Social Media Management basic
Which protein structural level refers to the amino-acid sequence?
Answer
Primary
Explanation
The **primary structure** is the sequence of amino acids linked by peptide bonds and includes any disulfide bonds. Secondary structure refers to local patterns such as an α-helix; tertiary structure describes a folded polypeptide; quaternary structure involves multiple subunits. **Key takeaway:** Primary structure is the polypeptide’s sequence. **Glossary:** Polypeptide: chain of amino-acid residues.
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