Reaction: (1) ATP + H2O + L-methionine-[methionine-binding protein][side 1] = ADP + phosphate + L-methionine[side 2] + [methionine-binding protein][side 1]
(2) ATP + H2O + D-methionine-[methionine-binding protein][side 1] = ADP + phosphate + D-methionine[side 2] + [methionine-binding protein][side 1]
Other name(s): methionine transporting ATPase; methionine ABC transporter; metNIQ (gene names)
Systematic name: ATP phosphohydrolase (ABC-type, methionine-importing)
Comments: ABC-type (ATP-binding cassette-type) transporter, characterized by the presence of two similar ATP-binding domains/proteins and two integral membrane domains/proteins. A bacterial enzyme that interacts with an extracytoplasmic substrate binding protein and functions to import methionine. The enzyme from Escherichia coli K-12 mediates the high affinity transport of both L- and D-methionine, as well as methionine-S-oxide and N-acetyl-DL-methionine.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number:
References:
1. Merlin, C., Gardiner, G., Durand, S. and Masters, M. The Escherichia coli metD locus encodes an ABC transporter which includes Abc (MetN), YaeE (MetI), and YaeC (MetQ). J. Bacteriol. 184 (2002) 5513-5517. [PMID: 12218041]
2. Zhang, Z., Feige, J.N., Chang, A.B., Anderson, I.J., Brodianski, V.M., Vitreschak, A.G., Gelfand, M.S. and Saier, M.H., Jr. A transporter of Escherichia coli specific for L- and D-methionine is the prototype for a new family within the ABC superfamily. Arch. Microbiol. 180 (2003) 88-100. [PMID: 12819857]
3. Moussatova, A., Kandt, C., O'Mara, M.L. and Tieleman, D.P. ATP-binding cassette transporters in Escherichia coli. Biochim. Biophys. Acta 1778 (2008) 1757-1771. [PMID: 18634750]