1
|
Shoji S, Mizoguchi T, Tamiaki H. In vitro self-assemblies of bacteriochlorophylls-c from Chlorobaculum tepidum and their supramolecular nanostructures. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2015.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
2
|
Linnanto JM, Korppi-Tommola JEI. Exciton Description of Chlorosome to Baseplate Excitation Energy Transfer in Filamentous Anoxygenic Phototrophs and Green Sulfur Bacteria. J Phys Chem B 2013; 117:11144-61. [DOI: 10.1021/jp4011394] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Juha M. Linnanto
- Department of Chemistry, P.O.
Box 35, University of Jyväskylä, FIN-40014, Finland
- University of Tartu, Institute of Physics, Riia 142,
EE-51014 Tartu, Estonia
| | | |
Collapse
|
3
|
Pandit A, Ocakoglu K, Buda F, van Marle T, Holzwarth AR, de Groot HJM. Structure Determination of a Bio-Inspired Self-Assembled Light-Harvesting Antenna by Solid-State NMR and Molecular Modeling. J Phys Chem B 2013; 117:11292-8. [DOI: 10.1021/jp402210x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Anjali Pandit
- Leiden Institute of Chemistry, Leiden University, 2300 RA, Leiden, The Netherlands
| | - Kasim Ocakoglu
- Max-Planck-Institute for Chemical Energy Conversion (MPI-CEC) (previously
known as Max-Planck-Institute for Bioinorganic Chemistry), Stiftstrasse
34−36, D-45470 Mülheim an der Ruhr, Germany
| | - Francesco Buda
- Leiden Institute of Chemistry, Leiden University, 2300 RA, Leiden, The Netherlands
| | - Thomas van Marle
- Leiden Institute of Chemistry, Leiden University, 2300 RA, Leiden, The Netherlands
| | - Alfred R. Holzwarth
- Max-Planck-Institute for Chemical Energy Conversion (MPI-CEC) (previously
known as Max-Planck-Institute for Bioinorganic Chemistry), Stiftstrasse
34−36, D-45470 Mülheim an der Ruhr, Germany
| | - Huub J. M. de Groot
- Leiden Institute of Chemistry, Leiden University, 2300 RA, Leiden, The Netherlands
| |
Collapse
|
4
|
Shoji S, Hashishin T, Tamiaki H. Construction of Chlorosomal Rod Self-Aggregates in the Solid State on Any Substrates from Synthetic Chlorophyll Derivatives Possessing an Oligomethylene Chain at the 17-Propionate Residue. Chemistry 2012; 18:13331-41. [DOI: 10.1002/chem.201201935] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Indexed: 11/09/2022]
|
5
|
Ganapathy S, Oostergetel GT, Reus M, Tsukatani Y, Gomez Maqueo Chew A, Buda F, Bryant DA, Holzwarth AR, de Groot HJM. Structural variability in wild-type and bchQ bchR mutant chlorosomes of the green sulfur bacterium Chlorobaculum tepidum. Biochemistry 2012; 51:4488-98. [PMID: 22577986 DOI: 10.1021/bi201817x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The self-aggregated state of bacteriochlorophyll (BChl) c molecules in chlorosomes belonging to a bchQ bchR mutant of the green sulfur bacteria Chlorobaculum tepidum, which mostly produces a single 17(2)-farnesyl-(R)-[8-ethyl,12-methyl]BChl c homologue, was characterized by solid-state nuclear magnetic resonance (NMR) spectroscopy and high-resolution electron microscopy. A nearly complete (1)H and (13)C chemical shift assignment was obtained from well-resolved homonuclear (13)C-(13)C and heteronuclear (1)H-(13)C NMR data sets collected from (13)C-enriched chlorosome preparations. Pronounced doubling (1:1) of specific (13)C and (1)H resonances revealed the presence of two distinct and nonequivalent BChl c components, attributed to all syn- and all anti-coordinated parallel stacks, depending on the rotation of the macrocycle with respect to the 3(1)-methyl group. Steric hindrance from the 20-methyl functionality induces structural differences between the syn and anti forms. A weak but significant and reproducible reflection at 1/0.69 nm(-1) in the direction perpendicular to the curvature of cylindrical segments observed with electron microscopy also suggests parallel stacking of BChl c molecules, though the observed lamellar spacing of 2.4 nm suggests weaker packing than for wild-type chlorosomes. We propose that relaxation of the pseudosymmetry observed for the wild type and a related BChl d mutant leads to extended domains of alternating syn and anti stacks in the bchQ bchR chlorosomes. Domains can be joined to form cylinders by helical syn-anti transition trajectories. The phase separation in domains on the cylindrical surface represents a basic mechanism for establishing suprastructural heterogeneity in an otherwise uniform supramolecular scaffolding framework that is well-ordered at the molecular level.
