K. Moriishi et al., SEQUENCE-ANALYSIS OF THE ACTA GENE OF LISTERIA-MONOCYTOGENES ISOLATEDFROM HUMAN, Microbiology and immunology, 42(2), 1998, pp. 129-132
The region encoding proline-rich units of actA genes was amplified fro
m 24 strains of Listeria monocytogenes using polymerase chain reaction
(PCR), PCR products of 13 strains showed the expected size of 623 bp,
whereas those of 11 strains showed a short size of 518 bp, The shorte
ning of these PCR products resulted from the deletion of one proline-r
ich unit, These results indicate that ActA proteins are divided into a
t least two different types which are unrelated to bacterial serotypes
.