Y13C MUTANT OF AZOTOBACTER VINELANDII FDI

Y13C Azotobacter vinelandii ferredoxin I. A designed [Fe-S] ligand motif contains a cysteine persulfide.

CYS 13 MODIFIED TO A PERSULFIDE, [3FE-4S] AND [4FE-4S] CLUSTERS AS IN NATIVE PROTEIN

AFVVTDNCIKCK(CSS)TDCVEVCPVDCFYEGPNFLVIHPDECIDCALCEPECPAQAIFSEDEVPEDMQEFIQLNAELAE
VWPNITEKKDPLPDAEDWDGVKGKLQHLER

AFVVTDNCIKCKCTDCVEVCPVDCFYEGPNFLVIHPDECIDCALCEPECPAQAIFSEDEVPEDMQEFIQLNAELAEVWPN
ITEKKDPLPDAEDWDGVKGKLQHLER

NOTE THAT THERE ARE TWO IDENTICAL COPIES OF THE Y13C MUTANT OF FERREDOXIN IN THE ASYMMETRIC UNIT, WITH CHAIN IDENTIFIERS A AND B, AND EACH COPY HAS A MUTATED RESIDUE AT POSITION 13 ( TYR -> CYS ) WHICH IS FURTHER MODIFIED TO A CYSTEINE PERSULFIDE.

AFVVTDNCIKCKYTDCVEVCPVDCFYEGPNFLVIHPDECIDCALCEPECPAQAIFSEDEVPEDMQEFIQLNAELAEVWPN
ITEKKDPLPDAEDWDGVKGKLQHLER