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This is microbial biochemistry.\nexposure: Purified plant RG-II and defined enzymatic substrates\nevidence_span: {\"source_cache\": \"artifacts/pectin-research/28329766.fulltext.txt\", \"locator\": \"Primary full-text span; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"e0298d5bf6cef49e211cd0230c691566f2a68a0b7c6642040c50687ac8dcd55f\", \"start_char\": 3702, \"end_char\": 4301, \"text_sha256\": \"b0577db49fd5f5b6c8a42a003ad49148b31012228ed996430885de1d4fbd6fe0\"}\n[pectin-p28329766] Complex pectin metabolism by gut bacteria reveals novel catalytic functions. (2017). https://pubmed.ncbi.nlm.nih.gov/28329766/ DOI: 10.1038/nature21725","model_system":"Recombinant enzyme dissection and structures","directness":"author_interpretation","verification_status":"source_derived_draft","notes":"Exact curation-document quotation, not publisher quotation. Study references: [pectin-p28329766] Complex pectin metabolism by gut bacteria reveals novel catalytic functions. 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