The Effect of Urea, Formamide, and Glycols on the Secondary Binding Forces in the Ion-Exchange Chromatography of Polynucleotides on DEAE-Cellulose*

Biochemistry ◽  
1963 ◽  
Vol 2 (4) ◽  
pp. 697-702 ◽  
Author(s):  
R. V. Tomlinson ◽  
G. M. Tener
Keyword(s):  
Ion Exchange ◽  
Deae Cellulose ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Binding Forces

Characterization and production of polyclonal antisera against pangasius (Pangasianodon hypophthalmus) serum immunoglobulin IgM derived from DEAE cellulose based ion exchange chromatography

2013 ◽  
Vol 46 (6) ◽  
pp. 1417-1425 ◽  
Author(s):  
Sudhagar Arun Sudhagar ◽  
Kurcheti Pani Prasad ◽  
Marrappan Makesh ◽  
Govindarajan Rathi Bhuvaneswari ◽  
Kezhedath Jeena
Keyword(s):  
Ion Exchange ◽  
Deae Cellulose ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Serum Immunoglobulin ◽  
Pangasianodon Hypophthalmus ◽  
Polyclonal Antisera

THE SEPARATION AND PURIFICATION OF HUMAN LUTEINIZING AND THYROTROPHIC HORMONES

1964 ◽  
Vol 29 (1) ◽  
pp. 61-69 ◽  
Author(s):  
ANNE STOCKELL HARTREE ◽  
W. R. BUTT ◽  
K. E. KIRKHAM
Keyword(s):  
Luteinizing Hormone ◽  
Ion Exchange ◽  
Deae Cellulose ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Separation And Purification ◽  
Hormone Activity ◽  
Human Pituitary ◽  
Thyrotrophic Hormone

SUMMARY Ion-exchange chromatography was used to further purify a human pituitary fraction rich in thyrotrophic and luteinizing hormone activities. Approximately twofold concentration of both activities was obtained by chromatography on IRC-50 at pH 7·5, but the hormones were not separated. Subsequent chromatography on DEAE-cellulose at pH 9·5 led to a tenfold concentration of the luteinizing hormone in a fraction practically free of thyrotrophic activity and to a fourfold concentration of the thyrotrophic hormone in a fraction still exhibiting substantial luteinizing hormone activity.

Kristallstruktur von Cs2[B6H5(SCN)]/ Crystal Structure of Cs2[B6H5(SCN)]

1998 ◽  
Vol 53 (8) ◽  
pp. 816-818 ◽  
Author(s):  
W. Preetz ◽  
S. Zander ◽  
C. Bruhn
Keyword(s):  
Crystal Structure ◽  
Ion Exchange ◽  
Structure Determination ◽  
Deae Cellulose ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
X Ray

Abstract By reaction of [B6H6]2-with (SCN)2 in dichloromethane at -80 C° the thiocyanatohexaborate anion is formed and can be isolated by ion exchange chromatography on diethylaminoethyl (DEAE) cellulose. The X-ray structure determination of Cs2[B6H5(SCN)] (orthorhombic, space group Pbca with a = 9.506(5), b = 10.644(5), c = 21.857(5) Å, Z = 8) reveals that the SCN substituent is bonded via the S atom with the B-S distance of 1.885(9) Å and the B-S-C angle of 99.8(5)°. The SCN group is nearly linear (179.9(9)°).

scholarly journals Isolation of albumin from whole human plasma and fractionation of albumin-depleted plasma

1976 ◽  
Vol 157 (2) ◽  
pp. 301-306 ◽  
Author(s):  
J Travis ◽  
J Bowen ◽  
D Tewksbury ◽  
D Johnson ◽  
R Pannell
Keyword(s):  
Ion Exchange ◽  
Human Plasma ◽  
Plasma Proteins ◽  
Deae Cellulose ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Affinity Column ◽  
Plasma Albumin ◽  
Cibacron Blue ◽  
Blue Sepharose

The dye Cibacron Blue F-3-GA was conjugated to Sepharose to provide an affinity column for serum albumin. Passage of whole human plasma through a column of Cibacron Blue-Sepharose results in the removal of approx. 98% of the albumin. The latter can be quantitatively recovered by desorption with NaSCN. Albumin-depleted plasma can be readily resolved into discrete fractions by a combination of conventional biochemical techniques. In particular, the resolution of plasma proteins with properties similar to those of native human plasma albumin can readily be accomplished by ion-exchange chromatography of the Sepharose-dye-treated plasma on DEAE-cellulose.

