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3.E.2.2.2
Cyanobacterial thylakoid membrane photosystem II.  Biophotovoltaic devices can be used to employ cyanobacteria such as Synechocystis PCC6803 at the anode of a microbial fuel cell to generate electrical power (Cereda et al. 2014).

Accession Number:Q57038
Protein Name:CYB6 aka PETB aka SLR0342
Length:222
Molecular Weight:25055.00
Species:Synechocystis sp [1148]
Number of TMSs:5
Location1 / Topology2 / Orientation3: Cellular thylakoid membrane1 / Multi-pass membrane protein2
Substrate H+

Cross database links:

eggNOG: COG1290
HEGENOM: HBG286086
RefSeq: NP_442079.1   
Entrez Gene ID: 952706   
Pfam: PF00033   
BioCyc: SSP1148:SLR0342-MONOMER   
KEGG: syn:slr0342   

Gene Ontology

GO:0009512 C:cytochrome b6f complex
GO:0016021 C:integral to membrane
GO:0042651 C:thylakoid membrane
GO:0045158 F:electron transporter, transferring electron...
GO:0046872 F:metal ion binding
GO:0016491 F:oxidoreductase activity
GO:0015979 P:photosynthesis
GO:0022904 P:respiratory electron transport chain
GO:0006810 P:transport

References (3)

[1] “Nucleotide sequence of the petB gene encoding cytochrome b6 from the mesophilic cyanobacterium Synechocystis PCC 6803: implications for evolution and function.”  Kruip J.et.al.   7803459
[2] “Sequence analysis of the genome of the unicellular cyanobacterium Synechocystis sp. strain PCC6803. I. Sequence features in the 1 Mb region from map positions 64% to 92% of the genome.”  Kaneko T.et.al.   8590279
[3] “Sequence analysis of the genome of the unicellular cyanobacterium Synechocystis sp. strain PCC6803. II. Sequence determination of the entire genome and assignment of potential protein-coding regions.”  Kaneko T.et.al.   8905231

External Searches:

  • Search: DB with
  • BLAST ExPASy (Swiss Institute of Bioinformatics (SIB) BLAST)
  • CDD Search (Conserved Domain Database)
  • Search COGs (Clusters of Orthologous Groups of proteins)
  • 2° Structure (Network Protein Sequence Analysis)

Analyze:

Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MFSKEVTESK VFQWFNDRLE VQAISDDIAS KYVPPHVNIF YCLGGLTLTC FLIQFATGFA 
61:	MTFYYKPTVT EAFASVQYIM NEVNFGWLIR SIHRWSASMM VLMMILHVFR VYLTGGFKKP 
121:	RELTWVVGVM LAVTTVTFGV TGYSLPWDQV GYWAVKIVSG VPAAIPVVGD QLVTLMRGSE 
181:	SVGQATLTRF YSLHTFVLPW AIAVLLLLHF LMIRKQGISG PL