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Related Concept Videos

The Central Dogma01:25

The Central Dogma

Overview
From DNA to Protein03:06

From DNA to Protein

The flow of genetic information in cells from DNA to mRNA to protein is described by the central dogma, which states that genes specify the sequence of mRNAs, which in turn specify the sequence of amino acids making up all proteins. The decoding of one molecule to another is performed by specific proteins and RNAs. Because the information stored in DNA is so central to cellular function, it makes intuitive sense that the cell would make mRNA copies of this information for protein synthesis...
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DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
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¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

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When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
The Central Dogma01:20

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Related Experiment Video

Updated: May 13, 2026

Residue-specific Incorporation of Noncanonical Amino Acids into Model Proteins Using an Escherichia coli Cell-free Transcription-translation System
11:47

Residue-specific Incorporation of Noncanonical Amino Acids into Model Proteins Using an Escherichia coli Cell-free Transcription-translation System

Published on: August 1, 2016

A redesigned genetic code for selective labeling in protein NMR.

Zoltán Gáspári1, Gábor Pál, András Perczel

  • 1Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary. szpari@chem.elte.hu

Bioessays : News and Reviews in Molecular, Cellular and Developmental Biology
|July 16, 2008
PubMed
Summary

Scientists propose a universal cell-free translation system for precise protein labeling. This tool could advance NMR spectroscopy by enabling site-specific insertion of labeled amino acids.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Biotechnology

Background:

  • Cell-free protein synthesis systems offer advantages for specific applications.
  • Current methods for incorporating labeled amino acids into proteins have limitations.
  • Nuclear Magnetic Resonance (NMR) spectroscopy requires precisely labeled proteins for structural and functional studies.

Purpose of the Study:

  • To outline a universal cell-free translation system for site-specific incorporation of labeled amino acids.
  • To demonstrate the potential of such a system for enhancing NMR spectroscopy.
  • To propose solutions for challenges in developing advanced protein labeling techniques.

Main Methods:

  • Design of a novel genetic code for site-specific amino acid insertion.
  • Conceptualization of a specialized reactor system to support the translation process.
  • Leveraging recent advancements in understanding the translation apparatus.

Main Results:

  • A theoretical framework for a universal cell-free translation system is presented.
  • The proposed system enables site-specific insertion of diverse labeled amino acids.
  • Potential applications in NMR spectroscopy and studying protein function are highlighted.

Conclusions:

  • The development of a universal cell-free translation system is feasible.
  • This system promises to be a powerful tool for protein research, particularly for NMR spectroscopy.
  • Even incomplete systems can provide valuable insights into protein functionality.