{'fraction_non_alphanumeric': 0.021015761821366025, 'fraction_numerical': 0.010507880910683012, 'mean_word_length': 5.355555555555555, '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}}
Discrimination between messenger ribonucleic acids by a mammalian translation initiation factor.

A factor from rabbit-reticulocyte ribosome, which stimulates by 5-fold initiation of hemoglobin mRNA translation in Krebs ascites cell extracts, was purified to homogeneity. The factor, a protein of about 65,000 molecular weight in sodium dodecyl sulfate, discriminates between various mRNAs: it stimulates translation of alpha globin mRNA and of tobacco mosaic virus RNA, but has only a small effect on beta globin mRNA and no effect at all on Mengo virus RNA translation.