2026-08-12 REL PDBj INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY STRUCTURE_SUMMARY database_2 em_3d_fitting_list em_admin entity pdbx_initial_refinement_model _chem_comp.name _database_2.pdbx_DOI _database_2.pdbx_database_accession _em_3d_fitting_list.accession_code _em_3d_fitting_list.initial_refinement_model_id _em_3d_fitting_list.source_name _em_3d_fitting_list.type _em_admin.last_update _entity.pdbx_description EXPERIMENTAL_SUMMARY em_admin _em_admin.last_update EXPERIMENTAL_SUMMARY em_admin _em_admin.last_update STRUCTURE_SUMMARY chem_comp chem_comp_atom chem_comp_bond database_2 em_3d_fitting_list em_admin entity pdbx_entity_nonpoly pdbx_entry_details pdbx_initial_refinement_model pdbx_modification_feature pdbx_struct_conn_angle pdbx_validate_chiral struct_conn struct_conn_type _chem_comp.formula _chem_comp.name _database_2.pdbx_DOI _database_2.pdbx_database_accession _em_3d_fitting_list.accession_code _em_3d_fitting_list.initial_refinement_model_id _em_3d_fitting_list.source_name _em_3d_fitting_list.type _em_admin.last_update _entity.pdbx_description _pdbx_entity_nonpoly.name _pdbx_entry_details.has_protein_modification _pdbx_struct_conn_angle.ptnr1_auth_asym_id _pdbx_struct_conn_angle.ptnr1_auth_comp_id _pdbx_struct_conn_angle.ptnr1_auth_seq_id _pdbx_struct_conn_angle.ptnr1_label_asym_id _pdbx_struct_conn_angle.ptnr1_label_atom_id _pdbx_struct_conn_angle.ptnr1_label_comp_id _pdbx_struct_conn_angle.ptnr1_label_seq_id _pdbx_struct_conn_angle.ptnr3_auth_asym_id _pdbx_struct_conn_angle.ptnr3_auth_comp_id _pdbx_struct_conn_angle.ptnr3_auth_seq_id _pdbx_struct_conn_angle.ptnr3_label_asym_id _pdbx_struct_conn_angle.ptnr3_label_atom_id _pdbx_struct_conn_angle.ptnr3_label_comp_id _pdbx_struct_conn_angle.ptnr3_label_seq_id _pdbx_struct_conn_angle.value _struct_conn.conn_type_id _struct_conn.id _struct_conn.pdbx_dist_value _struct_conn.pdbx_leaving_atom_flag _struct_conn.ptnr1_auth_asym_id _struct_conn.ptnr1_auth_comp_id _struct_conn.ptnr1_auth_seq_id _struct_conn.ptnr1_label_asym_id _struct_conn.ptnr1_label_atom_id _struct_conn.ptnr1_label_comp_id _struct_conn.ptnr1_label_seq_id _struct_conn.ptnr2_auth_asym_id _struct_conn.ptnr2_auth_comp_id _struct_conn.ptnr2_auth_seq_id _struct_conn.ptnr2_label_asym_id _struct_conn.ptnr2_label_atom_id _struct_conn.ptnr2_label_comp_id _struct_conn.ptnr2_label_seq_id _struct_conn_type.id STRUCTURE_SUMMARY em_admin pdbx_modification_feature pdbx_unobs_or_zero_occ_atoms pdbx_validate_close_contact struct_conn _em_admin.last_update REMEDIATION REPOSITORY Metalloprotein remediation STRUCTURE_SUMMARY chem_comp_atom chem_comp_bond em_admin pdbx_modification_feature pdbx_nonpoly_atom_coordination pdbx_struct_conn_angle pdbx_unobs_or_zero_occ_atoms pdbx_validate_chiral pdbx_validate_close_contact struct_conn _chem_comp_atom.pdbx_stereo_config _em_admin.last_update PDBj PDBj 2019-01-07 2019-06-05 2019-08-07 2026-08-12 Nagao R Kato K Photosystem, ELECTRON TRANSPORT Nagao R Kato K Suzuki T Ifuku K Uchiyama I Kashino Y Dohmae N Akimoto S Shen JR Miyazaki N Akita F Nat.Plants UK 5 890 901 2019 31358960 doi:10.1038/s41477-019-0477-x 2055-0278 6j40 FULLOVERLAP PDB 6J3Y unspecified

6J3Y contains the same protein in C2S2-type PSII-FCPII supercomplex from diatom.