Collapse
Affiliation(s)
- Swapna Ganapathy
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
| | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Akutsu H, Egawa A, Fujiwara T. Atomic structure of the bacteriochlorophyll c assembly in intact chlorosomes from Chlorobium limicola determined by solid-state NMR. PHOTOSYNTHESIS RESEARCH 2010; 104:221-231. [PMID: 20063063 DOI: 10.1007/s11120-009-9523-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2009] [Accepted: 12/21/2009] [Indexed: 05/28/2023]
Abstract
Green sulfur photosynthetic bacteria optimize their antennas, chlorosomes, especially for harvesting weak light by organizing bacteriochlorophyll (BChl) assembly without any support of proteins. As it is difficult to crystallize the organelles, a high-resolution structure of the light-harvesting devices in the chlorosomes has not been clarified. We have determined the structure of BChl c assembly in the intact chlorosomes from Chlorobium limicola on the basis of (13)C dipolar spin-diffusion solid-state NMR analysis of uniformly (13)C-labeled chlorosomes. About 90 intermolecular C-C distances were obtained by the simultaneous assignment of distance correlations and the structure optimization preceded by the polarization-transfer matrix analysis. An atomic structure was obtained, using these distance constraints. The determined structure of the chlorosomal BChl c assembly is built with the parallel layers of piggyback-dimers. This supramolecular structure would provide insights into the mechanism of weak-light capturing.
Collapse
Affiliation(s)
- Hideo Akutsu
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Japan.
| | | | | |
Collapse
|
7
|
Linnanto JM, Korppi-Tommola JEI. Investigation on chlorosomal antenna geometries: tube, lamella and spiral-type self-aggregates. PHOTOSYNTHESIS RESEARCH 2008; 96:227-245. [PMID: 18443917 DOI: 10.1007/s11120-008-9304-3] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2007] [Accepted: 04/07/2008] [Indexed: 05/26/2023]
Abstract
Molecular mechanics calculations and exciton theory have been used to study pigment organization in chlorosomes of green bacteria. Single and double rod, multiple concentric rod, lamella, and Archimedean spiral macrostructures of bacteriochlorophyll c molecules were created and their spectral properties evaluated. The effects of length, width, diameter, and curvature of the macrostructures as well as orientations of monomeric transition dipole moment vectors on the spectral properties of the aggregates were studied. Calculated absorption, linear dichroism, and polarization dependent fluorescence-excitation spectra of the studied long macrostructures were practically identical, but circular dichroism spectra turned out to be very sensitive to geometry and monomeric transition dipole moment orientations of the aggregates. The simulations for long multiple rod and spiral-type macrostructures, observed in recent high-resolution electron microscopy images (Oostergetel et al., FEBS Lett 581:5435-5439, 2007) gave shapes of circular dichroism spectra observed experimentally for chlorosomes. It was shown that the ratio of total circular dichroism intensity to integrated absorption of the Q(y) transition is a good measure of degree of tubular structures in the chlorosomes. Calculations suggest that the broad Q(y) line width of chlorosomes of sulfur bacteria could be due to (1) different orientations of the transition moment vectors in multi-walled rod structures or (2) a variety of Bchl-aggregate structures in the chlorosomes.
