Zobrazeno 1 - 10
of 179
pro vyhledávání: '"Paul M. Horowitz"'
Publikováno v:
Biochemistry. 41:12843-12849
We investigated the dissociation of single-ring heptameric GroEL (SR1) by high hydrostatic pressure in the range of 1-2.5 kbar. The kinetics of the dissociation of SR1 in the absence and presence of Mg2+, KCl, and nucleotides were monitored using lig
Publikováno v:
Archives of Biochemistry and Biophysics. 403:63-70
The molecular chaperone DnaK and trigger factor (TF), a ribosome-associated protein with folding activity, have been implicated in assisting nascent polypeptides to acquire a three-dimensional structure on Escherichia coli ribosomes. We asked whether
Publikováno v:
Biochemistry. 41:2421-2428
Molecular chaperones GroEL and GroES facilitate reactivation of denatured rhodanese which folds poorly unless the process is assisted. The present work tests the hypothesis that more extensively unfolded forms of rhodanese bind tighter than those for
Publikováno v:
FEBS Letters. 512:209-212
The coding sequence for chloramphenicol acetyl transferase (CAT) contains several rare codons; three of them are ATA encoding isoleucine in positions 13, 84 and 119 of the amino acid sequence. Expression of CAT on Escherichia coli ribosomes in vitro
Autor:
Paul M. Horowitz, Markandeswar Panda
Publikováno v:
Biochemistry. 41:1869-1876
We investigated the dissociation of tetradecameric GroEL by high hydrostatic pressure in the range of 1-2.5 kbar. Kinetics of the dissociation of GroEL in the absence and presence of Mg(2+) and/or KCl were monitored using light scattering. All of the
Publikováno v:
Journal of Biological Chemistry. 276:28739-28743
The in vitro folding of rhodanese involves a competition between formation of properly folded enzyme and off-pathway inactive species. Co-solvents like glycerol or low temperature, e.g. refolding at 10 degrees C, successfully retard the off-pathway f
Autor:
and Alan R. Fersht, Alison L. Smoot, Markandeswar Panda, Bill T. Brazil, Ashley M. Buckle, Paul M. Horowitz
Publikováno v:
Biochemistry. 40:4484-4492
The extent of hydrophobic exposure upon bis-ANS binding to the functional apical domain fragment of GroEL, or minichaperone (residues 191-345), was investigated and compared with that of the GroEL tetradecamer. Although a total of seven molecules of
Publikováno v:
Journal of Biological Chemistry. 275:63-70
The competition between protein aggregation and folding has been investigated using rhodanese (thiosulfate:cyanide sulfurtransferase, EC 2.8.1.1) as a model. During folding from a urea-denatured state, rhodanese rapidly forms associated species or in
Publikováno v:
Proceedings of the National Academy of Sciences. 96:2682-2686
The interaction of the chaperonin GroEL 14 with its cochaperonin GroES 7 is dynamic, involving stable, asymmetric 1:1 complexes (GroES 7 ⋅GroEL 7 –GroEL 7 ) and transient, metastable symmetric 2:1 complexes [GroES 7 ⋅GroEL 7 –GroEL 7 ⋅GroES
Autor:
Paul M. Horowitz, Boris M. Gorovits
Publikováno v:
Biochemistry. 37:6132-6135
The present work demonstrates that high hydrostatic pressure can increase protein folding by reducing nonspecific aggregation. Protein aggregation is one of the main side reactions that competes with protein folding, and it typically results from int