scholarly journals Effect of cysteine modification on dihydrofolate reductase from a methotrexate-resistant strain of Escherichia coli B. Identification of modified residues.

1977 ◽  
Vol 252 (19) ◽  
pp. 6871-6877 ◽  
Author(s):  
M N Williams ◽  
C D Bennett
1973 ◽  
Vol 248 (18) ◽  
pp. 6375-6379
Author(s):  
Myra N. Williams ◽  
Martin Poe ◽  
Norma J. Greenfield ◽  
Jordan M. Hirshfield ◽  
Karst Hoogsteen

Biochemistry ◽  
1972 ◽  
Vol 11 (25) ◽  
pp. 4706-4711 ◽  
Author(s):  
Norma J. Greenfield ◽  
Myra N. Williams ◽  
Martin Poe ◽  
Karst Hoogsteen

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