Protein: Repressor protein cI (Escherichia phage lambda)
UniProt: P03034
Mutation: A21S
PDB: 3BDN
Experiment dataset: Domainome FITNESS
Domainome fitness: -0.109822328710741
Reference: Site-saturation mutagenesis of 500 human protein domains. — Beltran Antoni (Nature;637;885-894, 2025)