TABLE 1.
GBPs from S. sobrinus and S. mutans
| Protein | Apparent molecular mass (kDa) by:
|
||
|---|---|---|---|
| Previously reported SDS-PAGE (reference) | Data from this study
|
||
| SDS-PAGE | Mass spectroscopy | ||
| S. sobrinusa | |||
| GBP-2 | 87 (19) | 82 | 71 |
| GBP-3 | —b | 68 | 52 |
| GBP-4 | 60 (8) | 58 | NDc |
| GBP-5 | — | 49 | 41 |
| S. mutans | |||
| GBP-A | 74 (10) | 72 | 59 |
| GBP-B | 59 (13) | 58 | 42 |
| GBP-C | 64 (11) | ND | ND |
a The numbering for S. sobrinus GBPs in this table begins at GBP-2 because Landale and McCabe (6) previously designated a small GBP (a homodimer of 7.5 kDa) as GBP-1. The selection of SDS-polyacrylamide gel concentration precluded detection of this smaller GBP in this study.
b —, not previously reported.
c ND, not done.