Term Name:	collagen type XXI trimer
Synonyms:
Definition:	A collagen homotrimer of alpha1(XXI) chains; type XXI collagen triple helices found in the extracellular matrix component of blood vessel walls and in the cytoplasm of cultured human aortic smooth muscle.
Ontology:	GO: Cellular Component [GO:1990320]    QuickGO    AmiGO