PMID- 26278433 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150819 LR - 20150817 IS - 1948-7185 (Electronic) IS - 1948-7185 (Linking) VI - 5 IP - 19 DP - 2014 Oct 2 TI - Toward Quantitative Measurements of Enzyme Kinetics by Dissolution Dynamic Nuclear Polarization. PG - 3290-5 LID - 10.1021/jz501411d [doi] AB - Dissolution dynamic nuclear polarization (D-DNP) experiments enabled us to study the kinetics of the enzymatic phosphorylation reaction of glucose to form glucose-6-phosphate (G6P) by hexokinase (HK), with or without the presence of an excess of G6P, which is known to be an inhibitor of the enzyme. Against all expectations, our observations demonstrate that the phosphorylation of both alpha and beta glucose anomers occurs with comparable kinetics. The catalytic constant of the reaction was estimated based on a simple kinetic model tailored for hyperpolarized systems. FAU - Miclet, Emeric AU - Miclet E AD - daggerEcole Normale Superieure-PSL Research University, Departement de Chimie, 24 rue Lhomond, F-75005 Paris, France. AD - double daggerSorbonne Universites, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France. AD - section signCNRS, UMR 7203 LBM, F-75005, Paris, France. FAU - Abergel, Daniel AU - Abergel D AD - daggerEcole Normale Superieure-PSL Research University, Departement de Chimie, 24 rue Lhomond, F-75005 Paris, France. AD - double daggerSorbonne Universites, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France. AD - section signCNRS, UMR 7203 LBM, F-75005, Paris, France. FAU - Bornet, Aurelien AU - Bornet A AD - parallelInstitut des Sciences et Ingenierie Chimiques, Ecole Polytechnique Federale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland. FAU - Milani, Jonas AU - Milani J AD - parallelInstitut des Sciences et Ingenierie Chimiques, Ecole Polytechnique Federale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland. FAU - Jannin, Sami AU - Jannin S AD - daggerEcole Normale Superieure-PSL Research University, Departement de Chimie, 24 rue Lhomond, F-75005 Paris, France. AD - double daggerSorbonne Universites, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France. AD - section signCNRS, UMR 7203 LBM, F-75005, Paris, France. AD - parallelInstitut des Sciences et Ingenierie Chimiques, Ecole Polytechnique Federale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland. AD - perpendicularBruker BioSpin AG, Industriestrasse 26, 8117 Fallanden, Switzerland. FAU - Bodenhausen, Geoffrey AU - Bodenhausen G AD - daggerEcole Normale Superieure-PSL Research University, Departement de Chimie, 24 rue Lhomond, F-75005 Paris, France. AD - double daggerSorbonne Universites, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France. AD - section signCNRS, UMR 7203 LBM, F-75005, Paris, France. AD - parallelInstitut des Sciences et Ingenierie Chimiques, Ecole Polytechnique Federale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland. LA - eng PT - Journal Article DEP - 20140912 PL - United States TA - J Phys Chem Lett JT - The journal of physical chemistry letters JID - 101526034 OTO - NOTNLM OT - dissolution dynamic nuclear polarization OT - enzyme kinetics OT - glucose-6-phosphate OT - hexokinase OT - hyperpolarization OT - nuclear magnetic resonance EDAT- 2015/08/19 06:00 MHDA- 2015/08/19 06:01 CRDT- 2015/08/18 06:00 PHST- 2015/08/18 06:00 [entrez] PHST- 2015/08/19 06:00 [pubmed] PHST- 2015/08/19 06:01 [medline] AID - 10.1021/jz501411d [doi] PST - ppublish SO - J Phys Chem Lett. 2014 Oct 2;5(19):3290-5. doi: 10.1021/jz501411d. Epub 2014 Sep 12.