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Structural rearrangements on HIV-1 Tat (32-72) TAR complex formation.

Title data

Metzger, Armin U. ; Schindler, Thomas ; Willbold, Dieter ; Kraft, Margot ; Steegborn, Clemens ; Volkmann, Andrea ; Frank, Rainer W. ; Rösch, Paul:
Structural rearrangements on HIV-1 Tat (32-72) TAR complex formation.
In: FEBS Letters. Vol. 384 (22 April 1996) Issue 3 . - pp. 255-259.
ISSN 1873-3468
DOI: https://doi.org/10.1016/0014-5793(96)00314-6

Abstract in another language

Expression of the early genes of the human immunodeficiency virus type-I (HIV-1) genome is under the control of a trans-activator (Tat) protein. HIV-1 Tat action requires binding to TAR (trans-activation responsive element), an RNA sequence located at the 5'-end of all lentiviral mRNAs. We used various spectroscopic methods to investigate conformational changes on HIV-1 TAR binding to the HIV-1 (32-72) Tat peptide BP1. It comprises the RNA binding region and binds specifically to TAR. We conclude from our experiments that the regular A-form of the TAR RNA is slightly distorted towards the B-form when bound to BP1. Thus, the major groove is widened and the binding of BP1 facilitated. BP1 presumably adopts an extended conformation when binding to TAR and may fit well into the TAR major groove.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: PubMed-ID: 8617366
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biochemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biochemistry > Chair Biochemistry - Univ.-Prof. Dr. Clemens Steegborn
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Biopolymers - Univ.-Prof. Dr. Paul Rösch
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biopolymers > Lehrstuhl Biopolymere - Apl. Prof. Dr. Birgitta Wöhrl
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 10 Apr 2015 10:12
Last Modified: 13 Jun 2019 08:35
URI: https://eref.uni-bayreuth.de/id/eprint/9983