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Purposeful Universe Nov 22, 2021 10:34:42 AM < 1 min read

Proteins, Amino Acids, and Evolution [VIDEO]

Proteins are fundamental to the structure of every organism. Proteins are formed by different combinations and sequences of amino acids, and chemistry and physics dictate what structures proteins form. This means that, in a way, proteins demonstrate the existence and consequences of order in our world.

 

Video Transcript:

Proteins are fundamental to the structure of, you see, every organism.

And proteins are made of amino acids and they fold into a protein.

There's, in a sense, an infinite possible number of combinations of strings of amino acids — these little balls you can put together.

There's 20 of them that are biologically relevant, but anytime you string together proteins and you put them 
into, like, the aqueous environment of the cell, if they fold, they fold into only two really 
stable structures. They're called alpha helices and beta sheets.

So if evolution were to run again and you had proteins they would still fold into alpha helices and beta sheets, because that's what the chemistry and physics dictates.

More biological evolution resources

 

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Purposeful Universe

The Purposeful Universe seeks to explore and present, through award winning videos, the abundant order in nature that funnels biological systems toward increasing levels of complexity and sophistication—suggesting that human life is the purposeful outcome of a complex, ordered system.