Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Nitrogenase iron protein

Gene

nifH

Organism
Methanospirillum hungatei JF-1 (strain ATCC 27890 / DSM 864 / NBRC 100397 / JF-1)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

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

8 reduced ferredoxin + 8 H+ + N2 + 16 ATP + 16 H2O = 8 oxidized ferredoxin + H2 + 2 NH3 + 16 ADP + 16 phosphate.UniRule annotation

Cofactori

[4Fe-4S] clusterUniRule annotationNote: Binds 1 [4Fe-4S] cluster per dimer.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi95Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation1
Metal bindingi128Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi8 – 15ATPUniRule annotation8

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Nitrogen fixation

Keywords - Ligandi

4Fe-4S, ATP-binding, 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:Mhun_0793
OrganismiMethanospirillum hungatei JF-1 (strain ATCC 27890 / DSM 864 / NBRC 100397 / JF-1)
Taxonomic identifieri323259 [NCBI]
Taxonomic lineageiArchaeaEuryarchaeotaMethanomicrobiaMethanomicrobialesMethanospirillaceaeMethanospirillum
Proteomesi
  • UP000001941 Componenti: Chromosome

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10002118741 – 280Nitrogenase iron proteinAdd BLAST280

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei98ADP-ribosylarginine; by dinitrogenase reductase ADP-ribosyltransferaseUniRule annotation1

Post-translational modificationi

The reversible ADP-ribosylation of Arg-98 inactivates the nitrogenase reductase and regulates nitrogenase activity.UniRule annotation

Keywords - PTMi

ADP-ribosylation

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi323259.Mhun_0793.

Structurei

3D structure databases

ProteinModelPortaliQ2FUB7.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the NifH/BchL/ChlL family.UniRule annotation

Phylogenomic databases

eggNOGiarCOG00590. Archaea.
COG1348. LUCA.
HOGENOMiHOG000228825.
KOiK02588.
OMAiRIIENDM.

Family and domain databases

CDDicd02040. NifH. 1 hit.
Gene3Di3.40.50.300. 1 hit.
HAMAPiMF_00533. NifH. 1 hit.
InterProiIPR030655. NifH/chlL_CS.
IPR000392. Nitogenase_NifH/Reductase_ChlL.
IPR005977. Nitrogenase_Fe_NifH.
IPR027417. P-loop_NTPase.
[Graphical view]
PIRSFiPIRSF000363. Nitrogenase_iron. 1 hit.
PRINTSiPR00091. NITROGNASEII.
SUPFAMiSSF52540. SSF52540. 1 hit.
PROSITEiPS00746. NIFH_FRXC_1. 1 hit.
PS00692. NIFH_FRXC_2. 1 hit.
PS51026. NIFH_FRXC_3. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q2FUB7-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKQIALYGKG GIGKSTTSAN LSAALVNRGL SVMQIGCDPK RDSTRMLMKG
60 70 80 90 100
ILIPTVLDLI RERGEENLTL DDVVFTGYKG VRCVEAGGPE PGVGCAGRGI
110 120 130 140 150
IATFQLLERL SAFDEDIIVY DVLGDVVCGG FAMPMRKGYA QEIYLVTSGE
160 170 180 190 200
LMSLYAANNI CKAISRISQN VRQVCRLGGV ICNSRNLPDE EKLVGAFASE
210 220 230 240 250
VGSKIIAYIP RSGLVQYAEL NNQTVIEFAP DSSLSATYQS LAEEIMTNTD
260 270 280
FVIPKPLEIE ELEKLARSYL PTIDHQGINH
Length:280
Mass (Da):30,372
Last modified:March 21, 2006 - v1
Checksum:iCA9398B775AE1C4D
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000254 Genomic DNA. Translation: ABD40545.1.
RefSeqiWP_011447824.1. NC_007796.1.

Genome annotation databases

EnsemblBacteriaiABD40545; ABD40545; Mhun_0793.
GeneIDi3924521.
KEGGimhu:Mhun_0793.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000254 Genomic DNA. Translation: ABD40545.1.
RefSeqiWP_011447824.1. NC_007796.1.

3D structure databases

ProteinModelPortaliQ2FUB7.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi323259.Mhun_0793.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABD40545; ABD40545; Mhun_0793.
GeneIDi3924521.
KEGGimhu:Mhun_0793.

Phylogenomic databases

eggNOGiarCOG00590. Archaea.
COG1348. LUCA.
HOGENOMiHOG000228825.
KOiK02588.
OMAiRIIENDM.

Family and domain databases

CDDicd02040. NifH. 1 hit.
Gene3Di3.40.50.300. 1 hit.
HAMAPiMF_00533. NifH. 1 hit.
InterProiIPR030655. NifH/chlL_CS.
IPR000392. Nitogenase_NifH/Reductase_ChlL.
IPR005977. Nitrogenase_Fe_NifH.
IPR027417. P-loop_NTPase.
[Graphical view]
PIRSFiPIRSF000363. Nitrogenase_iron. 1 hit.
PRINTSiPR00091. NITROGNASEII.
SUPFAMiSSF52540. SSF52540. 1 hit.
PROSITEiPS00746. NIFH_FRXC_1. 1 hit.
PS00692. NIFH_FRXC_2. 1 hit.
PS51026. NIFH_FRXC_3. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiNIFH_METHJ
AccessioniPrimary (citable) accession number: Q2FUB7
Entry historyi
Integrated into UniProtKB/Swiss-Prot: September 22, 2009
Last sequence update: March 21, 2006
Last modified: November 2, 2016
This is version 69 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.