>tr|A0A379Z0W0|A0A379Z0W0_SHIFL PTS system L-ascorbate-specific transporter subunit IIB OS=Shigella flexneri GN=ulaB MTVRILAVCGNGQGSSMIMKMKVDQFLTQSNIDHTVNSCAVGEYKSELSGADIIIASTHI AGEITVTGNKYVVGVRNMLSPADFGPKLLEVIKAHFPQDVK