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Published on: August 21, 2016
Expression of p40/Epstein-Barr virus nuclear antigen 1 binding protein 2
1Department of Pharmacology, Baylor College of Medicine, Houston, Texas 77030, USA.
Summary
Nucleolar protein p40/EBP2 is highly conserved across species and ubiquitously expressed in human tissues. Its gene structure and promoter region offer insights into regulating its expression in Epstein-Barr virus (EBV)-infected cells.
Area of Science:
- Molecular Biology
- Genetics
- Virology
Background:
- Nucleolar protein p40/EBP2 is a proliferation-associated antigen.
- It interacts with Epstein-Barr virus nuclear antigen 1 (EBNA1) to maintain EBV episomes.
- Yeast p40/EBP2 is involved in ribosomal RNA processing.
Purpose of the Study:
- To investigate the evolutionary conservation of p40/EBP2.
- To determine the expression patterns of p40/EBP2 in human tissues and cell lines.
- To characterize the genomic structure and promoter region of the human p40/EBP2 gene.
Main Methods:
- Comparative sequence analysis of cDNA-derived amino acid sequences.
- Expression analysis in various human tissues and cell lines (including K-562).
- Genomic mapping, exon-intron structure determination, and promoter region analysis.
Main Results:
- High evolutionary conservation of p40/EBP2 amino acid sequences observed from frog to human.
- Ubiquitous expression in human tissues with notable high expression in myelogenous leukemia K-562 cells.
- The human p40/EBP2 gene is located on chromosome 1, featuring nine exons and eight introns, with a minimal promoter region containing Sp1 and c-Ets-1 binding sites.
Conclusions:
- p40/EBP2 is a highly conserved protein with ubiquitous expression in humans.
- Understanding the gene structure and promoter elements is crucial for studying its expression regulation.
- This knowledge will aid research into EBV-infected and non-infected cellular processes.
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