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1.

Packing pattern of DNA in bacteriophage T2.

Ghosh, A N; Sen, A; Das Gupta, N N.

Z Naturforsch C Biosci ; 39(6): 692-4, 1984 Jun.

Article in English | MEDLINE | ID: mdl-6385520

ABSTRACT

Osmotic shock was applied to phage T2 in such a manner that the compact-mass of DNA was released from phage. The shape of this compact-mass of DNA was studied under electron microscope. It appeared that the DNA was packed into an elongated icosahedron similar to the phage head.

Subject(s)

DNA, Viral/analysis , T-Phages/ultrastructure , Escherichia coli/ultrastructure , Microscopy, Electron , Osmolar Concentration

2.

Electron microscopy of DNA-H1 complex.

Sinha, M; Sen, A; Das Gupta, N N.

Indian J Biochem Biophys ; 18(4): 272-5, 1981 Aug.

Article in English | MEDLINE | ID: mdl-7327609

Subject(s)

DNA , Histones , Animals , Cattle , Chickens , Erythrocytes , Histones/blood , Microscopy, Electron , Protein Binding , Thymus Gland

3.

Electron microscopy of colicinogenic plasmid E1 (Col E1) DNA.

Ghose, D; Sen, A; Das Gupta, N N; Guha, A.

Indian J Biochem Biophys ; 16(4): 240-5, 1979 Aug.

Article in English | MEDLINE | ID: mdl-395104

Subject(s)

Bacteriocin Plasmids , DNA, Bacterial , Escherichia coli , Plasmids , Macromolecular Substances , Molecular Weight , Nucleic Acid Conformation

4.

Dielectric studies on the interaction of daunomycin & berenil with DNA.

Sinha, M; Goswami, D N; Das Gupta, N N.

Indian J Biochem Biophys ; 15(3): 162-5, 1978 Jun.

Article in English | MEDLINE | ID: mdl-748156

Subject(s)

Amidines , DNA , Daunorubicin , Diminazene , Trypanocidal Agents , Electrochemistry

5.

Interaction of nogalamycin with DNA.

Das, G C; Dasgupta, S; Das Gupta, N N.

Biochim Biophys Acta ; 353(3): 274-82, 1974 Jul 11.

Article in English | MEDLINE | ID: mdl-4852504

Subject(s)

Antibiotics, Antineoplastic , DNA , Naphthacenes , Animals , Binding Sites , Chemical Phenomena , Chemistry, Physical , Dialysis , Glycosides , Nucleic Acid Denaturation , Nucleotides , Osmolar Concentration , Salmon , Sodium , Spectrophotometry , Temperature , Viscosity

6.

Relationships between hydrodynamical coefficients & molecular length of linear duplex DNA.

Sinha, R K; Misra, D N; Das Gupta, N N.

Indian J Biochem Biophys ; 11(2): 162-9, 1974 Jun.

Article in English | MEDLINE | ID: mdl-4448469

Subject(s)

Coliphages , DNA, Viral , Acetates , Microscopy, Electron , Quaternary Ammonium Compounds , Ultracentrifugation , Water

7.

Viscometric studies on the stability of DNA-proflavine complex-II.

Das, G C; Das Gupta, N N.

Z Naturforsch C Biosci ; 29(3): 133-5, 1974.

Article in English | MEDLINE | ID: mdl-4276691

Subject(s)

Acridines/pharmacology , DNA/analysis , Animals , Binding Sites/drug effects , DNA/metabolism , Male , Nucleic Acid Denaturation/drug effects , Osmolar Concentration , Salmon/analysis , Sodium/pharmacology , Spectrophotometry , Spermatozoa/analysis , Temperature , Viscosity

8.

Dielectric behavior of DNA--dye complex. II.

Goswami, D N; Das Gupta, N N.

Biopolymers ; 13(2): 391-400, 1974.

Article in English | MEDLINE | ID: mdl-4820067

Subject(s)

Acridines , DNA , Chemical Phenomena , Chemistry , Phosphates

9.

On the electric polarization of DNA.

Goswami, D N; Das Gupta, N N.

Biopolymers ; 13(8): 1549-56, 1974.

Article in English | MEDLINE | ID: mdl-4420743

Subject(s)

DNA , Electric Conductivity , Electrochemistry , Mathematics , Methods , Polarography , Temperature

10.

Dielectric behavior of DNA-proflavine complex.

