{'fraction_non_alphanumeric': 0.01488833746898263, 'fraction_numerical': 0.0024813895781637717, 'mean_word_length': 4.771428571428571, '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}}
A trimeric esterase in the common shrew.

A variable kidney esterase found in the common shrew has a trimeric structure as indicated by the phenotypes of heterozygotes. From substrate specificity and tissue distribution this enzyme appears to be homologous with esterase-6 of the mouse, also a trimeric enzyme. It is suggested that a trimeric esterase may have been a feature of early eutherian mammals.