cdb155 is an engineered D627A substitution in the short isoform of alg-2, mutating the DDH catalytic triad to ADH. Catalytically inactive allele of alg-2. Reference: Kotagama K, et al. Nucleic Acids Res. 2024 May 22;52(9):4985-5001. doi: 10.1093/nar/gkae170. PMID: 38471816.