منابع مشابه
On Thymus Nucleic Acid
A consideration of the earlier investigations of the nucleic acids would lead us to the conclusion that these substances yield among their hydrolytic products four purin derivatives, namely, xanthin, hypoxanthin, guanin, and adenin. Of these four bases hypoxanthin was the first discovered in this connection and was for a long time looked upon as the most constant in its occurrence, and, therefo...
متن کاملStudies on Nucleic Acid Metachromasy
Acrolein-fixed, polyester wax-embedded tissue sections showed excellent preservation of light microscopic architecture and, when stained with toluidine blue, intense color contrast between DNA, which stained orthochromatically, and RNA, which stained metachromatically. This method has practical value for differentiating DNA from RNA in the same section. The color contrast was impaired by substi...
متن کاملNucleic acid helix-coil transitions mediated by helix-unwinding proteins from calf thymus.
We have studied nucleic acid double helix destabilization mediated by purified calf helix-unwinding proteins, measuring ultraviolet hyperchromicity to detect helix melting. Both calf unwinding protein 1 (UP1) and a high salt eluting protein fraction are found to depress strongly the helix melting temperature (Tm) of the synthetic alternating copolymers poly[d(AT)] and poly[r(AU)], indicating th...
متن کاملNucleic Acid Helix-Coil Transitions Mediated by Helix-unwinding Proteins from Calf Thymus”
We have studied nucleic acid double helix destabilization mediated by purified calf helix-unwinding proteins, measuring ultraviolet hyperchromicity to detect helix melting. Both,calf unwinding protein 1 (UPl) and a high salt eluting protein fraction are found to depress strongly the helix melting temperature (T,) of the synthetic alternating copolymers poly[d(AT) ] and poly[r(AU)], indicating t...
متن کاملNucleic Acid Helix-Coil Transitions Mediated by Helix-unwinding Proteins from Calf Thymus”
We have studied nucleic acid double helix destabilization mediated by purified calf helix-unwinding proteins, measuring ultraviolet hyperchromicity to detect helix melting. Both,calf unwinding protein 1 (UPl) and a high salt eluting protein fraction are found to depress strongly the helix melting temperature (T,) of the synthetic alternating copolymers poly[d(AT) ] and poly[r(AU)], indicating t...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1907
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(17)46009-1