|Heme groups are labeled in blue|
That's not all! Every worthy protein also has its fair share of regulatory mechanisms. Hemoglobin is so intricately controlled, that basic changes in our activity will directly effect its affinity for oxygen. The big 3 controls of hemoglobin oxygen affinity are carbon dioxide, pH and temperature. As carbon dioxide levels increase, as pH decreases, and as temperature increases the oxygen affinity of hemoglobin will decrease, causing the protein to release more oxygen. Contemplate on this for a moment, working muscle experiences all of these factors that call for the release of more oxygen, allowing for increased efficient energy production for prolonged function.
The question now becomes, if hemoglobin does so much for me, what can I do for it? The answer to that is to vote for hemoglobin as protein of the year! Let everyone know your appreciation of the greatest protein that never lets up.
Circulatory, Lymphatic and Immune Systems. N.p., 2008. Web. 27 Apr. 2011. <http://mcat-review.org/circulatory-lymphatic-immune-systems.php>.
Hemoglobin. N.p., n.d. Web. 27 Apr. 2011. <http://en.wikipedia.org/wiki/Hemoglobin#Oxygen_Saturation>.