Crystal Structure of a Proximal Domain Potassium Binding Variant of Cytochrome c Peroxidase

The effects of an engineered cation site on the structure, activity, and EPR properties of cytochrome c peroxidase.

TTPLVHVASVEKGRSYEDFQKVYNAIALKLREDDEYDNYIGYGPVLVRLAWHTSGTWDKHDNTGGSYGGTYRFKKEFNDP
SNAGLQNGFKFLEPIHKEFPWISSGDLFSLGGVTAVQEMQGPKIPWRCGRVDTPEDTTPDNGRLPDADKDADYVRTFFQR
LNMNDREVVALMGAHTLGKTHLKNSGYEGPWTANNNVFDNSFYLNLLNEDWKLEKNDANNEQWDSKSGYMMLPTDYSLIQ
DPKYLSIVKEYANDQDKFFKDFSKAFEKLLENGITFPKDAPSPFIFKTLEEQGL

2,5-methyl-4-pentanediol, potassium phosphate, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 277K

2.4 angstrom room temperature structure of the CCP K+ binding mutant. Originally used was the wild type structure from Finzel et al., 1984.

TTPLVHVASVEKGRSYEDFQKVYNAIALKLREDDEYDNYIGYGPVLVRLAWHTSGTWDKHDNTGGSYGGTYRFKKEFNDP
SNAGLQNGFKFLEPIHKEFPWISSGDLFSLGGVTAVQEMQGPKIPWRCGRVDTPEDTTPDNGRLPDADKDADYVRTFFQR
LNMNDREVVALMGAHALGKTHLKNSGYEGPWGAANNVFTNEFYLNLLNEDWKLEKNDANNEQWDSKSGYMMLPTDYSLIQ
DPKYLSIVKEYANDQDKFFKDFSKAFEKLLENGITFPKDAPSPFIFKTLEEQGL