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Articles 1 - 6 of 6

Full-Text Articles in Biochemistry, Biophysics, and Structural Biology

Thermodynamics Of Phosphate Absorption On Several Charcoals, James Duncan Beaton May 1957

Thermodynamics Of Phosphate Absorption On Several Charcoals, James Duncan Beaton

All Graduate Theses and Dissertations

Phosphorus has long been recognized by agriculturists as being one of the elements essential for plant growth. Although the total phosphorus content of a soil may be high, the amount of phosphate actually available for plant growth is often low. Many agencies such as inherent low solubilities of phosphate compounds, adsorption on Ca C03, adsorption in the diffuse double layer of clay micelles, and chemical precipitation of phosphate which refers to the removal of phosphate ions from solution and their chemical bonding to the solid phase have been studied to explain the lack of phosphate availability.


Metabolic Activity Of Protein Amide Groups, Donald Dudley Clarke Phd, Amos Neidle, Nirmal K. Sarkar, Heinrich Waelsch Jan 1957

Metabolic Activity Of Protein Amide Groups, Donald Dudley Clarke Phd, Amos Neidle, Nirmal K. Sarkar, Heinrich Waelsch

Chemistry Faculty Publications

No abstract provided.


An Enzymically Catalyzed Incorporation Of Amines Into Proteins / Nirmal K. Sarkar Donald D. Clarke Heinrich Waelsch Department Of Biochemistry, College Of Physicians And Surgeons, Columbia University, New York, And The New York Psychiatric Institute, New York, N.Y. (U.S.A.), Nirmal K. Sarkar, Donald Dudley Clarke Phd, Heinrich Waelsch Jan 1957

An Enzymically Catalyzed Incorporation Of Amines Into Proteins / Nirmal K. Sarkar Donald D. Clarke Heinrich Waelsch Department Of Biochemistry, College Of Physicians And Surgeons, Columbia University, New York, And The New York Psychiatric Institute, New York, N.Y. (U.S.A.), Nirmal K. Sarkar, Donald Dudley Clarke Phd, Heinrich Waelsch

Chemistry Faculty Publications

In experiments reported some years ago the enzyme-catalyzed exchange of the amide group of glutamine and asparagine with 15N ammonia was demonstrated but an exchange of the amide groups of protein bound dicarboxylic amino acids could not be explored owing to the unfavorable experimental conditions1 . Recently the problem of the metabolism of protein-amide groups was approached again with the aid of 14C-labeled amines, such as ethanolamine or cadaverine. Soluble protein fractions obtained from sucrose homogenates (o.2sM) of the livers of guinea pigs, rats, mice, and rabbits by centrifugation at roo,ooo X g were incubated in the presence of ...


Synthesis Of Phosphatidyl Peptides I. O-(Distearoyl-L-A-Glycerylphosphoryl)-L-Serylglycylglycine / By Erich Baer, Jonas Maurukas, And Donald D. Clarke (From The Banting And Best Department Of Medical Research, University Of Toronto, Toronto, Canada), Erich Baer, Jonas Maurukas, Donald Dudley Clarke Phd Jan 1957

Synthesis Of Phosphatidyl Peptides I. O-(Distearoyl-L-A-Glycerylphosphoryl)-L-Serylglycylglycine / By Erich Baer, Jonas Maurukas, And Donald D. Clarke (From The Banting And Best Department Of Medical Research, University Of Toronto, Toronto, Canada), Erich Baer, Jonas Maurukas, Donald Dudley Clarke Phd

Chemistry Faculty Publications

The synthesis of a phosphatidyl tripeptide has been accomplished. It was prepared by (a) phosphorylation of D-α,β-distearin with phenylphosphoryl dichloride and pyridine, (b) esterification of the resulting distearoylL- α-glycerylphenylphosphoryl chloride with N-carbobenzoxy-L-serylglycylglycine benzyl ester in the presence of lutidine, and (c) removal of the protective groups by catalytic hydrogenolysis. The O-( distearoyl-L-α-glycerylphosphoryl)- L-serylglycylglycine was obtained in an over-all yield of 12 per cent. The synthesis of N-carbobenzoxy-L-serylglycylglycine benzyl ester, for which two procedures have been reported, has been simplified considerably by condensing N -carbobenzoxy-L-serine with glycylglycine benzyl ester by means of N ,N' -dicyclohexylcarbodiimide. The phosphatidyl tripeptide is cleaved ...


Metabolism Of Ddt In The White Rat , Edward Columbus Burns Jan 1957

Metabolism Of Ddt In The White Rat , Edward Columbus Burns

Retrospective Theses and Dissertations

No abstract provided.


Chemistry Of Boron In Plants , Harold Jackson Perkins Jan 1957

Chemistry Of Boron In Plants , Harold Jackson Perkins

Retrospective Theses and Dissertations

No abstract provided.