Myoglobin  [ENDORSED]

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Cecilia Jardon 1I
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Postby Cecilia Jardon 1I » Fri Dec 07, 2018 1:48 am

Is myoglobin hexadentate? because I know that the porphyrin is tetradentate but then when the iron atom binds with the histidine and that oxygen would that make it hexadentate?

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Re: Myoglobin  [ENDORSED]

Postby Chem_Mod » Sat Dec 08, 2018 7:16 am

The iron atom in myoglobin has six bonds but is not hexadentate as it binds to three different ligands.

Hexadentate means one ligand that forms six bonds.
The only hexadentate ligand I discussed in class is EDTA.

Margaret Akey
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Re: Myoglobin

Postby Margaret Akey » Sat Dec 08, 2018 10:50 am

so the iron atom is tridentate?

Samantha Burmester 3H
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Re: Myoglobin

Postby Samantha Burmester 3H » Sat Dec 08, 2018 8:07 pm

Margaret Akey wrote:so the iron atom is tridentate?

No, because tridentate means 1 ligand bonding three times

But in this case, it is 3 different ligands.

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