China product quality peptide P21 99%Lyophilized powder in stock P21

• Cyclin-CDK Complex Inhibition: p21 binds directly to Cyclin-Cyclin-Dependent Kinase (CDK) complexes. This binding blocks the kinase activity of the complex. Consequently, the cell cycle is arrested at the G1 phase, effectively halting DNA replication.
• PCNA Interaction: p21 interacts with Proliferating Cell Nuclear Antigen (PCNA), a cofactor for DNA polymerase. By binding to PCNA, p21 inhibits DNA synthesis, which is critical for allowing time for DNA damage repair or initiating cellular senescence.
• p53 Pathway Mediation: It acts as a primary downstream effector of the p53 tumor suppressor protein. When cells detect DNA damage, p53 activates p21 expression to coordinate the cellular stress response.

 P21 benefits

• Memory improvement;
• Increase in cognitive processes;
• Increase in verbal fluency;
• Improves mental health and mood;
• Increases levels of brain-derived neurotrophic factor (BDNF), an important brain-growth compound.
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Anne

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PAYMENT METHOD

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FAQ

Q1: About the after-sale service

A: After purchasing the products from our Lab, we have A professional technical team and after-sales team to serve you and solve all your problems in the future

Q2: Do you have stock?

A: We understand most customers prefer stock, so we'll try to keep stock for most products. However, for some rare products, we won't keep stock and it needs time to synthesize.

Q3: How do I start paying?

Payment can be made by Bitcoin,wire transfer or paypal

Q4: How to confirm product quality before placing an order?

A: We got good feedback from customers and Tested by third-party institutions. You also can get free samples of some products. You just have to pay the shipping fee for the sample .

You can send us your product specifications and requirements and we can customize for you.

Q5: What is your MOQ?

A: The minimum quantity we can order is 1 box.

But usually we can accept a smaller quantity, say 100g, at the cost of 100% sample charge.

Q6: Time for delivery?

A: Leading time within 3 business days,Shipping time about 8-10 business days. 

Q7: Why should I choose you?

A: Powerful technical support-come from our highly skilled & fully experienced staff, working in chemical industry for over 5years, in average.Strict quality control-comes form our sophisticated management system.Professional and warm sales team-since we believe we can only win via our hard work in a competitive world.Quick response and excellent presale and after sale service-since we believe our customers deserve all the best service.