The iron (Fe) ion in the heme group of hemoglobin is bound to a: OA) Cystine B) Histidine C) Proline D) Glutamic acid E) Valine
The iron (Fe) ion in the heme group of hemoglobin is bound to a: OA) Cystine B) Histidine C) Proline D) Glutamic acid E) Valine
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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Question
Transcribed Image Text:The iron (Fe), ion in the heme group of hemoglobin is bound to a:
OA) Cystine
OB) Histidine
C) Proline
OD) Glutamic acid
E) Valine
Expert Solution
Step 1
Our red blood cells (RBCs) are composed of hemoglobin that helps to transport oxygen throughout the body. Adult hemoglobin is composed of 2 types globin chains: α & β.
Hemoglobin is composed of 2 units of α & β globin chains, giving it the structure α2β2. Thus, there are 4 sub-units & each subunit contains a heme group.
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