ライフサイエンスコーパス: phycobilisome

1 uctures of the light-harvesting complex, the phycobilisome.

2 CP1) and lower fluorescence quenching of the phycobilisome.

3 proximately wild-type levels of PS1, PS2 and phycobilisomes.

4 o form the midantenna rods of cyanobacterial phycobilisomes.

5 e (3-5-MDa), light-harvesting complexes, the phycobilisomes.

6 the extremophilic C. caldarium with immobile phycobilisomes.

7 te excess energy as heat by interacting with phycobilisomes.

8 e site of the light-harvesting antennae, the phycobilisomes.

9 ecursor of biliprotein chromophores found in phycobilisomes.

10 hotosynthetic light-harvesting antennae, the phycobilisomes.

11 a number of conditions, was not detected in phycobilisomes.

12 sociated degradation of the light-harvesting phycobilisomes.

13 are assembled with linker proteins into the phycobilisome, a large complex that resides on the surfa

14 The phycobilisome, a light-harvesting structure of cyanobact

15 rategy which compensates for the lowering of phycobilisome and PSI levels in response to iron deficie

16 dvantages of large fluorescent dyes, such as phycobilisome and quantum dots, can be better exploited

17 crease energy transfer efficiency within the phycobilisome and to prevent photoinhibition.

18 g of the OCP photocycle and interaction with phycobilisomes and the fluorescence recovery protein, th

19 m II contact zones provide sites for docking phycobilisomes and the formation of megacomplexes.

20 as been revealed about the mobility of their phycobilisomes and the regulation of their light-harvest

21 degrade their light-harvesting complex, the phycobilisome, and dramatically reduce the rate of photo

22 photosynthetic light harvesting complex, the phycobilisome, and to each of its constituent phycobilip

23 phycobilisomes was lower than for wild-type phycobilisomes, and the absorption cross-section of the

24 d only in mesophilic P. cruentum with mobile phycobilisomes, and they were absent in the extremophili

25 a fully functional megacomplex composed of a phycobilisome antenna complex and photosystems I and II

26 harvest light using large membrane-extrinsic phycobilisome antenna in addition to membrane-bound chlo

27 We show that as the phycobilisome antenna is diminished, large-scale changes

28 Z were not able to increase light-harvesting phycobilisome antenna like CS upon high-CO2 treatment.

29 ies of mutants with altered light-harvesting phycobilisome antenna systems for changes in thylakoid m

30 ies of mutants with altered light-harvesting phycobilisome antenna systems for changes in thylakoid m

31 ular costs between chlorophyll a(2)/b(2) and phycobilisome antennas in extant Prochlorococcus and Syn

32 In the cyanobacteria, phycobilisomes are assembled from (alphabeta)(6) hexamer

33 Possible roles of CotB in the biogenesis of phycobilisomes are discussed.

34 Phycobilisomes are highly organized pigment-protein ante

35 ughout the cell, suggesting that fluorescing phycobilisomes are more prevalent along the outer thylak

36 rresponding location of the light-harvesting phycobilisomes are not known in detail, and such informa

37 es PCC 6803 and a series of mutants in which phycobilisomes are progressively truncated.

38 bunits of photosystem I, photosystem II, and phycobilisomes are replaced by proteins encoded in a 21-

39 Furthermore, intact phycobilisomes are required for stable expression of the

40 bacterial light harvesting structures called phycobilisomes are restructured in response to ambient l

41 tisubunit macromolecular structures known as phycobilisomes as antenna to enhance light harvesting fo

42 rine lineages with divinyl chlorophyll b and phycobilisomes as photosynthetic antennae.

43 tal's unique packing leads to a proposal for phycobilisome assembly in vivo and for a more prominent

44 rolled by the interaction equilibria between phycobilisome assembly partners, processing enzymes and

45 Early steps in the phycobilisome assembly pathway include the folding of bi

46 ggest a model for the earliest events in the phycobilisome assembly pathway.

