The level of protein structure in which combinations of secondary protein structures (alpha helices, beta sheets, loop regions, and motifs) pack together to form folded shapes called domains. Disulfide bridges between cysteines in two different parts of the polypeptide chain along with other interactions between the chains play a role in the formation and stabilization of tertiary structure. Small proteins usually consist of only one domain but larger proteins may contain a number of domains connected by segments of polypeptide chain which lack regular secondary structure.

Descriptor ID	D017434
MeSH Number(s)	G02.111.570.820.709.610
Concept/Terms	Protein Structure, Tertiary Protein Structure, Tertiary Peptide Domain Domain, Peptide Domains, Peptide Peptide Domains Protein Domains Domain, Protein Domains, Protein Protein Domain Tertiary Protein Structure Protein Structures, Tertiary Tertiary Protein Structures

Below are MeSH descriptors whose meaning is more general than "Protein Structure, Tertiary".

Below are MeSH descriptors whose meaning is related to "Protein Structure, Tertiary".

Below are MeSH descriptors whose meaning is more specific than "Protein Structure, Tertiary".