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Transcription and Translation



Uploaded by: msc0328
Video Description:
This is another clip from the PBS production DNA: The Secret of Life.
A Windfall Films Production for Thirteen/WNET New York in association with Channel Four. © 2003 Educational Broadcasting Corporation.


Tags for this video: cell DNA genetics RNA transcription translation

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Comments for this video on YouTube
it was a primer ( 1 month ago by bhaduvk21)
it was a primer
dang! this is good. ... ( 1 month ago by lolboy101)
dang! this is good. i have like a bio test tomorrow. this is awesome!
great vid man this ... ( 1 month ago by 2iraqi4u)
great vid man this should help for my exam :D!
My biochemistry ... ( 1 month ago by natty1214)
My biochemistry professor showed us this video in class. Thanks for posting it!!!
Letter U= Uracil ( 1 month ago by berlin45ers)
Letter U= Uracil
Sigma factor binds ... ( 1 month ago by RyanBunctious)
Sigma factor binds to RNA Pol. initializing transcription. The reason it's so far away is because it binds at a region that is -35 nucleotides away from the origin of transcription, designated +1. RNA pol is at -10. Upon joining of the two, sigma dissociates and elongation proceeds.
hey, it's awesome :) ( 4 weeks ago by Vejusese)
hey, it's awesome :)
this amazes me... ( 4 weeks ago by katiekish)
this amazes me...
3:30 it is the ... ( 4 weeks ago by nemeczek67)
3:30 it is the other way round. The growing protein chain is added to the amino acid carried by the 'next' tRNA. If the opposite were true, the 'previous' tRNA would never get released from the ribosome
I'm pretty sure the ... ( 3 weeks ago by hmoten1)
I'm pretty sure the amino acid is added to the growing protein. The P-tRNA attaches the new amino acid while it is in the A site and then is moved to the P site. The overall chain is not moved at all. The previous tRNA is moved using EF-G.
correct ( 3 weeks ago by nazgour)
correct
"what" is "added" ... ( 3 weeks ago by GetMeThere1)
"what" is "added" to "what" is PURELY a semantic difference.
Is your ass added to a chair, or a chair added to your ass? Is there a difference?
Whats moving the ... ( 3 weeks ago by W1930U7)
Whats moving the little green transfere molecules? How do they know where to go? Did the first living cell have something like this?
yes there is ( 3 weeks ago by igotsachubby)
yes there is
Hmmm... Isn't the ... ( 3 weeks ago by vangfc)
Hmmm... Isn't the blue molecule that's initiating RNA synthesis called a RNA polymerase II? Seems to me like the blue molecule is doing the job of both the topoisomerases and DNA helicase... And they didn't talk about the transcription factors which needs to bind to the TATA box before inviting RNA polymerase II to synthesis. These guys are really leaving crucial information out...
The first living ... ( 1 week ago by Fullprime)
The first living cell would have been nothing like this in DNA translation etc... This is because at the beginning the assembly of proteins would have been by chance from random arrangement of present amnio acids. Accidental arrangements that later become enzymes for this reaction are lucky occurences accounted for by evolution. The first living cells were 99.9% different from anything alive now.
"The first living ... ( 1 week ago by W1930U7)
"The first living cells were 99.9% different from anything alive now." Perhaps they were a little different, but the first living cell would still need something like this ability to survive. If it didn't, how would it self-replicate? As well as the ability to consume and digest materials breaking them down into individual particals for energy (e.g.phagocytosis), would you agree? So, I think the first living cell couldn't have been all that much different.
Not neccesarily, ... ( 1 week ago by Fullprime)
Not neccesarily, remeber that at the very begginging there would be little need for phagocytosis as most particals could simply be absorbed via diffusion . Also, amino acids form very readily in normal climates seperate from DNA machinary. As regards to replication, during the first steps of life replication need not neccesarily happen by 'modern' means. After all, the first life-forms came about from means other than replication.
The first life ... ( 1 week ago by W1930U7)
The first life forms would need some method of replicating its innards. If it didn't, it wouldn't be able to grow to what we see today, correct? For replication to take place there would have to be some form of information storing structure that would that would lay the blueprint for how the cell should go about duplicating itself, right? I don't see how this process could get much less complex then what we are able to observe today.
It doesnt HAVE to ... ( 1 week ago by Fullprime)
It doesnt HAVE to replicate innards, this is the founding principle of survival of the fittest. The genetic blueprint is a huge, early onset advantage that had such an advantage that those with DNA out grew and out-ate the non DNA species. What we see today is the result of a huge lottery where one 'cell' hit the jackpot when a freak accident allowed the recording of amino acid positions in proteins. As for complex, eukaryotic evolution alone is a bizzare combination of prokaryotic symiotism.
Ok I see what your ... ( 1 week ago by W1930U7)
Ok I see what your saying, when the first living life forms formed, some had the ability to self-replicate and others did not. The ones that did, survived, the ones that didn't, died of old age and were no more. I get that. So, the first organism that accidentally had the ability to record the position of amino acid in proteins, then had the POTENTIAL to self-replicate correct?
Isn't real time! ... ( 6 days ago by makikaki15)
Isn't real time! It's much faster!!!
this was really ... ( 6 days ago by jakeyjakeyc)
this was really helpful, thank you.
This is proof of ... ( 22 hours ago by wookieproductions)
This is proof of Intelligent Design. Just Kidding LOL!!!



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