TABLE 2.
Properties of the three copper-binding peptides isolated from the spent media of M. trichosporium OB3b
| Peptide | Property
|
||||||||
|---|---|---|---|---|---|---|---|---|---|
| Subunit molecular mass (Da) determined by:
|
N-terminal amino acid sequence | Absorption maxima (nm) | Fluores- cence | EPR signal
|
|||||
| MALDI mass spectroscopy | Electrospray mass spectroscopy | FAB mass spectroscopy | g⊥ | g∥ (G) | |A∥| (G) | ||||
| P1 | NDa | 1,093 | ND | S?MYPGS?M | 204, 222, 275, 333, 356, 400 | − | 2.087 | 2.42 | 128 |
| CBC-L1 | 1,238 | 1,216 | ND | S?MYPGS?M | 204, 222, 275, 333, 356, 400 | − | 2.087 | 2.42 | 128 |
| P3 | ND | 382 | ND | S?M | 194, 217, 260, 354, 390 | + | 2.087 | 2.42 | 128 |
| CBC-L2 | ND | ND | 779 | SPMP?S | 194, 217, 260, 354, 390 | − | 2.073 | 2.324 | 144 |
ND, not determined.