SIR3 BAH mutants.

Bold residues indicate that the mutant residue is the same as the corresponding Orc1p residue. An underlined residue indicates mutant residues that are not conserved between ORC1p and Sir3p suppressor mutants.*+, mutant is more positively charged than wild type; 0, no change in charge; ?, mutant is more negatively charged than the wild type.