Reactome: A Curated Pathway Database

Removal of fibrillar collagen N-propeptides

Stable Identifier
R-HSA-2002428
Type
Reaction
Species
Homo sapiens
Compartment
Locations in the PathwayBrowser
Summation

Fibrillar collagen is synthesized in the ER as procollagen with N- and C-terminal propeptides flanking the collagenous domain (Bellamy & Bornstein 1971). These propeptides, particularly the C-propeptide, inhibit fibril formation (Kadler et al. 1987). Type V collagen N-propeptide removal is partial, and reported to be mediated by BMP-1 which cleaves between the proline/arginine-rich protein domain and the variable domain of the alpha1 chain and between the small and the large collagenous domain of alpha3 chain (refs. in Colige et al. 2005). Mutated propeptide collagen type V (COL5A1) is known to form abnormal trimers and non-functional fibrils (Takahara et al. 2002).

Literature References
Participants
Participant Of
This entity is regulated by:
Title Physical Entity Activity
metalloendopeptidase activity of Procollagen N-proteinases [extracellular region] Procollagen N-proteinases [extracellular region] metalloendopeptidase activity (0004222)
Orthologous Events