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P83794

- UCRI_MASLA

UniProt

P83794 - UCRI_MASLA

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Protein
Cytochrome b6-f complex iron-sulfur subunit
Gene
petC
Organism
Mastigocladus laminosus (Fischerella sp.)
Status
Reviewed - Annotation score: 5 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

Catalytic activityi

Plastoquinol + 2 oxidized plastocyanin + 2 H+(Side 1) = plastoquinone + 2 reduced plastocyanin + 4 H+(Side 2).UniRule annotation

Cofactori

Binds 1 2Fe-2S cluster per subunit.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi108 – 1081Iron-sulfur (2Fe-2S)
Metal bindingi110 – 1101Iron-sulfur (2Fe-2S); via pros nitrogen
Metal bindingi126 – 1261Iron-sulfur (2Fe-2S)
Metal bindingi129 – 1291Iron-sulfur (2Fe-2S); via pros nitrogen

GO - Molecular functioni

  1. 2 iron, 2 sulfur cluster binding Source: UniProtKB-KW
  2. electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity Source: UniProtKB-HAMAP
  3. metal ion binding Source: UniProtKB-KW
  4. plastoquinol--plastocyanin reductase activity Source: UniProtKB-HAMAP
  5. ubiquinol-cytochrome-c reductase activity Source: InterPro
Complete GO annotation...

GO - Biological processi

  1. photosynthesis Source: UniProtKB-HAMAP
Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Electron transport, Transport

Keywords - Ligandi

2Fe-2S, Iron, Iron-sulfur, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome b6-f complex iron-sulfur subunit (EC:1.10.9.1)
Alternative name(s):
Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein
Short name:
ISP
Short name:
RISP
Rieske iron-sulfur protein
Gene namesi
Name:petC
OrganismiMastigocladus laminosus (Fischerella sp.)
Taxonomic identifieri83541 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaStigonematalesMastigocladus

Subcellular locationi

Cellular thylakoid membrane; Single-pass membrane protein By similarity
Note: The transmembrane helix obliquely spans the membrane in one monomer, and its extrinsic C-terminal domain is part of the other monomer.UniRule annotation

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei21 – 4323HelicalUniRule annotation
Add
BLAST

GO - Cellular componenti

  1. integral component of membrane Source: UniProtKB-KW
  2. thylakoid membrane Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Membrane, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 179179Cytochrome b6-f complex iron-sulfur subunitUniRule annotation
PRO_0000127775Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Disulfide bondi113 ↔ 128UniRule annotation

Keywords - PTMi

Disulfide bond

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.

Structurei

Secondary structure

Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Helixi13 – 4230
Beta strandi59 – 613
Helixi66 – 716
Beta strandi80 – 823
Beta strandi84 – 874
Beta strandi88 – 914
Beta strandi97 – 993
Beta strandi101 – 1055
Turni109 – 1113
Beta strandi119 – 1257
Turni127 – 1293
Beta strandi131 – 1333
Beta strandi135 – 1373
Beta strandi141 – 1433
Beta strandi150 – 1545
Beta strandi156 – 1594
Beta strandi161 – 1644
Turni170 – 1723

3D structure databases

Select the link destinations:
PDBe
RCSB PDB
PDBj
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1VF5X-ray3.00D/Q1-179[»]
2D2CX-ray3.80D/Q1-179[»]
2E74X-ray3.00D1-179[»]
2E75X-ray3.55D1-179[»]
2E76X-ray3.41D1-179[»]
4H0LX-ray3.25D1-179[»]
4H13X-ray3.07D1-179[»]
4I7ZX-ray2.80D1-179[»]
ProteinModelPortaliP83794.
SMRiP83794. Positions 9-179.

Miscellaneous databases

EvolutionaryTraceiP83794.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini61 – 162102Rieske
Add
BLAST

Sequence similaritiesi

Contains 1 Rieske domain.

