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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Wüthrich, K. Qian, Y. Q. Resendez-perez, D. Gehring, W. J. |
| Description | Author Affiliation: Qian YQ ( Institut für Molekularbiologie und Biophysik, Eidgenössiche Technische Hochschule-Hönggerberg, Zürich, Switzerland.); |
| Abstract | The nuclear magnetic resonance (NMR) solution structure of an N-terminally truncated mutant Antennapedia homeodomain, des(1-6)Antp(C39S), has been determined from 935 nuclear Overhauser effect upper distance constraints and 148 dihedral angle constraints by using the programs DIANA and OPAL. Twenty conformers representing the solution structure of des(1-6)Antp(C39S) have an average root-mean-square distance relative to the mean coordinates of 0.56 A for the backbone atoms of residues 8-59. Comparison with the intact Antp(C39S) homeodomain shows that the two proteins have identical molecular architectures. The removal of the N-terminal residues 1-6, which are flexibly disordered in the intact homeodomain, causes only strictly localized structure variations and does not noticeably affect the adjoining helix I from residues 10-21. The DNA-binding constant of des(1-6)Antp(C39S) is approximately 10-fold reduced relative to the intact Antp(C39S) homeodomain, which can now be attributed to the absence of the previously reported contacts of the N-terminal polypeptide segment of the intact Antp(C39S) homeodomain with the minor groove of the DNA duplex. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 9 |
| Volume Number | 91 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1994-06-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | DNA-Binding Proteins Metabolism Homeodomain Proteins Nuclear Proteins Transcription Factors Amino Acid Sequence Animals Antennapedia Homeodomain Protein DNA Primers Chemistry Ultrastructure Drosophila Proteins Drosophila Melanogaster Genes, Homeobox Magnetic Resonance Spectroscopy Molecular Sequence Data Protein Structure, Tertiary Recombinant Proteins Structure-Activity Relationship Comparative Study Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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