Primary structure of the CFA1 fimbrial protein from human enterotoxigenic Escherichia coli strains.
The complete amino acid sequence of the structural protein that constitutes the subunit of the CFA1 fimbria has been elucidated. The protein was fragmented by cyanogen bromide cleavage, and by enzymatic cleavage with trypsin. Secondary cleavage of the resulting peptides was performed with chymotrypsin, Staphylococcus aureus protease, and thermolysin. Sequential Edman degradation was performed manually. The CFA1 protein comprises 147 amino acid residues, with a molecular weight of 15058.
D000595:Amino Acid Sequence; D000942:Antigens, Bacterial / Q000302:isolation & purification*; D003488:Cyanogen Bromide; D003967:Diarrhea / Q000382:microbiology; D004926:Escherichia coli / Q000032:analysis* / Q000302:isolation & purification; D036781:Fimbriae Proteins; D010861:Fimbriae, Bacterial / Q000032:analysis*; D006801:Humans; D010446:Peptide Fragments / Q000032:analysis
D000942:Antigens, Bacterial; D010446:Peptide Fragments; C022924:colonization factor antigens; D036781:Fimbriae Proteins; D003488:Cyanogen Bromide