Genomics - Page 3
Functional Genomics
The words of Winston Churchill, spoken in 1942 after three years of war, capture well this stage of the human genomic era: "Now this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning."
The avalanche of genome data grows daily. The new challenge will be to use this vast reservoir of data to explore how DNA and proteins work with each other and the environment to create complex, dynamic living systems.
Systematic studies of function on a grand scale-functional genomics-will be the focus of biological explorations in this century and beyond. These explorations will encompass studies in other "omics" such as:
- Transcriptomics which involves large-scale analysis of messenger RNAs transcribed from active genes in order to follow when, where, and under what conditions genes are expressed.
- Structural genomics initiatives are being launched worldwide to generate the 3-D structures of one or more proteins from each protein family, thus offering clues to function and biological targets for drug design.
- Comparative genomics - analyzing DNA sequence patterns from humans and well-studied model organisms side-by-side has become one of the most powerful strategies for identifying human genes and interpreting their function.
- Knockout studies to inactivate genes in living organisms and monitor any changes that could reveal their functions are experimental methods for understanding the function of DNA sequences and the proteins they encode.
The Future of Genome-Based Research
Rapid progress in genome science and a glimpse into its potential applications have spurred observers to predict that biology will be the foremost science of the 21st century.