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Heme complex and myoglobin/hemoglobin

Posted: Sat Dec 07, 2019 9:39 pm
by Connor Ho 1B
Can someone please explain how myoglobin/hemoglobin are related to the heme complex, and what we should know about it for the exam?

Re: Heme complex and myoglobin/hemoglobin

Posted: Sat Dec 07, 2019 9:44 pm
by Sidharth D 1E
A heme complex attached to a protein is what makes up myoglobin (which can attach to a single O2 molecule. Four myoglobin together make up a single hemoglobin.

Re: Heme complex and myoglobin/hemoglobin

Posted: Sun Dec 08, 2019 5:52 pm
by Sofia Barker 2C
Each myoglobin binds to an O2, and four myoglobin make up a hemoglobin. Remember that a heme complex is made up of an iron ion bound to tetradentate porphyrin.

Re: Heme complex and myoglobin/hemoglobin

Posted: Sun Dec 08, 2019 11:10 pm
by Julie Park 1G
Myoglobin:
x1 O2 possible bonding
Transports O2 in muscle cells

Hemoglobin:
x4 O2 possible bonding
Involved in red blood cells

Also, the lone pair on CO can bind to hemoglobin. These leads to "suffocation at the molecular level", and explains why CO is toxic