Photosynthetic Apparatus of Antenna-reaction Centres Supercomplexes in Oxyphotobacteria: Insight through Significance of Pcb/IsiA Proteins

Chen, Min; Bibby, Thomas S.

doi:10.1007/s11120-005-1330-9

Cited by 46 publications

(34 citation statements)

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“…Two major accessory light-harvesting and protection systems exist in cyanobacteria, PBPs (reviewed in ref. 37), and accessory chlorophyll-binding proteins (CBPs) (38)(39)(40). Like other ''alternative Chl'' cyanobacteria, A. marina does not construct the supramolecular PBP assemblies, the PBSs.…”

Section: Resultsmentioning

confidence: 99%

Niche adaptation and genome expansion in the chlorophyll d -producing cyanobacterium Acaryochloris marina

Swingley

Chen

Cheung³

et al. 2008

Proc. Natl. Acad. Sci. U.S.A.

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Acaryochloris marina is a unique cyanobacterium that is able to produce chlorophyll d as its primary photosynthetic pigment and thus efficiently use far-red light for photosynthesis. Acaryochloris species have been isolated from marine environments in association with other oxygenic phototrophs, which may have driven the niche-filling introduction of chlorophyll d. To investigate these unique adaptations, we have sequenced the complete genome of A. marina. The DNA content of A. marina is composed of 8.3 million base pairs, which is among the largest bacterial genomes sequenced thus far. This large array of genomic data is distributed into nine single-copy plasmids that code for >25% of the putative ORFs. Heavy duplication of genes related to DNA repair and recombination (primarily recA) and transposable elements could account for genetic mobility and genome expansion. We discuss points of interest for the biosynthesis of the unusual pigments chlorophyll d and ␣-carotene and genes responsible for previously studied phycobilin aggregates. Our analysis also reveals that A. marina carries a unique complement of genes for these phycobiliproteins in relation to those coding for antenna proteins related to those in Prochlorococcus species. The global replacement of major photosynthetic pigments appears to have incurred only minimal specializations in reaction center proteins to accommodate these alternate pigments. These features clearly show that the genus Acaryochloris is a fitting candidate for understanding genome expansion, gene acquisition, ecological adaptation, and photosystem modification in the cyanobacteria.comparative microbial genomics ͉ photosynthesis ͉ oxygenic phototrophs ͉ evolution

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Section: Resultsmentioning

confidence: 99%

Niche adaptation and genome expansion in the chlorophyll d -producing cyanobacterium Acaryochloris marina

Swingley

Chen

Cheung³

et al. 2008

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

201

184

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“…The group of CBPI and CBPII based on the published information of supercomplexes (Bibby et al 2003b;Chen et al 2005a, b;Bumba et al 2005) and mass fingerprinting and real-time RT-PCR data of CBPs in Acaryochloris (Chen et al unpublished). The CBPI (original name, cluster of PcbC, Chen et al 2005c;Chen and Bibby 2005) of cyanobacteria possesses the unique features of an extremely short loop between the 5th and 6th helices and an extended C-terminal region compared to other CBP complexes (van der Staay et al 1998). However, the designation of CBPII and CBPIII is not so clear as CBPI.…”

Section: Resultsmentioning

confidence: 99%

“…Examples of core antennas are the CP43 and CP47 complexes of photosystem II (Eaton-Rye and Putnam-Evans 2005). The third form of integral-membrane antenna is the accessory antenna complexes outside of the photosystem cores, such as LHCI and LHCII in plants and algae (Durnford et al 1999;Durnford 2003;Liu et al 2004), LH2 of purple bacteria (Cogdell et al 2006), and prochlorophyte chlorophyll-binding protein complexes (Pcb) along with iron-stress-induced protein A (IsiA) in cyanobacteria (LaRoche et al 1996;Chen and Bibby 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Three prochlorophyte genera have been described: Prochlorococcus, Prochlorothrix, and Prochloron (Lewin 2002). All of them use chlorophyll-binding protein complexes, named Pcb complexes, as their major light-harvesting components (Chen and Bibby 2005;Boichenko et al 2007). …”

Section: Introductionmentioning

confidence: 99%

“…Recently, the availability of complete genomic information of a number of cyanobacteria has revealed that the Pcb-like proteins have a wider distribution than just prochlorophytes and often exhibit a unique arrangement of multiple copies (Garczarek et al 2000;Bibby et al 2003a, b;Bumba et al 2005;Chen and Bibby 2005;Boichenko et al 2007). It is now clear that Pcb-type complexes are not unique light-harvesting components that only exist in prochlorophytes, but are also found in classical cyanobacteria, such as Fischerella, Anabaena (Geiss et al 2001), and also in Acaryochloris (Chen et al 2005c).…”

Section: Introductionmentioning

confidence: 99%

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Nomenclature for membrane-bound light-harvesting complexes of cyanobacteria

2007

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Accessory chlorophyll-binding proteins (CBP) in cyanobacteria have six transmembrane helices and about 11 conserved His residues that might participate in chlorophyll binding. In various species of cyanobacteria, the CBP proteins bind different types of chlorophylls, including chlorophylls a, b, d and divinyl-chlorophyll a, b. The CBP proteins do not belong to the light-harvesting complexes (LHC) superfamily of plant and algae. The proposed new name of CBP for this class of proteins, which is a unique accessory light-harvesting superfamily in cyanobacteria, clarifies the confusion of names of prochlorophytes chlorophyll binding protein (Pcb), PSII-like light-harvesting proteins and iron-stress-induced protein A (IsiA). The CBP complexes are a member of a larger family that includes the chlorophyll a-binding proteins CP43 and CP47 that function as core antennas of photosystem II.

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Prochlorococcusand Other Photosynthetic Picoplankton

Moore

2010

Encyclopedia of Life Sciences

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The smallest yet most abundant photosynthetic organism on earth is the marine cyanobacterium, Prochlorococcus , which represent a key component in marine ecology and global biogeochemical cycles. This tiny cell is extremely successful, dominating throughout the surface photic zone of the subtropical and tropical low nutrient, oligotrophic regions of the world's oceans from ∼45 °N to 40 °S. It has evolved to be an oligotrophic specialist, through a reduction in cell size, a streamlined genome and a reduced cellular requirement for the limited resources available in this environment. The ability to examine the abundance and distribution of Prochlorococcus in the wild, and measure its genomic and metabolic properties in the lab and field, has made Prochlorococcus a model system for advancing our understanding of the ecology of marine microbes. Key Concepts: The smallest photosynthetic cells in the oceans (picophytoplankton) dominate numerically and contribute significantly to primary production on a global scale. Prochlorococcus is a cyanobacterium with a reduced cell size and streamlined genome providing it with advantages over other phytoplankton in oligotrophic oceans around the world. The ability to measure genomic and metabolic properties in natural populations and isolates, and the ability to follow population dynamics, makes Prochlorococcus an excellent model system for studying microbial ecology on all scales.

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Photosynthetic Apparatus of Antenna-reaction Centres Supercomplexes in Oxyphotobacteria: Insight through Significance of Pcb/IsiA Proteins

Cited by 46 publications

References 46 publications

Niche adaptation and genome expansion in the chlorophyll d -producing cyanobacterium Acaryochloris marina

Niche adaptation and genome expansion in the chlorophyll d -producing cyanobacterium Acaryochloris marina

Nomenclature for membrane-bound light-harvesting complexes of cyanobacteria

Prochlorococcusand Other Photosynthetic Picoplankton

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