Sequence-Specific Resonance Assignments of the 1H-NMR Spectra of a Synthetic, Biologically Active EIAV Tat Protein

Title data

Willbold, Dieter ; Krüger, Uwe ; Frank, Rainer ; Rosin-Arbesfeld, Rina ; Gazit, Arnona ; Yaniv, Abraham ; Rösch, Paul:
Sequence-Specific Resonance Assignments of the 1H-NMR Spectra of a Synthetic, Biologically Active EIAV Tat Protein.
In: Biochemistry. Vol. 32 (1993) Issue 33 . - pp. 8439-8445.
ISSN 1520-4995
DOI: https://doi.org/10.1021/bi00084a008

Official URL:

Abstract in another language

The equine infectious anemia virus (EIAV) trans-activating (Tat) protein is a close homologue of the human immunodeficiency virus (HIV) Tat protein. Both of these proteins bind to an RNA trans-activation responsive element (TAR). We synthesized chemically a protein with the sequence of the 75 amino acid Tat protein from EIAV. The chemically synthesized protein was shown to be biologically active. Circular dichroism (CD) and 1H nuclear magnetic resonance (NMR) spectroscopy were used to structurally characterize the synthetic protein. We obtained nearly complete resonance assignments in the 2D-NMR spectra of the protein at pH 3.0. There is at least some evidence from the experimental data that the basic TAR binding domain of the synthetic protein has a tendency to form a helix, but our experiments also indicate that the protein probably does not have an overall stable tertiary structure in aqueous solution at this pH. CD spectroscopy suggested that the protein adopts a more stable, predominantly alpha-helical structure in a trifluoroethanol/water solution.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Institutions of the University:	Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Biopolymers - Univ.-Prof. Dr. Paul Rösch 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 > Former Professors Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biochemistry with an Emphasis on Biophysical Chemistry
Result of work at the UBT:	Yes
DDC Subjects:	500 Science > 540 Chemistry 500 Science > 570 Life sciences, biology
Date Deposited:	09 Jan 2019 08:42
Last Modified:	20 Apr 2022 12:12
URI:	https://eref.uni-bayreuth.de/id/eprint/46837