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Immunoglobulins anti-endonuclease 32 kDa from Cucurbita pepo var patissonina affect process of DNA synthesis.
Author(s) -
Ryszard Rzepecki,
Jan Szopa
Publication year - 1995
Publication title -
acta biochimica polonica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.452
H-Index - 78
eISSN - 1734-154X
pISSN - 0001-527X
DOI - 10.18388/abp.1995_4642
Subject(s) - endonuclease , nuclear matrix , dna , dna replication , nuclear protein , biology , microbiology and biotechnology , dna synthesis , nuclear dna , chemistry , biochemistry , chromatin , gene , transcription factor , mitochondrial dna
Immunoglobulins anti-endonuclease 32 kDa inhibit DNA synthesis. We observed that low concentrations of IgGs (about 50 micrograms IgG per 1 x 10(6) cell nuclei) temporary inhibit DNA synthesis. This inhibition concerns only the synthesis of DNA bound to the nuclear matrix (associated with isolated nuclear matrix). Preincubation of cell nuclei of White bush with IgG generates longer DNA fragments than in controls. Involvement of the 32 kDa endonuclease or an endonuclease-65 kDa protein complex from the nuclear matrix in replication or structural organisation of replication is considered.

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