PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2743579-1 1989 Measurements of the activity of transketolase in human erythrocyte lysates by an assay coupled to NADH oxidation indicate that interactions of assay substrates with hemoglobin can give rise to overestimations of transketolase activity. NAD 98-102 transketolase Homo sapiens 32-45 2743579-3 1989 Thus, in lysates containing methemoglobin, NADH oxidation can be due firstly to methemoglobin reductase activity or secondly to the monooxygenase activity of methemoglobin, for which the substrate can be ribose 5-phosphate, a substrate also of transketolase. NAD 43-47 transketolase Homo sapiens 244-257 18053578-1 2008 The standard assay for transketolase (E.C 2.2.1.1) has depended upon the use of D-xylulose 5-phosphate as the ketose donor substrate since the production of D-glyceraldehyde 3-phosphate can be readily coupled to a reaction that consumes NADH allowing the reaction to be followed spectrophotometrically. NAD 237-241 transketolase Homo sapiens 23-36 7371189-0 1980 Correction for the suppressive effect of haemoglobin on NADH absorbance in the transketolase assay. NAD 56-60 transketolase Homo sapiens 79-92 7371189-1 1980 The kinetic transketolase assay measures the absorbance change of NADH in the presence of haemoglobin. NAD 66-70 transketolase Homo sapiens 12-25