Can someone please explain the heme group/hemoglobin stuff?
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Can someone please explain the heme group/hemoglobin stuff?
Can someone explain it clearly and what exactly we need to know about it for the final?? Thank you!
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Re: Can someone please explain the heme group/hemoglobin stuff?
A transition metal is often found bound to a cage-like molecule, for example the porphyrin ligand. (4 nitrogens in a plane, creating a tetra-dentate square planar) Iron is bound to this porphyrin ligand, and therefore creates a HEME complex. A heme complex and a protein create myoglobin, which is the transport of oxygen in muscle cells. Hemoglobin has four myoglobin-like molecules that binds 4O2, and aids in the transport of O2 in the blood. I'm not 100% sure what we will be asked about this on the final, I would just make sure you know the concepts behind this. I hope this helps!
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- Posts: 37
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Re: Can someone please explain the heme group/hemoglobin stuff?
Alyssa Wilson 1E wrote:A transition metal is often found bound to a cage-like molecule, for example the porphyrin ligand. (4 nitrogens in a plane, creating a tetra-dentate square planar) Iron is bound to this porphyrin ligand, and therefore creates a HEME complex. A heme complex and a protein create myoglobin, which is the transport of oxygen in muscle cells. Hemoglobin has four myoglobin-like molecules that binds 4O2, and aids in the transport of O2 in the blood. I'm not 100% sure what we will be asked about this on the final, I would just make sure you know the concepts behind this. I hope this helps!
Thank you so much!
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