So this enzyme catalyzes the oxidative decarboxylation. So oxidative means we have an oxidation reduction reaction going on where this is oxidized and this is reduced. And we also have a decarboxylation reaction taking place where this carbon number one along with these two oxygen atoms are essentially removed. And so we form this ribulose five phosphate molecule. So we kick off a carbon dioxide molecule, we form a pentosugar, a five carbon sugar. So we have 123456 carbons here, while we have only 12345 carbons here.