NIFS_FRASE
ID NIFS_FRASE Reviewed; 419 AA.
AC Q9Z5X5;
DT 27-APR-2001, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-1999, sequence version 1.
DT 03-AUG-2022, entry version 75.
DE RecName: Full=Cysteine desulfurase {ECO:0000250|UniProtKB:P05341};
DE EC=2.8.1.7 {ECO:0000250|UniProtKB:P05341};
DE AltName: Full=Nitrogenase metalloclusters biosynthesis protein NifS {ECO:0000250|UniProtKB:P05341};
GN Name=nifS {ECO:0000250|UniProtKB:P05341};
OS Frankia sp. (strain EuIK1).
OC Bacteria; Actinobacteria; Frankiales; Frankiaceae; Frankia;
OC unclassified Frankia.
OX NCBI_TaxID=47227;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA Chung-Sun A., Ji-Tae K., Won-Jin K., Won-Young Y.;
RT "Nif-gene organization and nucleotide sequences from Frankia EuIK1
RT strain.";
RL Submitted (JAN-1999) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the removal of elemental sulfur atoms from cysteine
CC to produce alanine. Seems to participate in the biosynthesis of the
CC nitrogenase metalloclusters by providing the inorganic sulfur required
CC for the Fe-S core formation. {ECO:0000250|UniProtKB:P05341}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[sulfur carrier]-H + L-cysteine = [sulfur carrier]-SH + L-
CC alanine; Xref=Rhea:RHEA:43892, Rhea:RHEA-COMP:14737, Rhea:RHEA-
CC COMP:14739, ChEBI:CHEBI:29917, ChEBI:CHEBI:35235, ChEBI:CHEBI:57972,
CC ChEBI:CHEBI:64428; EC=2.8.1.7;
CC Evidence={ECO:0000250|UniProtKB:P05341};
CC -!- COFACTOR:
CC Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC Evidence={ECO:0000250|UniProtKB:P05341};
CC -!- SUBUNIT: Homodimer. {ECO:0000250|UniProtKB:P05341}.
CC -!- SIMILARITY: Belongs to the class-V pyridoxal-phosphate-dependent
CC aminotransferase family. NifS/IscS subfamily. {ECO:0000305}.
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DR EMBL; AF119361; AAD17272.1; -; Genomic_DNA.
DR AlphaFoldDB; Q9Z5X5; -.
DR SMR; Q9Z5X5; -.
DR GO; GO:0031071; F:cysteine desulfurase activity; IEA:UniProtKB-EC.
DR GO; GO:0051536; F:iron-sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0030170; F:pyridoxal phosphate binding; IEA:InterPro.
DR GO; GO:0044571; P:[2Fe-2S] cluster assembly; IEA:InterPro.
DR GO; GO:0009399; P:nitrogen fixation; IEA:UniProtKB-KW.
DR Gene3D; 3.40.640.10; -; 1.
DR Gene3D; 3.90.1150.10; -; 1.
DR InterPro; IPR000192; Aminotrans_V_dom.
DR InterPro; IPR020578; Aminotrans_V_PyrdxlP_BS.
DR InterPro; IPR010240; Cys_deSase_IscS.
DR InterPro; IPR016454; Cysteine_dSase.
DR InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR InterPro; IPR015422; PyrdxlP-dep_Trfase_small.
DR PANTHER; PTHR11601:SF34; PTHR11601:SF34; 1.
DR Pfam; PF00266; Aminotran_5; 1.
DR PIRSF; PIRSF005572; NifS; 1.
DR SUPFAM; SSF53383; SSF53383; 1.
DR PROSITE; PS00595; AA_TRANSFER_CLASS_5; 1.
PE 3: Inferred from homology;
KW Iron; Iron-sulfur; Metal-binding; Nitrogen fixation; Pyridoxal phosphate;
KW Transferase.
FT CHAIN 1..419
FT /note="Cysteine desulfurase"
FT /id="PRO_0000150255"
FT REGION 392..419
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 405..419
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 333
FT /note="Cysteine persulfide intermediate"
FT /evidence="ECO:0000250|UniProtKB:P05341"
FT BINDING 69..70
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250|UniProtKB:P0A6B9"
FT BINDING 157
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250|UniProtKB:O29689"
FT BINDING 185
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250|UniProtKB:P0A6B9"
FT BINDING 205..207
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250|UniProtKB:P0A6B9"
FT BINDING 245
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250|UniProtKB:P0A6B9"
FT BINDING 333
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /note="via persulfide group"
FT /evidence="ECO:0000250|UniProtKB:O29689"
FT MOD_RES 208
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000250|UniProtKB:P0A6B9"
SQ SEQUENCE 419 AA; 43333 MW; E112EB80EE6D0D2E CRC64;
MIYLDHNATT PVDPRVVEVM LPLFTERFAN PASKHAPGQE ATRIVERARR EVASLAGARP
REIVFTSGAT EAANLAIGGV LATAEPGRRR ILVGATEHPA VLGAADAAVS AGSAVSADGT
TAAERIAVHP DGTVDVDDLR RRLGPDVALV AVMAANNETG AVNDPRPLVE AARSAGRCCC
ADVTQALGRV PVEFERTGVD LAVSSAHKLY GPKGVGALIA SKDAWSRLAP RVHGGGQERG
LRAGTLNTAG IAGFGAAARI AAESMADDGT RQRALVALLT ELLVKRLGPG AVELNGPVRA
RLPNTVNLRF VGAGADEVQA CAPRVAISAG SACSGGGDEP SHVLRAMGRT ATEARESLRF
SLGRATTTEE IRTAADLVAR AVLRVRSLSQ STPIQDEVRD DNRASSNSLN RGSAASKES
