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. Author manuscript; available in PMC: 2008 May 13.
Published in final edited form as: FEBS Lett. 2008 Mar 10;582(7):1163–1167. doi: 10.1016/j.febslet.2008.02.078

Table 1.

The molecular weight of the proteins used in the expressed protein ligation experiments

Protein Calculated mass (Da) Observed mass (Da)
Csk CKinase 30296 30308
MBP (intein fusion) 42243 42242
MBP (kinase fusion) 43443 43410
Intein-CBD 27856 27840
MBP-intein-CBD 70082 70150
MBP-Ckinase ligation 72521 72565