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Related Concept Videos

Inhibitors of Bacterial Protein Synthesis01:25

Inhibitors of Bacterial Protein Synthesis

Aminoglycosides constitute a highly potent class of bactericidal antibiotics that exert their antimicrobial effects by targeting the bacterial ribosome, specifically disrupting protein synthesis. These polycationic molecules consist of amino-modified sugars linked via glycosidic bonds to an aminocyclitol core such as 2-deoxystreptamine or streptamine. Their strong positive charges facilitate tight binding to the negatively charged phosphate backbone of ribosomal RNA (rRNA), primarily at the 16S...
Types of RNA01:23

Types of RNA

Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Types of RNA01:20

Types of RNA

Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
Inhibitors of Gram-positive Cell Wall Synthesis01:23

Inhibitors of Gram-positive Cell Wall Synthesis

Bacterial cell walls are typically rigid structures composed mainly of peptidoglycan, a mesh-like polymer that provides mechanical strength and maintains cell shape. The synthesis of peptidoglycan is a crucial process in bacterial growth and serves as a primary target for many antibiotics.Mechanism of Action of Beta-Lactam AntibioticsBeta-lactam antibiotics, such as penicillin, inhibit peptidoglycan synthesis in actively growing cells. These antibiotics share a characteristic four-membered...
Inhibitors of Bacterial DNA Synthesis01:28

Inhibitors of Bacterial DNA Synthesis

Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These antibiotics are selectively...
Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...

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Related Experiment Video

Updated: May 20, 2026

Isolation of Translating Ribosomes Containing Peptidyl-tRNAs for Functional and Structural Analyses
11:19

Isolation of Translating Ribosomes Containing Peptidyl-tRNAs for Functional and Structural Analyses

Published on: February 25, 2011

Antibiotics that affect the ribosome.

T Lambert1

  • 1EA4043, Faculty of Pharmacy, University Paris XI 92296 Châtenay-Malabry, France.

Revue Scientifique Et Technique (International Office of Epizootics)
|August 2, 2012
PubMed
Summary

Antibiotics target bacterial ribosomes, inhibiting protein synthesis. Bacteria develop resistance through detoxification, target modification, and reduced drug accumulation, leading to cross-resistance.

Area of Science:

  • Microbiology
  • Molecular Biology
  • Pharmacology

Background:

  • The bacterial ribosome is a primary target for many antibiotics.
  • Antibiotics disrupt essential processes like messenger RNA translation and peptide bond formation.
  • Bacterial resistance mechanisms are crucial for understanding antibiotic efficacy.

Purpose of the Study:

  • To elucidate the mechanisms of bacterial resistance to protein synthesis inhibitors.
  • To understand how antibiotic binding to ribosomal subunits contributes to resistance.
  • To explore the basis for cross-resistance between different antibiotic families.

Main Methods:

  • Analysis of drug-ribosome interactions.
  • Investigation of bacterial resistance strategies.

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RIBO-seq in Bacteria: a Sample Collection and Library Preparation Protocol for NGS Sequencing
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RIBO-seq in Bacteria: a Sample Collection and Library Preparation Protocol for NGS Sequencing

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Antibiotic Dereplication Using the Antibiotic Resistance Platform
10:49

Antibiotic Dereplication Using the Antibiotic Resistance Platform

Published on: October 17, 2019

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Last Updated: May 20, 2026

Isolation of Translating Ribosomes Containing Peptidyl-tRNAs for Functional and Structural Analyses
11:19

Isolation of Translating Ribosomes Containing Peptidyl-tRNAs for Functional and Structural Analyses

Published on: February 25, 2011

RIBO-seq in Bacteria: a Sample Collection and Library Preparation Protocol for NGS Sequencing
12:05

RIBO-seq in Bacteria: a Sample Collection and Library Preparation Protocol for NGS Sequencing

Published on: August 7, 2021

Antibiotic Dereplication Using the Antibiotic Resistance Platform
10:49

Antibiotic Dereplication Using the Antibiotic Resistance Platform

Published on: October 17, 2019

  • Identification of key ribosomal components involved in antibiotic binding.

    • Main Results:

    • Antibiotic binding to ribosomal subunits inhibits protein synthesis.
    • Mechanisms of resistance include enzymatic detoxification, target alteration (rRNAs, proteins), and reduced accumulation (impermeability, efflux).
    • Shared binding sites in rRNA explain cross-resistance to distinct antibiotic classes.

    Conclusions:

    • Bacterial resistance to antibiotics is multifaceted, involving direct target modification and reduced drug accumulation.
    • Understanding these resistance mechanisms is vital for developing new antibiotics.
    • Cross-resistance highlights the interconnectedness of antibiotic action and bacterial defense strategies.