Feulgen-DNA absorption spectrum of euchromatin and constitutive heterochromatin. | Zendy

Maria Luiza S. Mello | Zendy

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Feulgen-DNA absorption spectrum of euchromatin and constitutive heterochromatin.

Author(s) -

Maria Luiza S. Mello

Publication year - 1978

Publication title -

journal of histochemistry and cytochemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.971

H-Index - 124

eISSN - 1551-5044

pISSN - 0022-1554

DOI - 10.1177/26.12.83338

Subject(s) - euchromatin , heterochromatin , feulgen stain , dna , constitutive heterochromatin , chemistry , biophysics , biology , microbiology and biotechnology , biochemistry , chromatin

When the heterochromatin and euchromatin of Triatoma infestans are maximally depurinated, their Feulgen-DNA spectral profiles exhibit a shoulder at about lambda = 530 nm. The shoulder is especially prominent in the curves of the heterochromatin. It is assumed that this pattern is related to richness in repetitive DNA in the heterochromatin, favoring appearance of Schiff reagent molecules di-substituted with adjacent apurinic acid aldehydes.

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