scholarly journals Optical Resolution of Some Alkaloids by Paper Chromatography and Cellulose Column Chromatography

1962 ◽  
Vol 82 (8) ◽  
pp. 1141-1144 ◽  
Author(s):  
Masao Tomita ◽  
Motoko Sugamoto
1963 ◽  
Vol 44 (1) ◽  
pp. 101-106 ◽  
Author(s):  
Wilhelm Dirscherl ◽  
Helmut Thomas

ABSTRACT Perfusion of rat liver with vanillic acid yielded only one metabolite. In paper chromatography with three different solvent systems, the substance showed the same RF-values as vanillyolglycine (3-methoxy-4-hydroxyhippuric acid) and in mixed chromatograms there was only one single spot. After separation by column chromatography, the UV- and IRspectra of the reaction product were identical with those of 3-methoxy4-hydroxy-hippuric acid. During the perfusion experiment, the kinetics of the conjugation were investigated.


1977 ◽  
Vol 74 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Y.S. Shin-Buehring ◽  
M. Osang ◽  
R. Ziegler ◽  
J. Schaub

1972 ◽  
Vol 1 (4) ◽  
pp. 269-272
Author(s):  
Isamu Akiyama ◽  
Masaji Onaya ◽  
Akira Hayakawa ◽  
Yojiro Tsuzuki

2009 ◽  
Vol 56 (1) ◽  
pp. 13-16
Author(s):  
Ken Sakai ◽  
Kyohei Ohtaki ◽  
Hideyo Koizumi ◽  
Shota Sato ◽  
Hisaoki Suzuki ◽  
...  

1990 ◽  
Vol 269 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Y Homma ◽  
Y Emori ◽  
F Shibasaki ◽  
K Suzuki ◽  
T Takenawa

A novel bovine spleen phosphoinositide-specific phospholipase C (PLC) has been identified with respect to immunoreactivity with four independent antibodies against each of the PLC isoenzymes, and purified to near homogeneity by sequential column chromatography. Spleen contains three of the isoenzymes: two different gamma-types [gamma 1 and gamma 2, originally named as PLC-gamma [Rhee, Suh, Ryu & Lee (1989) Science 244, 546-550] and PLC-IV [Emori, Homma, Sorimachi, Kawasaki, Nakanishi, Suzuki & Takenawa (1989) J. Biol. Chem. 264, 21885-21890] respectively] and delta-type of the enzyme, but PLC-gamma 1 is separated from the PLC-gamma 2 pool by the first DEAE-cellulose column chromatography. Subsequently, PLC-delta is dissociated on the third heparin-Sepharose column chromatography. The purified enzyme has a molecular mass of 145 kDa on SDS/polyacrylamide-gel electrophoresis and a specific activity of 12.8 mumol/min per mg with phosphatidylinositol 4,5-bisphosphate as substrate. This enzyme activity is dependent on Ca2+ for hydrolysis of all these phosphoinositides. None of the other phospholipids examined could be its substrate at any concentration of Ca2+. The optimal pH of the enzyme is slightly acidic (pH 5.0-6.5).


1976 ◽  
Vol 22 (7) ◽  
pp. 1047-1052 ◽  
Author(s):  
A Zettner ◽  
P E Duly

Abstract On diethylaminoethyl-cellulose column chromatography, the folate binding protein in the serum of 21 patients eluted in the early effluents as a single sharply defined peak. The chromatographic behavior of the folate binder remained unchanged whether or not the serum was, before chromatography, complexed with tritium-labeled pteroylglutamic acid ([3H]PGA), dialyzed, or charcoal-adsorbed. Heating to 100 degrees C for 10 min dissociated the [3H]PGA-binder complex while destroying the folate binding property. The presence or appearance of this folate binder in increased amounts in the serum of patients with various diseases may be related to conditions of increased tissue turnover.


1958 ◽  
Vol 75 (1) ◽  
pp. 56-68 ◽  
Author(s):  
A. Angapindu ◽  
H. Silberman ◽  
P. Tantivatana ◽  
I.R. Kaplan

Nature ◽  
1962 ◽  
Vol 193 (4817) ◽  
pp. 801-802 ◽  
Author(s):  
E. D. GARBER ◽  
W. F. REDDING ◽  
W. CHORNEY

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