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Database: UniProt
Entry: A0A0D6KWP2_9CYAN
LinkDB: A0A0D6KWP2_9CYAN
Original site: A0A0D6KWP2_9CYAN 
ID   A0A0D6KWP2_9CYAN        Unreviewed;       325 AA.
AC   A0A0D6KWP2;
DT   27-MAY-2015, integrated into UniProtKB/TrEMBL.
DT   27-MAY-2015, sequence version 1.
DT   10-OCT-2018, entry version 21.
DE   RecName: Full=Nitrogenase iron protein {ECO:0000256|HAMAP-Rule:MF_00533};
DE            EC=1.18.6.1 {ECO:0000256|HAMAP-Rule:MF_00533};
DE   AltName: Full=Nitrogenase Fe protein {ECO:0000256|HAMAP-Rule:MF_00533};
DE   AltName: Full=Nitrogenase component II {ECO:0000256|HAMAP-Rule:MF_00533};
DE   AltName: Full=Nitrogenase reductase {ECO:0000256|HAMAP-Rule:MF_00533};
GN   Name=nifH {ECO:0000256|HAMAP-Rule:MF_00533};
GN   ORFNames=FDUTEX481_01915 {ECO:0000313|EMBL:EKF04237.1};
OS   Tolypothrix sp. PCC 7601.
OC   Bacteria; Cyanobacteria; Nostocales; Tolypothrichaceae; Tolypothrix.
OX   NCBI_TaxID=1188 {ECO:0000313|EMBL:EKF04237.1, ECO:0000313|Proteomes:UP000032761};
RN   [1] {ECO:0000313|EMBL:EKF04237.1, ECO:0000313|Proteomes:UP000032761}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 7601 / UTEX B 481 {ECO:0000313|Proteomes:UP000032761};
RX   PubMed=25953173;
RA   Yerrapragada S., Shukla A., Hallsworth-Pepin K., Choi K., Wollam A.,
RA   Clifton S., Qin X., Muzny D., Raghuraman S., Ashki H., Uzman A.,
RA   Highlander S.K., Fryszczyn B.G., Fox G.E., Tirumalai M.R., Liu Y.,
RA   Kim S., Kehoe D.M., Weinstock G.M.;
RT   "Extreme Sensory Complexity Encoded in the 10-Megabase Draft Genome
RT   Sequence of the Chromatically Acclimating Cyanobacterium Tolypothrix
RT   sp. PCC 7601.";
RL   Genome Announc. 3:0-0(2015).
CC   -!- FUNCTION: The key enzymatic reactions in nitrogen fixation are
CC       catalyzed by the nitrogenase complex, which has 2 components: the
CC       iron protein and the molybdenum-iron protein. {ECO:0000256|HAMAP-
CC       Rule:MF_00533}.
CC   -!- CATALYTIC ACTIVITY: 8 reduced ferredoxin + 8 H(+) + N(2) + 16 ATP
CC       + 16 H(2)O = 8 oxidized ferredoxin + H(2) + 2 NH(3) + 16 ADP + 16
CC       phosphate. {ECO:0000256|HAMAP-Rule:MF_00533,
CC       ECO:0000256|SAAS:SAAS00692418}.
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000256|HAMAP-Rule:MF_00533};
CC       Note=Binds 1 [4Fe-4S] cluster per dimer. {ECO:0000256|HAMAP-
CC       Rule:MF_00533};
CC   -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00533,
CC       ECO:0000256|SAAS:SAAS00700909}.
CC   -!- PTM: The reversible ADP-ribosylation of Arg inactivates the
CC       nitrogenase reductase and regulates nitrogenase activity.
CC       {ECO:0000256|PIRSR:PIRSR605977-50}.
CC   -!- PTM: The reversible ADP-ribosylation of Arg-104 inactivates the
CC       nitrogenase reductase and regulates nitrogenase activity.
CC       {ECO:0000256|HAMAP-Rule:MF_00533}.
CC   -!- SIMILARITY: Belongs to the NifH/BchL/ChlL family.
CC       {ECO:0000256|HAMAP-Rule:MF_00533, ECO:0000256|RuleBase:RU003688,
CC       ECO:0000256|SAAS:SAAS00700907}.
CC   -!- CAUTION: The sequence shown here is derived from an
CC       EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is
CC       preliminary data. {ECO:0000313|EMBL:EKF04237.1}.
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DR   EMBL; AGCR01000007; EKF04237.1; -; Genomic_DNA.
DR   RefSeq; WP_045868616.1; NZ_JH930357.1.
DR   EnsemblBacteria; EKF04237; EKF04237; FDUTEX481_01915.
DR   PATRIC; fig|1188.3.peg.1923; -.
