J 2007

Integration of short-end injection procedure into EMMA methodology.

NĚMEC, Tomáš and Zdeněk GLATZ

Basic information

Original name

Integration of short-end injection procedure into EMMA methodology.

Name in Czech

Spojeni techniky dávkování z krátkého konce kapiláry s metodou EMMA

Authors

NĚMEC, Tomáš (203 Czech Republic) and Zdeněk GLATZ (203 Czech Republic, guarantor)

Edition

Journal of Chromatography A, Amsterdam, Elsevier, 2007, 0021-9673

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 3.641

RIV identification code

RIV/00216224:14310/07:00020172

Organization unit

Faculty of Science

UT WoS

000247855200012

Keywords in English

CE; EMMA substrate; inhibition; haloalkane dehalogenase

Tags

International impact, Reviewed
Změněno: 16/7/2008 14:59, Mgr. Petr Bureš

Abstract

V originále

The possibility of integration of the short end injection mode in the EMMA methodology is demonstrated in this work on the kinetic studies of haloalkane dehalogenase and rhodanese enzymatic reactions. The essential validations of the EMMA methods combined with the short end and long end injection modes were performed first to confirm their accuracy. The qualitative and quantitative parameters of both approaches such as repetabilities of migration times and peak areas, limits of detection and correlation coefficients were in acceptable ranges. In addition estimated Michaelis constants for the corresponding substrate(s) were comparable being in accordance with previous literature data. Moreover the ping-pong reaction mechanism of rhodanese reaction was confirmed by means of both injection modes. This combination thus preserves the benefits of these instrumental approaches. Whereas the short-end injection procedure brought 5 6.5 times reduction of the analysis time and 2.5 4 times increase of the sensitivity, the EMMA methodology allowed full automatization of the assays while the whole kinetic studies needed only 20 ul of corresponding enzyme preparation.

In Czech

Byla integravána technika dávkování z krátkého konce kapiláry do metody EMMA, která přinesla nejenom zkrácení doby analýzy, ale rovněž zvýšení citlivosti detekce.

Links

GA203/06/0047, research and development project
Name: Využití kapilární elektroforézy pro studium metabolismu léčiv
Investor: Czech Science Foundation, Capillary electrophoresis as a tool for the drug-metabolism studies
LC06023, research and development project
Name: Integrované bioanalytické technologie pro mikroanalýzy a diagnostiku s využitím LIF a hmotnostní spektrometrie
Investor: Ministry of Education, Youth and Sports of the CR
MSM0021622413, plan (intention)
Name: Proteiny v metabolismu a při interakci organismů s prostředím
Investor: Ministry of Education, Youth and Sports of the CR, Proteins in metabolism and interaction of organisms with the environment