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When the sperm fertilizes this gamete, it introduces the protein cyclin, which then activates the decomposition of the inhibitory protein.

If thale cress were to be genetically modified such that the central cells produced the protein cyclin themselves, they would begin to divide even without fertilization.

This enzyme is similar to cyclin-dependent kinases, has a binding pocket for the molecule ATP and is found in complex with the cyclin protein CYC9. b, The level of parasites in mice treated with compound 7 was reduced.

When the authors isolated the enzymes, they were found to be associated with cyclin partners.

These results focused attention on CRK12, together with its associated cyclin protein CYC9, as the probable target of compound 7.