Transcription and Intro to Translation

Audio Transcript Auto-generated

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  transcription.

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  The central dogma of biology

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  describes the genetic flow of information

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  from DNA

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  to RNA.

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  Two proteins,

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  more specifically.

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  The central dogma states

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  that DNA produces DNA

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  through the process of replication.

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  It states that DNA produces RNA

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  through transcription

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  and that RNA produces proteins through translation

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  in transcription.

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  There is the template strand.

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  This is the transcribed DNA.

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  There's also the coding strand

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  which is the un transcribed DNA strand.

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  The transcription bubble is where the DNA is unwound

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  and the complementary RNA strand is built.

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  The RNA polymerase

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  is the enzyme that facilitates the RNA synthesis

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  in the initiation phase.

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  RNA polymerase binds to the promoter sequence.

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  The promoter sequence

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  determines where the RNA synthesis starts.

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  It determines which DNA strain will be the template

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  and which one will be the coding

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  and it determines the direction of synthesis

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  depending on which is a template

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  Synthesis always occurs in the 5-3 direction

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  during elongation.

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  The RNA polymerase unwinds the DNA 20 base pairs at a time

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  and joins the complimentary messenger RNA.

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  No proof reading of the product is necessary.

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  This is because

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  there is a little error.

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  There are many copies

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  and it has short life

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  in RNA. We have to remember that day I mean is always replaced with the euro cell

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  after the RNA is complete.

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  The termination sequence

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  signals the RNA polymerase

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  to stop synthesizing the M. RNA strand.

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  The completed M. RNA

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  then leaves the nucleus through the pores

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  After transcription and eukaryotic cells

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  processing of the M. R. N. A. Still needs to occur

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  AGI cap and a poly a tail are added to the ends of the M. RNA.

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  In order to protect it from enzymes

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  that are found in the cytoplasm.

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  Then

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  the introns are edited out and the exons are sliced together.

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  The interns are the non coding sequences

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  and the exons are the coding sequences.

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  The result of spicing together the enzymes

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  is a mature M. RNA strand

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  spices zones which are made up of several snR and PS.

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  Recognize the spice site sequence

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  and ended out. The introns.

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  S. N. R. And P. S. Are small nuclear RNA

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  made up of proteins and RNA

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  after post transcription processing in eukaryotic cells

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  and transcription and new periodic

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  and procure erotic cells.

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  You have translation

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  translation occurs in ribosomes

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  after transcription.

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  The ribosomes are made up of two sub units, the small and the large

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  within translation

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  you have. T. RNA is pairing the anti cardin's with the Kardashians.

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  This results in the formation of a polyp peptide chain

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  In translation.

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  There are four steps

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  activation

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  initiation,

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  elongation

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  and termination.

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  There are also three sites and translation.

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  There's amino acid

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  a site,

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  there is the polyp peptide p site

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  and the exit

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  east side

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  that makes up translation.