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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
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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### 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.
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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