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Comparison of human and shirbot (Cyprinidae: Barbus grypus) hemoglobin: a structure-function prospective

Mohammad Reza Dayer1, Ali Akbar Moosavi-Movahedi, Mohammad Saaid Dayer

  • 1Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran. mrdayer@scu.asc.ir

Protein and Peptide Letters
|June 17, 2011
PubMed

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Gene Families

Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
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Structure and Function of Erythrocytes

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Hemoglobin is a globular protein made up of four subunits. Two of these subunits are alpha chains, and the other two are beta chains. Each subunit contains a molecule of heme, which has an iron atom and can bind to oxygen. When an oxygen molecule binds to one heme group, it changes the shape of hemoglobin, making it easier for the other heme groups to bind oxygen as well.
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Globular and Fibrous Proteins

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Protein Families

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