Chromomycin A3 binds to left-handed poly(dG-m5dC)
نویسندگان
چکیده
منابع مشابه
Chromomycin A3 Staining Indicates Sperm Protamine Deficiency
Chromomycin A3 binds to DNA and Protamine -deficient spermatozoa look bright yellow,whereas normal spermatozoa appear dull yellow.
متن کاملBiogenesis of chromomycin A3 by Streptomyces griseus.
The biosynthesis of chromomycin A3 was investigated using 13C-labeled acetates, methionine and glucose, and 13C,18O-labeled acetate. 13C NMR spectral analysis demonstrated that: Aglycone assembly occurs by combining at least two polyketide chains; three of nine oxygen atoms of the aglycone originate from acetate precursor oxygen atoms; carbon methylations on the aromatic ring at C-7, on the chr...
متن کاملNew DNA polymorphism: evidence for a low salt, left-handed form of poly(dG-m5dC).
Spectroscopic studies on solutions of poly(dG-m5dC) over a wide range of salt concentration are presented. Low salt solutions [( Na+]) less than 2 mM) of poly(dG-m5dC) produce circular dichroism (CD) spectra typical of the left-handed, Z form at high salt [( Na+] = 1.75 M). Solutions of poly(dG-m5dC) at intermediate salt concentrations, e.g., 142 mM, yield CD spectra characteristic of the right...
متن کاملQuantitative footprinting analysis of the chromomycin A3--DNA interaction.
Chromomycin A3 (CHR) binding to the duplex d(CAAGTCTGGCCATCAGTC).d(GACTGATGGCCAGACTTG) has been studied using quantitative footprinting methods. Previous NMR studies indicated CHR binds as a dimer in the minor groove. Analysis of autoradiographic spot intensities derived from DNase I cleavage of the 18-mer in the presence of various amounts of CHR revealed that the drug binds as a dimer to the ...
متن کاملCredibility of Chromomycin A3 Staining in Prediction of Fertility
Background Chromomycin A3 (CMA3) staining has been used to assess protamine deficiency. The aim of this study was to determine credibility of CMA3 along with semen parameters for assessment of fertility potential. MaterialsAndMethods Semen analysis and CMA3 staining were carried out on 234 fertile and 178 subfertile individuals. Semen analysis was assessed according to WHO criteria. Protamine d...
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ژورنال
عنوان ژورنال: European Journal of Biochemistry
سال: 1988
ISSN: 0014-2956,1432-1033
DOI: 10.1111/j.1432-1033.1988.tb14009.x