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The correct option for the metal ion present in the active site of myoglobin, hemocyaninand vitamin B12, respectively, is
- a)iron, iron and zinc
- b)molybdenum, iron and copper
- c)iron, copper and cobalt
- d)molybdenum, copper and cobalt
Correct answer is option 'C'. Can you explain this answer?
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Metal Ions in Active Sites of Myoglobin, Hemocyanin, and Vitamin B12
The correct option for the metal ion present in the active site of myoglobin, hemocyanin, and vitamin B12 are:
a) iron, iron and zinc
b) molybdenum, iron and copper
c) iron, copper and cobalt
d) molybdenum, copper and cobalt
The correct answer is option 'C'. Let's discuss each of these metal ions in detail.
Iron in Myoglobin
Myoglobin is a protein found in muscles that binds and stores oxygen for use during muscle contractions. The metal ion present in the active site of myoglobin is iron. The iron ion is coordinated to a nitrogen atom of a histidine residue and four nitrogen atoms of a porphyrin ring, forming a heme group. The heme group is responsible for binding oxygen.
Copper in Hemocyanin
Hemocyanin is a protein found in the blood of some invertebrates that transports oxygen. The metal ion present in the active site of hemocyanin is copper. Copper ions are bound to the protein through histidine residues forming a copper center. Oxygen is bound to the copper center in a reversible manner.
Cobalt in Vitamin B12
Vitamin B12 is a complex organic molecule that is essential for the proper functioning of the nervous system. The metal ion present in the active site of vitamin B12 is cobalt. The cobalt ion is coordinated to a nitrogen atom of a porphyrin ring and a nitrogen atom of a dimethylbenzimidazole group, forming a cobalamin molecule. The cobalamin molecule is involved in the transfer of methyl groups in several metabolic pathways.
Conclusion
In summary, the metal ions present in the active sites of myoglobin, hemocyanin, and vitamin B12 are iron, copper, and cobalt, respectively. These metal ions play crucial roles in the proper functioning of these proteins.
The correct option for the metal ion present in the active site of myoglobin, hemocyanin, and vitamin B12 are:
a) iron, iron and zinc
b) molybdenum, iron and copper
c) iron, copper and cobalt
d) molybdenum, copper and cobalt
The correct answer is option 'C'. Let's discuss each of these metal ions in detail.
Iron in Myoglobin
Myoglobin is a protein found in muscles that binds and stores oxygen for use during muscle contractions. The metal ion present in the active site of myoglobin is iron. The iron ion is coordinated to a nitrogen atom of a histidine residue and four nitrogen atoms of a porphyrin ring, forming a heme group. The heme group is responsible for binding oxygen.
Copper in Hemocyanin
Hemocyanin is a protein found in the blood of some invertebrates that transports oxygen. The metal ion present in the active site of hemocyanin is copper. Copper ions are bound to the protein through histidine residues forming a copper center. Oxygen is bound to the copper center in a reversible manner.
Cobalt in Vitamin B12
Vitamin B12 is a complex organic molecule that is essential for the proper functioning of the nervous system. The metal ion present in the active site of vitamin B12 is cobalt. The cobalt ion is coordinated to a nitrogen atom of a porphyrin ring and a nitrogen atom of a dimethylbenzimidazole group, forming a cobalamin molecule. The cobalamin molecule is involved in the transfer of methyl groups in several metabolic pathways.
Conclusion
In summary, the metal ions present in the active sites of myoglobin, hemocyanin, and vitamin B12 are iron, copper, and cobalt, respectively. These metal ions play crucial roles in the proper functioning of these proteins.
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Option C is correct one.
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The correct option for the metal ion present in the active site of myoglobin, hemocyaninand vitamin B12, respectively, isa)iron, iron and zincb)molybdenum, iron and copperc)iron, copper and cobaltd)molybdenum, copper and cobaltCorrect answer is option 'C'. Can you explain this answer?
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The correct option for the metal ion present in the active site of myoglobin, hemocyaninand vitamin B12, respectively, isa)iron, iron and zincb)molybdenum, iron and copperc)iron, copper and cobaltd)molybdenum, copper and cobaltCorrect answer is option 'C'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about The correct option for the metal ion present in the active site of myoglobin, hemocyaninand vitamin B12, respectively, isa)iron, iron and zincb)molybdenum, iron and copperc)iron, copper and cobaltd)molybdenum, copper and cobaltCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The correct option for the metal ion present in the active site of myoglobin, hemocyaninand vitamin B12, respectively, isa)iron, iron and zincb)molybdenum, iron and copperc)iron, copper and cobaltd)molybdenum, copper and cobaltCorrect answer is option 'C'. Can you explain this answer?.
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