[Progress in proteogenomics of prokaryotes].

Area of Science:

• Genomics
• Proteomics
• Bioinformatics

Background:

• Advancements in genome sequencing yield vast prokaryotic data.
• Traditional genome annotation relies on sequence and homology, prone to errors like incorrect N-terminals and pseudogenes.
• Poor genome sequencing quality further complicates accurate annotation.

Purpose of the Study:

• To address limitations in traditional prokaryotic genome annotation.
• To highlight the advantages of proteomics in verifying and correcting gene annotations.
• To review the progress and discuss future directions of proteogenomics in prokaryotes.

Main Methods:

• Review of traditional genome annotation algorithms and their shortcomings.
• Summary of proteomics techniques (e.g., MS/MS) for high-throughput gene product identification.
• Analysis of proteogenomics approaches integrating proteomics with genomics for prokaryotes.

Main Results:

• Proteomics offers high sensitivity and specificity for identifying expressed gene products.
• Proteomics effectively verifies and corrects errors in genome annotations, unlike transcriptomics which can be confused by non-coding RNA.
• Proteogenomics provides a robust basis for accurate prokaryotic genome annotation.

Conclusions:

• Proteomics-based proteogenomics is crucial for accurate prokaryotic genome annotation.
• Integration of proteomics addresses limitations of sequence-based methods, especially for complex or low-quality genomes.
• Further development in data analysis strategies is needed to fully realize the potential of proteogenomics.