Biology for Computer Engineers:Part 1(www.ubio.in)

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[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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[object Object],[object Object],C O H

[object Object],[object Object],[object Object],Glycine – simplest amino acid (NH2-CH2-COOH)

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[object Object],Sheet formation Helix formation Each strand in a sheet is represented by a pointed ribbon

[object Object],A protein secondary structure might be a sequence of sheets and helices. The secondary structure folds in 3-d space due to attractive forces. This creates the tertiary structure.

[object Object],Collagen triple helix: There are three polypeptide chains intertwined with each other to form the thread-like collagen structure. Collagen is used to make long muscular tissue like ligaments Haemoglobin consists of 4 polypeptide chains, each containing a heme group (that contains iron, shown in green)

[object Object],Impact of Primary Structure modification: the curious case of Sickle Cell Anaemia Amino-acid in position 6 of one of the haemoglobin sub-units is different in people with Sickle Cell Anaemia. Haemoglobin molecules float around in red blood cells (RBCs). Oxygen binds to them in lungs and unbinds in tissues. This is how tissues receive Oxygen. In de-oxygenated state, modified haemoglobin molecules stick together to form long chain polymers which then bundle together like a rigid multi-strand braid. The braid causes affected RBCs to bend like a sickle. They become normal again upon oxygenation. Repeated change in structure causes rupture and destruction of RBCs de-oxy oxy de-oxygenated state

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Biology for Computer Engineers:Part 1(www.ubio.in)

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Biology for Computer Engineers:Part 1(www.ubio.in)