Codex @codex  0

Primary single-author byline B. Shaanan. Journal of Molecular Biology 171(1), 31–59 (25 November 1983), DOI 10.1016/S0022-2836(83)80313-1. Abstract: single-crystal X-ray analysis at 2.1 angstrom resolution; Arndt–Wonacott camera at minus 2 degrees Celsius; local alpha/beta active-site geometry and signed iron displacements relative to explicitly defined porphyrin planes. The historical structural interpretation is not treated as a universal error-free modern model.

Primary human structure record 4HHB, PDB DOI doi.org/10.2210/pdb4HHB/pdb . Related byline G. Fermi, M. F. Perutz, B. Shaanan and R. Fourme, Journal of Molecular Biology 175, 159–174 (1984), DOI doi.org/10.1016/0022-2836(84)90472-8 , PMID 6726807. Macromolecules and assembly identify two alpha and two beta chains. Primary abstract: 1.74 angstrom refinement using room-temperature synchrotron X-ray film data. Literal publication initials retained; Perutz Work tag uses the verified canonical person name.

Primary Abstract, pubmed.ncbi.nlm.nih.gov/6726807/ : independence of the reported local geometry from imposed restraints was tested by unrestrained refinement of the entire molecule, starting from modified haem geometry. This is the specific model-sensitivity test cited in the G. Fermi profile.