protein structure

Amino acid arrangement

Protein structure refers to the three-dimensional arrangement of a protein molecule, which determines how it functions.

Biochemists describe four levels: primary (the sequence of amino acids), secondary (local folding patterns like helices and sheets), tertiary (the overall 3D shape), and quaternary (how multiple protein chains combine).

The drug works by disrupting the virus's protein structure.

function

active site

Enzyme region binding substrates

ligand · receptor · enzyme · cofactor · induced fit · lock and key · specificity · affinity · regulation

hierarchy

folding

Bending something over itself

backbone · loop · turn · coil · fold · topology · subunit · oligomer · monomer · dimer

composition

amino acid

Protein's molecular subunit

sequence · N-terminus · C-terminus · side chain · peptide bond · backbone · hydrogen bond · van der Waals · covalent bond

stability

folding

Bending something over itself

chaperone · entropy · enthalpy · thermodynamics · kinetics · intermediate · amyloid · fibril · prion

determination

crystallization

Forming ordered solid structure

refinement · mass spectrometry

drugdesign

target

Object of pursuit

antagonist · affinity · selectivity · therapeutic · biologics · antibody

Opposites
folded vs. unfolded state

protein structuredenaturation

Structural breakdown of proteins

Family

structure, protein

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