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Please Indicate the d-electron count for the iron sulfur protein in the picture. A) 6 B) 4 C) 8 D) 2 E) 10

Please Indicate the d-electron count for the iron sulfur protein in the picture. A) 6 B) 4 C) 8 D) 2 E) 10

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please Indicate the d-electron count for the iron sulfur protein in the picture.

A) 6

B) 4

C) 8

D) 2

E) 10 

The image shows a structural diagram of an iron-sulfur complex. The central atom, labeled as "Fe" which stands for iron, is coordinated by four sulfur (S) atoms that form part of cysteine amino acid residues, indicated by the surrounding CH2-CH(NH2)-COOH groups. Key features of the structure include: 1. **Iron Coordination**: The iron atom (Fe) is at the center of the complex, bonded to four sulfur atoms. This type of coordination is commonly found in iron-sulfur clusters, which are important in biological processes such as electron transport. 2. **Cysteine Residues**: Each sulfur atom is part of a cysteine residue. The residues are depicted with a CH2 group attached to an NH2 (amino) group and a COOH (carboxyl) group, forming the backbone typical of amino acids. 3. **Geometrical Arrangement**: The sulfur atoms and the iron atom create a roughly tetrahedral or distorted geometric configuration. This is a typical arrangement in iron-sulfur clusters allowing efficient electron transportation. This type of cluster is vital in several enzymatic reactions and is a fundamental component in the active sites of many proteins, highlighting its biological significance.
Transcribed Image Text:The image shows a structural diagram of an iron-sulfur complex. The central atom, labeled as "Fe" which stands for iron, is coordinated by four sulfur (S) atoms that form part of cysteine amino acid residues, indicated by the surrounding CH2-CH(NH2)-COOH groups. Key features of the structure include: 1. **Iron Coordination**: The iron atom (Fe) is at the center of the complex, bonded to four sulfur atoms. This type of coordination is commonly found in iron-sulfur clusters, which are important in biological processes such as electron transport. 2. **Cysteine Residues**: Each sulfur atom is part of a cysteine residue. The residues are depicted with a CH2 group attached to an NH2 (amino) group and a COOH (carboxyl) group, forming the backbone typical of amino acids. 3. **Geometrical Arrangement**: The sulfur atoms and the iron atom create a roughly tetrahedral or distorted geometric configuration. This is a typical arrangement in iron-sulfur clusters allowing efficient electron transportation. This type of cluster is vital in several enzymatic reactions and is a fundamental component in the active sites of many proteins, highlighting its biological significance.
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