primary structure

American  

noun

1. Biochemistry. the basic sequence of amino acids in a polypeptide or protein.

2. the basic parts of an aircraft, damage to which would be dangerous.

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primary structure Scientific  

1. The linear sequence of amino acids in a protein.

2. See also quaternary structure secondary structure tertiary structure

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Example Sentences

Inside the primary structure, visitors will find bright open spaces, elegant design details, and many communal living areas, ideal for those with a fondness for entertaining.

From MarketWatch • Mar. 31, 2026

The fuselage is the primary structure of an aircraft, forming the outer shell.

From Barron's • Dec. 3, 2025

The primary structure of a protein is composed of different amino acids coming together.

From Science Daily • May 30, 2024

Larger homes are now commonplace: The median new primary structure size in 2020 in the proposed wildlife ordinance area was 8,854 square feet, according to the city.

From Los Angeles Times • Jul. 30, 2023

An original language accounts for the proofs of unity embedded in the primary structure of the Aryan tongues, and science professes its full belief in such unity.

From Church and State as Seen in the Formation of Christendom by Allies, T. W. (Thomas William)