Nucleotide sequences of three proline tRNAs fromSalmonella typhimurium

Nucleotide sequences of two glutamine tRNAs from HeLa cells.

We reported previously that 4.5S RNAj, is associated with poly A RNAs of rodent cells (1). However, this molecule was not found in human, monkey, cat, mink, rabbit or chicken cells ^1) . In HeLa cells, several 4S RNAs are released from the poly A RNA fraction (1) . We determined the nudeotide sequence of one of the most abundant 4S RNA species in this fraction. Nudeotide sequence analysis was p...

Salmonella typhimurium proline mutants.

Proline Mutants of Salmonella Typhimurium.

CCORDING to previous analyses of 16 proline-requiring mutants of SalmonA d l a typhimurium, made genetically by NIELSEN (DEMEREC et al. 1954) and biochemically by JSANAZIR (1956; DEMEREC et al. 1955), the mutants fell into at least three groups. Recently, the number of proline-requiring mutants in our collection was increased to more than 200, and useful new techniques were devised or adapted f...

Regulation of proline degradation in Salmonella typhimurium.

The pathway for proline degradation in Salmonella typhimurium appears to be identical to that found in Escherichia coli and Bacillus subtilis. Delta(1)-Pyrroline-5-carboxylic acid (P5C) is an intermediate in the pathway; its formation consumes molecular oxygen. Assays were devised for proline oxidase and the nicotinamide adenine dinucleotide phosphate-specific P5C dehydrogenase activities. Both...

The nucleotide sequences of 5S rRNAs from three ciliated protozoa.

The nucleotide sequences of 5S rRNAs from three ciliated protozoa, Paramecium tetraurelia, Tetrahymena thermophila and Blepharisma japonicum have been determined. All of them are 120 nucleotides long and the sequence of probable tRNA binding site of position 41-44 is GAAC which is characteristic of the plant 5S rRNAs. The sequence similarity percents are 87% (Paramecium/Tetrahymena), 86% (Param...