Burkholderia Phytofirmans glyoxalase/bleomycin resistance protein/dioxygenase family enzyme and similar proteins
Burkholderia Phytofirmans glyoxalase/bleomycin resistance protein/dioxygenase family enzyme and similar proteins. The vicinal oxygen chelate (VOC) superfamily is composed of structurally related proteins with paired beta.alpha.beta.beta.beta motifs that provide a metal coordination environment with two or three open or readily accessible coordination sites to promote direct electrophilic participation of the metal ion in catalysis. VOC domain is found in a variety of structurally related metalloproteins, including the bleomycin resistance protein, glyoxalase I, and type I ring-cleaving dioxygenases. A bound metal ion is required for protein activities for the members of this superfamily. A variety of metal ions have been found in the catalytic centers of these proteins including Fe(II), Mn(II), Zn(II), Ni(II) and Mg(II). The protein superfamily contains members with or without domain swapping. The proteins of this family share three conserved metal binding amino acids with the type I extradiol dioxygenases, which shows no domain swapping.
Comment:Glyoxalase I has two active sites, type I extradiol dioxygenase has only one active site at the C-terminus. Some other members in this superfamily do not have a catalytic site at all. The site annotation is based on the glyoxyalase I.