Table 2 Summary of Zn2+-bound peptides identified from ETD/PTR, together with experimental and theoretical masses for the respective parent fragment ions.
Assignment of fragment | Experimental [M+H]1+ | Theoretical [M+H]1+ | ∆mass (Da) | Experimental [M-H+Zn]1+ | Theoretical [M-H+Zn]1+ | ∆mass (Da) |
|---|---|---|---|---|---|---|
z13* | 1648.06 | 1647.75 | +0.31 | 1711.06 | 1711.56 | −0.50 |
c20 | 2479.50 | 2479.15 | +0.35 | 2542.50 | 2542.65 | −0.15 |
c26 | 3187.68 | 3187.46 | +0.22 | 3250.62 | 3250.96 | −0.34 |
c27 | 3324.82 | 3324.52 | +0.30 | 3388.68 | 3388.02 | +0.66 |
c28 | 3439.82 | 3439.54 | +0.28 | 3502.76 | 3503.04 | −0.28 |
z28* | 3410.76 | 3410.52 | +0.24 | 3473.76 | 3474.02 | −0.26 |
z29* | 3547.82 | 3548.58 | −0.76 | 3611.62 | 3612.08 | −0.46 |
z30* | 3676.76 | 3676.68 | +0.08 | 3739.62 | 3740.18 | −0.56 |
z31* | 3812.76 | 3812.74 | +0.02 | 3876.82 | 3876.24 | +0.58 |
c31 | 3833.76 | 3833.75 | +0.01 | 3986.82 | 3897.25 | +0.57 |
z33* | 4047.94 | 4047.85 | +0.09 | 4110.82 | 4111.35 | −0.47 |
z34* | 4160.94 | 4160.94 | 0.00 | 4223.82 | 4224.44 | +0.62 |
c34 | 4195.94 | 4195.92 | +0.02 | 4258.94 | 4259.42 | −0.48 |
