Polysialic acid transport ATP-binding protein KpsT KPST1_ECOLX Putative ATP-binding protein, and an energy coupling component for the transport of polysialic acid across the cytoplasmic membrane. MIKIENLTKSYRTPTGRHYVFKNLNIIFPKGYNIALIGQNGAGKSTLLRIIGGIDRPDSGNIITEHKISWPVGLAGGFQGSLTGRENVKFVARLYAKRDELNERVDFVEEFSELGKYFDMPIKTYSSGMRSRLAFGLSMAFKFDYYLIDEITAVGDAKFKKKCSDIFDKIREKSHLIMVSHSERALKEYCDVAIYLNKEGQGKFYKNVTEAIADYKKDL kpsT 219