2023-01-31 | The Shr receptor from Streptococcus pyogenes uses a cap and release mechanism to acquire heme–iron from human hemoglobin – PNAS. Ramsay Macdonald, Brendan J. Mahoney, Jess Soule, Andrew K. Goring, Jordan Ford, Joseph A. Loo*, Duilio Cascio, and Robert T. Clubb*.