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

Gene3Di2.102.10.10. 1 hit.
HAMAPiMF_01335. Cytb6_f_Rieske.
InterProiIPR014909. Cyt_b6-f_cplx_Fe-S_su.
IPR023960. Cyt_b6_f_Rieske.
IPR017941. Rieske_2Fe-2S.
IPR014349. Rieske_Fe-S_prot.
IPR005805. Rieske_Fe-S_prot_C.
[Graphical view]
PANTHERiPTHR10134. PTHR10134. 1 hit.
PfamiPF08802. CytB6-F_Fe-S. 1 hit.
PF00355. Rieske. 1 hit.
[Graphical view]
PRINTSiPR00162. RIESKE.
SUPFAMiSSF50022. SSF50022. 1 hit.
PROSITEiPS51296. RIESKE. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P83794-1 [UniParc]FASTAAdd to Basket

« Hide

MAQFTESMDV PDMGRRQFMN LLAFGTVTGV ALGALYPLVK YFIPPSGGAV    50
GGGTTAKDKL GNNVKVSKFL ESHNAGDRVL VQGLKGDPTY IVVESKEAIR 100
DYGINAVCTH LGCVVPWNAA ENKFKCPCHG SQYDETGKVI RGPAPLSLAL 150
CHATVQDDNI VLTPWTETDF RTGEKPWWV 179
Length:179
Mass (Da):19,401
Last modified:June 21, 2005 - v2
Checksum:i3797DC66C5AFAD6C
GO

Sequence conflict

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sequence conflicti138 – 1381K → R1 Publication

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AY390356 Genomic DNA. Translation: AAR26240.1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AY390356 Genomic DNA. Translation: AAR26240.1 .

3D structure databases

Select the link destinations:
PDBe
RCSB PDB
PDBj
Links Updated
Entry Method Resolution (Å) Chain Positions PDBsum
1VF5 X-ray 3.00 D/Q 1-179 [» ]
2D2C X-ray 3.80 D/Q 1-179 [» ]
2E74 X-ray 3.00 D 1-179 [» ]
2E75 X-ray 3.55 D 1-179 [» ]
2E76 X-ray 3.41 D 1-179 [» ]
4H0L X-ray 3.25 D 1-179 [» ]
4H13 X-ray 3.07 D 1-179 [» ]
4I7Z X-ray 2.80 D 1-179 [» ]
ProteinModelPortali P83794.
SMRi P83794. Positions 9-179.
ModBasei Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Miscellaneous databases

EvolutionaryTracei P83794.

Family and domain databases

Gene3Di 2.102.10.10. 1 hit.
HAMAPi MF_01335. Cytb6_f_Rieske.
InterProi IPR014909. Cyt_b6-f_cplx_Fe-S_su.
IPR023960. Cyt_b6_f_Rieske.
IPR017941. Rieske_2Fe-2S.
IPR014349. Rieske_Fe-S_prot.
IPR005805. Rieske_Fe-S_prot_C.
[Graphical view ]
PANTHERi PTHR10134. PTHR10134. 1 hit.
Pfami PF08802. CytB6-F_Fe-S. 1 hit.
PF00355. Rieske. 1 hit.
[Graphical view ]
PRINTSi PR00162. RIESKE.
SUPFAMi SSF50022. SSF50022. 1 hit.
PROSITEi PS51296. RIESKE. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. "Cloning and characterization of the petBD and petCA operon from the thermophilic cyanobacterium Mastigocladus laminosus."
    Yan J., Zhang H., Cramer W.A.
    Submitted (SEP-2003) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
  2. "Structure of the cytochrome b6f complex of oxygenic photosynthesis: tuning the cavity."
    Kurisu G., Zhang H., Smith J.L., Cramer W.A.
    Science 302:1009-1014(2003) [PubMed] [Europe PMC] [Abstract]
    Cited for: X-RAY CRYSTALLOGRAPHY (3.0 ANGSTROMS).

Entry informationi

Entry nameiUCRI_MASLA
AccessioniPrimary (citable) accession number: P83794
Secondary accession number(s): Q5YJJ8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 10, 2004
Last sequence update: June 21, 2005
Last modified: June 11, 2014
This is version 78 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Miscellaneous

The Rieske iron-sulfur protein is a high potential 2Fe-2S protein.

Keywords - Technical termi

3D-structure

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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