Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 543602
Title (14-38, 30-51) Double-disulphide intermediate in folding of bovine pancreatic trypsin inhibitor : A two-dimensional 1H nuclear magnetic resonance study
Author(s) Mierlo, Carlo P.M. van; Darby, Nigel J.; Neuhaus, David; Creighton, Thomas E.
Source Journal of Molecular Biology 222 (1991)2. - ISSN 0022-2836 - p. 353 - 371.
DOI https://doi.org/10.1016/0022-2836(91)90216-S
Department(s) VLAG
Biochemistry
Publication type Refereed Article in a scientific journal
Publication year 1991
Keyword(s) bovine pancreatic trypsin inhibitor (BPTI) - disulphide bonds - folding intermediate - n.m.r. - protein folding
Abstract

An analogue of the BPTI folding intermediate that contains only the disulphide bonds between Cys14 and Cys38 and between Cys30 and Cys51 has been prepared in Escherichia coli by protein engineering methods. The other two Cys residues of native BPTI (at positions 5 and 55) have been replaced by Ser. Essentially complete proton resonance assignments of the analogue were obtained by employing two-dimensional 1H nuclear magnetic resonance techniques. The intermediate has a more extended conformation in the N-terminal (residues 1 to 7) region and there are other differences in the C-terminal (residues 55 to 58) region. The remainder of the protein is substantially identical to native BPTI. The conformational properties of the analogue can explain several aspects of the kinetic role that the normal (14-38, 30-51) intermediate plays in the folding of BPTI.

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