
Substrates	MeAIB	MeAIB	MeAIB
Radioligands (Kd)	[14C]alanine, [3H]alanine	[14C]alanine, [3H]alanine	[14C]alanine, [14C]glycine, [3H]alanine, [3H]glycine
Stoichiometry	1 Na+: 1 amino acid (in) 387	1 Na+: 1 amino acid (in) 391	1 Na+: 1 neutral amino acid (in) 390
Comment	–	–	Transport of cationic amino acids by SNAT4 was sodium-independent 390