RNA Splicing

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A 3D animation shows the crucial RNA editing step called splicing


TRANSCRIPT:
As DNA is transcribed into RNA it needs to be edited to remove non-coding regions, or introns, shown in green. This editing process is called splicing, which involves removing the introns, leaving only the yellow, protein-coding regions, called exons.

RNA splicing begins with assembly of helper proteins at the intron/exon borders. These splicing factors act as beacons to guide small nuclear ribo proteins to form a splicing machine, called the spliceosome. The animation is showing this happening in real time. The spliceosome then brings the exons on either side of the intron very close together, ready to be cut. One end of the intron is cut and folded back on itself to join and form a loop. The spliceosome then cuts the RNA to release the loop and join the two exons together. The edited RNA and intron are released and the spliceosome disassembles.

This process is repeated for every intron in the RNA. Numerous spliceosomes, shown here in purple, assemble along the RNA. Each spliceosome removes one intron, releasing the loop before disassembling. In this example, three introns are removed from the RNA to leave the complete instructions for a protein.
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Visit us in Cold Spring Harbor, Brooklyn, or Sleepy Hollow!

DNALearningCenter
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its incredible how cells can do this so insanely fast guided by nothing but chemistry

swirl
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THANK YOU! I've been watching so many long videos to understand this concept, but this video literally made it so simple.

rebekahwoodall
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Love the real time animations and explanations! Would also love to see an "advanced" version of this with group I & II self-splicing introns too. tybg

jasonhauzel
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I was feeling inside a cell with this animation xD
Bravo!

MrEfraimfc
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Of course there is a master mind behind all of this...
The animators ;)

Sunshineofblood
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Absolutely remarkable. Thank you for the video.

Flanker-NineZero
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Damn why so many comments about god here? I don't remember him slipping a note about RNA splicing into the new testament. Praise be to the hard-working scientists who worked out how this incredible process works and the animators for illustrating it for us.

maxprokopenko
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this is so adorable tiny little enzymes and mrna awhh

uwauwauwa
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Excellent presentation!!! I'm subscribed.

l.m.
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Interesting. I would have thought it would be faster in real time (as in you wouldn't be able to see the process happening-that's how fast it would be)

shiney
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Fantastic video! Explains splicing very effectively so thank you for that!

mayashaw
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What software was this made with? I like the style.

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yes, it is. a debranching enzyme does that.

thesulocan
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what happen to the intron next? is it will be degraded?

edahyphen
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What an awfully large and complex protein for the simple task of cutting a few carbon bonds

Celtjak
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thanx for uploading such a great videos!

rajanipatil
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You may check wiki or/and check research reviews.

钟振声
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What force causes the splicozomes to move toward an RNA strand? After all, to a splicozome, a cell is probably be the size of Rhode Island. What makes them show up precisely where and when they are needed?

JCAH
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"I will praise You, for I am fearfully and wonderfully made; Marvelous are Your works, And that my soul knows very well." (Psalm 139:14 NKJ)

briancrane