title: Complete nucleotide and deduced protein sequence of CMP-NeuAc: poly-alpha-2,8 sialosyl sialyltransferase of Escherichia coli K1.
abstract: Poly-alpha-2,8 N-acetylneuraminic acid (polySia) is an important virulence factor in infections caused by Escherichia coli K1 and Neisseria meningitidis B. In E. coli K1 a membranous CMP-NeuAc: poly-alpha-2,8 sialosyl sialyltransferase (polysialyltransferase) complex catalyses the synthesis of linear polySia chains. The complex also elongates sialyl oligomers that serve as exogenous acceptors. The gene encoding a polysialyltransferase of E. coli has been identified by subcloning and DNA sequence analysis. The subcloned DNA fragment codes for a polypeptide with a molecular mass of 47 kDa catalysing the in vitro synthesis of polySia by elongation of exogenous acceptors.
authors.affiliation: Institute für Medizinische Mikrobiologie, Medizinische Hochschule Hannover, FRG.
authors.forename: C
authors.initials: C
authors.lastname: Weisgerber
authors.forename: A
authors.initials: A
authors.lastname: Hansen
authors.forename: M
authors.initials: M
authors.lastname: Frosch
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002462:Cell Membrane / Q000378:metabolism; D003001:Cloning, Molecular; D003569:Cytidine Monophosphate N-Acetylneuraminic Acid / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology / Q000235:genetics*; D008969:Molecular Sequence Data; D009345:Neisseria meningitidis / Q000235:genetics; D011487:Protein Conformation; D015183:Restriction Mapping; D012689:Sequence Homology, Nucleic Acid; D012799:Sialyltransferases / Q000235:genetics*; D013379:Substrate Specificity
chemical_list: D003569:Cytidine Monophosphate N-Acetylneuraminic Acid; D012799:Sialyltransferases