The nucleotide sequence of a putative membrane transport gene from Clostridium perfringens.
A gene from Clostridium perfringens encoding a highly hydrophobic polypeptide of M(r) = 30,698 was cloned and sequenced. The polypeptide showed similarities with the inner membrane proteins of binding protein-dependent transport systems of the gram negative enterobacteria. The sequence homology to the UgpE and MalG proteins of Escherichia coli was 27.6%, or 60.4 and 52.2%, respectively, taking into account the conservative amino acid changes. The polypeptide contained the EAA---G---------(I/V)-LP motif of the gram negative transport proteins. This motif may thus be very old, as clostridia and E. coli separated some 1.5 x 10(9) years ago. The similarities suggest a common evolutionary origin of these genes.
Holck
A L
AL
MATFORSK, Norwegian Food Research Institute, Aas.
Blom
H
H
D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D005075:Biological Evolution; D001693:Biological Transport, Active / Q000235:genetics; D003016:Clostridium perfringens / Q000235:genetics*; D004269:DNA, Bacterial / Q000235:genetics; D004926:Escherichia coli / Q000235:genetics; D005798:Genes, Bacterial; D008565:Membrane Proteins / Q000235:genetics*; D008969:Molecular Sequence Data; D017386:Sequence Homology, Amino Acid; D013045:Species Specificity
D001426:Bacterial Proteins; D004269:DNA, Bacterial; D008565:Membrane Proteins