Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
A Circulatory Disease: Sickle Cell Anaemia
Member rating: No Rating | Words: | Submitted: Wed Sep 17 2003
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
A Circulatory Disease: Sickle Cell Anaemia Sickle Cell Anaemia isn't really a "disease" like AIDS or TB; it is more of a disorder. The main factor in this disorder is a protein called Haemoglobin. This protein is found in all red blood cells (erythrocytes1), and it is used fort he transportation of oxygen around the body to places where it is needed for respiration I.e. cells. As Haemoglobin is a protein it consists of one or more polypeptide chains that are folded into a complex three-dimensional shape. The shape is determined by the arrangement of the amino acids in the polypeptide chains. Haemoglobin is an example of a quaternary structured protein in that it is made up of more than one polypeptide chain. Each molecule of haemoglobin is consisted of up to four polypeptide chains. From the diagram you can clearly see that the shape of the haemoglobin molecule is rounded,...
To see the full version of this document, and 144,847 others
