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Structure of a gene coding for human HMG2 protein
1Department of Biological Science and Technology, Science University of Tokyo, Chiba, Japan.
The Journal of Biological Chemistry
|April 5, 1992
Summary
Researchers isolated and characterized the complete human High Mobility Group 2 (HMG2) gene. This study provides insights into HMG2 protein evolution and its DNA-binding domains.
Area of Science:
- Genomics
- Molecular Biology
- Protein Chemistry
Background:
- High Mobility Group 2 (HMG2) protein plays a role in chromosomal structure.
- Understanding the HMG2 gene is crucial for studying DNA binding proteins.
Purpose of the Study:
- To isolate and characterize the complete human HMG2 gene.
- To analyze the structure and regulatory elements of the HMG2 gene.
- To compare human HMG2 with its pig counterpart.
Main Methods:
- Screening a human genomic library with pig thymus cDNA.
- Gene isolation and characterization.
- Northern hybridization analysis.
- Southern analysis.
Main Results:
- A 4341-base pair fragment containing the entire human HMG2 gene was isolated.
- The HMG2 gene comprises 5 exons, with a predicted mRNA size of 1125 base pairs.
- The human HMG2 protein (208 amino acids) differs slightly from the pig HMG2 protein.
- The DNA binding domains (HMG-box) are highly homologous between human and pig HMG2.
Conclusions:
- This is the first isolation and characterization of the complete human HMG2 gene.
- The findings are valuable for evolutionary and genomic analysis of HMG-box containing proteins.
- The human HMG2 gene structure and its comparison to pig HMG2 offer insights into protein function and evolution.