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Sofia Simmonds

Cornell University

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Experimental Biology and Medicine | 1945

A Further Study of the Lability of the Methyl Group of Creatine

Sofia Simmonds; Vincent du Vigneaud

Summary Creatine containing the deu-teriomethyl group was fed to two young rats on an otherwise methyl-free diet. The creatine isolated from the tissues contained a considerable amount of deuterium, while the choline from the tissues was completely devoid of deuterium. Transmethylation from choline to creatine, therefore, is irreversible.

Journal of Biological Chemistry | 1941

The utilization of the methyl group of methionine in the biological synthesis of choline and creatine.

V. Du Vigneaud; Mildred Cohn; J. P. Chandler; Jay R. Schenck; Sofia Simmonds

Journal of Biological Chemistry | 1946

A further investigation of the role of betaine in transmethylation reactions in vivo.

Vincent du Vigneaud; Sofia Simmonds; J. P. Chandler; Mildred Cohn

Journal of Biological Chemistry | 1950

The effect of ethionine on transmethylation from metbionine to choline and creatine in vivo.

Sofia Simmonds; Elizabeth B. Keller; J. P. Chandler; V. Du Vigneaud

Journal of Biological Chemistry | 1946

The role of dimethyl- and monomethylaminoethanol in transmethylation reactions in vivo.

V. Du Vigneaud; J. P. Chandler; Sofia Simmonds; A. W. Moyer; Mildred Cohn

Science | 1957

Phenylalanine and tyrosine metabolism in E. coli strain K-12.

Dorothy A. Miller; Sofia Simmonds

Journal of Biological Chemistry | 1947

The utilization of phenylalanine and tyrosine derivatives by mutant strains of Escherichia coli.

Sofia Simmonds; E. L. Tatum; Joseph S. Fruton

Journal of Biological Chemistry | 1960

Metabolite Uptake by Serine-Glycine Auxotrophs of Escherichia coli

Elliot M. Levine; Sofia Simmonds

Journal of Biological Chemistry | 1945

THE INHIBITION OF THE GROWTH OF YEAST BY THIENYLALANINE

Vincent du Vigneaud; Herbert McKennis; Sofia Simmonds; Karl Dittmer; George Bosworth Brown

Journal of Biological Chemistry | 1949

The Utilization of Amino Acids and Peptides by Mutant Strains of Escherichia coli.

Sofia Simmonds; Joseph S. Fruton

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Joseph S. Fruton

Rockefeller University

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Mildred Cohn

Cornell University

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J. P. Chandler

Cornell University

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Vincent du Vigneaud

Cornell University

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Jay R. Schenck

Cornell University

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Dorothy A. Miller

Columbia University

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Elizabeth B. Keller

Cornell University

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George Bosworth Brown

University of Washington

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Karl Dittmer

Cornell University

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