There is a His residue labeled on the myoglobin structure below. What is that His residue commonly called? bound O, helix His bound to heme iron
There is a His residue labeled on the myoglobin structure below. What is that His residue commonly called? bound O, helix His bound to heme iron
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:### Transcription for Educational Website
#### Question
There is a His residue labeled on the myoglobin structure below. What is that His residue commonly called?
#### Image Explanation
The image depicts a 3D model of myoglobin structure, highlighting specific components:
- **Bound O₂ (oxygen):** Indicated in red, showing its position in relation to the heme group.
- **F helix:** Marked in green, suggesting its connection with the histidine residue.
- **His bound to heme iron:** Labeled in green, the histidine residue directly connected to the iron within the heme group.
#### Answer Choices
- ○ the conserved His residue.
- ○ the hydrophobic His residue.
- ○ the distal His residue.
- ○ the proximal His residue.
- ○ None of the above is correct.
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