Abstract

Despite the general observation that single domain proteins denature in a completely cooperative manner, amide hydrogen exchange of ribonuclease H in low levels of denaturant demonstrates the existence of two partially folded species. The structures of these marginally stable species resemble kinetic folding intermediates and the molten globule state of the protein. These data suggest that the first region to fold is the thermodynamically most stable portion of the protein and that the molten globule is a high free energy conformation present at equilibrium in the native state. Study holds ProTherm entries: 9931, 9932, 9933, 9934, 9935, 9936, 9937, 9938, 9939, 9940, 9941, 9942, 9943, 9944, 9945, 9946, 9947, 9948, 9949, 9950, 9951, 9952, 9953, 9954, 9955, 9956, 9957, 9958, 9959, 9960, 9961, 9962, 9963, 9964, 9965, 9966, 9967, 9968, 9969, 9970, 9971, 9972, 9973, 9974, 9975, 9976 Extra Details: amide proton exchange in Ile7 single domain proteins; cooperative manner; partially folded species;,molten globule; free energy conformation

Submission Details

ID: DkAw9nS94

Submitter: Connie Wang

Submission Date: April 24, 2018, 8:39 p.m.

Version: 1

Publication Details

Chamberlain AK;Handel TM;Marqusee S,Nat. Struct. Biol. (1996) Detection of rare partially folded molecules in equilibrium with the native conformation of RNaseH. PMID:8784352

Additional Information