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Related Experiment Videos

Sequence motifs specific for cytosine methyltransferases.

J Pósfai1, A S Bhagwat, R J Roberts

  • 1Cold Spring Harbor Laboratory, NY 11724.

Gene
|December 25, 1988
PubMed
Summary

Researchers identified ten conserved sequence blocks in m5C methyltransferases (MTases) using a novel alignment method. These conserved patterns can help identify new methyltransferases (MTases) in protein databases.

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Area of Science:

  • Biochemistry
  • Bioinformatics
  • Molecular Biology

Background:

  • Methylation is a crucial epigenetic modification.
  • m5C methyltransferases (MTases) play vital roles in regulating gene expression.
  • Understanding MTase sequence conservation is key to identifying novel enzymes.

Purpose of the Study:

  • To analyze the sequence homology of 13 m5C methyltransferases (MTases).
  • To develop conserved sequence motifs for identifying m5C MTases.
  • To investigate the structural organization of m5C MTases.

Main Methods:

  • A new sequence alignment method was employed.
  • Analysis of 13 m5C methyltransferase sequences.
  • Identification and characterization of conserved sequence blocks and motifs.

Main Results:

  • Ten conserved sequence blocks were identified in m5C MTases, arranged in a common order.
  • Consensus patterns for the five most conserved blocks were defined.
  • These patterns effectively distinguished m5C MTases from other proteins in the PIR database.

Conclusions:

  • The identified conserved sequence blocks and motifs are characteristic of m5C MTases.
  • These motifs can aid in the discovery of novel m5C methyltransferases (MTases) within protein sequence databases.
  • The findings provide insights into the conserved structural features of m5C MTases.

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