Mitotic Checkpoint Proteins Mad1 and Mad2 Structural and Functional Relationship with Implication in Genetic Diseases

ISSN: 1875-6697 (Online)
ISSN: 1573-4099 (Print)

Volume 11, 4 Issues, 2015

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Current Computer-Aided Drug Design

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Subhash C. Basak
Departments of Chemistry, Biochemistry & Molecular Biology University of Minnesota Duluth
Duluth, MN 55811

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Mitotic Checkpoint Proteins Mad1 and Mad2 Structural and Functional Relationship with Implication in Genetic Diseases

Current Computer-Aided Drug Design, 10(2): 168-181.

Author(s): Speranta Avram, Maria Mernea, Dan Florin Mihailescu, Corina Duda Seiman, Daniel Duda Seiman and Mihai Viorel Putz.

Affiliation: Anatomy, Animal Physiology and Biophysics Department, Faculty of Biology, University of Bucharest, 91-95th Independentei Str., Sector 5, Bucharest-050095, Romania.


In normal cells, the accuracy of chromosome segregation which assures cells euploidy depends on mitosis mechanics and on proper functioning of a specific complex of proteins represented by the error-checking spindle assembly checkpoint (SAC). SAC proteins are deeply involved in correct cell divisions, but some of these, such as mitotic arrest-deficient proteins (Mad1 and Mad2), are critical. Mad1 and Mad2 are involved in preventing “wrong” cellular divisions which lead to cellular aneuploidy and are recognized as inductors of genetic disorders, as well as activators of oncoproteins. To clarify aneuploidy involvement in the evolution of cancer or other genetic disorders, structural and functional specificity of spindle checkpoint proteins have been analyzed, but the process is still poorly understood.

In order to better understand SAC proteins involvement in initiation of cancer and other genetic disorders, here we review studies that conducted to relevant structural and functional information regarding these proteins. The results of these studies suggest that minor changes in structure and functionality of SAC proteins are able to generate aneuploidy. Therefore, a deeper understanding of Mad1 and Mad2 structural changes obtained by experimental and theoretical studies could open new perspectives of genetic medicine.


3D-structural analysis, cancer, genetic disorders, mitotic arrest-deficient proteins, molecular simulation, mutagenesis.

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Article Details

Volume: 10
Issue Number: 2
First Page: 168
Last Page: 181
Page Count: 14
DOI: 10.2174/1573409910666140410124315

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