Transcription | Gene Expression | Lecture 7
The functional products of most known genes are proteins, or, more accurately, polypeptides. Polypeptide is just another word for a chain of amino acids. Although many proteins consist of a single polypeptide, some are made up of multiple polypeptides.
Genes that specify polypeptides are called protein-coding genes. during expression of a protein-coding gene, information flows from DNA → RNA → protein. This directional flow of information is known as the central dogma of molecular biology.
Non-protein-coding genes (genes that specify functional RNAs) are still transcribed to produce an RNA, but this RNA is not translated into a polypeptide. For either type of gene, the process of going from DNA to a functional product is known as gene expression.
Transcription
• Transcription is the first step in gene expression. It involves copying a gene's DNA sequence to make an RNA molecule.
• Transcription is performed by enzymes called RNA polymerases, which link nucleotides to form an RNA strand (using a DNA strand as a template).
• Transcription has three stages: initiation, elongation, and termination.
• In eukaryotes, RNA molecules must be processed after transcription: they are spliced and have a 5' cap and poly-A tail put on their ends. Transcription initiation To begin transcribing a gene, RNA polymerase binds to the DNA of the gene at a region called the promoter.
Basically, the promoter tells the polymerase where to "sit down" on the DNA and begin transcribing. Elongation Once RNA polymerase is in position at the promoter, the next step of transcription-elongation-can begin. Transcription termination RNA polymerase will keep transcribing until it gets signals to stop. The process of ending transcription is called termination, and it happens once the polymerase transcribes a sequence of DNA known as a terminator. #ProcessOfTranscription #CentralDogmaForGeneExpression #DNATomRNA
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Thank you sooo much both maza aya h lecture lany ka or yad karny ka 😊😊 اللہ پاک آپ کے علم اور عمر میں مزید برکتوں کا نزول فرمائیں آمین
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@powerofknowledgeacademy
2 жыл бұрын
All the best professor... Thanks
Great Sir MashAllah I got the concept of transcription. Sir your way of delivering is best.
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@user-cp8ki7up6t
6 ай бұрын
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@khanamalfiya02
2 ай бұрын
Kya har jagah religion ko la rhe h Bhai, padhne h padhiye achche se
@pitu2majumder288
2 ай бұрын
Idhar v hindu muslim😂
@mctat2035
Ай бұрын
Wah Bhai idhar ve drama shuru kar diya
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Sigma factor , which helps RNA Pol to attach with template stand.
@nargishsheikh7717
Жыл бұрын
Oh it means it's a prokaryotic transaction sir say it's eukaryotic transaction
Deeer mazedar mashallah
@usufjani2365
4 ай бұрын
Pathan
Wallekum assalam Bhai thodi aur deepli padhi B sc level ka. 🇮🇳
v good jzakalah
Great sir. You are much better than phd Sirs. Your way to deliver knowledge is appreciatable. I must watch your video when ever I'm in educational issues.
Seeing this lecture for revision t 2x.
Sukhriya bhai
Thank You Sir ❤
Thnku ❤️ so much sir
This type of transcription happens in prokaryotes Or in eukaryotes?
Weldone thanq❤
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Sir I liked to add something that hydrogen bond never be double or triple there are 2 hydrogen bond in Adenine & Thymine and 3 bonds in Cytosin & Guanine.
Thanks u very much.................
Nice explained sir
Mashallah sir aap bahut aacha samjhate h Allah aapko or nawaze
Awesome
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Thanks sir
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JzakAllah❤
Sir growth and development k leacture upload kr dyn plz....Thank you
Nice class
If i write this explanation in exam for prokaryotes will i get marks? Plz reply
Role of RNA in viruses and bacteria?? Plz explain this topic sir it's an humble request
Sir You can't tell how the RNA are formed in Elongation process.
Thanku
Best 👍
Weldone sir you are a great teacher I request you sir white board clear nazr nhj ata 😢Bht light color he
Allaha salamat rakhay ap ko sir 😊 jazak allah ♥️
What about core enzyme and holoenzyme
Mashallah ❤️❤️🤲
Is this for eukaryotes or prokaryotes???
Ye eukaryotic ya prokaryotic hai?
اسلام علیکم ! Sir plz give a lecture on the "DNA Repair mechanism"
geo sir❤
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Jai Radha wallabh lal😍
Nice
Great sir
@jayprakashsharma881
Жыл бұрын
Hello sir
@alirazasipraofficial8649
Жыл бұрын
@@jayprakashsharma881 G
How DNA_RNA hybrid dissociates ??
Sir neurodegenerative disease ke bare me please kuch information de dijiye
Bth achaaa parhatay han ap sir
Kamal
Jai shree Ram ❤️
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Nicee sir❤❤❤
Very very nice lecture
Nice ser
beautifully explained alhamdulillah
Walekum assalam ❤️
Walaikum assalam😊
Sir Mrna also a product of Dna like protein, r RNA, tRNA. Is it right sir ?
okok
Ram Ram sir!!
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❤❤❤❤
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Ap ne animals chapter nahi kiya sir
Sir transaction in prokaryotes ko btaiye
Great lecture
जय श्री राम गुरु जी
Thanks it was a great help
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Amazing 🤩🤩
Thank u sir🙏❤
This transcription process is of eukaryotes or prokaryotes ?
@Elliee01741
5 күн бұрын
Pro
Sir agar DNA sa mRNA bnata he baqii krna kese bnate he?? Kaha bnte hh???
@bionotes1303
Жыл бұрын
Nucleus m
Nice explanation sir
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@himanshurathore1201
2 жыл бұрын
Jai shree Ram ❤️
@Amitkarangiya
2 жыл бұрын
Khuda tumhe thodi budhdhi de
@Ashacad009
11 ай бұрын
Abey bhadwe idrrr b bhagwan gussa 😂😂
Sir AP notes bi sth dy na huny asani hu ga