PGRMC2 binds heme reversibly. Also, PGRMC2 can bind to AAAS, a subunit of the nuclear pore complex, suggesting nuclear import of the PGRMC2:heme complex through the NPC takes place (Jühlen et al, 2016; Parker et al, 2017; Galmozzi et al 2020).
Jühlen, R, Landgraf, D, Koehler, K, Huebner, A
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