Question
Among the following metalloproteins, the pair(s) of non-heme proteins is (are)
Identifying Non-Heme Proteins
The question asks to identify pairs of non-heme proteins. Non-heme proteins are proteins that do not contain a heme prosthetic group (an iron-containing porphyrin ring). They often contain other metal ions.
Protein Classification
Let's classify the proteins mentioned:
- Hemoglobin: Contains a heme group. It is a heme protein.
- Myoglobin: Contains a heme group. It is a heme protein.
- Hemocyanin: Contains copper, but no heme group. It is a non-heme protein.
- Carboxypeptidase: Contains zinc, but no heme group. It is a non-heme protein.
- Hemerythrin: Contains iron, but not in a heme structure. It is a non-heme protein.
- Carbonic anhydrase: Contains zinc, but no heme group. It is a non-heme protein.
- Cytochrome P-450: Contains a heme group. It is a heme protein.
Evaluating Pairs
Now, let's check the pairs based on this classification:
- Option A (Hemoglobin and Myoglobin): Both are heme proteins. Incorrect.
- Option B (Hemocyanin and Carboxypeptidase): Both are non-heme proteins. Correct.
- Option C (Hemerythrin and Carbonic anhydrase): Both are non-heme proteins. Correct.
- Option D (Cytochrome P-450 and Hemocyanin): Cytochrome P-450 is a heme protein, while Hemocyanin is a non-heme protein. This pair is not exclusively non-heme proteins. Incorrect.
Therefore, the correct pairs consisting of non-heme proteins are Option B and Option C.
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Important Questions from Bioinorganic Chemistry
- The correct statement(s) about enterobactin (ent) is(are)
- The study of interaction of drugs with the target molecule through binding interaction is called:
- The key groups of organic molecules that help in chelation of metal ions are
I. – COOH
II. – SH
III. – $CH_3$
IV. – CHO
Choose the correct answer from the codes given below : - Cytochrome P450 (CYP) enzymes catalyze stereoselective C–H hydroxylation of hydrocarbons in the presence of $O_2$. The correct statement(s) about the structure and activity of CYP is/are
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