Crystal structure of a caricain D158E mutant in complex with E-64.Katerelos, N.A., Taylor, M.A., Scott, M., Goodenough, P.W., Pickersgill, R.W.
(1996) FEBS Lett. 392: 35-39
- PubMed: 8769310
- PubMed Abstract:
- An Unequivocal Example of Cysteine Proteinase Activity Affected by Multiple Electrostatic Interactions
Taylor, M.A.,Baker, K.C.,Connerton, I.F.,Cummings, N.J.,Harris, G.W.,Henderson, I.M.,Jones, S.T.,Pickersgill, R.W.,Sumner, I.G.,Warwicker, J.,al., et
(1994) Protein Eng. 7: 1267
- Nucleotide Sequence and Expression in Escherichia Coli of Cdnas Encoding Papaya Proteinase Omega from Carica Papaya
Revell, D.F.,Cummings, N.J.,Baker, K.C.,Collins, M.E.,Taylor, M.A.,Sumner, I.G.,Pickersgill, R.W.,Connerton, I.F.,Goodenough, P.W.
(1993) Gene 127: 221
- Rapid Kinetics Studies and Structural Determination of a Cysteine Proteinase Mutant Implies that Residue Asp 158 in Caricain Has a Major Effect Upon the Ability of the Active Site Histidine to Protonate a Dipyridyl Probe
Katerelos, A.,Goodenough, P.W.
() TO BE PUBLISHED --: --
- Active Papain Renatured and Processed from Insoluble Recombinant Propapain Expressed in Escherichia Coli
Taylor, M.A.,Pratt, K.A.,Revell, D.F.,Baker, K.C.,Sumner, I.G.,Goodenough, P.W.
(1992) Protein Eng. 5: 455
The structure of the D158E mutant of caricain (previously known as papaya protease omega) in complex with E-64 has been determined at 2.0 A resolution (overall R factor 19.3%). The structure reveals that the substituted glutamate makes the same patte ...
The structure of the D158E mutant of caricain (previously known as papaya protease omega) in complex with E-64 has been determined at 2.0 A resolution (overall R factor 19.3%). The structure reveals that the substituted glutamate makes the same pattern of hydrogen bonds as the aspartate in native caricain. This was not anticipated since in the native structure there is insufficient room to accommodate the glutamate side chain. The glutamate is accommodated in the mutant by a local expansion of the structure demonstrating that small structural changes are responsible for the change in activity.
Institute of Food Research, Reading Laboratory, UK.