pfam04021: Class_IIIsignal (this model, PSSM-Id:281950 is obsolete and has been replaced by 397916)
Class III signal peptide
This family of archaeal proteins contains. an amino terminal motif QXSXEXXXL that has been suggested to be part of a class III signal sequence. With the Q being the +1 residue of the signal peptidase cleavage site. Two members of this family are cleaved by a type IV pilin-like signal peptidase.
Jiyao W et al.(2023). "The conserved domain database in 2023.",