1.1.1.402 D-erythritol 1-phosphate dehydrogenase erythritol degradation I - - 2.7.1.215 erythritol kinase (D-erythritol 1-phosphate-forming) erythritol degradation I - - 5.1.3.38 D-erythrulose 1-phosphate 3-epimerase erythritol degradation I - - 5.3.1.33 L-erythrulose 1-phosphate isomerase erythritol degradation I - - 5.3.1.34 D-erythrulose 4-phosphate isomerase erythritol degradation I - -