47 To date, rhythm of phycobilisome associated (rpaA) is the only gene other t

48 cted with the activity of RpaA (regulator of phycobilisome associated A), the master regulator of cir

49 The response regulator RpaB (regulator of phycobilisome associated B), part of an essential two-co

50 dence that phosphorylated RpaA (regulator of phycobilisome associated) represses an RpaA-independent

51 ranscriptional regulator, RpaA (regulator of phycobilisome-associated A).

52 transcriptional regulator RpaA (regulator of phycobilisome-associated A).

53 ause specific and reproducible variations in phycobilisome-associated phycocyanin that do not correla

54 ional rhythms in the wild-type, regulator of phycobilisome association A (RpaA), cannot be cultured u

55 which we have designated RpaC (regulator of phycobilisome association C).

56 n recycling and a coupling between decreased phycobilisome biosynthesis and increased phycobilisome d

57 reduced PBP levels, and impaired assembly of phycobilisomes, but a cpcV mutant had no discernable phe

58 rm in OCP(r), enabling strong OCP binding to phycobilisomes, but is not essential for photoactivation

59 The FRP acts to dissociate the OCP from the phycobilisomes by accelerating the conversion of the act

60 n addition, it slows the OCP detachment from phycobilisomes by hindering fluorescence recovery protei

61 ransfer between the soluble light harvesting phycobilisome complex and membrane-bound photosystems wa

62 ii strain identified (i) reduced EET between phycobilisome components, (ii) shorter fluorescence life

63 antenna were greatly down-regulated and the phycobilisome composition was altered.

64 marine Synechococcus lineages from a common phycobilisome-containing ancestor.

65 ents of this operon were highly conserved in phycobilisome-containing cyanobacteria that have been se

66 Photosynthetic membranes from the phycobilisome-containing red alga Porphyridium cruentum

67 ce approximately 85% of the normal amount of phycobilisome cores containing allophycocyanin and other

68 any species, such as nblA and chlL, encoding phycobilisome degradation and chlorophyll biosynthesis p

69 Phycobilisome degradation is induced by expression of th

70 utive part of the machinery that coordinates phycobilisome degradation with environmental conditions.

71 Apart from regulation of phycobilisome degradation, NblR modulates additional fun

72 mutant of Synechocystis sp. PCC6803 induced phycobilisome degradation, suggesting that the function

73 sed phycobilisome biosynthesis and increased phycobilisome degradation.

74 803, both of whose products are required for phycobilisome degradation.

75 Based on phycobilisome densities per membrane area of 390 per m2

76 nobacterial mutant that does not degrade its phycobilisomes during either sulfur or nitrogen limitati

77 nutrient-replete growth, (ii) do not degrade phycobilisomes during sulfur, nitrogen, or phosphorus li

78 efore, we carried out a detailed analysis of phycobilisome dynamics in several red alga strains and c

79 ss = 588 Da) was tentatively detected in the phycobilisome fraction purified from the mutants.

80 ATP synthetase and phycobilisome genes were down-regulated in LoFe, and the

81 o NblB, which is required for degradation of phycobilisomes in other cyanobacteria.

82 Photodamage to phycobilisomes in vitro and in living cells is amplified

83 ble to degrade its light-harvesting complex (phycobilisome), in response to nutrient deprivation.

84 osition of its light-harvesting antennae, or phycobilisomes, in response to changes in the sulfur lev

85 branes but still a relatively high amount of phycobilisomes, inactive photosystem II and active photo

86 The precise architecture of the phycobilisome is determined by the various colourless li

87 cription of genes encoding components of the phycobilisome is differentially regulated during this pr

88 pigment organization and energy transfer in phycobilisomes is essential to understanding photosynthe

89 Phycobilisomes isolated from mutant strains FdR1E1 and F

90 mitation, (iii) cannot properly modulate the phycobilisome level during exposure to high light, and (

91 t on changes in the aggregation state of the phycobilisome light-harvesting antenna components.