PDB 6J3Z unspecified

6J3Z contains the same protein in C2S1M1-type PSII-FCPII supercomplex from diatom.

EMDB EMD-9777 associated EM volume

Structure of C2S2M2-type PSII-FCPII supercomplex from diatom

C2S2M2-type PSII-FCPII supercomplex C2S2M2-type PSII-FCPII supercomplex 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Chaetoceros gracilis 1.15 Photosystem II reaction center protein D1 Chaetoceros gracilis 0.038183499999999995 2 LEVO MTATLERREGVSLWERFCAWITSTENRLYIGWFGCLMFPTLLTATSCFIIAFIAAPPVDIDGIREPVAGSLLYGNNIISG AVVPSSNAIGMHFYPIWEAASIDEWLYNGGPYQLIVLHFLLGVSAYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLV YPIGQGSFSDGMPLGISGTFNFMLVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETTENESTNYGYKFG QEEETYNIVAAHGYFGRLIFQYASFNNSRALHFFLALWPVVGIWITSMGISTMAFNLNGFNFNQSVVDSQGRVINTWADI LNRANLGIEVMHERNAHNFPLDLA Photosystem II chlorophyll protein CP47 Chaetoceros gracilis 0.056475301 2 LEVO MALPWYRVHTVVLNDPGRLIAVHLMHTALVAGWAGSMALYELAVFDPSDPVLNPMWRQGMFVMPFMTRLGITDSWGGWSI TGESVSNPGIWSFEGVALSHIILSGMCFLAAIWHWVYWDLELFRDPRTGEPALDLPKIFGIHLFLSGLLCFGFGAFHVTG LFGPGIWVSDAYGITGKVQPVAPAWGADGFNPFNPGGIAAHHIAAGIFGIFAGIFHLTVRPPQRLYRALRMGNIETVLSS SISAVFFAAFVTSGTMWYGAAATPIELFGPTRYQWDSGYFQQEIERQVETSVSEGLSESQAWSRIPDKLAFYDYIGNNPA KGGLFRAGPMNKGDGIAEAWLGHPIFRDKEGRELTVRRMPAFFETFPVILVDKDGIIRADIPFRRAESKYSIEQVGVTVD FYGGKLNGQTFKDAPTVKKFARKAQLGEVFEFDRTSLESDGVFRSSPRGWYTYGHANFALLFFFGHLWHGGRTIFRDVFT GIGAEVTEQVEFGAFQKLGDKSTKKQGAV Photosystem II chlorophyll protein CP43 Chaetoceros gracilis 0.051947262 2 LEVO MKTLYSLRRYYHVETPFNSSIAGRDIESTGFAWWSGNARLINVSGKLLGAHVAHAGLMVFWAGAMVLFEVSHFVPEKPTY EQGFILIQHLATLGYGIGPGGEITSTVPYFAVGVIHLISSAILGFGGIYHSLLGPDTLEESFPFFGYDWRDKNKMTTILG IHLCLLGLGSFLLVIKAMYLGGVYDTWAPGGGDVRYITTPTLNPIVIFGYVFRSPFGGDGWVVSVNNMEDVIGGHIWVGI LCITGGIWHIFTKPFAWARRAFVWSGEAYLSYSLAAISLMGFTAALYSWYNNTAYPSELYGPTGPEASQAQAFTFLVRDQ RLGANVSSAQGPTGLGKYLMRSPSGEIIFGGETMRFWDLRAPWVEPLRGPNGLDINKIKNDIQPWQERRAAEYMTHAPLG