quaternary structure
[kwə-TER-nuh-ree STRUK-chur]
nounpl: quaternary structures
estrutura quaternária
1. The three-dimensional arrangement of multiple polypeptide chains (subunits) in a protein complex, and the interactions between them
The quaternary structure of hemoglobin consists of four subunits that work together to bind and transport oxygen
A estrutura quaternária da hemoglobina consiste em quatro subunidades que trabalham juntas para ligar e transportar oxigênio
2. The spatial organization and relative positioning of separate protein molecules or subunits that form a multi-subunit protein complex
Understanding the quaternary structure is essential for studying how proteins function in living cells
Compreender a estrutura quaternária é essencial para estudar como as proteínas funcionam nas células vivas
This is a specialized scientific term used exclusively in academic and professional biochemistry, molecular biology, and life sciences contexts in both English-speaking and Portuguese-speaking countries. It is taught universally in advanced biology and chemistry courses as part of the four levels of protein structure organization.
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