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The Central Dogma

The Central Dogma

The Central Dogma

The Central Dogma

Proteins: From Genes to Degradation

Proteins: From Genes to Degradation

Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick. Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
Transcription is the synthesis of RNA molecules by RNA...

The Central Dogma

The Central Dogma

The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...

The Central Dogma

The Central Dogma

The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...

Nucleic Acid Structure

Nucleic Acid Structure

The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA has a double-helix structure. The...

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Related Experiment Video

Updated: Jun 21, 2026

Isolation of mRNAs Associated with Yeast Mitochondria to Study Mechanisms of Localized Translation

Isolation of mRNAs Associated with Yeast Mitochondria to Study Mechanisms of Localized Translation

Published on: March 15, 2014

Small molecules: the missing link in the central dogma.

Stuart L Schreiber¹

¹Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA. stuart_schreiber@harvard.edu

Nature Chemical Biology

|January 13, 2006

Summary

This summary is machine-generated.

Small molecules are vital in biology but not part of the central dogma. Chemical biology research illuminates the crucial functions of these molecules in life processes.

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Last Updated: Jun 21, 2026

Isolation of mRNAs Associated with Yeast Mitochondria to Study Mechanisms of Localized Translation

Isolation of mRNAs Associated with Yeast Mitochondria to Study Mechanisms of Localized Translation

Published on: March 15, 2014

Peering at Brain Polysomes with Atomic Force Microscopy

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Published on: March 16, 2016

Single-step Purification of Macromolecular Complexes Using RNA Attached to Biotin and a Photo-cleavable Linker

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Published on: January 3, 2019

Area of Science:

Biochemistry
Chemical Biology
Molecular Biology

Background:

Small molecules play essential roles across all biological complexity levels.
Despite their importance, small molecules are not explicitly included in the central dogma of molecular biology.
Understanding small molecules is key to comprehending fundamental life processes.

Purpose of the Study:

To highlight the significance of small molecules in biological systems.
To emphasize the role of chemical biology in studying small molecules.
To integrate the study of small molecules into the broader understanding of molecular biology.

Main Methods:

Utilizing chemical biology approaches to investigate small molecule functions.
Analyzing the interactions and pathways involving small molecules.
Integrating experimental data with theoretical models.

Main Results:

Demonstrated critical roles of small molecules in diverse biological functions.
Established chemical biology as a key discipline for studying these molecules.
Provided a framework for understanding small molecules within the context of molecular biology.

Conclusions:

Small molecules are fundamental components of life that warrant dedicated study.
Chemical biology offers powerful tools to elucidate the functions of small molecules.
Further research integrating small molecules into molecular biology frameworks is essential.