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Updated: Jul 11, 2026

An Integrated Approach for Microprotein Identification and Sequence Analysis
Published on: July 12, 2022
OCPAT: an online codon-preserved alignment tool for evolutionary genomic analysis of protein coding sequences
Guozhen Liu1, Monica Uddin, Munirul Islam
1Center for Molecular Medicine & Genetics, Wayne State University School of Medicine Detroit, MI 48201, USA. dwildman@med.wayne.edu.
This study introduces OCPAT, an online tool for automatic, codon-preserved DNA sequence alignment. OCPAT simplifies evolutionary analysis by maintaining reading frames and optimizing alignments for comparative genomics.
Area of Science:
- Genomics
- Molecular Evolution
- Bioinformatics
Background:
- Genome sequence data facilitates DNA evolution studies.
- Phylogenetic and selection tests require accurate, frame-maintained alignments.
- Manual checking of codon reading frames is a bottleneck in evolutionary analysis.
Purpose of the Study:
- To develop an automated tool for codon-preserved multiple sequence alignment.
- To facilitate comparative genomic analyses of protein-coding gene sequences.
- To streamline evolutionary studies of biological processes.
Main Methods:
- Developed OCPAT, an online tool for automatic alignment of orthologous genes.
- Extracts orthologs from specified gene IDs and vertebrate tetrapod genomes.
- Maintains codon reading frame and optimizes alignments by trimming variable regions.
Main Results:
- OCPAT generates robust, frame-maintained multiple sequence alignments.
- Alignments are provided in multiple formats for downstream analyses.
- Analysis of 20,658 human RefSeq mRNAs revealed conserved genes in multi-subunit protein complexes.
Conclusions:
- OCPAT automates a critical step in comparative genomic analysis.
- The tool supports large-scale evolutionary and phylogenetic studies.
- Facilitates analysis of biological processes, pathways, and diseases.
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