Transmembrane receptor, patched (IPR004766)

Short name: TM_rcpt_patched

Overlapping homologous superfamilies


Family relationships


Patched (Ptc) is a Drosophila melanogaster (Fruit fly) membrane protein that plays a critical role in patterning embryonic and imaginal tissues. It constitutively inactivates the transcription of genes wingless, decapentaplegic, and patched itself. The secreted protein, hedgehog (Hh) induces transcription of genes by opposing the patched signalling pathway [PMID: 8575316].

In humans, mutations affecting patched (Ptc) or smoothened (Smo) homologues that trigger ligand-independent activity of the Hedgehog (Hh) signalling pathway are associated with tumours such as basal cell carcinoma (BCC) and medulloblastoma [PMID: 12192414].

Patched is associated with a complex belonging to the hedgehog pathway. Members of the complex include cubitus interruptus, sex-lethal, patched and smoothened. The complex is present at the plasma membrane and the association of patched changes depending on the activation state of the pathway [PMID: 17284519].

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

GO:0008158 hedgehog receptor activity

Cellular Component

GO:0016021 integral component of membrane

Contributing signatures

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