Table 1.

Interacting amino acid residues at the substrate/inhibitor binding site of SLC22A2.

SLC22A2 variant	Substrate/inhibitor	Phe 33	Tyr 37	Phe 160	Lys 215	Trp 218	Tyr 241	Gln 242	Tyr 245	Leu 249	Tyr 353	Asn 354	Trp 355	Ser 358	Ser 359	Tyr 362	Glu 387	Ile 443	Ala 446	Tyr 447	Glu 448	Val 450	Cys 451	Cys 474	Asp 475	Gly 478	Pro 482	Docking score
270A	Metformin								+	+				+		+				+								5.18
270A	Agmatine	+				+		+	+					+						+	+	+	+					3.818
270A	Ifosfamide	+				+		+					+	+	+				+					+				5.79
270A	Paraquat					+		+						+	+				+	+	+			+	+			4.007
270A	Trimethoprim	+			+	+		+	+					+					+	+		+	+		+			7.581
270A	Cimetidine					+			+			+	+	+		+				+	+		+					5.733
270A	Creatinine								+					+		+												3.911
270A	Ranitidine		+	+					+				+	+	+	+	+	+		+					+	+	+	5.591
270S	Metformin	+				+			+		+									+								nan*
270S	Cimetidine	+				+	+	+	+		+									+	+		+	+				4.385
270S	Creatinine	+				+			+		+									+								0.619
270S	Ranitidine	+				+			+		+	+		+						+			+					4.588

^*nan = not-a-number.