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Algal Proteins (0):
Recent article
Algal Proteins
Abstract
We show that GRFT, unlike CV-N, binds the surface of human epithelial and peripheral blood mononuclear cells (PBMC) through an exclusively oligosaccharide-dependent interaction. In contrast to several other antiviral lectins however, GRFT treatment induces only minimal changes in secretion of inflam...
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PMID: 21829638
PDF is available here.
PDF is available here.
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Abstract
We sequenced the 138-mega-base pair genome of V. carteri and compared its approximately 14,500 predicted proteins to those of its unicellular relative Chlamydomonas reinhardtii. Despite fundamental differences in organismal complexity and life history, the two species have similar protein-coding pot...
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PMID: 20616280
PDF is available here.
PDF is available here.
Abstract
Abstract
We report the 214 million base pair (Mbp) genome sequence of the filamentous seaweed Ectocarpus siliculosus (Dillwyn) Lyngbye, a model organism for brown algae, closely related to the kelps (Fig. 1). Genome features such as the presence of an extended set of light-harvesting and pigment biosynthesis...
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PMID: 20520714
PDF is available here.
PDF is available here.
Abstract
We show that AVR3a interacts with and stabilizes host U-box E3 ligase CMPG1, which is required for ICD. In contrast, AVR3a(KI/Y147del), a mutant with a deleted C-terminal tyrosine residue that fails to suppress ICD, cannot interact with or stabilize CMPG1. CMPG1 is stabilized by the inhibitors MG132...
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PMID: 20457921
PDF is available here.
PDF is available here.
Abstract
We show that FOX1 is trafficked to the plasma membrane and is oriented with its multicopper oxidase/ferroxidase domain in the exocytoplasmic space. Our analysis of FTR1 indicates its topology is similar to that of S. cerevisiae Ftr1p, with a potential exocytoplasmic iron channeling motif and two pot...
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PMID: 20348389
PDF is available here.
PDF is available here.
Abstract
We hypothesized that the CMG021C gene product functions as an NiR in C. merolae. To test this hypothesis, we developed a method for targeted gene disruption in C. merolae. In support of our hypothesis, we found that a CMG021G null mutant in comparison with the parental strain showed decreased cell g...
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PMID: 20375110
PDF is available here.
PDF is available here.
Abstract
The close association of the extrinsic PsbO, PsbP and PsbQ proteins with PSII core subunits in oxygen-evolving PSII complexes from a green alga, Chlamydomonas reinhardtii, was examined by cross-linking experiments with a water-soluble carbodiimide, 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC...
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PMID: 20375107
PDF is available here.
PDF is available here.
Abstract
We postulate that the observed release profiles support the previously suggested concept that lectins have the ability to function as protection agents for living marine algae....
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PMID: 20433081
PDF is available here.
PDF is available here.
Plant Cell Online (22)3 2010
Abstract
We show that C. merolae contains about four vacuoles that are distributed equally between the daughter cells by binding to dividing mitochondria. Binding is mediated by VIG1, a 30-kD coiled-coil protein identified by microarray analyses and immunological assays. VIG1 appears on the surface of free v...
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PMID: 20348431
PDF is available here.
PDF is available here.
Abstract
I supercomplexes (PSI-LHCI) of Chlamydomonas reinhardtii was studied. The electron transfer activity was reduced by 39% in isolated PSI-LHCI supercomplexes. The visible circular dichroism (CD) spectra associated with strongly coupled chlorophyll (Chl) dimers were reduced in intensity, indicating tha...
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PMID: 20183922
PDF is available here.
PDF is available here.
Abstract
We used strategy of shotgun proteomics to identify flagella proteins after flagella were released and collected from D. salina. A total of 520 groups of proteins were identified under a stringent filter condition (Xcorr > or =1.9, > or =2.2 and > or =3.75; DeltaCn >/= 0.1). In addition to six kinds...
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PMID: 19437132
PDF is available here.
PDF is available here.
Abstract
Although glucose-6-phosphate isomerase (GPI) plays an important role in glycolysis of both the prokaryotes and eukaryotes, studies on the GPI have not been involved in the halotolerant, unicellular green alga Dunaliella salina (D. salina). In this study, a 2,338 bp of full-length cDNA cloned using r...
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PMID: 19688275
PDF is available here.
PDF is available here.
