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Related Concept Videos

Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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Multi-species Conserved Sequences

Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
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Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
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Conservation of Protein Domains Over Different Proteins02:26

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Kendall's Coefficient of Concordance01:20

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Kendall's Coefficient of Concordance (W), also known as Kendall's W, is a non-parametric statistical measure used to assess the agreement or concordance between multiple raters or judges when they rank a set of items. It is often used when you have ordinal data (ranks) and you want to see if there is consistency or consensus among the raters. It is widely applied in research areas such as psychology, medicine, and social sciences, where multiple judges are asked to rank or rate subjects or...
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The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...

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Related Experiment Video

Updated: Jun 19, 2026

Demonstration of the Sequence Alignment to Predict Across Species Susceptibility Tool for Rapid Assessment of Protein Conservation
16:02

Demonstration of the Sequence Alignment to Predict Across Species Susceptibility Tool for Rapid Assessment of Protein Conservation

Published on: February 10, 2023

Assessing the discordance of multiple sequence alignments.

Amol Prakash1, Martin Tompa

  • 1Biomarker Research Initiative in Mass Spectrometry Center, Thermo, 790 Memorial Drive, Suite 201, Cambridge, MA 02139, USA. amol.prakash@thermofisher.com

IEEE/ACM Transactions on Computational Biology and Bioinformatics
|October 31, 2009
PubMed
Summary
This summary is machine-generated.

StatSigMA is a new tool to detect unrelated sequences in multiple sequence alignments, crucial for computational biology. This helps ensure the reliability of genomic and protein analyses.

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Related Experiment Videos

Last Updated: Jun 19, 2026

Demonstration of the Sequence Alignment to Predict Across Species Susceptibility Tool for Rapid Assessment of Protein Conservation
16:02

Demonstration of the Sequence Alignment to Predict Across Species Susceptibility Tool for Rapid Assessment of Protein Conservation

Published on: February 10, 2023

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Published on: August 16, 2017

An Integrated Approach for Microprotein Identification and Sequence Analysis
09:37

An Integrated Approach for Microprotein Identification and Sequence Analysis

Published on: July 12, 2022

Area of Science:

  • Computational Biology
  • Bioinformatics
  • Genomics

Background:

  • Multiple sequence alignments are vital in computational biology for tasks like comparative genomics and protein functional annotation.
  • Assessing the reliability of multiple sequence alignments is challenging due to computational complexity and numerous available tools.
  • Contamination with unrelated sequences can compromise the accuracy of biological sequence analyses.

Purpose of the Study:

  • To introduce StatSigMA, a novel tool designed to identify unrelated sequences within multiple sequence alignments.
  • To provide a method for assessing the statistical significance of multiple sequence alignments.
  • To enhance the reliability of computational biology workflows.

Main Methods:

  • StatSigMA analyzes nucleotide or amino acid sequence alignments.
  • The tool assesses the statistical significance of alignments to detect potential contamination.
  • Methods focus on distinguishing homologous from nonhomologous sequences.

Main Results:

  • StatSigMA can effectively identify alignments contaminated with unrelated sequences.
  • The tool demonstrates utility in distinguishing homologous from nonhomologous sequences.
  • StatSigMA aids in comparing the quality of alignments generated by different multiple alignment tools.

Conclusions:

  • StatSigMA is a valuable tool for improving the reliability of multiple sequence alignments.
  • The accurate assessment of alignment quality is critical for downstream applications in genomics and proteomics.
  • StatSigMA offers a robust solution for data quality control in computational biology.