in this video, we're going to begin our lesson on pro carry attic flat modular structure. And so a pro carry attic flagellum consists of three parts that we have numbered down below 12 and three. And these numbers here in the text correspond with the numbers that we have down below in our image. And so that's important to keep in mind as we go through this video. Now, the first structural component of a pro carry Atiqullah gela is the filament and the filament is the primary component of the flagellum that's actually made of the globular protein called flow jelling. And so if you take a look at the image down below for number one, the filament notice that the filament is this blue structure that you see right here, it's the primary component of the flow gela, made of the globular protein fraudulent. Now, the second structural component of approach periodic flow gela is actually the hook and the hook is a flexible curved protein that connects the filament to the basal body, which is the third component down below here and so if we take a look at the image down below, notice that right here in green is the hook and so we can go ahead and label it as the hook. And notice that the hooks, main responsibility here in green is to connect the filament to the basal body, which is the third component over here. And so moving on to the third part, we have the basal body and the basal body is going to consist of this rod that you see here, along with these protein rings that we'll get to talk more about as we move forward. And so the basal body is the component that's going to be embedded in the membrane or in the membranes of the cell envelope by a series of protein rings. And so, taking a look at the basal body that's here. Once again, it consists of this rod that will directly attached to the hook and these protein rings. And so the basal body has the rod and the protein rings, as you can see by the bracket here. And so this is really the typical structure for a pro carry attic flat gela. And so, moving forward, we'll be able to talk a little bit about the differences between a gram positive Pro carry attic floor gela, as well as a gram negative pro carry attic flat gela. And so I'll see you all in our next video.

in this video, we're going to talk about the structure of the flow gela and Grand positive cells, specifically the structure of the grand positive basal body of flow gela. And so the basal bodies of the flow gela and Grand positive cells actually consists of two complex protein rings as we'll see down below in our image. And so what you'll notice is that these two rings of the basal body are numbered down below right here. And the first ring of the basal body is the M. S. Ring. Whereas the second ring of the basal body is the C. Ring. And so the M. S. Ring, is this ring that you see right here, going around from here to here, and the C. Ring is this other ring that's going around right here. And so these two rings are the two rings that are found in gram positive basal body. Now in this image, just to orient you a little bit better. What you're looking at here is this is zoomed into the flow gela. This is the flow gela, uh the structure of the flu rubella, the flu gela. And so notice that up here, what we have is the filament here. What we have is the hook. And then from here, all the way down what we have is the basal body. And notice that the basal body anchors the entire flow gela to the actual bacterial cell. And so you can see the layers of the grand positive cell here. The thick peptidoglycan layer is right here. Then you can see the peri plasm is in between the peptidoglycan layer and the plasma membrane and the plasma membrane is down below here. And so the basal body extends all the way through those layers of the cell envelope. And these rings are important for helping to anchor the entire uh flu gela to the cell. And once again the two rings are the M. S. Ring and the C. Ring. And we'll be able to compare these uh structures to the structures of the basal body and gram negative cells in our future videos. But for now this year concludes our lesson on the structure of the grand positive basal body, and I'll see you all in our next video.

in this video, we're going to talk about the structure of the flow gela and gram negative cells, specifically the structure of the gram negative basal body. And so because gram negative cells have an additional outer membrane that gram positive cells do not have the gram negative cell, basal bodies have to have additional protein rings to help anchor the flow gela to the cell. And so instead of having just two protein rings in the basal body, like what gram positive cells have, gram negative cells have four protein rings in the basal body. And so if we take a look at our image down below, notice on the far left over here, we're numbering all of the rings that are found in the basal body of gram negative cells, notice that the M. S. Ring and the C. Ring are still present and these are pretty much the same as they were and the gram positive cells. And really there's just two additional rings that are new here um that were not present in the grand positive cell basal bodies. And so this is going to be the presence of the L. Ring and the presence of the P. Ring. And so the L. Ring, what you can see is embedded right up here in the outer membrane itself. And again, this outer membrane is only found in gram negative cells. Grand positive cells do not have this outer membrane and so they have no need for the L. Rank. Now the P. Ring notice is embedded here in the pepto Glicken layer and partially in the peri plasm as well. And recall that gram negative cells have a very thin layer of pepto black hand. And so the P ring is going to fit right into that layer. And so these are the two additional rings that are found in the gram negative basal bodies that the grand positive basal bodies do not have. Uh And so this here uh really concludes our lesson on the structure of the gram negative basal body. And in our next lesson video will be able to do a side by side comparison of the gram negative and gram positive basal bodies. And so I'll see you all in our next video.

in this video, we're going to do a side by side comparison of the basal body flow gellar structure in gram negative cells and gram positive cells. And so once again, due to the presence of an outer membrane and gram negative cells, they actually require an additional two protein rings in the basal body that the gram positive basal body does not have. And so if we take a look at our image down below, we'll be able to do a side by side comparison of the two basal bodies. And so notice on the left hand side. Over here, we're showing you the flu jello structure for gram negative cells. And on the right hand side over here, we're showing you the flu jello structure for gram positive cells. And so notice that because gram negative cells have this additional outer membrane, that the grand positive cells do not have the gram negative cells required to additional protein rings in the basal body. And so, taking a look at the basal body which is extending right here in this region. Notice that the gram negative cells have to have the L. Ring which is embedded in the outer membrane. And they have to have the P. Ring embedded in the petito Glicken layer. And so those two rings are additional rings that are not found and gram positive cells. And so notice that the M. S. Ring and the C. Ring, our rings that are found in both the gram negative and gram positive basal bodies. And so really the difference between the two is focused around the addition of these two rings, the bell ring and the P. Ring in the gram negative cells. And so this year concludes our brief side by side comparison of gram negative versus gram positive basal body structure. And we'll be able to get some practice with these concepts as we move forward. So I'll see you all in our next video.