Table 1 Calculated and determined masses of PSI subunits from T. elongatus.
Subunit | Calculated mass (Da) | Determined mass (Da) | Difference | Modification |
|---|---|---|---|---|
PsaA | 84,872 | Not detected | – | – |
PsaB | 83,044 | Not detected | – | – |
PsaC | 8800.1 | 8667.37 | −132.73 | N-methionine deleted |
PsaD | 15370.5 | 15237.49 | −133.01 | N-methionine deleted |
PsaD* | 7685.25 | 7618.86 | −66.39 | N-methionine deleted |
PsaE | 9388.5 | 8255.43 | −133.07 | N-methionine deleted |
PsaF | 15113.4 | 15108.52 | −4.88 | - |
PsaI | 4166 | 4332.97 | +35.97 | Acetyl group added |
PsaJ | 4755.7 | 4793.64 | +26.94 | Formyl group added |
PsaK | 8480 | 8065.36 | −414.64 | -(N-MVLA) |
PsaL | 16251 | 16.114.90 | −131.10 | N-methionine deleted |
PsaM | 3424.1 | 3423.10 | −1.00 | – |
PsaX | 4100.9 | 3968.79 | −132.11 | N-methionine deleted |