DR   Proteomes; UP000032761; Unassembled WGS sequence.
DR   GO; GO:0016612; C:molybdenum-iron nitrogenase complex; IEA:InterPro.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0018697; F:carbonyl sulfide nitrogenase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0016163; F:nitrogenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009399; P:nitrogen fixation; IEA:UniProtKB-UniRule.
DR   CDD; cd02040; NifH; 1.
DR   HAMAP; MF_00533; NifH; 1.
DR   InterPro; IPR030655; NifH/chlL_CS.
DR   InterPro; IPR000392; NifH/frxC.
DR   InterPro; IPR005977; Nitrogenase_Fe_NifH.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   PANTHER; PTHR42864; PTHR42864; 1.
DR   Pfam; PF00142; Fer4_NifH; 1.
DR   PIRSF; PIRSF000363; Nitrogenase_iron; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   TIGRFAMs; TIGR01287; nifH; 1.
DR   PROSITE; PS00746; NIFH_FRXC_1; 1.
DR   PROSITE; PS00692; NIFH_FRXC_2; 1.
DR   PROSITE; PS51026; NIFH_FRXC_3; 1.
PE   3: Inferred from homology;
KW   4Fe-4S {ECO:0000256|HAMAP-Rule:MF_00533,
KW   ECO:0000256|RuleBase:RU003688, ECO:0000256|SAAS:SAAS00700918};
KW   ADP-ribosylation {ECO:0000256|HAMAP-Rule:MF_00533,
KW   ECO:0000256|PIRSR:PIRSR605977-50};
KW   ATP-binding {ECO:0000256|HAMAP-Rule:MF_00533,
KW   ECO:0000256|RuleBase:RU003688, ECO:0000256|SAAS:SAAS00700908};
KW   Complete proteome {ECO:0000313|Proteomes:UP000032761};
KW   Iron {ECO:0000256|HAMAP-Rule:MF_00533, ECO:0000256|RuleBase:RU003688,
KW   ECO:0000256|SAAS:SAAS00700910};
KW   Iron-sulfur {ECO:0000256|HAMAP-Rule:MF_00533,
KW   ECO:0000256|RuleBase:RU003688, ECO:0000256|SAAS:SAAS00700920};
KW   Metal-binding {ECO:0000256|HAMAP-Rule:MF_00533,
KW   ECO:0000256|RuleBase:RU003688, ECO:0000256|SAAS:SAAS00700915};
KW   Nitrogen fixation {ECO:0000256|HAMAP-Rule:MF_00533,
KW   ECO:0000256|SAAS:SAAS00692421};
KW   Nucleotide-binding {ECO:0000256|HAMAP-Rule:MF_00533,
KW   ECO:0000256|RuleBase:RU003688, ECO:0000256|SAAS:SAAS00700911};
KW   Oxidoreductase {ECO:0000256|HAMAP-Rule:MF_00533,
KW   ECO:0000256|RuleBase:RU003688, ECO:0000256|SAAS:SAAS00700919};
KW   Reference proteome {ECO:0000313|Proteomes:UP000032761}.
FT   NP_BIND      13     20       ATP. {ECO:0000256|HAMAP-Rule:MF_00533}.
FT   METAL       101    101       Iron-sulfur (4Fe-4S); shared with dimeric
FT                                partner. {ECO:0000256|HAMAP-Rule:
FT                                MF_00533}.
FT   METAL       135    135       Iron-sulfur (4Fe-4S); shared with dimeric
FT                                partner. {ECO:0000256|HAMAP-Rule:
FT                                MF_00533}.
FT   MOD_RES     104    104       ADP-ribosylarginine; by dinitrogenase
FT                                reductase ADP-ribosyltransferase.
FT                                {ECO:0000256|HAMAP-Rule:MF_00533,
FT                                ECO:0000256|PIRSR:PIRSR605977-50}.
SQ   SEQUENCE   325 AA;  35332 MW;  70D3E9B159771757 CRC64;
     MSGEKIRQIA FYGKGGIGKS TTSQNTLAAM AEVGQRILIV GCDPKADSTR LILHTKAQTT
     VLHLAAERGA VEDLELDEVV LQGFRGIKCV ESGGPEPGVG CAGRGIITAI NFLEENGAYS
     NVDFVSYDVL GDVVCGGFAM PIREGKAQEI YIVTSGEMMA MYAANNIARG ILKYAHSGGV
     RLGGLICNSR KTDREDELIT TLANRLSTQM IHFVPRDNIV QHAELRRMTV NEYAPDSNQA
     NEYRILADKV INNQNMAIPT PIEMDELEAL LIEFGILESD DEKEKLVGIS KAQEETTKKQ
     EDAQGEALEA VKKGNVEIVS GRDKK
//
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