ID   NIFK_HERSE     STANDARD;      PRT;   356 AA.
AC   P77875;
DT   15-JUL-1999 (Rel. 38, Created)
DT   15-JUL-1999 (Rel. 38, Last sequence update)
DT   25-OCT-2004 (Rel. 45, Last annotation update)
DE   Nitrogenase molybdenum-iron protein beta chain (EC 1.18.6.1)
DE   (Nitrogenase component I) (Dinitrogenase) (Fragment).
GN   Name=nifK;
OS   Herbaspirillum seropedicae.
OC   Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC   Oxalobacteraceae; Herbaspirillum.
OX   NCBI_TaxID=964;
RN   [1]
RP   NUCLEOTIDE SEQUENCE.
RC   STRAIN=Z78;
RX   MEDLINE=97365591; PubMed=9222418;
RA   Machado I.M.P., Yates M.G., Machado H.B., Souza E.M., Pedrosa F.O.;
RT   "Cloning and sequencing of the nitrogenase structural genes nifHDK of
RT   Herbaspirillum seropedicae.";
RL   Braz. J. Med. Biol. Res. 29:1599-1602(1996).
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.
CC   -!- CATALYTIC ACTIVITY: 3 reduced ferredoxin + 6 H(+) + N(2) + n ATP =
CC       3 oxidized ferredoxin + 2 NH(3) + n ADP + n phosphate.
CC   -!- SUBUNIT: Tetramer of two alpha and two beta chains that binds 30-
CC       32 Fe, 2 Mo, and inorganic sulfur.
CC   -!- SIMILARITY: Belongs to the nifD/nifK/nifE/nifN family.
CC   --------------------------------------------------------------------------
CC   This Swiss-Prot entry is copyright. It is produced through a collaboration
CC   between  the Swiss Institute of Bioinformatics  and the  EMBL outstation -
CC   the European Bioinformatics Institute.  There are no  restrictions on  its
CC   use as long as its content is in no way modified and this statement is not
CC   removed.
CC   --------------------------------------------------------------------------
DR   EMBL; Z54207; CAA90934.1; -.
DR   HSSP; P07329; 1M1N.
DR   InterPro; IPR005976; NifK.
DR   InterPro; IPR000318; Nitrognse_comp1.
DR   InterPro; IPR000510; Oxred_nitrognse1.
DR   Pfam; PF00148; Oxidored_nitro; 1.
DR   TIGRFAMs; TIGR01286; nifK; 1.
DR   PROSITE; PS00699; NITROGENASE_1_1; 1.
DR   PROSITE; PS00090; NITROGENASE_1_2; 1.
KW   Iron-sulfur; Molybdenum; Nitrogen fixation; Oxidoreductase.
FT   NON_TER     356    356
SQ   SEQUENCE   356 AA;  39280 MW;  009F5D4037732530 CRC64;
     MPQNADSVLD HENLFRQPEY RELFARKKEE FEFAVPLDKV QDVAEWTKTK EYQQKNFARE
     ALTINPAKAC QPLGAVYAAV GFQNTLPFVH GSQGCVAYYR SHFSRHFKEP TSCVSSSMTE
     DAAVFGGLNN MIDGLANALS LYKPEMIAVS TTCMAEVIGD DLDSFIKNAK DKGSVPAEYD
     VPFAHTPAFV GSHVTGYDNA LKGILTHFWD GKAGTVPALE RKPNERINFI GGFDGFVVGN
     LPEVKRIFKL MGVDGTIVCD PSEVWNTPTD GQFRMYSGGT TKQEVIEALD AKATVVFQEF
     STLKTAKYIA EKGQEVVTLN HPMGVAGTDQ FLMELSRLSG QPIPAELELE RGRLVD
//