PCC7120 strain Model strain


  • Prokarya
    • Cyanobacteria
      • Nostocales
        • Anabaena (Nostoc)
          • sp.

Strain information

Phycobiliprotein types: PC+PEC

Habitat: freshwater

Remark: Strain in which CpcS-III (Zhao et al 2006), PecE/F (Jung et al. 1995, Blot et al. 2009) and CpcT (Zhao et al. 2007, Zhang et al. 2012) have been characterized

Genome sequence

Refseq record: NC_003272

Genome status: complete

Sequencing center: Kazusa


  • Blot et al., 2009. Phycourobilin in Trichromatic Phycocyanin from Oceanic Cyanobacteria Is Formed Post-translationally by a Phycoerythrobilin Lyase-Isomerase J Biol Chem, 284, 9290-9298.
  • Jung et al., 1995. Candidate genes for the phycoerythrocyanin alpha subunit lyase. Biochemical analysis of pecE and pecF interposon mutants J Biol Chem, 270, 12877-12884.
  • Zhang et al., 2012. Identification of amino acid residues essential to the activity of lyase CpcT1 from Nostoc sp. PCC7120 Gene, In press.
  • Zhao et al., 2006. Chromophore attachment to phycobiliprotein beta-subunits: phycocyanobilin:cysteine-beta84 phycobiliprotein lyase activity of CpeS-like protein from Anabaena sp. PCC7120 J Biol Chem, 281, 8573-8581.
  • Zhao et al., 2007b. Lyase activities of CpcS- and CpcT-like proteins from Nostoc PCC7120 and sequential reconstitution of binding sites of phycoerythrocyanin and phycocyanin beta-subunits J Biol Chem, 282, 34093-34103.

Gene Locus tag Genbank Remark Length Last change
CpcS-III subfamily alr0617 NP_484661.1 188 09-26-2011
CpcT family all5339 NP_489379.1 Crystal structures of CpcT from Nostoc sp. PCC7120 and its complex with PCB were determined at 1.95 and 2.50 Å resolution, respectively (Zhou et al. 2014). 199 10-23-2014
CpcV family All5292 NP_489332.1 180 09-26-2011
PecE family alr0526 NP_484570.1 253 09-26-2011
PecF family alr0527 NP_484571.1 173 09-26-2011
IaiH family alr4537 NP_488577.1 252 10-26-2011
CotB homologs 2 family alr0616 NP_484660.1 226 09-26-2011
CpcE-I subfamily alr0532 NP_484576.1 276 12-06-2011
CpcF-I subfamily alr0533 NP_484577.1 200 12-06-2011
T homologs family alr0647 NP_484691.1 198 09-26-2011
NblB family alr3814 NP_487854.1 Blastp 220 09-26-2011
L8106_16949 homologs family all0605 NP_484649.1 398 12-05-2011
MC7420_3535 homologs family alr1903 NP_485943.1 1547 12-05-2011
MC7420_3535 homologs family all3465 NP_487505.1 1119 12-06-2011
L8106_22089 homologs family all3549+all3550 NP_487589.1 frameshift (or sequencing error) in all3550 389 01-10-2012
MC7420_3535 homologs family all3892 NP_487932.1 874 12-06-2011
MC7420_3535 homologs family alr2986 NP_487026.1 885 12-07-2011

Model strain Model strains, Marine strains

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