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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Sandman, K. Krzycki, J. A. Reeve, J. N. Dobrinski, B. Lurz, R. |
| Description | Author Affiliation: Sandman K ( Department of Microbiology, Ohio State University, Columbus 43210.); |
| Abstract | Methanothermus fervidus grows optimally at 83 degrees C. A protein designated HMf (histone M. fervidus) has been isolated from this archaeal hyperthermophile that binds to double-stranded DNA molecules and increases their resistance to thermal denaturation. HMf binding to linear double-stranded DNA molecules of greater than 2 kilobase pairs also increases their electrophoretic mobilities through agarose gels. Visualization of this compaction process by electron microscopy has demonstrated the formation of quasispherical, macromolecular HMf-DNA complexes. HMf is a mixture of approximately equal amounts of two very similar polypeptides designated HMf-1 and HMf-2. Determination of the DNA sequence of the gene encoding HMf-2 (hmfB) has revealed that over 30% of the amino acid residues in HMf-2 are conserved in the consensus sequences derived for eucaryal histones H2A, H2B, H3, and H4. These archaeal polypeptides and eucaryal histones appear therefore to have evolved from a common ancestor and are likely to have related structures and functions. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 15 |
| Volume Number | 87 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1990-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Archaeal Proteins DNA-Binding Proteins Genetics Euryarchaeota Histones Amino Acid Sequence Cloning, Molecular DNA, Bacterial Ultrastructure Metabolism Hot Temperature Microscopy, Electron Molecular Sequence Data Plasmids Sequence Homology, Nucleic Acid Comparative Study Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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