Protein
Sialic acid-binding periplasmic protein SiaP
Organism
Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)
Function
Part of the tripartite ATP-independent periplasmic (TRAP) transport system SiaPQM that catalyzes unidirectional Na(+)-dependent sialic acid uptake. Binds the common sialic acid N-acetylneuraminic acid (Neu5Ac) with a high affinity.
Similarity
Belongs to the bacterial solute-binding protein 7 family.
Sequence
MKTINKITIAILTLSAAASVNAATTLKMGMQASVGSVEYNSAKMLADTLEEMSQGEIKLALYPSAQLGDDRAMLQQLTLGDLDITYAEFGRMGLWIPRAEAVMLPYVAKDFDHLRRMFESDFGQGVRDEMLQKFNWRALDTWYNGTRETTSNRPLNSIEDFKGLKLRVPNAKQNLNYAKLSGASPTPMSFSEVYLALQTNAVDGQENPLPTIKTMKFYEVQKNLAMTHHIVNDQMVIISESTWQKLSDTDKDIIQKAVQKVGDAHTQTVKTQEAELVSFFKSEGINVTYPDLEPFREAMQPLYKEFDSNIGQPIVSKLAAM