PNAS108(2011),10139–10143; DOI10.1073/pnas.1019441108; primary full text PMC3121847. Abstract/Figure1 identify Adx iron-sulfur cluster and CYP11A1 complex. PubMed flags erratum108(37),15535; no numerical structural-distance claim used. Original full byline is Natallia Strushkevich, distinct from existing Natalia Mast.