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UniProtKB/Swiss-Prot entry Q72GD6


[Entry info] [Name and origin] [References] [Comments] [Cross-references] [Keywords] [Features] [Sequence] [Tools]

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Entry information
Entry name NQO9_THET2
Primary accession number Q72GD6
Secondary accession numbers None
Integrated into Swiss-Prot on July 11, 2006
Sequence was last modified on July 5, 2004 (Sequence version 1)
Annotations were last modified on    September 2, 2008 (Entry version 34)
Name and origin of the protein
Protein name NADH-quinone oxidoreductase subunit 9
Synonyms EC 1.6.99.5
NADH dehydrogenase I subunit 9
NDH-1 subunit 9
Gene name
Name: nqo9
OrderedLocusNames: TT_C1912
From
Thermus thermophilus (strain HB27 / ATCC BAA-163 / DSM 7039) [TaxID: 262724] [HAMAP proteome]
Taxonomy Bacteria; Deinococcus-Thermus; Deinococci; Thermales; Thermaceae; Thermus.
Protein existence 3: Inferred from homology;
References
[1]
NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
DOI=10.1038/nbt956; PubMed=15064768 [NCBI, ExPASy, EBI, Israel, Japan]
Henne A., Brueggemann H., Raasch C., Wiezer A., Hartsch T., Liesegang H., Johann A., Lienard T., Gohl O., Martinez-Arias R., Jacobi C., Starkuviene V., Schlenczeck S., Dencker S., Huber R., Klenk H.-P., Kramer W., Merkl R., Gottschalk G., Fritz H.-J.;
"The genome sequence of the extreme thermophile Thermus thermophilus.";
Nat. Biotechnol. 22:547-553(2004).
Comments
  • FUNCTION: NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is menaquinone. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient required for the synthesis of ATP. The role of the nqo9 subunit appears to provide a 'connecting chain' of two clusters between cluster N5 and the terminal cluster N2, and to stabilize the structure of the complex by interacting with other subunits (By similarity).
  • CATALYTIC ACTIVITY: NADH + quinone = NAD+ + quinol.
  • COFACTOR: Binds 2 4Fe-4S clusters per subunit (By similarity).
  • SUBUNIT: NDH-1 is composed of 15 different subunits, nqo1 to nqo15. The complex has a L-shaped structure, with the hydrophobic arm (subunits nqo7, nqo8 and nqo10 to nqo14) embedded in the membrane and the hydrophilic peripheral arm (subunits nqo1 to nqo6, nqo9 and nqo15) protruding into the bacterial cytoplasm. The hydrophilic domain contains all the redox centers (By similarity).
  • SUBCELLULAR LOCATION: Cell inner membrane; Peripheral membrane protein (Potential).
  • SIMILARITY: Belongs to the complex I 23 kDa subunit family.
  • SIMILARITY: Contains 2 4Fe-4S ferredoxin-type domains.
Copyright
Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.
Cross-references
Sequence databases
EMBL
AE017221; AAS82254.1; -; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
RefSeq YP_005881.1; -.
3D structure databases
SMR Q72GD6; 26-179.
ModBase Q72GD6.
Enzyme and pathway databases
BioCyc TTHE262724:TT_C1912-MON; -.
Ontologies
GO
GO:0005506; Molecular function: iron ion binding (inferred from electronic annotation from HAMAP).
GO:0055114; Biological process: oxidation reduction (inferred from electronic annotation from HAMAP).
GO:0019684; Biological process: photosynthesis, light reaction (inferred from electronic annotation from HAMAP).
QuickGo view.
Family and domain databases
HAMAP MF_01351; -; 1.
PBIL [Tree]
InterPro IPR001450; 4Fe4S_Fe_S_bd.
IPR010226; NADH_quinone_OxRdtase_I.
Graphical view of domain structure.
Pfam PF00037; Fer4; 2.
Pfam graphical view of domain structure.
PRINTS PR00353; 4FE4SFRDOXIN.
TIGRFAMs TIGR01971; NuoI; 1.
PROSITE PS00198; 4FE4S_FER_1; 2.
PS51379; 4FE4S_FER_2; 2.
PROSITE graphical view of domain structure (profiles).
BLOCKS Q72GD6.
Genome annotation databases
GeneID 2775293; -.
GenomeReviews AE017221_GR; TT_C1912.
Phylogenomic databases
HOGENOM Q72GD6; -.
Genome annotation databases
CMR Q72GD6; TT_C1912.
Other
ProtoNet Q72GD6.
UniRef View cluster of proteins with at least 50% / 90% / 100% identity.
Keywords
4Fe-4S; Cell inner membrane; Cell membrane; Complete proteome; Iron; Iron-sulfur; Membrane; Metal-binding; NAD; Oxidoreductase; Quinone; Repeat.
Features
SEVIEWER logo Feature table viewer FT aligner logo Feature aligner
KeyFrom   To Length Description FTId
CHAIN   1   182  182     NADH-quinone oxidoreductase subunit 9. PRO_0000245755
DOMAIN   43    73  31     4Fe-4S ferredoxin-type 1. 
DOMAIN   89   118  30     4Fe-4S ferredoxin-type 2. 
METAL   53    53        Iron-sulfur 1 (4Fe-4S) (By similarity). 
METAL   56    56        Iron-sulfur 1 (4Fe-4S) (By similarity). 
METAL   59    59        Iron-sulfur 1 (4Fe-4S) (By similarity). 
METAL   63    63        Iron-sulfur 2 (4Fe-4S) (By similarity). 
METAL   98    98        Iron-sulfur 2 (4Fe-4S) (By similarity). 
METAL   101   101        Iron-sulfur 2 (4Fe-4S) (By similarity). 
METAL   104   104        Iron-sulfur 2 (4Fe-4S) (By similarity). 
METAL   108   108        Iron-sulfur 1 (4Fe-4S) (By similarity). 
Sequence information
Length: 182 AA [This is the length of the unprocessed precursor] Molecular weight: 20080 Da [This is the MW of the unprocessed precursor] CRC64: 054A9F7942C64C66 [This is a checksum on the sequence]
        10         20         30         40         50         60 
MTLKALAQSL GITLKYLFSK PVTVPYPDAP VALKPRFHGR HVLTRHPNGL EKCIGCSLCA 

        70         80         90        100        110        120 
AACPAYAIYV EPAENDPENP VSAGERYAKV YEINMLRCIF CGLCEEACPT GAIVLGYDFE 

       130        140        150        160        170        180 
MADYEYSDLV YGKEDMLVDV VGTKPQRREA KRTGKPVKVG YVVPYVRPEL EGFKAPTEGG 


KR 

Q72GD6 in FASTA format

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