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If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
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All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
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If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Eukaryotic chromosomes need centromeres to ensure their faithful transmission to daughter nuclei. The centromere is the site where the kinetochore assembles for chromosome attachment to the spindle microtubules, directing the chromosome segregation during nuclear division. Kinetochore assembly requires deposition of the centromeric histone H3 variant (CENH3) into centromeric nucleosomes. To investigate the structural requirements for centromere targeting, constructs for several heterologous CENH3 were transformed into the model plant A. thaliana. The results revealed that the more distantly related the heterologous protein is, the lower is the efficiency of targeting. Alignment of CENH3 sequences revealed that the tested species share three amino acids at loop1 region: threonine, arginine and alanine. These amino acids were substituted by asparagine, proline and valine encoding sequences via PCR mutagenesis. The recombinant CENH3 lost the ability to target the centromeres, indicating that the original three amino acids are necessary but not sufficient for targeting A. thaliana centromeres.
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