?
Hedgehog/Intein domain, found in Hedgehog proteins as well as proteins which contain inteins and undergo protein splicing (e.g. DnaB, RIR1-2, GyrA and Pol). In protein splicing an intervening polypeptide sequence - the intein - is excised from a protein, and the flanking polypeptide sequences - the exteins - are joined by a peptide bond. In addition to the autocatalytic splicing domain, many inteins contain an inserted endonuclease domain, which plays a role in spreading inteins. Hedgehog proteins are a major class of intercellular signaling molecules, which control inductive interactions during animal development. The mature signaling forms of hedgehog proteins are the N-terminal fragments, which are covalently linked to cholesterol at their C-termini. This modification is the result of an autoprocessing step catalyzed by the C-terminal fragments, which are aligned here.
|
Jiyao W et al.(2023). "The conserved domain database in 2023.",