Primer
Primer is a molecule, typically a short strand of RNA, that serves as a starting point for DNA synthesis. It is necessary for DNA replication because the enzymes that catalyze this process, DNA polymerases, can only add new nucleotides to an existing strand of DNA.
Function
The main function of a primer is to act as a starting point for DNA synthesis. During DNA replication, the DNA polymerase enzyme can only add new nucleotides to the 3' end of an existing strand of DNA. Therefore, a primer, which is a short strand of RNA, must first bind to the DNA template strand. This provides a 3' end to which the DNA polymerase can add new nucleotides.
Synthesis
Primers are synthesized by an enzyme called primase. Primase is a type of RNA polymerase that creates a short RNA sequence that is complementary to the DNA template strand. This RNA sequence serves as the primer for DNA synthesis.
Role in DNA Replication
During DNA replication, the primer binds to the DNA template strand at the origin of replication. The DNA polymerase then adds new nucleotides to the 3' end of the primer, extending the DNA strand. Once the DNA replication is complete, the RNA primer is removed and replaced with DNA.
See Also
 |
 |
Ad. Transform your life with W8MD's Budget GLP-1 injections from $49.99
W8MD offers a medical weight loss program to lose weight in Philadelphia. Our physician-supervised medical weight loss provides:
- Weight loss injections in NYC (generic and brand names):
- Zepbound / Mounjaro, Wegovy / Ozempic, Saxenda
- Most insurances accepted or discounted self-pay rates. We will obtain insurance prior authorizations if needed.
- Generic GLP1 weight loss injections from $49.99 for the starting dose of Semaglutide and $65.00 for Tirzepatide.
- Also offer prescription weight loss medications including Phentermine, Qsymia, Diethylpropion, Contrave etc.
NYC weight loss doctor appointmentsNYC weight loss doctor appointments
Start your NYC weight loss journey today at our NYC medical weight loss and Philadelphia medical weight loss clinics.
- Call 718-946-5500 to lose weight in NYC or for medical weight loss in Philadelphia 215-676-2334.
- Tags:NYC medical weight loss, Philadelphia lose weight Zepbound NYC, Budget GLP1 weight loss injections, Wegovy Philadelphia, Wegovy NYC, Philadelphia medical weight loss, Brookly weight loss and Wegovy NYC
|
WikiMD's Wellness Encyclopedia |
| Let Food Be Thy Medicine Medicine Thy Food - Hippocrates |
Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates, categories Wikipedia, licensed under CC BY SA or similar.
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
.svg){kind=link}