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Protein

Cytochrome f

Gene

petA

Organism
Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions.UniRule annotation

Cofactori

hemeUniRule annotationNote: Binds 1 heme group covalently.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi45Iron (heme axial ligand); via amino nitrogenUniRule annotation1
Binding sitei66Heme (covalent)UniRule annotation1
Binding sitei69Heme (covalent)UniRule annotation1
Metal bindingi70Iron (heme axial ligand)UniRule annotation1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

Heme, Iron, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome fUniRule annotation
Gene namesi
Name:petAUniRule annotation
Ordered Locus Names:all2452
OrganismiNostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)
Taxonomic identifieri103690 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaNostocalesNostocaceaeNostoc
Proteomesi
  • UP000002483 Componenti: Chromosome

Subcellular locationi

  • Cellular thylakoid membrane UniRule annotation; Single-pass membrane protein UniRule annotation

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei299 – 318HelicalUniRule annotationAdd BLAST20

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 44UniRule annotationAdd BLAST44
ChainiPRO_000002384245 – 333Cytochrome fAdd BLAST289

Interactioni

Subunit structurei

The 4 large subunits of the cytochrome b6-f complex are cytochrome b6, subunit IV (17 kDa polypeptide, PetD), cytochrome f and the Rieske protein, while the 4 small subunits are PetG, PetL, PetM and PetN. The complex functions as a dimer.UniRule annotation

Protein-protein interaction databases

DIPiDIP-61002N.
STRINGi103690.all2452.

Structurei

Secondary structure

1333
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi46 – 52Combined sources7
Helixi65 – 68Combined sources4
Beta strandi77 – 79Combined sources3
Beta strandi82 – 84Combined sources3
Beta strandi89 – 95Combined sources7
Beta strandi109 – 112Combined sources4
Beta strandi115 – 121Combined sources7
Helixi131 – 133Combined sources3
Helixi136 – 142Combined sources7
Beta strandi148 – 151Combined sources4
Beta strandi157 – 164Combined sources8
Turni165 – 167Combined sources3
Beta strandi169 – 176Combined sources8
Helixi180 – 182Combined sources3
Beta strandi188 – 200Combined sources13
Beta strandi212 – 214Combined sources3
Beta strandi219 – 222Combined sources4
Beta strandi232 – 236Combined sources5
Beta strandi238 – 241Combined sources4
Beta strandi246 – 248Combined sources3
Beta strandi249 – 251Combined sources3
Beta strandi253 – 259Combined sources7
Beta strandi274 – 276Combined sources3
Beta strandi283 – 293Combined sources11
Helixi296 – 329Combined sources34

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1TU2NMR-B45-298[»]
2ZT9X-ray3.00C45-333[»]
4H44X-ray2.70C45-333[»]
4OGQX-ray2.50C1-333[»]
ProteinModelPortaliQ93SW9.
SMRiQ93SW9.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiQ93SW9.

Family & Domainsi

Sequence similaritiesi

Belongs to the cytochrome f family.UniRule annotation

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG4105D1D. Bacteria.
ENOG410XPEN. LUCA.
HOGENOMiHOG000024481.
KOiK02634.
OMAiHVGGNRG.
OrthoDBiPOG091H13JA.

Family and domain databases

Gene3Di1.20.5.700. 1 hit.
2.60.40.830. 2 hits.
HAMAPiMF_00610. Cytb6_f_cytF. 1 hit.
InterProiIPR024058. Cyt-f_TM.
IPR002325. Cyt_f.
IPR024094. Cyt_f_lg_dom.
IPR011054. Rudment_hybrid_motif.
[Graphical view]
PfamiPF01333. Apocytochr_F_C. 1 hit.
PF16639. Apocytochr_F_N. 1 hit.
[Graphical view]
PRINTSiPR00610. CYTOCHROMEF.
SUPFAMiSSF103431. SSF103431. 1 hit.
SSF49441. SSF49441. 2 hits.
SSF51246. SSF51246. 1 hit.
PROSITEiPS51010. CYTF. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q93SW9-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MRNACTRARL TRTARAMVKT LFIAIASVTF FFTSDLALPQ SAAAYPFWAQ
60 70 80 90 100
QTYPETPREP TGRIVCANCH LAAKPTEVEV PQSVLPDTVF KAVVKIPYDT
110 120 130 140 150
SVQQVGADGS KVGLNVGAVL MLPEGFKIAP EDRIPEELKE EIGDVYFQPY
160 170 180 190 200
GEDKDNIVIV GPLPGEQYQE IVFPVLSPNP ANDKNIHFGK YSVHVGGNRG
210 220 230 240 250
RGQVYPTGEK SNNNLYSAAA TGTISKIAKQ EGEDGSVKYL VDIKTESGEV
260 270 280 290 300
VSDTIPAGPE LIVSEGQAVT AGDALTNNPN VGGFGQLDAE IVLQDANRVG
310 320 330
WLIAFVALVM LAQVMLVLKK KQVEKVQAAE MNF
Length:333
Mass (Da):35,925
Last modified:December 1, 2001 - v1
Checksum:i523055089993C728
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AJ319646 Genomic DNA. Translation: CAC39605.1.
BA000019 Genomic DNA. Translation: BAB74151.1.
PIRiAE2112.
RefSeqiWP_010996608.1. NC_003272.1.

Genome annotation databases

EnsemblBacteriaiBAB74151; BAB74151; BAB74151.
KEGGiana:all2452.
PATRICi22775096. VBINosSp37423_3014.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AJ319646 Genomic DNA. Translation: CAC39605.1.
BA000019 Genomic DNA. Translation: BAB74151.1.
PIRiAE2112.
RefSeqiWP_010996608.1. NC_003272.1.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1TU2NMR-B45-298[»]
2ZT9X-ray3.00C45-333[»]
4H44X-ray2.70C45-333[»]
4OGQX-ray2.50C1-333[»]
ProteinModelPortaliQ93SW9.
SMRiQ93SW9.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

DIPiDIP-61002N.
STRINGi103690.all2452.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAB74151; BAB74151; BAB74151.
KEGGiana:all2452.
PATRICi22775096. VBINosSp37423_3014.

Phylogenomic databases

eggNOGiENOG4105D1D. Bacteria.
ENOG410XPEN. LUCA.
HOGENOMiHOG000024481.
KOiK02634.
OMAiHVGGNRG.
OrthoDBiPOG091H13JA.

Miscellaneous databases

EvolutionaryTraceiQ93SW9.

Family and domain databases

Gene3Di1.20.5.700. 1 hit.
2.60.40.830. 2 hits.
HAMAPiMF_00610. Cytb6_f_cytF. 1 hit.
InterProiIPR024058. Cyt-f_TM.
IPR002325. Cyt_f.
IPR024094. Cyt_f_lg_dom.
IPR011054. Rudment_hybrid_motif.
[Graphical view]
PfamiPF01333. Apocytochr_F_C. 1 hit.
PF16639. Apocytochr_F_N. 1 hit.
[Graphical view]
PRINTSiPR00610. CYTOCHROMEF.
SUPFAMiSSF103431. SSF103431. 1 hit.
SSF49441. SSF49441. 2 hits.
SSF51246. SSF51246. 1 hit.
PROSITEiPS51010. CYTF. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiCYF_NOSS1
AccessioniPrimary (citable) accession number: Q93SW9
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 10, 2003
Last sequence update: December 1, 2001
Last modified: November 2, 2016
This is version 104 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

3D-structure, Complete proteome, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. 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.