ID U9VRH2_9CYAN Unreviewed; 490 AA.
AC U9VRH2;
DT 22-JAN-2014, integrated into UniProtKB/TrEMBL.
DT 22-JAN-2014, sequence version 1.
DT 27-MAR-2024, entry version 48.
DE RecName: Full=FeMo cofactor biosynthesis protein NifB {ECO:0000256|ARBA:ARBA00021702};
DE AltName: Full=Nitrogenase cofactor maturase NifB {ECO:0000256|ARBA:ARBA00032102};
DE AltName: Full=Radical SAM assemblase NifB {ECO:0000256|ARBA:ARBA00030926};
GN ORFNames=N836_16000 {ECO:0000313|EMBL:ESA34607.1};
OS Leptolyngbya sp. Heron Island J.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Leptolyngbyales; Leptolyngbyaceae;
OC Leptolyngbya group; Leptolyngbya.
OX NCBI_TaxID=1385935 {ECO:0000313|EMBL:ESA34607.1, ECO:0000313|Proteomes:UP000017515};
RN [1] {ECO:0000313|EMBL:ESA34607.1, ECO:0000313|Proteomes:UP000017515}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Heron Island J {ECO:0000313|EMBL:ESA34607.1,
RC ECO:0000313|Proteomes:UP000017515};
RX PubMed=24503993;
RA Paul R., Jinkerson R.E., Buss K., Steel J., Mohr R., Hess W.R., Chen M.,
RA Fromme P.;
RT "Draft Genome Sequence of the Filamentous Cyanobacterium Leptolyngbya sp.
RT Strain Heron Island J, Exhibiting Chromatic Acclimation.";
RL Genome Announc. 2:e01166-e01113(2014).
CC -!- FUNCTION: Involved in the biosynthesis of the iron-molybdenum cofactor
CC (FeMo-co or M-cluster) found in the dinitrogenase enzyme of the
CC nitrogenase complex in nitrogen-fixing microorganisms. NifB catalyzes
CC the crucial step of radical SAM-dependent carbide insertion that occurs
CC concomitant with the insertion of a 9th sulfur and the
CC rearrangement/coupling of two [4Fe-4S] clusters into a [8Fe-9S-C]
CC cluster, the precursor to the M-cluster.
CC {ECO:0000256|ARBA:ARBA00003522}.
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000256|ARBA:ARBA00001966};
CC -!- PATHWAY: Cofactor biosynthesis; Fe-Mo cofactor biosynthesis.
CC {ECO:0000256|ARBA:ARBA00005155}.
CC -!- SIMILARITY: Belongs to the radical SAM superfamily. NifB family.
CC {ECO:0000256|ARBA:ARBA00006804}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:ESA34607.1}.
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DR EMBL; AWNH01000073; ESA34607.1; -; Genomic_DNA.
DR AlphaFoldDB; U9VRH2; -.
DR STRING; 1385935.N836_16000; -.
DR PATRIC; fig|1385935.3.peg.4675; -.
DR eggNOG; COG0535; Bacteria.
DR OrthoDB; 9764725at2; -.
DR UniPathway; UPA00782; -.
DR Proteomes; UP000017515; Unassembled WGS sequence.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:InterPro.
DR GO; GO:0003824; F:catalytic activity; IEA:InterPro.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0009399; P:nitrogen fixation; IEA:UniProtKB-KW.
DR CDD; cd00852; NifB; 1.
DR CDD; cd01335; Radical_SAM; 1.
DR Gene3D; 3.20.20.70; Aldolase class I; 1.
DR Gene3D; 3.30.420.130; Dinitrogenase iron-molybdenum cofactor biosynthesis domain; 1.
DR InterPro; IPR013785; Aldolase_TIM.
DR InterPro; IPR003731; Di-Nase_FeMo-co_biosynth.
DR InterPro; IPR036105; DiNase_FeMo-co_biosyn_sf.
DR InterPro; IPR000385; MoaA_NifB_PqqE_Fe-S-bd_CS.
DR InterPro; IPR005980; Nase_CF_NifB.
DR InterPro; IPR034165; NifB_C.
DR InterPro; IPR007197; rSAM.
DR NCBIfam; TIGR01290; nifB; 1.
DR PANTHER; PTHR43787:SF3; FEMO COFACTOR BIOSYNTHESIS PROTEIN NIFB; 1.
DR PANTHER; PTHR43787; FEMO COFACTOR BIOSYNTHESIS PROTEIN NIFB-RELATED; 1.
DR Pfam; PF02579; Nitro_FeMo-Co; 1.
DR Pfam; PF04055; Radical_SAM; 1.
DR SFLD; SFLDF00281; FeMo_cofactor_biosynthesis_pro; 1.
DR SFLD; SFLDG01068; FeMo_cofactor_biosynthesis_pro; 1.
DR SFLD; SFLDG01067; SPASM/twitch_domain_containing; 1.
DR SUPFAM; SSF53146; Nitrogenase accessory factor-like; 1.
DR SUPFAM; SSF102114; Radical SAM enzymes; 1.
DR PROSITE; PS01305; MOAA_NIFB_PQQE; 1.
DR PROSITE; PS51918; RADICAL_SAM; 1.
PE 3: Inferred from homology;
KW Iron {ECO:0000256|ARBA:ARBA00023004};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014};
KW Lyase {ECO:0000256|ARBA:ARBA00023239};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723};
KW Nitrogen fixation {ECO:0000256|ARBA:ARBA00023231};
KW Reference proteome {ECO:0000313|Proteomes:UP000017515};
KW S-adenosyl-L-methionine {ECO:0000256|ARBA:ARBA00022691}.
FT DOMAIN 68..319
FT /note="Radical SAM core"
FT /evidence="ECO:0000259|PROSITE:PS51918"
SQ SEQUENCE 490 AA; 54106 MW; BDBC4C4B28EB7956 CRC64;
MTPPPPTALA SAPTTTPELD ITLTKTKTMV KKSGGGCGCS TKNDAPSAMS ESLKARIEKH
PCYSEEAHHH YARMHVAVAP ACNIQCNYCN RKYDCANESR PGVVSELLTP EEAAHKVLVV
AGKIPQMTVL GIAGPGDPLA NPEKTFRTFE LIADKAPDIK LCLSTNGLML PDHVDRIKQL
NVDHVTITIN MVDPKVGEKI YPWVHYRRRR YRGIEGVKIL HERQMEGLQA LQEADILCKV
NSVLIPGIND EHLPEVNKAI RDRGAFLHNI MPLISAPEHG TYFGLNGQRG PNPKELKTVQ
DKCSGNMKMM RHCRQCRADA VGLLGEDRSQ EFTKEKFMDM SADYSLEKRQ AVHLGIEQTK
AAVAEKKQAS VNKRRTESPK VLVAVATKGG GLVNQHFGHA KEFMIYEVDA TEAKFVGHRK
VADYCQGGYG EEAALEGIIN TIIDCKALLT AKVGPCPQKA LQKAGLTVIE AYDVIETVAR
RFYDEHVLER
//
