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Disulfide pattern of the expressed, in vitro refolded CRF2(a) receptor N termini with an N- and C-terminal (His)6-tag (B,C), respectively, in comparison to the in vivo folded CRF1 receptor N terminus (A). Unbound cysteines are marked with *. Cysteine 1 in CRF2(a) receptor N termini is located in the signal sequence and labeled in italics.
