4.2.99.20	D128A	conserved among MenH proteins	702326	
4.2.99.20	D210A	decreased activity	685225	
4.2.99.20	D210A	kcat/Km is 9091fold lower than wild-type value	685225	
4.2.99.20	D210A	part of the catalytically essential triad	702326	
4.2.99.20	F153A	residue involved in open-closed transition, mutation leads to large decrease in enzymatic activity	730042	
4.2.99.20	H232A	decreased activity	685225	
4.2.99.20	H232A	kcat/Km is 208333fold lower than wild-type value	685225	
4.2.99.20	H232A	part of the catalytically essential triad	702326	
4.2.99.20	H232K	part of the catalytically essential triad	702326	
4.2.99.20	K212A	conserved among MenH proteins	702326