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Study of carbon containing compounds. Originally encompassed only compounds isolated from biological sources because it was thought that the molecules contained a “life-force”. The definition of organic chemistry now consists of man-made and biological molecules consisting mostly of Carbon and Hydrogen plus Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, Sulfur, and Phosphorus.
Proteins are assembled from amino acids using the information encoded in genes. (one gene contains the information for one entire enzyme)
Each protein has its own unique amino acid sequence that is specified by the nucleotide sequence of the gene encoding this protein. Each three-nucleotide combination, called a codon, stands for an amino acid.
α -keratin contains long strands of alpha helix structures. Found in hair, hooves, nails, skin and wool. (fibrous protein)
Silk These pleated sheet structures make the material resistant to stretching. The small R groups make the chains compact giving the material a smooth feel. The uniform surface makes it a good reflector of light.
Artificial Silk Polymer continues on in each direction
Where do biological molecules come from? USAToday Posted 8/8/2006 This is an artist’s rendition of the cosmic chemistry cycle. Stars eject matter into space. Diffuse gas clouds condense into stars and planets or comets and meteorites.