Abstract
The Chlamydomonas reinhardtii genomic DNA database contains a predicted open reading frame (ORF-P) without an apparent stop-codon and unknown coding sequence, located in close proximity and immediately upstream of the TLA1 gene (GenBank Accession No. AF534570). The latter was implicated in the regul...
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PMID: 20012986
PDF is available here.
PDF is available here.
Abstract
We show that the expression of the rb38, rb47 and rb60 genes, as well as the nuclear-encoded psbO gene that directs the synthesis of OEE1 (oxygen evolving enhancer 1), is differentially regulated by red light. Further elucidation of the signal transduction pathway shows that calmodulin is an importa...
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PMID: 20061301
PDF is available here.
PDF is available here.
Journal of Cell Biology (187)7 2009
Abstract
We purified a BBSome-like complex from Chlamydomonas reinhardtii flagella and found that it contains at least BBS1, -4, -5, -7, and -8 and undergoes intraflagellar transport (IFT) in association with a subset of IFT particles. C. reinhardtii insertional mutants defective in BBS1, -4, and -7 assemble...
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PMID: 20038682
PDF is available here.
PDF is available here.
FEBS Letters (583)22 2009
Abstract
We present here the first resonance Raman spectra of channelrhodopsin-2. Spectra of detergent solubilized and lipid-reconstituted protein were recorded under pre-resonant conditions to exclusively probe retinal in its electronic ground state. All-trans retinal was identified to be the favoured confi...
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PMID: 19854176
PDF is available here.
PDF is available here.
Phytopathology (99)10 2009
Abstract
We show that potato lines that are defined to carry R4 do not necessarily recognize the same P. infestans strains. Field isolates appeared to be avirulent on either the R4 differential developed by Mastenbroek or the one developed by Black but not on both. Previously, we identified the avirulence ge...
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PMID: 19740028
PDF is available here.
PDF is available here.
Abstract
We report the first kinetic pathway data for A3+ binding to an algal metallothionein, F. vesiculosus metallothionein (rfMT). The time and temperature dependence of the relative concentrations of apo-rfMT and the five As-containing species have been determined following mixing of As3+ and apo-rfMT us...
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PMID: 19655782
PDF is available here.
PDF is available here.
Abstract
A 2107 bp cDNA (GenBank Accession No. FJ752528) sequence was cloned with 1731 bp open reading frame, encoding a putative LCYE, from C. protothecoides CS-41. Homology studies showed that the deduced amino acid sequence of LCYE gene had a significant similarity with the corresponding sequences of othe...
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PMID: 20030056
PDF is available here.
PDF is available here.
Hereditas (Beijing) (31)8 2009
Abstract
Sixteen cDNA fragments of Phaeodactylum tricornutum were isolated and identified to be up-regulated under nitrogen starvation by suppression subtractive hybridization (SSH) technology in order to elucidate the molecular mechanism of the diatom nitrogen utilization. Seven of them have high similarity...
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PMID: 19689950
PDF is available here.
PDF is available here.
Plant Cell Online (21)8 2009
Abstract
I (PSI) in Chlamydomonas reinhardtii. Here, a tandem affinity purification tagged Ycf4 was used to purify a stable Ycf4-containing complex of >1500 kD. This complex also contained the opsin-related COP2 and the PSI subunits PsaA, PsaB, PsaC, PsaD, PsaE, and PsaF, as identified by mass spectrometry (...
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PMID: 19700633
PDF is available here.
PDF is available here.
EMBO Reports (10)6 2009
Abstract
We show that the PtCPF1 protein from the marine diatom Phaeodactylum tricornutum shows 6-4 photoproduct repair activity and can act as a transcriptional repressor of the circadian clock in a heterologous mammalian cell system. Conversely, it seems to have a wide role in blue-light-regulated gene exp...
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PMID: 19424294
PDF is available here.
PDF is available here.
Abstract
We hypothesized that caffeine exposure is associated with coral bleaching. Here we report the effects of caffeine on four species of coral algae endosymbionts belonging to three widely distributed clades: Clade A Symbiodinium microadriaticum (A), Clade B Symbiodinium sp. from Aiptasia pallida (B6),...
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PMID: 19368218
PDF is available here.
PDF is available here.
