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Zymographic Characterization of Bacteriolytic Enzymes Produced by Oral Streptococci
Author(s) -
Yoshimura Goh,
Komatsuzawa Hitoshi,
Kajimura Junko,
Fujiwara Tamaki,
Ohara Masaru,
Kozai Katsuyuki,
Sugai Motoyuki
Publication year - 2004
Publication title -
microbiology and immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0385-5600
DOI - 10.1111/j.1348-0421.2004.tb03537.x
Subject(s) - streptococcus sobrinus , microbiology and biotechnology , enzyme , biology , bacteria , streptococcus mutans , streptococcus salivarius , streptococcus mitis , biochemistry , streptococcus , genetics
Zymographic analysis was performed to know the bacteriolytic enzyme profiles of 4% SDS extracts of oral streptococci, Streptococcus mutans, S. sobrinus, S. sanguis, S. mitis and S. salivarius . We investigated the five strains in each species and found that the profile was very similar among strains of the same species except for S. salivarius (the profile was classified into two types). On the other hand, the profile was considerably different among species. Two major bacteriolytic enzymes of S. mutans showing molecular mass of 80 and 100 kDa were found using SDS‐boiled S. mutans or S. sobrinus cells as substrate. These bacteriolytic activities were less apparent in the gel containing S. mitis or S. salivarius , and also not detectable in the gel containing S. sanguis. S. sobrinus extract showed only one bacteriolytic band (78 kDa) as strong activity using S. sobrinus cells as substrate. S. sanguis extract showed no bacteriolytic bands using any streptococcal cells. Extracts of either S. mitis or S. salivarius showed weak activity by using respective strains as substrate.