PROTEINThe Unit Of Living Organisms
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PROTEIN
o Protein is one of the basic building blocks of the human body.
o Body makes Proteins itself by the process of translation.
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PROTEIN THE UNIT OF LIVING ORGANISMS
Structural proteins Regulatory or hormonal proteins Enzymes (catalytic proteins) Transport proteins Immune Proteins Contractile Proteins Storage Proteins
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PROTEIN THE UNIT OF LIVING ORGANISMS
Structural Proteins fibrous and stringy and provide support. e.g.; include keratin, collagen, and elastin.
Hormonal Proteins messenger proteins which help to coordinate
certain bodily activities. e.g.; insulin, oxytocin, and somatotropin.
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PROTEIN THE UNIT OF LIVING ORGANISMS
Enzymes (catalytic proteins) proteins that facilitate biochemical reactions. increase the rate of a reaction. act specifically with only one reactant (called a
substrate) to produce products. If even one enzyme is missing or defective, the
results can be disastrous. e.g.; lactase and pepsin.
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PROTEIN THE UNIT OF LIVING ORGANISMS
Transport Proteins are carrier proteins which move molecules from
one place to another around the body. e.g.; hemoglobin and cytochromes.
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PROTEIN THE UNIT OF LIVING ORGANISMS
Immune Proteins(Antibodies) specialized proteins involved in defending the
body from antigens (foreign invaders). Contractile Proteins
responsible for movement. proteins are involved in muscle contraction and
movement. e.g.; actin and myosin
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PROTEIN THE UNIT OF LIVING ORGANISMS
Storage Proteins a source of amino acids for growing organisms, serve as reserves of metal ions and amino acids can be mobilized and utilized for the
maintenance and growth of organisms. particularly prevalent in plant seeds, egg whites,
and milk. e.g.; ovalbumin and casein.
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PROTEIN AS NUTRIENT
Around 40% of the body’s dry matter is protein.
If body loses more than 14% of its Protein store, it could lead to severe health consequences. Loss of muscle mass causing physical weakness. Fatigue A weakened immune system. Abnormal blood clotting. Kwashiorkor Marasmus Brittle nails
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REFERENCES
http://www.chemistryexplained.com/St-Te/Storage-Protein.html#ixzz1kaSRE4el
http://www.ncbi.nlm.nih.gov/books/NBK26830/
Book: Molecular Genetics Of Plants. Page # 116.
Book: Essential Cell Biology by Alberts. Bray. Johnson. Lewis. Raff. Roberts. Walter. Chapter # 5, Page # 133.
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