Journal article
MyEF-3, a Developmentally Controlled Brain-Derived Nuclear Protein Which Specifically Interacts with Myelin Basic Protein Proximal Regulatory Sequences
Biochemical and biophysical research communications, v 243(1)
04 Feb 1998
PMID: 9473521
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Myelin basic protein (MBP) gene contains the upstream regulatory sequence that confers cell type- and stage-specific transcription to MBP expression in oligodendrocytes during brain development. The MB1regulatory motif located between −14 to −50 with respect to transcription start site binds to a brain derived nuclear protein and plays an important role in transcriptional activation of the MBP promoter in transfection assay. Here, we report the isolation of a recombinant cDNA clone, termedmyelinexpressionfactor-3,(MyEF-3) from a mouse brain expression library that encodes a novel protein which interacts with the MBP MB1domain. Computer assisted evaluations of the MyEF-3 sequence revealed several interesting features including four sites for phosphorylation by casein kinase II, a transmembrane domain at the N-terminus, a nuclear localization signal and a Zinc finger domain at the carboxyl terminal. Results from Western and band shift assays indicate that MyEF-3 binds efficiently to double-stranded MB1as well as the single-stranded non-coding strand of MB1. The use of short DNA fragments encompassing the nucleotide base substitutions across the MB1 domain in competition band shift assay revealed that the ten nucleotide sequence, 5′-GCCTGTCTTT-3′ is important for binding of MyEF-3 to DNA. Results from Northern blot studies demonstrate that expression of MyEF-3 is restricted to brain and developmentally regulated during brain maturation. The biological importance of MyEF-3 in the cell type- and stage-specific expression of MBP during brain development is discussed.
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Details
- Title
- MyEF-3, a Developmentally Controlled Brain-Derived Nuclear Protein Which Specifically Interacts with Myelin Basic Protein Proximal Regulatory Sequences
- Creators
- Andrew Steplewski - Allegheny University of the Health SciencesBarbara Krynska - Allegheny University of the Health SciencesAnna Tretiakova - Allegheny University of the Health SciencesSusan Haas - Allegheny University of the Health SciencesKamel Khalili - Allegheny University of the Health SciencesShohreh Amini - Allegheny University of the Health SciencesStephanie M Haas - Nursing (Undergraduate)
- Publication Details
- Biochemical and biophysical research communications, v 243(1)
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Nursing (Undergraduate)
- Web of Science ID
- WOS:000071862400053
- Scopus ID
- 2-s2.0-0032481272
- Other Identifier
- 991019167558004721
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- Web of Science research areas
- Biochemistry & Molecular Biology
- Biophysics