The diguanosine nucleotides: do they exist in aquatic fungi?

1977 ◽  
Vol 55 (8) ◽  
pp. 841-846 ◽  
Author(s):  
A. H. Warner ◽  
D. des S. Thomas ◽  
V. Shridhar ◽  
H. D. McCurdy
Keyword(s):  
Ion Exchange ◽  
Deae Cellulose ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Aquatic Fungi ◽  
Enzyme Hydrolysis ◽  
Achlya Ambisexualis ◽  
Cast Doubt ◽  
Blastocladiella Emersonii ◽  
Metabolic Regulators

The aquatic fungi Achlya ambisexualis and Blastocladiella emersonii were grown in the presence of 32Pi and the 32P-labeled acid-soluble nucleotide fractions were analyzed by ion-exchange chromatography on DEAE-cellulose. Selected column fractions containing diguanosine tri- and tetra-phosphates (Gp3G and Gp4G) added as chromatographic markers were analyzed further for 32P by chromatography and (or) enzyme hydrolysis. The results of these experiments clearly indicate that neither Gp4G nor Gp3G is synthesized during vegetative growth of these organisms and cast doubt on the hypothesis that diguanosine nucleotides are important metabolic regulators in fungi.

Catabolism of (R)-Amygdalin and (R)-Vicianin by Partially Purified ß-Glycosidases from Prunus serotina Ehrh. and Davallia trichomanoides

1984 ◽  
Vol 39 (3-4) ◽  
pp. 232-239 ◽  
Author(s):  
Gary Kuroki ◽  
Pauline A. Lizotte ◽  
Jonathan E. Poulton
Keyword(s):  
Ion Exchange ◽  
Deae Cellulose ◽  
Hydrolytic Activity ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Prunus Serotina ◽  
Artificial Substrates ◽  
Black Cherry ◽  
Significant Activity ◽  
Optimum Ph

Mature black cherry (Prunus serotina Ehrh.) seeds accum ulate high levels of the cyanogenic disaccharide (R)-amygdalin. Extracts from these seeds contain two β-glycosidases which have been identified and completely resolved by DEAE-cellulose ion-exchange chromatography. Amygdalin hydrolase hydrolyzed (R)-am ygdalin at an optimum pH of 5.5, releasing (R)-prunasin and D-glucose. This enzyme showed highest activity towards (R)-am ygdalin and failed to hydrolyze (R)-prunasin. linamarin, β-gentiobiose and cellobiose. A distinct β-glycosidase, prunasin hydrolase, displayed a pronounced preference for (R)-prunasin, hydrolyzing this cyanogenic monosaccharide at an optimum pH of 6.5 to mandelonitrile and D-glucose. Prunasin hydrolase was inactive towards (R)-am ygdalin, linamarin, and β-gentiobiose. Both enzymes showed significant activity towards the artificial substrates β-ONPGlu and β-PNPGlu but did not hydrolyze α-PNPGlu. In view of the pronounced specificity of these enzymes towards endogenous cyanogens, it is concluded that upon disruption of black cherry seeds (R)- amygdalin is catabolized to mandelonitrile in a stepwise manner (the sequential mechanism) by amygdalin hydrolase and prunasin hydrolase with (R)-prunasin serving as intermediate. Young fronds of Davallia trichomanoides are rich sources of (R)-vicianin (the β-vicianoside of (R)-mandelonitrile). A β-glycosidase, vicianin hydrolase, has been partially purified from frond extracts by ion-exchange chromatography. At the optimum pH of 6.0, this enzyme showed highest hydrolytic activity with (R)-vicianin, although both (R)-am ygdalin and (R)-prunasin could be hydrolyzed at approximately 15% of the rate observed with (R)-vicianin. It failed to hydrolyze β-gentiobiose, cellobiose, linamarin and α-PNPGlu. Closer exam ination revealed that (R)-vicianin and (R)-amygdalin were hydrolyzed at the aglycone-disaccharide bond (the simultaneous mechanism) yielding mandelonitrile and the respective disaccharides vicianose and β-gentiobiose

