Title : Correlation between disulfide reduction and conformational unfolding in bovine pancreatic trypsin inhibitor.

Pub. Date : 1997 Mar 25

PMID : 9132026






12 Functional Relationships(s)
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1 The native-like two-disulfide intermediate of bovine pancreatic trypsin inhibitor (BPTI), with the disulfide between Cys14 and Cys38 reduced, plays a particularly important role in the disulfide-coupled folding pathway of BPTI because of its participation in the rate-determining step of the reaction [Creighton & Goldenberg (1984) J. Mol. Disulfides spleen trypsin inhibitor I Bos taurus
2 The native-like two-disulfide intermediate of bovine pancreatic trypsin inhibitor (BPTI), with the disulfide between Cys14 and Cys38 reduced, plays a particularly important role in the disulfide-coupled folding pathway of BPTI because of its participation in the rate-determining step of the reaction [Creighton & Goldenberg (1984) J. Mol. Disulfides spleen trypsin inhibitor I Bos taurus
3 The native-like two-disulfide intermediate of bovine pancreatic trypsin inhibitor (BPTI), with the disulfide between Cys14 and Cys38 reduced, plays a particularly important role in the disulfide-coupled folding pathway of BPTI because of its participation in the rate-determining step of the reaction [Creighton & Goldenberg (1984) J. Mol. Disulfides spleen trypsin inhibitor I Bos taurus
4 The native-like two-disulfide intermediate of bovine pancreatic trypsin inhibitor (BPTI), with the disulfide between Cys14 and Cys38 reduced, plays a particularly important role in the disulfide-coupled folding pathway of BPTI because of its participation in the rate-determining step of the reaction [Creighton & Goldenberg (1984) J. Mol. Disulfides spleen trypsin inhibitor I Bos taurus
5 The native-like two-disulfide intermediate of bovine pancreatic trypsin inhibitor (BPTI), with the disulfide between Cys14 and Cys38 reduced, plays a particularly important role in the disulfide-coupled folding pathway of BPTI because of its participation in the rate-determining step of the reaction [Creighton & Goldenberg (1984) J. Mol. Disulfides spleen trypsin inhibitor I Bos taurus
6 The native-like two-disulfide intermediate of bovine pancreatic trypsin inhibitor (BPTI), with the disulfide between Cys14 and Cys38 reduced, plays a particularly important role in the disulfide-coupled folding pathway of BPTI because of its participation in the rate-determining step of the reaction [Creighton & Goldenberg (1984) J. Mol. Disulfides spleen trypsin inhibitor I Bos taurus
7 In order to study directly the relationship between conformational stability and reductive unfolding kinetics, and to gain insight concerning the rate-limiting transition state in the thiol/disulfide-mediated folding/unfolding reaction of BPTI, BPTI variants based on a native-like two-disulfide analog of this intermediate, BPTI(Ala14)Ala38, were examined. Disulfides spleen trypsin inhibitor I Bos taurus
8 In order to study directly the relationship between conformational stability and reductive unfolding kinetics, and to gain insight concerning the rate-limiting transition state in the thiol/disulfide-mediated folding/unfolding reaction of BPTI, BPTI variants based on a native-like two-disulfide analog of this intermediate, BPTI(Ala14)Ala38, were examined. Disulfides spleen trypsin inhibitor I Bos taurus
9 In order to study directly the relationship between conformational stability and reductive unfolding kinetics, and to gain insight concerning the rate-limiting transition state in the thiol/disulfide-mediated folding/unfolding reaction of BPTI, BPTI variants based on a native-like two-disulfide analog of this intermediate, BPTI(Ala14)Ala38, were examined. Disulfides spleen trypsin inhibitor I Bos taurus
10 The kinetic stability, with respect to reduction by dithiothreitol, of the disulfides in these BPTI(Ala14)Ala38 variants was also decreased by the substitutions. Disulfides spleen trypsin inhibitor I Bos taurus
11 Furthermore, the results provide a theoretical explanation for the observed 1000-fold diminution in the rate of 5-55 disulfide bond formation, relative to that of 14-38 bond formation, from the one-disulfide (30-51) intermediate in the wild-type BPTI refolding reaction. Disulfides spleen trypsin inhibitor I Bos taurus
12 Furthermore, the results provide a theoretical explanation for the observed 1000-fold diminution in the rate of 5-55 disulfide bond formation, relative to that of 14-38 bond formation, from the one-disulfide (30-51) intermediate in the wild-type BPTI refolding reaction. Disulfides spleen trypsin inhibitor I Bos taurus