proteinstructures-全文預(yù)覽
【正文】 an inanic structure, required to make a protein active, is called Prosthetic Group and this is part of the Quaternary structure of Myoglobin and Haemoglobin. A similar Porphryn Ring, with Magnesium at its centre is the essential part of a Chlorophyll molecule. Fe Haem a prosthetic group MYOGLOBIN An oxygen carrier in muscle Here is another way of visualising tertiary the structure Tertiary Stucture Spot the Tertiary folding. Quaternary Structure Spot the Haem group GLOBULAR PROTEINS Proteins which fold into a ball or ‘globule’ like Myoglobin are called Globular Proteins. They tend to be soluble. The most mon group of Globular Proteins are ENZYMES which control the reactions in living cells. (They work because their Globular shape includes an Active Site). FIBROUS PROTEINS Fibrous proteins like Collagen, Silk, Keratin (hair) and Chitin (insect exoskeleton) tend to be insoluble and strong and so they have a structural role for support or protection. LYSOZYME An enzyme found in tears and mucus which acts as a strong antibacterial agent because it digests bacteria cell walls. It has 129 Amino Acids folded
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