{'fraction_non_alphanumeric': 0.0415944540727903, 'fraction_numerical': 0.0034662045060658577, 'mean_word_length': 5.4222222222222225, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
DNA Strand Scission by Dioxygen + Light-Activated Cobalt Metallopeptides.

Co(II) complexes of H2N-Xaa-Gly-His-CONH2 peptides (Xaa = Gly or Lys) mediate DNA cleavage upon their oxidation to Co(III)·Xaa-Gly-His with ambient dioxygen and subsequent irradiation. DNA cleavage does not appear to occur through diffusible radical formation but, more likely, through a DNA-bound metallopeptide that produces locally-reactive hydroxyl radicals. These data suggest a method for activating metallopeptides that does not require the addition of exogenous chemical oxidants or reductants.