Abstract
We describe the osmotic response process of Dunaliella under salinity stress, including the changes of cell volume, intracellular ions concentration, intracellular glycerol concentration, and the expression of some salt-induced genes. Some specific proteins and enzymes can be induced by different sa...
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PMID: 19202552
PDF is available here.
PDF is available here.
Abstract
We performed structure-function analyses of both AVR3a forms. We utilized saturated high-throughput mutant screens to identify amino acids important for R3a activation. Of 6,500 AVR3a(EM) clones tested, we identified 136 AVR3a(EM) mutant clones that gained the ability to induce R3a hypersensitivity....
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PMID: 19245321
PDF is available here.
PDF is available here.
Abstract
Internal fragments of alpha- and beta-tubulin genes were generated using reverse transcription polymerase chain reaction (RT-PCR), and the termini were isolated using 5'- and 3'-rapid amplification of cDNA ends. Phytophthora capsici alpha- and beta-tubulin specific primers were then used to generate...
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PMID: 19099300
PDF is available here.
PDF is available here.
Current Genetics (55)1 2009
Abstract
Most flagellate green algae exhibiting phototaxis posses a singular specialized light sensitive organelle, the eyespot apparatus (EA). Its design principles are similar in all green algae and produce, in conjunction with the movement pattern of the cell, a highly directional optical device. It enabl...
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PMID: 19107486
PDF is available here.
PDF is available here.
Biochemical Journal (418)1 2009
Abstract
We investigated the ability of cryptogein, a proteinaceous elicitor of tobacco defence reactions, to induce different nuclear protein kinase activities. We found that at least four nuclear protein kinases are activated in response to cryptogein treatment in a time-dependent manner, some of them exhi...
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PMID: 18925873
PDF is available here.
PDF is available here.
Abstract
An enzyme with sarcosine dimethylglycine methyltransferase (SDMT) activity has been identified in the thermophilic eukaryote, Galdieria sulphuraria. The crystal structure of the enzyme, solved to a resolution of 1.95 A, revealed a fold highly similar to that of mycolic acid synthases. The kcat and a...
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PMID: 18623062
PDF is available here.
PDF is available here.
Abstract
We annotated genes encoding isozymes of the reductive and oxidative pentose phosphate pathways in the genomes of the centric diatom Thalassiosira pseudonana and the pennate diatom Phaeodactylum tricornutum and bioinformatically inferred their intracellular distribution. Prediction results were confi...
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PMID: 19206144
PDF is available here.
PDF is available here.
Aquatic Toxicology (91)1 2009
Abstract
Phytochelatins, with the general structure of (gamma-Glu-Cys)n-Gly (n=2-11), are usually recognized as being strongly induced by metals in microalgae and play an important role in the detoxification of heavy metals in environment. However, there have been few studies on metallothionein (MT) synthesi...
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PMID: 19019465
PDF is available here.
PDF is available here.
Abstract
Previous studies have demonstrated that 14-3-3 proteins exist in all the eukaryotic organisms studied; however, studies on the 14-3-3 proteins have not been involved in the halotolerant, unicellular green alga Dunaliella salina so far. In the present study, a cDNA encoding 14-3-3 protein of D. salin...
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PMID: 17972165
PDF is available here.
PDF is available here.
Abstract
Species of the genus Phytophthora are arguably the most destructive plant pathogens causing widespread damage to many horticultural and ornamental species, and to native ecosystems throughout the world. Globalization has increased the volume of plants being transported over long distances and has in...
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PMID: 19624253
PDF is available here.
PDF is available here.
Abstract
The effects of growth regulator of the new generation-melamine salt of bis(oxymethyl)phosphine acid (melafen)--on culture growth, pigment and protein content, and the induction of protective chloroplastic chaperone HSP70B in Chlamydomonas reinhardtii CW15 cells were studied. Melafen exhibited 10-30%...
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PMID: 19845296
PDF is available here.
PDF is available here.
Abstract
Within the Chlorophyta, EF-1alpha is shown to be present in three ulvophycean orders (i.e., Dasycladales, Bryopsidales, Siphonocladales) and the genus Ignatius. Models describing gene gain-loss dynamics revealed that the presence of EF-1alpha, EFL or both genes along the backbone of the green plant...
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PMID: 19216746
PDF is available here.
PDF is available here.
