.BETA.-1,4-Mannanases from marine bacteria, Vibrio spp. MA-129 and MA-138.

Purification and characterization of an extracellular beta-1,4-mannanase from a marine bacterium, Vibrio sp. strain MA-138.

A beta-mannanase (EC 3.2.1.78) from Vibrio sp. strain MA-138 was purified by ammonium sulfate precipitation and several chromatographic procedures including gel filtration, adsorption, and ion-exchange chromatographies. The final ion-exchange chromatography Mono Q yielded one major active fraction and three minor active fractions. The major active fraction was purified to homogeneity on the bas...

1895-1900 Ma LAJP 2627:Ma

A sensitive and selective liquid chromatography tandem mass spectrometry (LC–MS/MS) method for determination of meropenem in rabbit plasma was developed. After addition of triazolam as internal standard (IS), protein precipitation by acetonitrile was used in sample preparation. Chromatographic separation was achieved on a Restek Allure (TM) PFP Propyl (2.1 mm × 100 mm, 5 μm) column with acetoni...

292-296 Ma LAJP 3128:Ma

A sensitive and simple liquid chromatography/electrospray mass spectrometry (LC-MS/MS) method for determination of gefitinib in rat plasma using one-step protein precipitation was developed. After addition of estazolam as internal standard (IS), protein precipitation by acetonitrile was used as sample preparation. Chromatographic separation was achieved on an SB-C18 (2.1 mm × 50 mm, 3.5 μm) col...

Magnetic properties of marine magnetotactic bacteria in a seasonally stratified coastal pond (Salt Pond, MA, USA)

Bruce M. Moskowitz,1 Dennis A. Bazylinski,2 Ramon Egli,3 Richard B. Frankel4 and Katrina J. Edwards5 1Institute for Rock Magnetism, Department of Geology and Geophysics, University of Minnesota-Twin Cities, 310 Pillsbury Dr, SE, Minneapolis, MN 55455, USA. E-mail: [email protected] 2School of Life Sciences, University of Nevada-Las Vegas, Las Vegas, NV 89154-4004, USA 3Department of Earth and Envir...

Xinrui Ma