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Haemoglobin and Collagen


Haemoglobin

Haemoglobin is an example on a globular protein, a protein that appears to curl up into a ball. It is a
pigment which is found in red blood cells and carries oxygen. Haemoglobin has four polypeptide
chains, two and two . Each of these chains winds…

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when oxygen levels are low, the valine molecules stick together and this causes the haemoglobin
molecules stick together and this pulls the red blood cell out of shape.



Collagen

Collagen is a fibrous protein, meaning that it is structured as long strands. It is found in skin, tendons,
bones, teeth,…

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