00:01
So welcome to this video and we are trying to assess this is mrna and we are talking about very important structures known as hairpings or air loops okay and air loops are the structures that look like like this this could be a hair loop okay these are very important structures these are a sample of a a hair loop that forms in an rna.
00:34
So how do you define a hair look? okay.
00:38
So this is what you call it's an unpaired loop of messenger, okay, a loop of messenger rna, okay, that created when a marine strand folds and form.
00:54
So this strand normally could be straight, and then it kind of folds and forms a loop.
01:03
So you see this happens when base pairs, this is pair with one another on the same strand.
01:18
On the same strand.
01:21
I'm just going to give two examples of these strands.
01:25
Let's say option a.
01:29
I'm going to write a sequence and then we see whether it can form a hair loop.
01:34
You can have cg, another cg, we have c .a, a, then a g, g.
01:46
Then cg cg okay this could be a sequence that can form a hair look because if you look at this structure or that are the sequence we are told that ability of this sequence to are the bases on this sequence to basis on this strand to buy to kind of pair with one another will form a hair look okay because it's it's like you're trying to pull them it's like you're trying to pull these bases together.
02:17
Okay? so if you pull them together, you kind of form a hair loop.
02:24
Understand? so that's how air loops form.
02:26
So i'm going to write it in such a way that we have other base.
02:34
C pairing with g, then g pairing with c, then c pairing with g, then c pairing with g, then g pairing with see okay then see pairing with g then you have three a's on top there okay so we we kind of have a structure that looks like this so this could be a structure okay then you have these uh pairing down here okay like that so you see we have the three is one two and three but you see uh down here the same have uh we have best pairing and this base pairing happened on the same strand.
03:20
So this is a perfect example of a sequence that can give you a hair loop...