Hedgehog acyltransferase (HHAT), also called skinny hedgehog homology in humans, is a human gene.
[1][2] The HHAT gene encodes an enzyme that catalyzes N-terminal palmitoylation of sonic hedgehog.
Mutations in HHAT produce a phenotype that is similar to loss of hedgehog function.
Finally the HHAT protein shares a short but significant sequence similarity to membrane-bound O-acyltransferases.
This article on a gene on human chromosome 1 is a stub.