ID 7.4.2.1 DE ABC-type polar-amino-acid transporter. AN histidine permease. AN polar-amino-acid-transporting ATPase. CA a polar amino acid(out) + ATP + H2O = a polar amino acid(in) + ADP + H(+) CA + phosphate. CC -!- An ATP-binding cassette (ABC) type transporter, characterized by the CC presence of two similar ATP-binding domains/proteins and two integral CC membrane domains/proteins. CC -!- The enzyme, found in bacteria, interacts with an extracytoplasmic CC substrate binding protein and mediates the import of polar amino CC acids. CC -!- This entry comprises bacterial enzymes that import His, Arg, Lys, CC Glu, Gln, Asp, ornithine, octopine and nopaline. CC -!- Formerly EC 3.6.3.21. DR Q8NQU4, ARGV_CORGL ; P0AAF8, ARTP_ECO57 ; P0AAF7, ARTP_ECOL6 ; DR P0AAF6, ARTP_ECOLI ; P45092, ARTP_HAEIN ; P0AAF9, ARTP_SHIFL ; DR P0AAG4, GLTL_ECO57 ; P0AAG3, GLTL_ECOLI ; Q8RQL7, GLUA_COREF ; DR P48243, GLUA_CORGL ; P07109, HISP_ECOLI ; Q9HZS1, HISP_PSEAE ; DR P02915, HISP_SALTY ; //