![]() And also because it has double bond character here. And so that makes there are peptide bond, a uh ah, Polar peptide bond. So essentially, what happening if we draw the dipole moment, you could see that there's electron density over here and less electron density over here because it's positive. And so across this peptide bond, there's actually a die poll moment, so you can see that it is a polarized, uh, peptide bond. So notice with this resident structure, we now have a double bond that's present on the, uh, peptide bond and then on either side over here, what we have is a negative charge on our carbonnel group oxygen and a positive charge on the nitrogen. And over here we have our other residents structure. And so we've got our residents brackets here and our residents arrows. And then this double bond that's on the Carbonnel Group will go up to the oxygen. And so this particular lone pair that's right here on the nitrogen will actually come down to the peptide bond. And so what you'll notice is that there's actually some resonance that's present between some of these bonds of the peptide group. And it includes the two Alfa carbons which are right here so we can go ahead and circle these Alfa carbons, which are again connected to the our groups. It includes the atoms of the amino group which are these two atoms right here. And again, the atoms of the peptide group include the Carbonnel Group, which is these two atoms right here. Now, notice that the atoms that are in pink here are part of the peptide group. And these two residues are joined by the peptide bond here, which is in red and so we can see our peptide bond is in red. And then over here we have a methyl group, so it's gotta be an Allen in residue. So we've got this our group here, which is just a hydrogen, so it must be a glistening residue. And you could see that because we've got these two are groups which are in blue. And so what you'll see is that what we have is a dye peptide. We're going to circle all of the Alfa carbons and draw the residents arrows for the bonds of the peptide group. So in this example, what we're gonna do is consider the peptide group. And so we'll be able to see that in our example down below. And so there is a total of six atoms that are a part of the peptide group, and those six Adams include the Carbonnel Group, Adams, the Amino group Adams and the two adjacent Alfa Carbons. And so the specific atoms of the peptide group are the two peptide bond atoms, or the two atoms that air directly involved in the peptide bond, as well as therefore, neighbors or the four atoms that these two, um, atoms are bonded to. But the peptide group is referring to specific atoms that air around the peptide bond. And so again, the peptide bond is a specific Covalin bond. And so these atoms that are around the peptide bond are part of the peptide group. And the atoms that are around the peptide Bond exhibit special characteristics and these special characteristics that they display are critical to the overall shape of a protein. So recall that the peptide bond is an, um, I'd covalin linkage. So now that we know about the peptide bond and primary protein structure, before we get to secondary protein structure, we're going to talk about the peptide group.
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