Homodimeric reaction center of H. modesticaldum

Structure of a symmetric photosynthetic reaction center-photosystem.

Three-dimensional structure of cyanobacterial photosystem I at 2.5 A resolution.

X-ray structure analysis of a membrane protein complex. Electron density map at 3 A resolution and a model of the chromophores of the photosynthetic reaction center from Rhodopseudomonas viridis.

Crystal structure of the RC-LH1 core complex from Rhodopseudomonas palustris.

Purification of the photosynthetic reaction center from Heliobacterium modesticaldum.

NPRAQVFEYFKLKVPATRGAVLKAHINHLGNVAAMVSFILVHHLSWDPATQGVLWAPATMFYARLYQLGLDAVALSPDAL
FVARMHLLAAIILWGFGHVKSPAEEKFLEKVTMGKALVAQFHFFALIATLWGLHMAFYGILGPSGKLEPTGLSFDMFGPI
TPATMAGNHVAFGAVFFLGGIFHYFAGFNTKRFAFFEKDWEAVLSVSCQILAFHFATVVFAMIIWQHPQLGFGFMREYAV
SQYAGPELKMIAQSNPGLLVKQAILGHLVMGIMFWIGGVFHGAHFMLRVLNDPKLAEEMKDFKFIKRCYDHEFQKKFLAL
IMFGAFLPIFVSYGIATHNTIADIHAASKTGLFAHMTYINIGTPLHDAIFGSKGSISEFVAAHAIAGGLHFTMVPMWRMV
FFSKVSPWTTKVGMKAKRDGEFPCLGPAYGGTCSISLVDQFYLAIFFSLQVIAPAWFYIDGCWMGSFVAVAAPYNDIYQA
ALATFNSHNPLHQLSPLTNMGYFSYIIQQTTAMFSRYDGHMIQALLGAHFIWAFTFSMLFQYRGSRDEGAMVLKWAHQQV
GVGFAGKMYNRALSLKEGKAIGCFLFFKMTIVCMWALAMV

Heliobacterium modesticaldum (strain ATCC 51547 / Ice1)

0.3 mM HbRC, 100 mM Tris-HCl (ph 8.2), 600 mM NH4Cl, 0.02 % b-DDM, up to 1% n-heptyl-b-D-glucopyranoside, up to 20 % PEG 500

Department of Energy (DOE, United States)

The [Fe4-S4] cluster is shared between two monomers of the reaction center. The monomer can not make charge separation

MOLECULAR REPLACEMENT FROM 1JB0 DERIVED
MODELS

photosynthesis, reaction center, homodimeric

NPRAQVFEYFKDKVPATRGAVLKAHINHLGNVAAMVSFILVHHLSWDPATQGVLWAPATMFYARLYQLGLDATALSPDAL
FVARMHLLAAIILWGFGHVKSPAEEKFLEKVTMGKALVAQFHFFALIATLWGLHMAFYGILGPSGKLEPTGLSFDMFGPI
TPATMAGNHVAFGAVFFLGGIFHYFAGFNTKRFAFFEKDWEAVLSVSCQILAFHFATVVFAMIIWQHPQLGFGFMREYAV
SQYAGPELKMIAQSNPGLLVKQAILGHLVMGIMFWIGGVFHGAHFMLRVLNDPKLAEEMKDFKFIKRCYDHEFQKKFLAL
IMFGAFLPIFVSYGIATHNTIADIHAASKTGLFAHMTYINIGTPLHDAIFGSKGSISEFVAAHAIAGGLHFTMVPMWRMV
FFSKVSPWTTKVGMKAKRDGEFPCLGPAYGGTCSISLVDQFYLAIFFSLQVIAPAWFYIDGCWMGSFVAVAAPYNDIYQA
ALATFNSHNPLHQLSPLTNMGYFSYIIQQTTAMFSRYDGHMIQALLGAHFIWAFTFSMLFQYRGSRDEGAMVLKWAHEQV
GVGFAGKMYNRALSLKEGKAIGCFLFFKMTIVCMWALAMV