Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Karin Hammer-Jespersen"'
Autor:
Johan C. Leer, Karin Hammer-Jespersen
Publikováno v:
Biochemistry. 14:599-607
Phosphodeoxyribomutase from Escherichia coli has been purified to homogeneity. Chromatography on DEAE-Sephadex revealed three peaks of enzyme activity, designated form I, form II, and form III. Form III could be further separated into form III-1 and
Publikováno v:
European Journal of Biochemistry. 75:217-224
Uridine phosphorylase from Escherichia coli has been purified to homogeneity. The enzyme was found to have a molecular weight of 176000 and to consist of 8 probably identical subunits with molecular weights of 22000. These numbers were determined fro
Publikováno v:
Molecular and General Genetics MGG. 137:327-335
The protein and repressor nature of two regulatory gene products in E. coli has been demonstrated, employing mutants with either amber or thermosensitive mutations. The regulatory genes are the cytR and the deoR genes, both of which contribute to the
Publikováno v:
European Journal of Biochemistry. 125:561-566
The sequence of the deoC gene of Escherichia coli K12 and the amino acid sequence of the corresponding protein, deoxyriboaldolase, has been established. The protein consists of 259 amino acids with a molecular weight of 27 737. The purified enzyme ma
Publikováno v:
Journal of Molecular Biology. 114:287-300
Four closely-linked genes of Escherichia coli, comprising the deoxyribonucleoside (deo) operon, viz. dra, tpp, drm, and pup†, which code for enzymes involved in the catabolism of nucleosides and deoxynucleosides, are known to form two transcription
Publikováno v:
Journal of Molecular Biology. 133:1-17
Expression of the deo operon of Escherichia coli K12 has been studied in vitro using the Zubay (1973) system for DNA primed transcription and translation. The kinetics for messenger RNA synthesis of all four structural deo genes have been followed by
Publikováno v:
Molecular and General Genetics MGG. 159:191-202
The synthesis of the four enzymes of the deo operon in Escherichia coli is known from in vivo experiments to be subject to a double negative control, exerted by the products of the cytR and deoR genes. A DNA-directed in vitro protein synthesizing sys
Autor:
Karin Hammer-Jespersen, Per Nygaard
Publikováno v:
Molecular and General Genetics MGG. 148:49-55
The regulation of the synthesis of nucleoside metabolizing enzymes has been studied in cya and crp mutant strains of Escherichia coli. The synthesis of the cyt-enzymes, cytidine deaminase and uridine phosphorylase regulated by the cytR gene product,
Publikováno v:
European Journal of Biochemistry. 27:208-215
Regulatory mutants of Escherichia coli, which synthesize cytidine deaminase and uridine phosphorylase constitutively have been isolated by different selection procedures and have been characterized. These mutants were also found to synthesize four ot
Publikováno v:
Moleculargeneral genetics : MGG. 182(1)
Phage Mu has been inserted into the structural gene for cytidine deaminase (cdd). By the use of phage lambda (lac, Mu) the promoter for the cdd gene has been fused to lacZ. In these strains lacZ expression is regulated by the cytR repressor protein a