Protein Sythesis Animation

Protein Sythesis Animation-67
A list of highly toxic proteins or peptides would also include the venoms of many snakes, and ricin, the toxic protein found in castor beans.Despite the variety of their physiological function and differences in physical properties--silk is a flexible fiber, horn a tough rigid solid, and the enzyme pepsin water soluble crystals--proteins are sufficiently similar in molecular structure to warrant treating them as a single chemical family.

A list of highly toxic proteins or peptides would also include the venoms of many snakes, and ricin, the toxic protein found in castor beans.Despite the variety of their physiological function and differences in physical properties--silk is a flexible fiber, horn a tough rigid solid, and the enzyme pepsin water soluble crystals--proteins are sufficiently similar in molecular structure to warrant treating them as a single chemical family.

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In the form of hemoglobin, myoglobin and various lipoproteins, they effect the transport of oxygen and other substances within an organism. Protein based antibiotics and vaccines help to fight disease, and we warm and protect our bodies with clothing and shoes that are often protein in nature (e.g. The deadly properties of protein toxins and venoms is less widely appreciated.

Botulinum toxin A, from , is regarded as the most powerful poison known.

The distinction between proteins and peptides is their size.

Peptides are in a sense small proteins, having molecular weights less than 10,000.

These differences all point to internal salt formation by a proton transfer from the acidic carboxyl function to the basic amino group.

The resulting ammonium carboxylate structure, commonly referred to as a zwitterion, is also supported by the spectroscopic characteristics of alanine.

Those amino acids having green colored names are essential diet components, since they are not synthesized by human metabolic processes.

The best food source of these nutrients is protein, but it is important to recognize that not all proteins have equal nutritional value.

Carbohydrates are roughly 50% oxygen, and like the lipids, usually have less than 5% nitrogen (often none at all).

Proteins and peptides, on the other hand, are composed of 15 to 25% nitrogen and about an equal amount of oxygen.

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