Molecular biology is the study of the structure and function of molecules and macromolecular systems associated with biological processes, especially the molecular basis of inheritance and protein synthesis.
Includes mechanisms of gene expression and regulation, especially DNA replication, transcription, translation, and protein synthesis. Applications use recombinant DNA technology, including plasmid construction, vectors, cloning, and transfection. Also includes genomics, proteomics and structural biology.
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NCBI develops a variety of resources (databases including nucleotide, single nucleotide polymorphisms, genome, structure, protein, taxonomy, etc.) for molecular biology information.