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VOLLEDIGE Samenvatting Hoofdstuk 8A: Celcyclus (Biochemie, 1ste BMW)

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Uitgebreide, Volledige Samenvatting van Hoofdstuk 8A van het vak Biochemie en Moleculaire Biologie, in het 1ste jaar Biomedische wetenschappen. Ik heb zelf alles geleerd uit deze samenvatting en was geslaagd in de eerste zit.

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July 13, 2025
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Written in
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Belangrijke factoren in de Celcyclus


CAK = CDK-Activating Kinase

Het gaat de Cdk-Cycline activeren door de T-loop te fosforyleren.




Wee1 Kinase Het gaat de Cdk-Cycline deactiveren door een remmende P op

de Cdk te fosforyleren.




Cdc25 phosphatase Het gaat de Cdk-Cycline juist activeren door de remmende P van

de Cdk eraf te halen (Defosforyleren)



P27 Het kan aan het CDK complex binden kan het complex inactief

maken




1

, P21 p21 is belangrijk bij inactiveren als er DNA schade is




1. De actieve p53 zal binden aan de regulatorische regio van
het p21 gen.
2. Hierna is er transcriptie van het p21 gen tot mRNA.
3. Daarna is er translatie tot het p21 eiwit. Het is een Cdk
Inhibitor eiwit.
4. Het zal binden aan G1/S-Cdk en S-Cdk. Het complex
wordt inactief.



APC/C Dit is belangrijk bij de afbraak van cycline door proteasomen




M-fase Cycline moet afgebroken worden om de anafase te

starten




2
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