Effect of ADP-ribosylation reaction on bull testis chromatin

Faraone-Mennella, M.R.; De Lucia, F.; Palomba, L.; Quesada, P.; Farina, B.

Effect of ADP-ribosylation reaction on bull testis chromatin

1993

Faraone-Mennella, M.R. | De Lucia, F. | Palomba, L. | Quesada, P. | Farina, B.

Polynucleosomes prepared from bull testis nuclei were characterized: DNA length, by agarose gel electrophoresis, and distribution of poly(ADP-ribose)polymerase activity, by incubation with 0.64mM NAD were determined. Maximal activity was found in nucleosome fractions of 3-5 units. Chromatin fragments (5-2 kbp polynucleosomes) were analysed by circular dichroism in both native and ADP-ribosylated forms. The spectrum of the endogenously ADP-ribosylated polynucleosomes, compared to the native fraction, exhibited a higher ellipticity value and a shift of the cross-over point towards the lowest wavelengths, behaving like an H1-depleted chromatin.

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Palabras clave de AGROVOC

adenosine diphosphate animals bulls cattle cell nucleus centrifugation chemistry chromatin chromatin dna metabolism spectral analysis testes testis ultrastructure

Información bibliográfica

Publicado en

Biochemistry and molecular biology international

Volumen 31 Edición 2 Paginación 373 - 380 ISSN 1039-9712

Otras materias

Circular dichroism; Post-transcription modification; Poly(adp-ribose) polymerases; Density gradient; Nucleosomes; Male; Adenosine diphosphate ribose; Protein conformation

Idioma

Inglés

Tipo

Journal Article; Text

En AGRIS desde: 2024-02-28

Formato: MODS

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