Cloned (Comment) | Organism |
---|---|
human pro-cathepsin E is expressed in Escherichia coli in the form of inclusion bodies. The protein is dissolved in 8 M guanidinium chloride and refolded by dilution/dialysis. The main side products in the refolding reaction were soluble, high molecular mass protein complexes linked most likely due to formation of wrong intra- and intermolecular disulfide bonds. Pro-cathepsin E auto-activates at pH 3.5. The major part of the high molecular mass complexes is easily removed during the auto-activation process as these protein components precipitate during the pH shifts | Homo sapiens |
Crystallization (Comment) | Organism |
---|---|
sitting drop vapor diffusion, crystal structure of an activation intermediate of cathepsin E at 2.35 A resolution. The overall structure follows the general fold of aspartic proteases of the A1 family, and the intermediate shares many features with the intermediate 2 on the proposed activation pathway of aspartic proteases like pepsin C and cathepsin D. The pro-sequence is cleaved from the protease and remains stably associated with the mature enzyme by forming the outermost sixth strand of the interdomain beta-sheet | Homo sapiens |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | - |
- |
- |
Purification (Comment) | Organism |
---|---|
recombinant | Homo sapiens |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
DED-[5-[(2-aminoethyl)amino]naphthalene-1-sulfonyl]-KPILFFRLGK-[4-(4-dimethylaminophenylazo)benzoic acid] + H2O | - |
Homo sapiens | ? | - |
? |