Purification of glysojanin, an antifungal protein, from the black soybean Glycine soja

2003 ◽  
Vol 81 (6) ◽  
pp. 387-394 ◽  
Author(s):  
Patrick H.K Ngai ◽  
T B Ng
Keyword(s):  
Liquid Chromatography ◽  
Ion Exchange ◽  
Glycine Soja ◽  
Gel Filtration ◽  
Deae Cellulose ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Fast Protein Liquid Chromatography ◽  
Antifungal Protein ◽  
Black Soybean

A monomeric protein, with a molecular mass of 25 kDa and an N-terminal sequence resembling a segment of chitin synthase, was isolated from the seeds of the black soybean Glycine soja. The protein, designated glysojanin, demonstrated potent antifungal activity against the fungi Fusarium oxysporum and Mycosphaerella arachidicola. It inhibited HIV-1 reverse transcriptase with an IC50 of 47 µmol/L, [methyl-3H]thymidine incorporation by mouse spleen cells with an IC50 of 175 µmol/L, and translation in the rabbit reticulocyte lysate with an IC50 of 20 µmol/L. Glysojanin was purified using a procedure that involved ion-exchange chromatography on DEAE-cellulose, affinity chromatography on Affi-gel blue gel, ion-exchange chromatography by fast protein liquid chromatography on Mono S, and gel filtration by fast protein liquid chromatography on Superdex 75.Key words: antifungal protein, seeds, soybean, purification.

scholarly journals The N-acetylhexosaminidase components of the ram testis and epididymis

1973 ◽  
Vol 133 (3) ◽  
pp. 593-599 ◽  
Author(s):  
Sarah Bullock ◽  
Bryan Winchester
Keyword(s):  
Molecular Weight ◽  
Ion Exchange ◽  
Isoelectric Focusing ◽  
Catalytic Properties ◽  
Deae Cellulose ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Multiple Forms ◽  
The Individual

Three and four N-acetylhexosaminidase components, from ram testis and epididymis respectively, have been separated by ion-exchange chromatography on DEAE-cellulose. Although they all have the same molecular weight (approx. 140000) and very similar catalytic properties towards the synthetic substrates, 4-methylumbelliferyl N-acetyl-β-glucosaminide and N-acetyl-β-galactosaminide, isoelectric focusing of the individual components showed that each had a distinct pI value. Isoelectric focusing has also been used to demonstrate the occurrence of multiple forms in ejaculated ram semen.

Comparative studies of manganese(II)-, nickel(II)-, zinc(II)-, copper(II)-, cadmium(II)-, and iron(III)-binding components in human cord and adult sera

1984 ◽  
Vol 62 (6) ◽  
pp. 449-455 ◽  
Author(s):  
Show-Jy Lau ◽  
Bibudhendra Sarkar
Keyword(s):  
Molecular Weight ◽  
Trace Metals ◽  
Ion Exchange ◽  
Comparative Studies ◽  
Gel Filtration ◽  
Deae Cellulose ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Low Molecular Weight ◽  
High Molecular Weight Proteins

The binding of six trace metals, Mn(II), Ni(II), Zn(II), Cu(II), Cd(II) and Fe(III), to human cord serum has been studied by Sephadex G-100 gel filtration at physiological pH, using radioisotopes as tracers. The results are compared with those obtained from adult serum. In both cord and adult sera, extensive amounts of the metals are bound to high molecular weight proteins. Among them, Fe(III) is mostly bound to transferrin; Ni(II), Zn(II), Cu(II), and Cd(II) are bound to albumin and other macro-molecules. The binding of Mn(II) either to transferrin or albumin is not resolved. Small fractions of Zn(II), Cu(II), and Cd(II) and large fractions of Mn(II) and Ni(II) are found to be associated with low molecular weight components of both sera. The distribution varies from metal to metal. However, the low molecular weight component of the size 1500 – 10 000 is present in all the metals studied. Further purification of this component was attempted by DEAE-cellulose ion-exchange chromatography. The possible identity as well as the biological role played by this particular component of serum in the transport of metals in blood and across membranes is discussed.

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