Figure 2
A Tris–glycine 4–20% gradient gel (Coomassie staining) of the protein preparation (lane H). Bands H1–H7 were excised for peptide mass fingerprinting. Band H4 was identified as M. fumariolicum SolV DapA (MfumV2_0415), bands H1 and H3 as the large and small subunits of the [NiFe] hydrogenase, respectively (MfumV2_0979 and MfumV2_0978), and band H2 as a degradation product of the large subunit. Band H5 was identified as elongation factor Ts (MfumV2_2094) and band H7 as the ClpB chaperone (MfumV2_0146). No match was found for band H6. Lane MW contains a molecular-weight ladder, with the molecular masses indicated in kDa on the left. |