Now showing items 11-20 of 57
High-Resolution Detection of Five Frequencies in a Single 3D Spectrum: HNHCACO - a Bidirectional Coherence Transfer Experiment
(Kluwer Academic Publishers; Springer Science+Business Media, 1998-02)
A new triple-resonance pulse sequence, 3D HNHCACO, is introduced and discussed, which identifies sequential correlations of the backbone nuclei (Hα(i-1), Cα(i-1), C′(i-1), NH(i)) of doubly labeled proteins in H2O. The ...
pH-Dependent Decarboxylation of 2-Amino-3-ketobutyrate, the Unstable Intermediate in the Threonine Dehydrogenase-Initiated Pathway for Threonine Utilization
(Elsevier, 1993-02-15)
2-Amino-3-ketobutyrate can be readily formed enzymatically by the action of L-threonine dehydrogenase. A convenient assay for determining the half-life of this [beta]-keto acid is afforded by its rapid and quantitative ...
Corticotropin-releasing hormone ( Crh ) maps to mouse Chromosome 3
(Springer-Verlag; Springer-Verlag New York, Inc., 1993-10)
Initiation of poly-N-acetyllactosamine chain biosynthesis occurs preferentially on complex multiantennary asparagine-linked oligosaccharides
(Elsevier, 1990-08-01)
An N-acetyl-[beta]--glucosaminyltransferase activity involved in the initiation of poly-N-acetyllactosamine chain biosynthesis can be solubilized from Ehrlich ascites tumor cell microsomal membranes. The ability of this ...
Rabbit nasal cytochrome P-450 NMa has high activity as a nicotine oxidase
(Elsevier, 1990-01-30)
Rabbit nasal olfactory and respiratory microsomes demonstrate high activity toward [3H]-(S)-nicotine, with specific activities of 22.2 and 6.5 nmol/min/mg protein, respectively. The major metabolite produced is (S)-nicotine ...
Flow cytometric analysis of human erythrocytes: II. Possible identification of senescent RBC with fluorescently labelled wheat germ agglutinin
(Elsevier, 1991)
In the first paper of a series (Gutowski, et al., 1991) we discussed the use of flow cytometry to follow at the cellular level the aging of red blood cells (RBC) in circulation, using fluorescently labelled lectins and ...
The reduction of neuronal calcium currents by ATP-[gamma]-S is mediated a G protein and occurs independently of cyclic AMP-dependent protein kinase
(Elsevier, 1990-12-10)
We studied the effects of ATP-[gamma]-S on the T, N and L calcium current components of nodose ganglion neurons using the whole cell variation of the patch clamp technique. ATP-[gamma]-S can serve as a phosphate donor in ...
Binding of yeast TFIIIC to tRNA gene bipartite internal promoters: Analysis of physical effects on the intervening DNA
(Elsevier, 1991-04-30)
Complexes between transcription factor TFIIIC and eukaryotic tRNA gene internal promoter A and B boxes are unusual in that the binding to the two distinct sites tolerates considerable variation in both distance and helical ...
Band-selective hetero- and homonuclear cross-polarization using trains of shaped pulses
(ESCOM Science Publishers B.V., Leiden/Kluwer Academic Publishers; ESCOM Science Publishers B.V. ; Springer Science+Business Media, 1996-09)
The performance of solution cross-polarization using trains of shaped pulses on two channels is investigated by computer simulation and experiment. It is determined that a Waltz modulation pattern of Gaussian pulses of ...