Goswami, D N; Das, J; Das Gupta, N N.

Biopolymers ; 12(5): 1047-52, 1973 May.

Article in English | MEDLINE | ID: mdl-4710248

Subject(s)

Acridines , DNA , Binding Sites , Electric Conductivity , Surface Properties

11.

Electron microscopy of DNA from coliphage N4.

Sinha, R K; Misra, D N; Das Gupta, N N.

Virology ; 51(2): 493-8, 1973 Feb.

Article in English | MEDLINE | ID: mdl-4693402

Subject(s)

Coliphages/analysis , DNA, Viral/analysis , Microscopy, Electron , DNA Viruses/analysis , DNA, Viral/isolation & purification , Hot Temperature , Molecular Weight , Nucleic Acid Conformation , Osmosis

12.

Viscometric studies on the stability of DNA-proflavine complex.

Das, G C; Das Gupta, N N.

Z Naturforsch B Anorg Chem Org Chem Biochem Biophys Biol ; 27(11): 1385-7, 1972 Nov.

Article in English | MEDLINE | ID: mdl-4405302

Subject(s)

Amines/analysis , DNA/analysis , Acridines , Animals , Hot Temperature , Male , Nucleic Acid Conformation/drug effects , Nucleic Acid Denaturation , Osmolar Concentration , Salmon , Spectrophotometry, Ultraviolet , Spermatozoa/analysis , Viscosity

13.

Molecular weight of DNA from coliphage T7 by electron microscopy.

Misra, D N; Sinha, R K; Das Gupta, N N.

Virology ; 39(2): 183-93, 1969 Oct.

Article in English | MEDLINE | ID: mdl-5344284

Subject(s)

Coliphages/analysis , DNA, Viral/analysis , Microscopy, Electron , Molecular Weight

14.

Conformation of denatured and renatured DNA.

Bagchi, B; Misra, D N; Basu, S; Das Gupta, N N.

Biochim Biophys Acta ; 182(2): 551-61, 1969 Jun 17.

Article in English | MEDLINE | ID: mdl-4894021

Subject(s)

DNA, Bacterial/analysis , Escherichia coli , Hot Temperature , Microscopy, Electron , Molecular Weight , Nucleic Acid Denaturation , Osmolar Concentration , Sodium Chloride , Solvents , Spectrophotometry , Ultracentrifugation , Ultraviolet Rays

15.

Spectrophotometric investigation of DNA in the ultraviolet. II.

Basu, S; Das Gupta, N N.

Biochim Biophys Acta ; 174(1): 174-82, 1969 Jan 21.

Article in English | MEDLINE | ID: mdl-4885690

Subject(s)

DNA, Bacterial , DNA , Nucleosides , Nucleotides , Purines , Pyrimidines , Adenine , Chemical Phenomena , Chemistry , Cytosine , Escherichia coli , Guanine , Hydrogen-Ion Concentration , Nucleic Acid Denaturation , Spectrophotometry , Temperature , Thymidine , Thymine , Thymus Gland , Ultraviolet Rays

16.

Conformation of U.V.-irradiated DNA.

Bagchi, B; Basu, S; Misra, D N; Das Gupta, N N.

Int J Radiat Biol Relat Stud Phys Chem Med ; 16(4): 301-10, 1969.

Article in English | MEDLINE | ID: mdl-4905875

Subject(s)

DNA, Bacterial/radiation effects , Ultraviolet Rays , Escherichia coli , Microscopy, Electron , Radiation Effects , Spectrophotometry , Ultracentrifugation

17.

Effect of RNA on storage denaturation of DNA.

Basu, S; Das Gupta, N N.

Z Naturforsch B ; 23(9): 1268-9, 1968 Sep.

Article in English | MEDLINE | ID: mdl-4387210

Subject(s)

DNA, Bacterial , RNA, Bacterial , Escherichia coli , Nucleic Acid Denaturation , Spectrophotometry

18.

Electron microscopic studies on denatured DNA from Escherichia coli.

Das Gupta, N N; Sarkar, M; Misra, D N.

J Mol Biol ; 15(2): 619-23, 1966 Feb.

Article in English | MEDLINE | ID: mdl-5330749

Subject(s)

DNA, Bacterial/analysis , Escherichia coli/analysis , Hot Temperature , Microscopy, Electron , Radiation Effects , Solvents/pharmacology , Spectrophotometry , Ultraviolet Rays

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