1.2.7.1 pyruvate synthase; pyruvate oxidoreductase; pyruvate synthetase; pyruvate:ferredoxin oxidoreductase; pyruvic-ferredoxin oxidoreductase; 2-oxobutyrate synthase; alpha-ketobutyrate-ferredoxin oxidoreductase; 2-ketobutyrate synthase; alpha-ketobutyrate • • •