Collapse
Affiliation(s)
- Juha M Linnanto
- Department of Chemistry, University of Jyväskylä, Jyväskylä, Finland.
| | | |
Collapse
|
8
|
Tamiaki H, Kitamoto H, Watanabe T, Shibata R. Self-aggregation of Synthetic Protobacteriochlorophyll-d Derivatives¶. Photochem Photobiol 2007. [DOI: 10.1111/j.1751-1097.2005.tb01537.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
9
|
Shibata Y, Saga Y, Tamiaki H, Itoh S. Polarized Fluorescence of Aggregated Bacteriochlorophyll c and Baseplate Bacteriochlorophyll a in Single Chlorosomes Isolated from Chloroflexus aurantiacus. Biochemistry 2007; 46:7062-8. [PMID: 17503774 DOI: 10.1021/bi0623072] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The polarization anisotropy of fluorescence from single chlorosomes isolated from a green filamentous bacterium, Chloroflexus aurantiacus, was measured using a confocal laser microscope at 13 K. Each single chlorosome that is floating in a frozen solvent exhibited strong polarization anisotropy of fluorescence. We calculated the degrees of fluorescence polarization for 51 floating single chlorosomes. The value ranged from 0.1 to 0.76 for the BChl-c aggregate in the core chlorosomes and from 0 to 0.4 for the energy acceptor BChl-a in the baseplate protein in the outer membrane. The shifts in polarization angles between the two emission bands were distributed over all the possible values with a sharp peak around 90 degrees , suggesting the perpendicular orientation between the transition dipoles of the fluorescence emission from the BChl-c aggregate and that from BChl-a. A simulation assuming a random orientation of chlorosomes reproduced the experimental results exactly. The analysis further indicated the appreciable contribution of the transition dipole of BChl-c that has an orientation perpendicular to the major polarization axis in each chlorosome. Small values of the degrees of polarization implied the BChl-a transition dipole to be somewhat tilted with respect to the normal of the cytoplasmic membrane to which chlorosomes are attached. These conclusions can be obtained only by observing the fluorescence of single chlorosomes.
Collapse
Affiliation(s)
- Yutaka Shibata
- Division of Material Science (Physics), Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan.
| | | | | | | |
Collapse
|
10
|
Egawa A, Fujiwara T, Mizoguchi T, Kakitani Y, Koyama Y, Akutsu H. Structure of the light-harvesting bacteriochlorophyll c assembly in chlorosomes from Chlorobium limicola determined by solid-state NMR. Proc Natl Acad Sci U S A 2007; 104:790-5. [PMID: 17215361 PMCID: PMC1783392 DOI: 10.1073/pnas.0605911104] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
We have determined the atomic structure of the bacteriochlorophyll c (BChl c) assembly in a huge light-harvesting organelle, the chlorosome of green photosynthetic bacteria, by solid-state NMR. Previous electron microscopic and spectroscopic studies indicated that chlorosomes have a cylindrical architecture with a diameter of approximately 10 nm consisting of layered BChl molecules. Assembly structures in huge noncrystalline chlorosomes have been proposed based mainly on structure-dependent chemical shifts and a few distances acquired by solid-state NMR, but those studies did not provide a definite structure. Our approach is based on (13)C dipolar spin-diffusion solid-state NMR of uniformly (13)C-labeled chlorosomes under magic-angle spinning. Approximately 90 intermolecular C C distances were obtained by simultaneous assignment of distance correlations and structure optimization preceded by polarization-transfer matrix analysis. It was determined from the approximately 90 intermolecular distances that BChl c molecules form piggyback-dimer-based parallel layers. This finding rules out the well known monomer-based structures. A molecular model of the cylinder in the chlorosome was built by using this structure. It provided insights into the mechanisms of efficient light harvesting and excitation transfer to the reaction centers. This work constitutes an important advance in the structure determination of huge intact systems that cannot be crystallized.
