ATP-binding cassette domain of methionine transporter
MetN (also known as YusC) is an ABC-type transporter encoded by metN of the metNPQ operon in Bacillus subtilis that is involved in methionine transport. Other members of this system include the MetP permease and the MetQ substrate binding protein. ABC transporters are a subset of nucleotide hydrolases that contain a signature motif, Q-loop, and H-loop/switch region, in addition to, the Walker A motif/P-loop and Walker B motif commonly found in a number of ATP- and GTP-binding and hydrolyzing proteins.
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