NONPHOTOCHEMICAL HOLE BURNING OF THE B800-B850 ANTENNA COMPLEX OF RHODOPSEUDOMONAS-ACIDOPHILA

被引:73
作者
REDDY, NRS
COGDELL, RJ
ZHAO, L
SMALL, GJ
机构
[1] IOWA STATE UNIV SCI & TECHNOL, US DOE, AMES LAB, AMES, IA 50011 USA
[2] IOWA STATE UNIV SCI & TECHNOL, DEPT CHEM, AMES, IA 50011 USA
[3] UNIV GLASGOW, DEPT BOT, GLASGOW G12 8QQ, SCOTLAND
[4] ACAD SINICA, INST PHYS, BEIJING 100101, PEOPLES R CHINA
关键词
D O I
10.1111/j.1751-1097.1993.tb02251.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Detailed burn wavelength-dependent hole-burning studies of the title complex have been performed. The zero-phonon hole (ZPH) widths for B800 at 4.2 K are 6.0 +/- 0.3 cm-1 and are discussed in terms of B800-B850 and B800-B800 energy transfer. The B800* lifetime is 1.8 +/- 0.2 ps. The site inhomogeneous broadening (GAMMA(I)) of B800 is 240 cm-1. The B850 (located at 864 nm at 4.2 K) hole spectra reveal that B850 suffers from significant homogeneous broadening, which is attributed to unit cell exciton level structure and ultrafast interexciton level relaxation. Novel ZPH action spectra lead to the resolution of a minor component at 885 nm, which is the analogue of B870 of Rhodobacter sphaeroides previously assigned as the lowest exciton level of the B850 exciton band. The B870 ZPH width of 2.0 +/- 0.2 cm-1 for Rhodopseudomonas acidophila leads to a total dephasing time of 5.3 ps, which is attributed to exciton scattering that stems from the energetic inequivalence of neighboring B850 unit cells.
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收藏
页码:35 / 39
页数:5
相关论文
共 24 条
[1]   ENERGY-TRANSFER WITHIN THE ISOLATED LIGHT-HARVESTING B800-850 PIGMENT-PROTEIN COMPLEX OF RHODOBACTER-SPHAEROIDES [J].
BERGSTROM, H ;
SUNDSTROM, V ;
VANGRONDELLE, R ;
AKESSON, E ;
GILLBRO, T .
BIOCHIMICA ET BIOPHYSICA ACTA, 1986, 852 (2-3) :279-287
[2]   ENERGY-TRANSFER DYNAMICS OF ISOLATED B800-850 AND B800-820 PIGMENT-PROTEIN COMPLEXES OF RHODOBACTER-SPHAEROIDES AND RHODOPSEUDOMONAS-ACIDOPHILA [J].
BERGSTROM, H ;
SUNDSTROM, V ;
VANGRONDELLE, R ;
GILLBRO, T ;
COGDELL, R .
BIOCHIMICA ET BIOPHYSICA ACTA, 1988, 936 (01) :90-98
[3]   LINEAR DICHROISM OF LIGHT HARVESTING BACTERIOCHLOROPHYLL PROTEINS FROM RHODOPSEUDOMONAS-SPHAEROIDES IN STRETCHED POLYVINYL-ALCOHOL FILMS [J].
BOLT, J ;
SAUER, K .
BIOCHIMICA ET BIOPHYSICA ACTA, 1979, 546 (01) :54-63
[4]   MINOR COMPONENT B-905 OF LIGHT-HARVESTING ANTENNA IN RHODOSPIRILLUM-RUBRUM CHROMATOPHORES AND THE MECHANISM OF SINGLET-SINGLET ANNIHILATION AS STUDIED BY DIFFERENCE SELECTIVE PICOSECOND SPECTROSCOPY [J].
BORISOV, AY ;
GADONAS, RA ;
DANIELIUS, RV ;
PISKARSKAS, AS ;
RAZJIVIN, AP .
FEBS LETTERS, 1982, 138 (01) :25-28
[5]   NONPHOTOCHEMICAL HOLEBURNING IN A PROTEIN MATRIX - CHLOROPHYLLIDE IN APOMYOGLOBIN [J].
BOXER, SG ;
GOTTFRIED, DS ;
LOCKHART, DJ ;
MIDDENDORF, TR .
JOURNAL OF CHEMICAL PHYSICS, 1987, 86 (04) :2439-2441
[6]   POLYPEPTIDES AND BACTERIOCHLOROPHYLL ORGANIZATION IN THE LIGHT-HARVESTING COMPLEX-B850 OF RHODOBACTER-SPHAEROIDES R-26.1 [J].
BRAUN, P ;
SCHERZ, A .
BIOCHEMISTRY, 1991, 30 (21) :5177-5184
[7]   CIRCULAR-DICHROISM OF LIGHT-HARVESTING COMPLEXES FROM PURPLE PHOTOSYNTHETIC BACTERIA [J].
COGDELL, RJ ;
SCHEER, H .
PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1985, 42 (06) :669-678
[8]   GENETICALLY MODIFIED PHOTOSYNTHETIC ANTENNA COMPLEXES WITH BLUESHIFTED ABSORBENCY BANDS [J].
FOWLER, GJS ;
VISSCHERS, RW ;
GRIEF, GG ;
VANGRONDELLE, R ;
HUNTER, CN .
NATURE, 1992, 355 (6363) :848-850
[9]   DIRECTED PICOSECOND EXCITATION TRANSPORT IN PURPLE PHOTOSYNTHETIC BACTERIA [J].
FREIBERG, A ;
GODIK, VI ;
PULLERITS, T ;
TIMPMANN, K .
CHEMICAL PHYSICS, 1988, 128 (01) :227-235
[10]   EXCITED-STATE STRUCTURE AND ENERGY-TRANSFER DYNAMICS OF THE BACTERIOCHLOROPHYLL-A ANTENNA COMPLEX FROM PROSTHECOCHLORIS-AESTUARII [J].
JOHNSON, SG ;
SMALL, GJ .
JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (01) :471-479