>cd03300 ABC_PotA_N PotA is an ABC-type transporter and the ATPase component of the spermidine/putrescine-preferential uptake system consisting of PotA, -B, -C, and -D. PotA has two domains with the N-terminal domain containing the ATPase activity and the residues required for homodimerization with PotA and heterdimerization with PotB. ABC transporters are a large family of proteins involved in the transport of a wide variety of different compounds, like sugars, ions, peptides, and more complex organic molecules. The nucleotide binding domain shows the highest similarity between all members of the family. 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.

Probab=92.74  E-value=0.13  Score=31.00  Aligned_cols=33  Identities=21%  Similarity=0.247  Sum_probs=24.9

Q ss_pred             CCCCEEEEECCCCCCHHHHHHHHHHHC---CCEEEE
Q ss_conf             898499998798733449999999881---987975
Q 537021.9.peg.8    8 THTKAIFISGPTASGKSLCAVNLAHKF---NGAIIN   40 (133)
Q Consensus         8 ~~~~ii~I~GpTasGKT~lai~LA~~~---~~~IIs   40 (133)
T Consensus        24 ~~Ge~~~iiGpSGsGKSTllr~i~Gl~~p~~G~I~~   59 (232)
T cd03300          24 KEGEFFTLLGPSGCGKTTLLRLIAGFETPTSGEILL   59 (232)
T ss_pred             CCCCEEEEECCCCCHHHHHHHHHHCCCCCCCEEEEE
T ss_conf             799899999999983999999997799998539999