What are the 4 levels of a structure of a protein? describe each one.

“Primary - where amino acids are in the correct order in the polypeptide chain.”

“Secondary - where small structures within the chain begin to form (including alpha helices and beta pleated sheets).”

“Tertiary - where more complex structures form due to more bonds forming. This is the final, three-dimensional structure of a protein with only one chain.”

“Quaternary - when the final protein consists of more than one polypeptide chain.”

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