Ubiquitin (S20C) bears a single amino acid substitution that replaces serine 20 with a cysteine. This substitution has no effect on Ubs structure and allows label Ub with other groups, such as biotin or fluorescent groups that are conjugated on a thiol
Molecular Weight:
8.5 kDa
Buffer:
20 mM Tris, pH 7.6 at 4 C, 150 mM NaCl, 5 mM TCEP and 10% glycerol
Source:
E. coli recombinant
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