N6-(Δ2-Isopentenyl)adenosine. A Component of the Transfer Ribonucleic Acid of Yeast and of Mammalian Tissue, Methods of Isolation, and Characterization*

Biochemistry ◽  
1967 ◽  
Vol 6 (6) ◽  
pp. 1837-1848 ◽  
Author(s):  
Morris J. Robins ◽  
Ross H. Hall ◽  
Roosevelt Thedford
Keyword(s):  
Ribonucleic Acid ◽  
Mammalian Tissue ◽  
Isolation And Characterization ◽  
Isopentenyl Adenosine ◽  
Methods Of Isolation

scholarly journals Isolation and characterization of the dopa decarboxylase gene of Drosophila melanogaster

1981 ◽  
Vol 1 (6) ◽  
pp. 475-485
Author(s):  
J Hirsh ◽  
N Davidson
Keyword(s):  
Drosophila Melanogaster ◽  
Ribonucleic Acid ◽  
Deoxyribonucleic Acid ◽  
Isolation Procedure ◽  
Chromosome Band ◽  
Dopa Decarboxylase ◽  
Developmental Profile ◽  
Isolation And Characterization

We have isolated chromosomal deoxyribonucleic acid clones containing the Drosophila dopa decarboxylase gene. We describe an isolation procedure which can be applied to other nonabundantly expressed Drosophila genes. The dopa decarboxylase gene lies within or very near polytene chromosome band 37C1-2. The gene is interrupted by at least one intron, and the primary mode of regulation is pretranslational. At least two additional sequences hybridized by in vivo ribonucleic acid-derived probes are found within a 35-kilobase region surrounding the gene. The developmental profile of ribonucleic acid transcribed from one of these regions differs from that of the dopa decarboxylase transcript.

scholarly journals THE SIGNIFICANCE OF GRAM'S STAIN IN MAMMALIAN TISSUE

1962 ◽  
Vol 10 (1) ◽  
pp. 36-38 ◽  
Author(s):  
MARVIN MURRAY
Keyword(s):  
Crystal Violet ◽  
Ribonucleic Acid ◽  
Fundamental Difference ◽  
Mammalian Tissue

A method for demonstrating nuclear ribonucleic acid is given. This entails the use of Grams' stain of heat fixed tissues. The selectivity of crystal violet for nuclear ribonuclei acid suggests a fundamental difference between the nuclear and cytoplasmic varieties of this substance.

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