PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8355688-7 1993 By site-directed mutagenesis, cysteine 65 was identified as the redox active site in the HAP1 enzyme. Cysteine 30-38 huntingtin associated protein 1 Homo sapiens 89-93 8355688-10 1993 Identification of a putative active site cysteine residue should facilitate analysis of the mechanism by which the HAP1 protein may alter the redox state of a wide range of transcription factors. Cysteine 41-49 huntingtin associated protein 1 Homo sapiens 115-119