Related Experiment Videos
Haplotypic polymorphisms of the TNFB gene.
L J Abraham1, D C Du, K Zahedi
1Department of Clinical Immunology, Royal Perth Hospital, Western Australia.
Immunogenetics
|January 1, 1991
Summary
The tumor necrosis factor beta (TNFB) genes from two major histocompatibility complex (MHC) ancestral haplotypes were sequenced, revealing unique nucleotide sequences and allelic differences. These genetic variations, including an amino acid change, may influence disease associations.
Area of Science:
- Immunogenetics
- Molecular genetics
Background:
- The major histocompatibility complex (MHC) harbors genes critical for immune response.
- Ancestral haplotypes represent conserved blocks of genes inherited together.
Purpose of the Study:
- To compare tumor necrosis factor beta (TNFB) genes from two distinct MHC ancestral haplotypes.
- To identify and characterize nucleotide polymorphisms within these TNFB alleles.
Main Methods:
- Cloning and sequencing of TNFB genes from ancestral haplotypes 8.1 and 57.1.
- Comparative analysis of nucleotide sequences to detect differences.
Main Results:
- The TNFB genes from haplotypes 8.1 and 57.1 were found to be allelic with unique nucleotide sequences.
- Three nucleotide differences were identified between the TNFB alleles.
- One nucleotide difference resulted in a distinct amino acid in the mature TNFB protein.
Conclusions:
- TNFB gene exhibits polymorphism between different MHC ancestral haplotypes.
- These identified polymorphisms may play a role in differential gene regulation related to disease associations.