$HO_2^-$to one Fe(III) only
Hemerythrin Oxygen Binding Mechanism
Hemerythrin is a protein that facilitates oxygen transport in some organisms.
The mechanism involves the specific binding form of oxygen within the protein's active site.
- Oxygen ($O_2$) binds to hemerythrin and is converted into the hydroperoxide anion, represented as $HO_2^-$.
- This $HO_2^-$ species then coordinates with a single iron ion present in the protein.
- The iron ion involved in this binding is in the ferric state, denoted as Fe(III).
Therefore, during oxygen transport by hemerythrin, oxygen is bound as $HO_2^-$ to one Fe(III) center.
Important Questions from Bioinorganic Chemistry
Consider the following transformation reactions in the context of co - enzyme B12
A. 1, 2 - Carbon shift
B. Hydration of CO2
C. Benzene to phenol
D. Dimethyl sulfide to dimethyl sulfoxide
The correct statement(s) for co - enzyme B12 is / are
During the binding of O2 to myoglobin (consider 'heme' in xy-plane), the molecular orbital of O2 and atomic orbital of Fe involved in the formation of the σ-bond is
In the catalytic cycle of Cytochrome P450, the generation of [(porphyrin)+•FeIV(O)] from [(porphyrin)FeIII(OOH)] involves
Match List I with List II
List I
List II
Metalloprotein
Metal
A.
carboxypeptidase A
I.
Mn
B.
oxygen-evolving complex
II.
Fe
C.
hemerythrin
III.
Ni
D.
coenzyme F-430
IV.
Zn
Choose the correct answer from the options given below:
In solution, Vaska's complex is known to bind O2 reversibly. In the product, oxidation state of the metal ion center coordination geometry and mode of binding of O2, respectively are