BMC Plant Biology (9)1 2009
Abstract
A single-copy gene is found in the six chlorophyte green algae, which is most closely related to the CslA and CslC families that are present in the seven land plants investigated in our analyses. Six proteins from poplar, grape and sorghum form a distinct family (CslJ), providing further support for...
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PMID: 19646250
PDF is available here.
PDF is available here.
BMC Microbiology (9) 2009
Abstract
Two novel constitutively expressed members of the glycosyl hydrolase (GH18) gene family of chitinases were isolated from the A. astaci strain Gb04. The primary amino acid sequence of these chitinase genes, termed CHI2 and CHI3, is composed of an N-terminal signal peptide directing the post-translati...
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PMID: 19719847
PDF is available here.
PDF is available here.
Abstract
Assembly and asymmetric localization of the photosensory eyespot in the biflagellate, unicellular green alga Chlamydomonas reinhardtii requires coordinated organization of photoreceptors in the plasma membrane and pigment granule/thylakoid membrane layers in the chloroplast. min1 (mini-eyed) mutant...
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PMID: 18849467
PDF is available here.
PDF is available here.
Abstract
We analyzed the expression of several genes known to be involved in these pathways and selected one that was specifically expressed in sporangia and zoospores but not in mycelium. This gene, named PsGPA1, is a single-copy gene in P. sojae and encodes a G-protein alpha subunit that shares 96% identit...
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PMID: 18931042
PDF is available here.
PDF is available here.
Abstract
The fast growing unicellular green microalgae Chlorella protothecoides has attracted interest as a promising organism for commercial production of a high-value carotenoid, lutein, by heterotrophic fermentation. Effects of two oxidant-forming reactive oxygen species (ROS) on the biomass concentration...
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PMID: 19093082
PDF is available here.
PDF is available here.
Abstract
Our results also revealed that the species composition of Chlorophyta showed a close relationship with latitude, changing from Prasinophyceae at the high latitude to Trebouxiophyceae at the low latitude. Several newly classified picoplankton lineages were first uncovered in the South China Sea, incl...
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PMID: 19093087
PDF is available here.
PDF is available here.
Abstract
We report on the characterization of three P. yezoensis genes, a nitrate transporter (PyNRT2) and two urea transporters (PyUT1 and PyUT2), which may be involved in reversing iroochi. The predicted length of the PyNRT2 protein was 479 amino acids (AA), while PyUT1 and PyUT2 were 740 and 680 AA, respe...
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PMID: 18202829
PDF is available here.
PDF is available here.
Plant Physiology (148)4 2008
Abstract
We report on the molecular and biochemical characterization of CDJ1, one of three zinc-finger-containing J-domain proteins encoded by the Chlamydomonas reinhardtii genome. Fractionation experiments indicate that CDJ1 is a plastidic protein. In the chloroplast, CDJ1 was localized to the soluble strom...
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PMID: 18931144
PDF is available here.
PDF is available here.
Plant and Cell Physiology (49)12 2008
Abstract
Synchronized cultures of the green alga Scenedesmus quadricauda were grown in the absence (untreated cultures) or in the presence (FdUrd-treated cultures) of 5-fluorodeoxyuridine, the specific inhibitor of nuclear DNA replication. The attainment of commitment points, at which the cells become commit...
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PMID: 18977763
PDF is available here.
PDF is available here.
Abstract
We sequenced the plastid genome and confirmed that it lacks the full complement of genes required for photosynthesis. In support of the second scenario, we demonstrated that a nuclear gene of oxygenic photosynthesis, psbO, is expressed in the sea slug and has integrated into the germline. The source...
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PMID: 19004808
PDF is available here.
PDF is available here.
FEBS Letters (582)27 2008
Abstract
We show that TPPP gene(s) are conserved in the genomes of ciliated organisms, but are lacking from the nonciliated ones. This recognition is based upon homologous gene sequence analysis, in silico comparative genomic studies, bioinformatic search and experimental evidence. Cilia (flagella) are micro...
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PMID: 18930059
PDF is available here.
PDF is available here.
Abstract
We analyzed 107 novel partial algal actin sequences and report some unexpected results. First, monophyletic actin gene families in multiple, phylogenetically distantly related algal taxa contain two distinct clades of sequences. One of these clades contains highly conserved sequences, whereas the se...
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PMID: 19008527
PDF is available here.
PDF is available here.