Collapse
Affiliation(s)
- Ayako Egawa
- *Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita 565-0871, Japan; and
| | - Toshimichi Fujiwara
- *Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita 565-0871, Japan; and
| | - Tadashi Mizoguchi
- Faculty of Science and Technology, Kwansei Gakuin University, Gakuen, Sanda 669-1337, Japan
| | - Yoshinori Kakitani
- Faculty of Science and Technology, Kwansei Gakuin University, Gakuen, Sanda 669-1337, Japan
| | - Yasushi Koyama
- Faculty of Science and Technology, Kwansei Gakuin University, Gakuen, Sanda 669-1337, Japan
| | - Hideo Akutsu
- *Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita 565-0871, Japan; and
- To whom correspondence should be addressed. E-mail:
| |
Collapse
|
11
|
Mafra L, Almeida Paz FA, Shi FN, Sá Ferreira RA, Carlos LD, Trindade T, Fernandez C, Klinowski J, Rocha J. Crystal Structure, Solid-State NMR Spectroscopic and Photoluminescence Studies of Organic-Inorganic Hybrid Materials (HL)6[Ge6(OH)6(hedp)6]·2(L)·nH2O, L = hqn or phen. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600680] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
12
|
Kakitani Y, Nagae H, Mizoguchi T, Egawa A, Akiba K, Fujiwara T, Akutsu H, Koyama Y. Assembly of a Mixture of Isomeric BChl c from Chlorobium limicola As Determined by Intermolecular 13C−13C Dipolar Correlations: Coexistence of Dimer-Based and Pseudo-Monomer-Based Stackings. Biochemistry 2006; 45:7574-85. [PMID: 16768453 DOI: 10.1021/bi0525728] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A mixture of bacteriochlorophyll (BChl) c isomers was extracted from the cells of Chlorobium limicola that were grown in the media of 13C-enriched and natural-abundance isotopic compositions. The magic-angle spinning 13C NMR proton-driven spin-diffusion spectra were recorded with mixing times of 50, 100, and 250 ms for two different kinds of in vitro aggregates, one consisting of pure [13C]BChl c and the other consisting of a 1:1 mixture of [13C]BChl c and [12C]BChl c; those peaks whose intensities were reduced to approximately 1/4 by this dilution were assigned to intermolecular 13C-13C dipolar correlation peaks. On the other hand, the nearest-neighbor intermolecular carbon-carbon close contacts with distances of 4-6 A were simulated, to predict observed correlation peaks, for six different models of BChl c assembly. They include weakly overlapped monomers forming structure 1 and structure 2, strongly overlapped dimers forming straight and inclined columns, and weakly overlapped dimers forming aligned and displaced layers. Comparison between the observed correlation peaks and the predicted carbon-carbon close contacts, for both the macrocycles and the side chains, led us to a conclusion that the weakly overlapped dimers forming displaced layers are most likely the assembly of the BChl c molecules in the aggregate.
Collapse
Affiliation(s)
- Yoshinori Kakitani
- Faculty of Science and Technology, Kwansei Gakuin University, Gakuen, Sanda 669-1337, Japan
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Miyatake T, Shitasue K, Omori Y, Nakagawa K, Fujiwara M, Matsushita T, Tamiaki H. Time-dependent self-assembly of 31-epimerically pure and mixed zinc methyl bacteriopheophorbides-d in an aqueous THF solution. PHOTOSYNTHESIS RESEARCH 2005; 86:131-6. [PMID: 16172932 DOI: 10.1007/s11120-005-2441-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2004] [Accepted: 02/14/2005] [Indexed: 05/04/2023]
Abstract
The self-aggregation process of 3(1)-epimerically pure and mixed zinc methyl bacteriopheophorbides-d (ZMBPhes-d) was examined by stopped-flow technique. A 33(v/v)% tetrahydrofuran (THF) - water solution of ZMBPhe-d was rapidly mixed with a 7(v/v)% THF - water solution to form a chlorosome-type aggregate with a red-shifted Qy band around 700 nm. We observed a rapid autocatalytic aggregation in a subsecond time scale. Aggregates of the 3(1)R epimer increased with a change in the Qy absorption maximum from 698 to 705 nm, suggesting that small aggregates formed as intermediate species. In addition, the rate of aggregation was dependent on the stereochemistry at the 3(1)-position of ZMBPhe-d; the 3(1)R epimer self-aggregated more rapidly than the 3(1)S epimer.
