Raptor, N-terminal CASPase-like domain (IPR029347)

Short name: Raptor_N

Overlapping homologous superfamilies


Domain relationships



Human Raptor is involved in the control of the mammalian target of rapamycin complex 1 (mTORC1) activity which regulates cell growth and survival, and autophagy in response to nutrient and hormonal signals. It functions as a scaffold for recruiting mTORC1 substrates [PMID: 12150925].

All Raptor orthologs contain a unique conserved region in their N-terminal half (raptor N-terminal conserved, also called the RNC domain) followed by three HEAT (huntingtin, elongation factor 3, A subunit of protein phosphatase 2A and TOR1) repeats and seven WD-40 repeats near the C terminus [PMID: 12150925, PMID: 12150926].

This entry reprsents the RNC domain, which consists of 3 blocks with at least 67 to 79% sequence similarity and is predicted to have a high propensity to form alpha helices. The RNC domain is characterised by the presence of invariant catalytic Cys-His dyad, which is structurally and evolutionarily related to known caspases, suggesting that the raptor proteins may have protease activity [PMID: 15450605].

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.