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In this video we want to distinguish between some terms that are commonly used to refer to proteins.
00:06
So first we have the building block of proteins, the monomer, which are amino acids.
00:15
So the smallest component of a protein, they contain a carbon bonded to a hydrogen group, an r group, which can be variable, can be as simple as another hydrogen atom, or like a hydrocarbon chain, or you know some functional group.
00:31
And then you have a carboxyl group and an amino group.
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And there's going to be 20 different amino acids, all of them except for glycine, which has r group equals to h, are going to be chiral, so you have the enantiomeric forms, and so on.
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And when you have two amino acids that react together in a condensation reaction, so you're losing water and you form a peptide bond, you get a dipeptide.
01:11
So dipeptide, di means two, is just literally two amino acids put together.
01:15
You start at the amino terminal, so the nh2 of the first one, and then the carboxyl group of it bonds to the amino of the other one, forming that peptide bond.
01:24
Then if you have many amino acids, so more than two, all bonded together with peptide bonds, that's what makes a peptide...