Collapse
Affiliation(s)
- Tomohiro Miyatake
- Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Otsu, Shiga, 520-2194, Japan.
| | | | | | | | | | | | | |
Collapse
|
14
|
Self-aggregates of bacteriochlorophylls-c, d and e in a light-harvesting antenna system of green photosynthetic bacteria: Effect of stereochemistry at the chiral 3-(1-hydroxyethyl) group on the supramolecular arrangement of chlorophyllous pigments. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2005. [DOI: 10.1016/j.jphotochemrev.2005.06.001] [Citation(s) in RCA: 108] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
15
|
Tamiaki H, Kitamoto H, Watanabe T, Shibata R. Self-aggregation of Synthetic Protobacteriochlorophyll-d Derivatives¶. Photochem Photobiol 2005. [DOI: 10.1562/2004-08-02-ra-254.1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
16
|
Kunieda M, Tamiaki H. Self-Aggregation of Synthetic Zinc Oxo-Bacteriochlorins Bearing Substituents Characteristic of Chlorosomal Chlorophylls. J Org Chem 2004; 70:820-8. [PMID: 15675838 DOI: 10.1021/jo048263p] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We prepared novel zinc 8-ethyl-8-methyl-7-oxo- and 7-ethyl-7-methyl-8-oxo-bacteriochlorins 1 and 2 possessing substituents characteristic of chlorosomal chlorophylls, exclusively observed in extramembraneous light-harvesting antennas of photosynthetic green bacteria. The electronic absorption spectra of monomeric 1 and 2 in THF were obviously different: the Q(y) maximum of the former was 724 and that of the latter was 683 nm. This observed spectral difference was clearly explained by theoretical ZINDO/S calculation of their energetically minimized molecules. The optical properties of monomeric 1/2 were controlled by the electronic effect of the 7/8-oxo groups. Specific spectral changes in the electronic, CD, and FT-IR absorption spectra by dilution of the monomeric THF solutions of 1/2 with a 100/200-fold volume of cyclohexane showed the formation of chlorosomal self-aggregation species constructed by 13-C=O...H-O(3(1))...Zn and pi-pi stacking. Especially, the red-shift values in the Q(y) band of 1/2 by self-aggregation were 2450/1970 cm(-1), indicating that exciton interaction among the composite molecules in the self-aggregation of 1 was stronger than in those of 2. Molecular model calculations for dodecamers of 1/2 based on a parallel chain arrangement gave partially different supramolecular structures; the specific hydrogen-bonding distances in 2-dodecamer were larger than those of 1-dodecamer, while both coordinations gave the same Zn-O distance. These modeling results showed that 1 was more tightly packed in the self-aggregates to give a larger red-shift value in the Q(y) band by self-aggregation than 2. The difference in the supramolecular structures is mainly ascribable to the steric effect of 8/7-dialkyl groups in self-aggregates of 1/2.
Collapse
Affiliation(s)
- Michio Kunieda
- Department of Bioscience and Biotechnology, Faculty of Science and Engineering, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | | |
Collapse
|
17
|
de Boer I, Matysik J, Erkelens K, Sasaki SI, Miyatake T, Yagai S, Tamiaki H, Holzwarth AR, de Groot HJM. MAS NMR Structures of Aggregated Cadmium Chlorins Reveal Molecular Control of Self-Assembly of Chlorosomal Bacteriochlorophylls. J Phys Chem B 2004. [DOI: 10.1021/jp047048+] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|