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| BIPARTITE STRUCTURE OF THE ALPHA-LACTALBUMIN MOLTEN GLOBULE |
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| Author(s): WU LC, PENG ZY, KIM PS |
| Source: NATURE STRUCTURAL BIOLOGY Volume: 2 Issue: 4 Pages: 281-286 Published: APR 1995 |
| Times Cited: 149 References: 37 |
| Abstract: Molten globules are thought to be general intermediates in protein-folding. Apparently conflicting studies have failed to clarify whether one of the best characterized molten globules, that of alpha-lactalbumin, resembles an expanded native-like protein or a nonspecific collapsed polypeptide. Here we show that the molten globule properties of alpha-lactalbumin are largely confined to one of its two domains. The alpha-helical domain forms a helical structure with a native-like tertiary fold, while the beta-sheet domain is largely unstructured. Molten globules thus possess a native-like backbone topology, but this topology does not necessarily encompass the entire polypeptide chain. Our studies indicate that molten globules provide an approximate solution to, and considerable simplification of the protein folding problem. |
| Document Type: Article |
| Language: English |
Addresses:
1. MIT, DEPT BIOL, WHITEHEAD INST BIOMED RES, HOWARD HUGHES MED INST, CAMBRIDGE, MA 02142 USA |
| Publisher: NATURE PUBLISHING CO, 345 PARK AVE SOUTH, NEW YORK, NY 10010-1707 |
| Subject Category: Biochemistry & Molecular Biology; Biophysics; Cell Biology |
| IDS Number: RH379 |
| ISSN: 1072-8368 |
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