Question: What is the taxon to which putative proline-specific permease    NRG857_01885 belongs to ?
Answer: Escherichia coli O83:H1 str. NRG 857C
Answer sentence: escherichia coli o83:h1 str. nrg 857c is the taxon to which putative proline-specific permease nrg857_01885 belongs.