92 Since phycobilisomes make up approximately 50% of the total pr

93 cobiliproteins into larger aggregates called phycobilisomes, members of the cryptophytes use a single

94 In contrast, there was almost no phycobilisome mobility in the thermophilic red alga Cyan

95 Our data conclusively prove phycobilisome mobility in two model mesophilic red alga

96 Variations in phycobilisome mobility reflect the different ways in whi

97 The phycobilisome molecular architecture is defined, and cry

98 otosystem interaction that highly restricted phycobilisome movement.

99 ermal energy dissipation at the level of the phycobilisome (PB), the extramembranous light-harvesting

100 sensor of light intensity and an effector of phycobilisome (PB)-associated photoprotection in cyanoba

101 ucleotide phosphate (NADPH) is greatest, the phycobilisome (PBS) antenna associates with PSII, increa

102 The phycobilisome (PBS) is an extremely large light-harvesti

103 progressive increase in the coupling of the phycobilisome (PBS) to the PSII reaction center as deter

104 The activated OCP(r) interacts with the phycobilisome (PBS), the cyanobacterial antenna, and ind

105 ation energy dissipation at the level of the phycobilisome (PBS), the cyanobacterial antenna, induced

106 cess energy absorbed by the light-harvesting phycobilisomes (PBS) in cyanobacteria.

107 orbed energy as heat in the light-harvesting phycobilisomes (PBs) to protect the photosynthetic syste

108 dentify how the activated OCP interacts with phycobilisomes (PBs), several OCP mutants were construct

109 ata attributed this immobility to the strong phycobilisome-photosystem interaction that highly restri

110 , while decreased transcription of genes for phycobilisome, photosystems I and II, cytochrome b6/f, a

111 coccus and the majority of cyanobacteria use phycobilisomes, Prochlorococcus has evolved to use a chl

112 ase the accumulation of two forms of a major phycobilisome protein called phycocyanin and initiate th

113 Partitioning of phycobilisome proteins between degradation and assembly

114 All strains downregulated phycobilisome proteins with increasing irradiance.

115 I2D2, cpeBA and cpeCDE operons, which encode phycobilisome proteins.

116 bition and chlorophyll levels decreased upon phycobilisome reduction, although greater penetration of

117 l redox conditions, whereas transcription of phycobilisome-related genes and PSI genes was decreased.

118 nses, with low sulfate levels activating the phycobilisome remodeling response and low sulfur levels

119 The phycobilisome remodeling response results from changes i

120 V, regulation of dimerization, downsizing of phycobilisomes rods and regulation of zeaxanthin abundan

121 presented by a membrane-bound antenna and by phycobilisomes situated on thylakoid membrane surfaces.

122 changes coincide with a loss of the ordered phycobilisome structure, evident from small-angle neutro

123 ted state the organized rod structure of the phycobilisome supports directional EET to reaction cente

124 Cells of the nblR mutant (i) have more phycobilisomes than wild-type cells during nutrient-repl

125 tosynthetic light harvesting antennae called phycobilisomes that occur during complementary chromatic

126 ermal energy dissipation at the level of the phycobilisome, the extramembranous antenna.

127 rotenoid protein (OCP(r)) is able to bind to phycobilisomes, the cyanobacterial antenna, and to quenc

128 hotosynthesis and are found in water-soluble phycobilisomes, the light-harvesting complexes of cyanob

129 tic complexes, photosystem (PS) I, PS II and phycobilisomes, to harvest and convert sunlight into che

130 ation provides a basis for understanding how phycobilisomes transfer excitation energy to reaction ce

131 , the efficiency of energy transfer by these phycobilisomes was lower than for wild-type phycobilisom

132 Although functional phycobilisomes were assembled in this strain, the overal

133 hocystis sp. PCC 6803 harvests light via the phycobilisome, which consists of an allophycocyanin core

134 d express nblA, a gene involved in degrading phycobilisomes, which are complexes of pigmented protein

135 Cyanobacteria produce phycobilisomes, which are macromolecular light-harvestin

136 d concomitantly regulates the association of phycobilisomes with PSII.

137 cocyanin than wild type and produces smaller phycobilisomes with red-shifted absorbance and fluoresce

138 nd no evidence of functional coupling of the phycobilisomes with the PSI-LHCI supercomplex purified f