Chromatin Bound PCNA is Complexed with Cell Cycle Protein Regulators as Determined by Chromatin Immunoprecipitation

Authors

  • Nazul Becerril Universidad Nacional Autónoma de México
  • Miguel Ángel Martínez Universidad Nacional Autónoma de México
  • Elpidio García Universidad Nacional Autónoma de México
  • Jorge Manuel Vázquez Ramos Universidad Nacional Autónoma de México

DOI:

https://doi.org/10.29356/jmcs.v56i1.268

Keywords:

Maize, PCNA, D cyclins, Cdks, ChIP, cell cycle

Abstract

Using the technique of Chromatin Immunoprecipitation, we have detected the formation of complexes between the homotrimer protein ring Proliferating Cell Nuclear Antigen, PCNA, and two fundamental regulators of the cell cycle, CdkA and Cyclin D4;2 along germination of maize seeds. This finding suggests the way PCNA participates in the control of the G1 phase, by allowing cyclin-kinase complexes to find and phosphorylate protein targets. Incidentally, PCNA may form a structure of a dimer of trimer when bound to the chromatin.

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Author Biographies

Nazul Becerril, Universidad Nacional Autónoma de México

Facultad de Química, Departamento de Bioquímica

Miguel Ángel Martínez, Universidad Nacional Autónoma de México

Facultad de Química, Departamento de Bioquímica

Elpidio García, Universidad Nacional Autónoma de México

Facultad de Química, Departamento de Bioquímica

Jorge Manuel Vázquez Ramos, Universidad Nacional Autónoma de México

Facultad de Química, Departamento de Bioquímica

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Published

2017-10-12