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Related Experiment Video

Updated: Apr 1, 2026

Sequence-specific Labeling of Nucleic Acids and Proteins with Methyltransferases and Cofactor Analogues

Sequence-specific Labeling of Nucleic Acids and Proteins with Methyltransferases and Cofactor Analogues

Published on: November 22, 2014

Methionine.

Elise R Hondorp, Rowena G Matthews

|October 8, 2015

Summary

This summary is machine-generated.

Methionine biosynthesis is crucial for cellular functions. This review details its regulation, S-adenosylmethionine production, and how methionine levels are modulated under cellular stress conditions.

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Area of Science:

Biochemistry
Molecular Biology
Microbiology

Background:

Methionine metabolism is essential for numerous biological processes.
Recent research has significantly advanced our understanding of methionine biosynthesis and its regulation.
Key cellular aspects including uptake, utilization, and the methyl cycle are integral to methionine metabolism.

Purpose of the Study:

To provide a comprehensive overview of methionine biosynthesis, focusing on recent findings.
To detail the unique steps in methionine conversion from homoserine.
To explore the regulation of methionine biosynthesis under cellular stress.

Main Methods:

Literature review of recent findings in methionine metabolism.
Analysis of gene regulation, including the role of MetJ.
Examination of methionine's role in S-adenosylmethionine production and the methyl cycle.

Main Results:

The conversion of homoserine to methionine is catalyzed by homoserine transsuccinylase (HTS).
Methionine is a precursor to S-adenosylmethionine (AdoMet), vital for cellular methylation reactions.
Methionine biosynthesis is inhibited under stressful conditions, impacting growth, particularly in E. coli lacking superoxide dismutases.

Conclusions:

Methionine biosynthesis is tightly regulated and influenced by cellular conditions.
Stress responses can significantly alter methionine metabolism, highlighting its complex regulatory network.
Understanding methionine metabolism is critical for comprehending cellular adaptation and function.