Now showing items 101-110 of 643
Purification and properties of S-protein (hemoprotein 559) from human erythrocytes
(Elsevier, 1971-01-19)
1. 1. A procedure employing mild conditions has been developed for purifying S-protein (hemoprotein 559, erythrocyte), a protein present in the stromal fraction of human red blood cells. S-protein, solubilized by extracting ...
Electron paramagnetic resonance studies on nitrogenase : I. The properties of molybdoferredoxin and azoferredoxin
(Elsevier, 1972-11)
Both molybdoferredoxin and azoferredoxin exhibit EPR signals. Reduced azoferredoxin has a g = 1.94 type signal characteristic of nonheme iron proteins. Reduced molybdoferredoxin has EPR signals with g-values of 2.01, 3.78 ...
Acidization--IV : Experimental correlations and techniques for the acidization of sandstone cores
(Elsevier, 1976)
The experimental variables that affect the acidization of sandstone cores in a permeameter are discussed. It was found that as HCl/HF acid mixtures are injected into porous sandstone cores a reaction front between selective ...
Partial characterization of dinoflagellate chromosomal proteins
(Elsevier, 1974-05-31)
Dinoflagellate chromosomal proteins were analyzed by acrylamide gel electrophoresis. The electrophoretic pattern of acid-insoluble chromosomal proteins from Gyrodinium cohnii in sodium dodecylsulfate gels is less heterogeneous ...
The oxidation-reduction potentials of parsley ferredoxin and its selenium-containing homolog
(Elsevier, 1971-08-06)
We have measured the oxidation-reduction potential of parsley ferredoxin and its derivative in which the two atoms of labile sulfide have been replaced by selenide. The values are -0.416 V (25[deg], pH 7.94) and -0.378 V ...
Stimulatory effect of gonadotropins on the synthesis of adenosine 3' :5'-cyclic monophosphate and progesterone by suspensions of rat ovarian interstitial cells
(Elsevier, 1975-03-14)
A cell suspension was prepared from immature rat ovaries by treatment with trypsin and collagenase. The isolated cells were capable of converting [8-14C]adenine to cyclic [14C]AMP and the rate of this conversion was ...
Structural correlations of the lanthanide halides and related compounds. Derivatives of the anti-nickel-arsenide structure
(Elsevier, 1976-07)
An examination of structural data for lanthanide halides and related compounds has shown that a substantial number of different structure types are conveniently described as layered structures derived from anti-NiAs by ...
Genetic variation in the carbonic anhydrase isozymes of macaque monkeys : III. Biosynthesis of carbonic anhydrases in bone marrow erythroid cells and peripheral blood reticulocytes of Macaco nemestrina
(Elsevier, 1973-09)
The carbonic anhydrase isozymes (CA I and CA II) of the pig-tailed macaque, Macaca nemestrina, have been chosen to study the regulation of enzyme levels in red blood cells. Two quantitative variants of CA I that are ideal ...