UniProtKB - C6B4Z0 (C6B4Z0_RHILS)
Protein
Nitrogenase iron protein
Gene
nifH
Organism
Rhizobium leguminosarum bv. trifolii (strain WSM1325)
Status
Functioni
The key enzymatic reactions in nitrogen fixation are catalyzed by the nitrogenase complex, which has 2 components: the iron protein and the molybdenum-iron protein.UniRule annotation
Catalytic activityi
- 16 ATP + 16 H2O + N2 + 8 reduced [2Fe-2S]-[ferredoxin] = 16 ADP + 6 H+ + H2 + 2 NH4+ + 8 oxidized [2Fe-2S]-[ferredoxin] + 16 phosphateUniRule annotationSAAS annotationEC:1.18.6.1UniRule annotationSAAS annotation
Cofactori
[4Fe-4S] clusterUniRule annotationNote: Binds 1 [4Fe-4S] cluster per dimer.UniRule annotation
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Metal bindingi | 99 | Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation | 1 | |
Metal bindingi | 133 | Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation | 1 |
Regions
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Nucleotide bindingi | 11 – 18 | ATPUniRule annotation | 8 |
GO - Molecular functioni
- 4 iron, 4 sulfur cluster binding Source: UniProtKB-KW
- ATP binding Source: UniProtKB-UniRule
- carbonyl sulfide nitrogenase activity Source: UniProtKB-EC
- metal ion binding Source: UniProtKB-KW
- nitrogenase activity Source: UniProtKB-UniRule
GO - Biological processi
- nitrogen fixation Source: UniProtKB-UniRule
Keywordsi
Molecular function | OxidoreductaseUniRule annotationSAAS annotationImported |
Biological process | Nitrogen fixationUniRule annotationSAAS annotation |
Ligand | 4Fe-4SUniRule annotationSAAS annotation, ATP-bindingUniRule annotationSAAS annotation, Iron, Iron-sulfur, Metal-binding, Nucleotide-binding |
Names & Taxonomyi
Protein namesi | Recommended name: Nitrogenase iron proteinUniRule annotation (EC:1.18.6.1UniRule annotation)Alternative name(s): Nitrogenase Fe proteinUniRule annotation Nitrogenase component IIUniRule annotation Nitrogenase reductaseUniRule annotation |
Gene namesi | Name:nifHUniRule annotation Ordered Locus Names:Rleg_4930Imported |
Encoded oni | Plasmid pR132501Imported |
Organismi | Rhizobium leguminosarum bv. trifolii (strain WSM1325)Imported |
Taxonomic identifieri | 395491 [NCBI] |
Taxonomic lineagei | Bacteria › Proteobacteria › Alphaproteobacteria › Rhizobiales › Rhizobiaceae › Rhizobium/Agrobacterium group › Rhizobium › |
Proteomesi |
|
PTM / Processingi
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Modified residuei | 102 | ADP-ribosylarginine; by dinitrogenase reductase ADP-ribosyltransferaseUniRule annotation | 1 |
Post-translational modificationi
The reversible ADP-ribosylation of Arg inactivates the nitrogenase reductase and regulates nitrogenase activity.UniRule annotation
The reversible ADP-ribosylation of Arg-102 inactivates the nitrogenase reductase and regulates nitrogenase activity.UniRule annotation
Keywords - PTMi
ADP-ribosylationUniRule annotationInteractioni
Subunit structurei
Homodimer.
UniRule annotationSAAS annotationFamily & Domainsi
Sequence similaritiesi
Phylogenomic databases
HOGENOMi | HOG000228826 |
KOi | K02588 |
OMAi | PGDIVCG |
OrthoDBi | 729012at2 |
Family and domain databases
HAMAPi | MF_00533 NifH, 1 hit |
InterProi | View protein in InterPro IPR030655 NifH/chlL_CS IPR000392 NifH/frxC IPR005977 Nitrogenase_Fe_NifH IPR027417 P-loop_NTPase |
PANTHERi | PTHR42864 PTHR42864, 1 hit |
Pfami | View protein in Pfam PF00142 Fer4_NifH, 1 hit |
PIRSFi | PIRSF000363 Nitrogenase_iron, 1 hit |
SUPFAMi | SSF52540 SSF52540, 1 hit |
TIGRFAMsi | TIGR01287 nifH, 1 hit |
PROSITEi | View protein in PROSITE PS00746 NIFH_FRXC_1, 1 hit PS00692 NIFH_FRXC_2, 1 hit PS51026 NIFH_FRXC_3, 1 hit |
i Sequence
Sequence statusi: Complete.
C6B4Z0-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MAALRQIAFY GKGGIGKSTT SQNTLAALVE LGQKILIVGC DPKADSTRLI
60 70 80 90 100
LNSKAQGTVL DLAATKGSVE DLELGDVLKT GYGGIKCVES GGPEPGVGCA
110 120 130 140 150
GRGVITSINF LEENGAYDDV DYVSYDVLGD VVCGGFAMPI RENKAQEIYI
160 170 180 190 200
VMSGEMMALY AANNIARGIL KYASAGSVRL GGLICNERQT DRELDLAEAL
210 220 230 240 250
AAKLNSKLIH FVPRDNIVQH AELRKMTVIQ YAPRSKQAAE YRWLAEKIHS
260 270 280 290
NSGKGTIPTP ITMEELEDML LDFGIMKSDE QMLEELLTKE MQATS
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | CP001623 Genomic DNA Translation: ACS59148.1 |
RefSeqi | WP_012755340.1, NC_012848.1 |
Genome annotation databases
EnsemblBacteriai | ACS59148; ACS59148; Rleg_4930 |
KEGGi | rlg:Rleg_4930 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | CP001623 Genomic DNA Translation: ACS59148.1 |
RefSeqi | WP_012755340.1, NC_012848.1 |
3D structure databases
ModBasei | Search... |
SWISS-MODEL-Workspacei | Submit a new modelling project... |
Genome annotation databases
EnsemblBacteriai | ACS59148; ACS59148; Rleg_4930 |
KEGGi | rlg:Rleg_4930 |
Phylogenomic databases
HOGENOMi | HOG000228826 |
KOi | K02588 |
OMAi | PGDIVCG |
OrthoDBi | 729012at2 |
Family and domain databases
HAMAPi | MF_00533 NifH, 1 hit |
InterProi | View protein in InterPro IPR030655 NifH/chlL_CS IPR000392 NifH/frxC IPR005977 Nitrogenase_Fe_NifH IPR027417 P-loop_NTPase |
PANTHERi | PTHR42864 PTHR42864, 1 hit |
Pfami | View protein in Pfam PF00142 Fer4_NifH, 1 hit |
PIRSFi | PIRSF000363 Nitrogenase_iron, 1 hit |
SUPFAMi | SSF52540 SSF52540, 1 hit |
TIGRFAMsi | TIGR01287 nifH, 1 hit |
PROSITEi | View protein in PROSITE PS00746 NIFH_FRXC_1, 1 hit PS00692 NIFH_FRXC_2, 1 hit PS51026 NIFH_FRXC_3, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | C6B4Z0_RHILS | |
Accessioni | C6B4Z0Primary (citable) accession number: C6B4Z0 | |
Entry historyi | Integrated into UniProtKB/TrEMBL: | September 1, 2009 |
Last sequence update: | September 1, 2009 | |
Last modified: | October 16, 2019 | |
This is version 73 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Unreviewed (UniProtKB/TrEMBL) |