Molecular Biology Overview

Principles

Definition

Molecular biology is the scientific discipline that investigates the molecular basis of biological activity within and between cells. It focuses on the structure, function, synthesis, and interactions of biological macromolecules like nucleic acids and proteins, integrating principles from biochemistry and genetics to understand fundamental cellular processes and provide insights for medicine and biotechnology.

Ontological type

Experimental Techniques

Molecular Mechanisms

Core Concepts

Key developments

Key Figures

Structural Biophysics Foundations era

Philip Μ. Morse [1] is associated with Harvard University [3] and the Massachusetts Institute of Technology [4] during the Structural Biophysics Foundations era. His 1929 paper on Diatomic Molecules According to the Wave Mechanics II Vibrational Levels [6] introduced the wave-mechanical treatment of diatomic molecules, a foundational contribution that foreshadowed structure–function analyses central to this era. Arthur Kornberg [2] was active at Harvard University [3] and Stanford University [5] in this era. His Enzymatic Synthesis of Deoxyribonucleic Acid [7] demonstrated enzymatic DNA synthesis, a milestone that linked catalysis to heredity and helped establish molecular mechanisms as tractable objects of study.

Genome Manipulation and Networks era

Barry Halliwell [1] is a prominent figure in this era, with associations at Harvard University [3] and Baylor College of Medicine [4]. Barry Halliwell [1] contributed to framing redox biology and antioxidants through the 1991 paper Free radicals in biology and medicine [7], a landmark for translating oxidative stress concepts into clinical context and network-level thinking of cellular defenses. John M.C. Gutteridge [2] is associated with University College London [5] and Imperial College London [6] in this era. John M.C. Gutteridge [2] contributed to Free radicals in biology and medicine [7], shaping the view that reactive species underpin signaling and stress responses within genome-related networks.

RNA-Centric Systems Genomics era

Wolfgang Huber [1] is associated with Northwestern University [3] and Heidelberg University [4]. His key contributions include the 2014 paper Moderated estimation of fold change and dispersion for RNA-seq data with DESeq2 [7], which established a principled framework for differential expression analysis and catalyzed robust RNA-seq workflows. Eric S. Lander [2] has been affiliated with Harvard University [5] and the Massachusetts Institute of Technology [6]. His contributions include Gene set enrichment analysis: A knowledge-based approach for interpreting genome-wide expression profiles [8], Molecular Classification of Cancer: Class Discovery and Class Prediction by Gene Expression Monitoring [9], and Chromatin signature reveals over a thousand highly conserved large non-coding RNAs in mammals [10], which collectively advanced functional interpretation of genome-scale data and bridged expression patterns to biological insight in RNA-centric genomics.