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TJ Essay on haemoglobin
27/1/14




Haemoglobin: An Essay
What is it?

Haemoglobin is a globular protein molecule made up of four polypeptide chains coiled into
a helix shape. There are two beta pleated sheets (146 amino acids long) and two alpha
helices (141 amino acids long). Each chain folds in…

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TJ Essay on haemoglobin
27/1/14



respiring tissue as it is a by-product of respiration. Since HB has a lower affinity around CO2
oxygen will readily be released in order for cell tissue to respire further. A high O2
concentration and a low CO2 concentration (such as the ones found at…

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TJ Essay on haemoglobin
27/1/14



Variations in haemoglobin

As mentioned before different amino acid sequences in mammals allow for variation in their
individual HB molecules ability to associate and dissociate with O2 molecules. Environmental factors
have affected how organisms have adapted their haemoglobin molecules in order to be the most…

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