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They certainly expected this criteria to be immutable though

braunii and non-seed plants, only one isoform with a CPYC active site is present (GRXC5), indicating that CPYC is the ancestral active site motif of this GRX isoform, while the GRXS12 variant only appeared in angiosperm evolution

This leads to an impaired conversion of primary to secondary BAs, markedly shifting the overall BA composition

And one shouldn't expect anything else from them

Endometriosis is a painful condition in which endometrial cells are found outside the womb

As such, it is not altogether surprising that nerve cells are heavily reliant on copper due to the critical role of the metal as a catalytic cofactor in cytochrome c oxidase (Complex IV), the final electron acceptor in the electron transport chain