PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 32457044-6 2020 We demonstrate that CblC catalyzes the GSH-dependent denitration of NO2Cbl forming 5-coordinate cob(II)alamin, which had one of two fates. nitritocobalamin 68-74 Cbl proto-oncogene C Homo sapiens 20-24 32457044-10 2020 Finally, the denitration activity of CblC supported cell proliferation in the presence of NO2Cbl, which can serve as a cobalamin source. nitritocobalamin 90-96 Cbl proto-oncogene C Homo sapiens 37-41 32457044-12 2020 In summary, upon exposure to air, NOCbl is rapidly converted to NO2Cbl, which is a substrate for the B12 trafficking enzyme CblC. nitritocobalamin 64-70 Cbl proto-oncogene C Homo sapiens 124-128