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Q42496 (PETM_CHLRE) Reviewed, UniProtKB/Swiss-Prot

Last modified February 19, 2014. Version 64. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Cytochrome b6-f complex subunit 7, chloroplastic
Alternative name(s):
Cytochrome b6-f complex 4 kDa subunit
Cytochrome b6-f complex subunit PetM
Cytochrome b6-f complex subunit VII
Gene names
Name:petM
Synonyms:petX
OrganismChlamydomonas reinhardtii (Chlamydomonas smithii)
Taxonomic identifier3055 [NCBI]
Taxonomic lineageEukaryotaViridiplantaeChlorophytaChlorophyceaeChlamydomonadalesChlamydomonadaceaeChlamydomonas

Protein attributes

Sequence length99 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

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. HAMAP-Rule MF_00396

Subunit structure

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.

Subcellular location

Plastidchloroplast thylakoid membrane; Single-pass membrane protein HAMAP-Rule MF_00396.

Sequence similarities

Belongs to the PetM family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Transit peptide1 – 6060Chloroplast Ref.1 Ref.3 Ref.4
Chain61 – 9939Cytochrome b6-f complex subunit 7, chloroplastic HAMAP-Rule MF_00396
PRO_0000023864

Regions

Topological domain61 – 677Lumenal Potential
Transmembrane68 – 8821Helical; Potential
Topological domain89 – 9911Stromal Potential

Secondary structure

... 99
Helix Strand Turn

Details...

Sequences

Sequence LengthMass (Da)Tools
Q42496 [UniParc].

Last modified November 1, 1997. Version 1.
Checksum: 5B3E45315A701AE4

FASTA999,998
        10         20         30         40         50         60 
MAMSIAARSA CCGVAAPRSS TVRVAAARPA VRPSLRTAGQ KAAPSRGVAT KAVNELAMIA 

        70         80         90 
GEAEFIAGTA LTMVGMTLVG LAIGFVLLRV ESLVEEGKI 

« Hide

References

[1]"The 4-kDa nuclear-encoded PetM polypeptide of the chloroplast cytochrome b6f complex. Nucleic acid and protein sequences, targeting signals, transmembrane topology."
de Vitry C., Breyton C., Pierre Y., Popot J.-L.
J. Biol. Chem. 271:10667-10671(1996) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA], PROTEIN SEQUENCE OF 61-98.
Strain: cw15.
[2]"Nucleotide sequence of the PetM gene encoding a 4 kDa subunit of the cytochrome b6f complex from Chlamydomonas reinhardtii."
Ketchner S.L., Malkin R.
Biochim. Biophys. Acta 1273:195-197(1996) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
Strain: CC-1928.
[3]"Purification and characterization of the cytochrome b6 f complex from Chlamydomonas reinhardtii."
Pierre Y., Breyton C., Kramer D., Popot J.-L.
J. Biol. Chem. 270:29342-29349(1995) [PubMed] [Europe PMC] [Abstract]
Cited for: PROTEIN SEQUENCE OF 61-87, CHARACTERIZATION.
Strain: WT12.
[4]"Low molecular weight subunits associated with the cytochrome b6f complexes from spinach and Chlamydomonas reinhardtii."
Schmidt C.L., Malkin R.
Photosyn. Res. 38:73-81(1993)
Cited for: PROTEIN SEQUENCE OF 61-82.
Strain: CC-124.
[5]"An atypical haem in the cytochrome b(6)f complex."
Stroebel D., Choquet Y., Popot J.-L., Picot D.
Nature 426:413-418(2003) [PubMed] [Europe PMC] [Abstract]
Cited for: X-RAY CRYSTALLOGRAPHY (3.1 ANGSTROMS) OF 61-99.
+Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
X92488 mRNA. Translation: CAA63221.1.
U36401 Genomic DNA. Translation: AAC49525.1.
PIRT08070.
RefSeqXP_001694096.1. XM_001694044.1.
UniGeneCre.6650.

3D structure databases

PDBe
RCSB PDB
PDBj
EntryMethodResolution (Å)ChainPositionsPDBsum
1Q90X-ray3.10M61-99[»]
ProteinModelPortalQ42496.
SMRQ42496. Positions 62-95.
ModBaseSearch...
MobiDBSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID5719581.
KEGGcre:CHLREDRAFT_147968.

Phylogenomic databases

ProtClustDBCLSN2921866.

Enzyme and pathway databases

BioCycMetaCyc:CHLREDRAFT_147968-MONOMER.

Family and domain databases

HAMAPMF_00396. Cytb6_f_PetM.
InterProIPR012595. PetM_cyt_b6/f_cplx_su7.
[Graphical view]
PfamPF08041. PetM. 1 hit.
[Graphical view]
ProtoNetSearch...

Other

EvolutionaryTraceQ42496.

Entry information

Entry namePETM_CHLRE
AccessionPrimary (citable) accession number: Q42496
Entry history
Integrated into UniProtKB/Swiss-Prot: November 1, 1997
Last sequence update: November 1, 1997
Last modified: February 19, 2014
This is version 64 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

PDB cross-references

Index of Protein Data Bank (PDB) cross-references