ArticlePloS one2015
Crystal Structure of Allophycocyanin from Marine Cyanobacterium Phormidium sp. A09DM.
Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 37 citations in OpenAlex.
- Structural comparison of allophycocyanin variants reveals the molecular basis for their spectral differences.Photosynthesis research · 2024Article
- Structure of the antenna complex expressed during far-red light photoacclimation in Synechococcus sp. PCC 7335.The Journal of biological chemistry · 2024Article
- Structural and photophysical characterization of the small ultra-red fluorescent protein.Nature communications · 2023Article
- Helical allophycocyanin nanotubes absorb far-red light in a thermophilic cyanobacterium.Science advances · 2023Article
- Exploring the structural aspects and therapeutic perspectives of cyanobacterial phycobiliproteins.3 Biotech · 2022Review
- Cyanobacterial pigment protein allophycocyanin exhibits longevity and reduces Aβ-mediated paralysis in3 Biotech · 2020Article
- An inkjet-printed polysaccharide matrix for on-chip sample preparation in point-of-care cell counting chambers.RSC advances · 2020Article
- De novo synthetic biliprotein design, assembly and excitation energy transfer.Journal of the Royal Society, Interface · 2018Article
- Picosecond excitation energy transfer of allophycocyanin studied in solution and in crystals.Photosynthesis research · 2018Article
- Coupled rows of PBS cores and PSII dimers in cyanobacteria: symmetry and structure.Photosynthesis research · 2017Article
- Bacterial Phytochromes, Cyanobacteriochromes and Allophycocyanins as a Source of Near-Infrared Fluorescent Probes.International journal of molecular sciences · 2017Review
- Structural modeling of the phycobilisome core and its association with the photosystems.Photosynthesis research · 2016Article
- Crystal structure analysis of C-phycoerythrin from marine cyanobacterium Phormidium sp. A09DM.Photosynthesis research · 2016Article
- Recent advances in production, purification and applications of phycobiliproteins.World journal of biological chemistry · 2016Review
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Isolated phycobilisome (PBS) sub-assemblies have been widely subjected to X-ray crystallography analysis to obtain greater insights into the structure-function relationship of this light harvesting complex. Allophycocyanin (APC) is the phycobiliprotein always found in the PBS core complex. Phycocyanobilin (PCB) chromophores, covalently bound to conserved Cys residues of α- and β- subunits of APC, are responsible for solar energy absorption from phycocyanin and for transfer to photosynthetic apparatus. In the known APC structures, heterodimers of α- and β- subunits (known as αβ monomers) assemble as trimer or hexamer. We here for the first time report the crystal structure of APC isolated from a marine cyanobacterium (Phormidium sp. A09DM). The crystal structure has been refined against all the observed data to the resolution of 2.51 Å to Rwork (Rfree) of 0.158 (0.229) with good stereochemistry of the atomic model. The Phormidium protein exists as a trimer of αβ monomers in solution and in crystal lattice. The overall tertiary structures of α- and β- subunits, and trimeric quaternary fold of the Phormidium protein resemble the other known APC structures. Also, configuration and conformation of the two covalently bound PCB chromophores in the marine APC are same as those observed in fresh water cyanobacteria and marine red algae. More hydrophobic residues, however, constitute the environment of the chromophore bound to α-subunit of the Phormidium protein, owing mainly to amino acid substitutions in the marine protein.
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