Journal of Biological Chemistry (283)45 2008
Abstract
We have previously proposed that Euglena gracilis possesses a pathway for the production of ascorbate (AsA) through d-galacturonate/L-galactonate as representative intermediates ( Shigeoka, S., Nakano, Y., and Kitaoka, S. (1979) J. Nutr. Sci. Vitaminol. 25, 299-307 ). However, genetic evidence provi...
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PMID: 18782759
PDF is available here.
PDF is available here.
Abstract
Photobiological hydrogen production using microalgae is being developed into a promising clean fuel stream for the future. In this study, microarray analyses were used to obtain global expression profiles of mRNA abundance in the green alga Chlamydomonas reinhardtii at different time points before t...
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PMID: 18708561
PDF is available here.
PDF is available here.
Current Microbiology (57)5 2008
Abstract
These results indicate that the lactococcal system can be used for the overproduction and convenient detection of eukaryotic membrane proteins....
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PMID: 18769854
PDF is available here.
PDF is available here.
Abstract
We isolated P. infestans avirulence gene PiAvr4 using a combined approach of genetic mapping, transcriptional profiling, and bacterial artificial chromosome marker landing. PiAvr4 encodes a 287-amino-acid-protein that belongs to a superfamily of effectors sharing the putative host-cell-targeting mot...
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PMID: 18842095
PDF is available here.
PDF is available here.
Trends in Microbiology (16)11 2008
Abstract
We describe recent progress in characterizing RXLR-EER effectors and discuss why so many of these rapidly evolving proteins are encoded by the genomes of plant pathogenic oomycetes....
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PMID: 18819803
PDF is available here.
PDF is available here.
Plant and Cell Physiology (49)12 2008
Abstract
The synchronized cultures of the green alga Scenedesmus quadricauda were grown in the absence (untreated cultures) or in the presence (FdUrd-treated cultures) of 5-fluorodeoxyuridine, the specific inhibitor of nuclear DNA replication. The attainment of commitment points, at which the cells become com...
PDF is available here.
PDF is available here.
Abstract
This paper deals with the first characterization of the structure of the photoreceptive organelle of the unicellular alga Euglena gracilis (Euglenophyta). This organelle has a three-dimensional organization consisting of up to 50 closely stacked membrane lamellae. Ionically induced unstacking of the...
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PMID: 18722349
PDF is available here.
PDF is available here.
Abstract
The target of rapamycin (TOR) is a conserved Ser/Thr kinase that controls cell growth by activating an array of anabolic processes including protein synthesis, transcription and ribosome biogenesis, and by inhibiting catabolic processes such as mRNA degradation and autophagy. Control of autophagy by...
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PMID: 18670193
PDF is available here.
PDF is available here.
FEBS Letters (582)21-22 2008
Abstract
We found that cpSRP54 of higher plants lacks the ability to bind SRP-RNA because of two amino acid substitutions within a region corresponding to the RNA binding domain of cytosolic SRP54, whereas the C-terminal extension does not affect RNA binding. Phylogenetic analysis revealed that these mutatio...
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PMID: 18755190
PDF is available here.
PDF is available here.
Abstract
We report here the cloning of MCA1, the first pentatricopeptide repeat protein functionally identified in this organism. By chloroplast transformation with modified petA genes, we investigated the function of MCA1 in vivo. We demonstrate that MCA1 acts on the very first 21 nucleotides of the petA 5'...
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PMID: 18573878
PDF is available here.
PDF is available here.
Journal of Biological Chemistry (283)36 2008
Abstract
We characterized the Ca2+ dependence of mGluR7a signaling in Xenopus oocytes by using channelrhodopsin-2 (ChR2), a Ca2+-permeable, light-activated ion channel for triggering Ca2+ influx, and a GIRK3.1/3.2 concatemer to monitor mGluR7a responses. Application of the agonist (S)-2-amino-4-phosphonobuta...
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PMID: 18599484
PDF is available here.
PDF is available here.
Journal of Biological Chemistry (283)36 2008
Abstract
We recently characterized a novel heme biogenesis pathway required for heme c(i)' covalent binding to cytochrome b6 in Chlamydomonas named system IV or CCB (cofactor assembly, complex C (b6f), subunit B (PetB)). To find out whether this CCB pathway also operates in higher plants and extend the knowl...
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PMID: 18593701
PDF is available here.
PDF is available here.