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Related Concept Videos

Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
Gene Duplication and Divergence02:37

Gene Duplication and Divergence

The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was  generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
Protein Families02:47

Protein Families

Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism.   Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members.   If these new proteins contain similar amino acids in key locations, protein...
Protein Families02:47

Protein Families

Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism.   Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members.   If these new proteins contain similar amino acids in key locations, protein...
Synteny and Evolution02:31

Synteny and Evolution

John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
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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

Evolution of primate orphan proteins.

Macarena Toll-Riera1, Robert Castelo, Nicolás Bellora

  • 1Biomedical Informatics Research Programme (GRIB), Universitat Pompeu Fabra, Barcelona Biomedical Research Park , Barcelona 08003, Spain. mtoll@imim.es

Biochemical Society Transactions
|July 21, 2009
PubMed
Summary
This summary is machine-generated.

Orphan genes, unique to certain species, likely drive adaptive evolution. Recent studies reveal transposable elements play a key role in forming novel primate orphan genes, challenging previous theories.

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Area of Science:

  • Genomics
  • Evolutionary Biology
  • Molecular Biology

Background:

  • Genomes contain numerous orphan genes, unique to specific species, suggesting roles in lineage-specific adaptations.
  • The origin of these orphan genes remains largely unknown, with traditional theories like gene duplication and rapid divergence insufficient for closely related species.

Purpose of the Study:

  • To review recent findings on the formation mechanisms of primate orphan genes.
  • To investigate the role of transposable elements in the origin of novel protein-coding genes in primates.

Main Methods:

  • Review of recent scientific literature and studies on primate genomics.
  • Analysis of genetic data focusing on orphan gene identification and formation pathways.

Main Results:

  • Transposable elements have an unexpectedly significant role in generating novel protein-coding genes within primate genomes.
  • This finding provides a new perspective on orphan gene origins, particularly in primates.

Conclusions:

  • Transposable elements are a crucial factor in the emergence of primate-specific orphan genes.
  • Understanding these mechanisms enhances our knowledge of genome evolution and adaptation.