Unrooted phylogenetic tree of ANT(6)-If and other function-characterized ANTs. ANT(6)-If (this work) was on the branch of ANT(6) family cluster located at the top-left corner. The ANT(6) cluster was highlighted with a red circle and ANT(6)-If was indicated by a blue dot. Accession numbers of the ANTs were AadK (CAB14620.1), ANT(6)-Ia (AHE40557.1), AAD(6) (AAU10334.1), ANT(6)-Ib (CBH51824.1), AadS (AAA27459.1), ANT(4′)-Ia (AAO83986.1), ANT(4′)-Ib (ADA62098.1), ANT(4′)-IIa (AAA25717.1), ANT (4′)-IIb (AAM76670.1), ANT(2″)-Ia (AAC64365.1), AadA27 (CTQ57092.1), ANT (3″)-IIc (ENU37733.1), ANT(3″)-IIb (ENU91137.1), ANT(3″)-IId (QUX80205.1), ANT(3″)-Ib (QEQ43477.1), ANT(9)-Ia (CAA26428.1), and Spd (AGW81558.1). Those ANTs in the grey circle were not labeled due to the high density. They included AadA (AAO49597.1), AadA10 (AAL36430.1), AadA11 (AAV32840.1), AadA12 (ACJ47200.1), AadA13 (ABW91178.1), AadA14 (CAI57696.1), AadA15 (ABD58917.1), AadA16 (ACF17980.1), AadA17 (ACK43806.1), AadA2 (AAF27727.1), AadA21 (AAN87151.1), AadA22 (CAK12750.1), AadA23 (CAH10847.1), AadA24 (ABG72894.1), AadA25 (AET15272.1), AadA3 (AAC14728.1), AadA4 (AAN34365.1), AadA5 (AAF17880.1), AadA6 (CAJ32504.1), AadA6/AadA10 (CAJ32491.1), AadA7 (BAD00739.1), AadA8 (AAN41439.1), AadA8b (CAJ13568.1), AadA9 (ABG49324.1), AadA33 (UVE15953.1), AadA36 (UVE15954.1), ANT(3″)-IIa (CAA26199.1), and ANT(3″)-Ii-AAC(6′)-Iid (AAL51021.2).