SLNSVGGVATEINSVNYVSPRSWLCCSHFFLAFFFLVGHWWHSGRARAAAAGFEKGINRANEPVLSMRPID Photosystem II reaction center protein D2 Chaetoceros gracilis 0.039069519999999996 2 LEVO MTIAIGQNQERGLFDLVDDWLKKDRFVFVGWSGLLLFPTAYLAAGGWMTGTTFVTSWYTHGLASSYLEGCNFLTAAVSTP ANSVGHSLLLLWGPEAQGDFTRWCQIGGLWTFVALHGAFGLIGFCLRQFEIARLVGIRPYNAIAFSGPIAVFVSVFLLYP LGQASWFFAPSFGVAAIFRFLLFLQGFHNWTLNPFHMMGVAGILGGALLCAIHGATVENTLFEDGDAANTFRAFTPTQSE ETYSMVTANRFWSQIFGVAFSNKRWLHFFMLFVPVTGLWTSSIGIVGLALNLRAYDFVSQELRAAEDPEFETFYTKNHLL DEGIRAWMAAQDQPHENFVFPEEVLPRGNAL Cytochrome b559 subunit alpha Chaetoceros gracilis 0.009507667 2 LEVO MSGGSTGERPFSDIITSVRYWIIHSITIPSLFVSGWLFISTGLAYDVFGTPRPNEYFTQDRQQVPLVNDRFSAKQELEDL TKGL Cytochrome b559 subunit beta Chaetoceros gracilis 0.004912796 2 LEVO MTNNINQPVAYPIFTFRWLAIHGLAIPTVFFLGGITAMQFIQR Photosystem II reaction center protein H Chaetoceros gracilis 0.007418827 2 LEVO MALRTRLGEILRPLNAEYGKVAPGWGTTPIMGIVMLAFLIFLVIILQIYNSSLIIENVDVDWANGIV B7XBY7 Photosystem II reaction center protein I Chaetoceros gracilis 0.004427212 2 LEVO MLTLKILVYTTVIFFVSLFIFGFLSSDPSRNPNRKDLE Photosystem II reaction center protein J Chaetoceros gracilis 0.004093833 2 LEVO MTNTGRIPLWLVGLVGGLAVITMLSLFFYGSYSGLGSSL Photosystem II reaction center protein K Chaetoceros gracilis 0.004978028 2 LEVO MESLLLARLPEAYVVFSPIVDVLPIIPVFFLLLAFVWQAAIGFR Photosystem II reaction center protein L Chaetoceros gracilis 0.004367076 2 LEVO MTGPNPNKQAVELNRTSLYWGLLLIFVLAVLFSSYFFN Photosystem II reaction center protein M Chaetoceros gracilis 0.014180403 2 LEVO LHLTVVSEVGKVAVGSIPAAAIASPAFAMDSVVESLPTNMLAGEVQFGAYLAVLLGTFLPALFLVNLFIQTEARKAGKAG GQDSDLDGYLCIRVWIAIEAGRLSSHLWCPLVLPHFWRNNRTVSHLYGRYQ Extrinsic protein in photosystem II Chaetoceros gracilis 0.026762296999999997 2 LEVO LTKSQINELSYLQVKGTGLANRCAEVVGEDSIKPKPGAKLVDMCIEPKAWAVEEEVGKAGKTEKKFVNSKVMTRQTYTLD AIEGPITVDGGKITFNEKEGIDYAATTVQLPGGERVPFLFTVKDLVAKGNGDTFKPGFQMGGDFNTPSYRTGLFLDPKGR GGTTGYDMAVALPALQLGEEGDAELFGENNKVFDITQGRIEMEVNKVNAEDSEIGGVFVATQLSDTDMGSKTPKKVLTKG IFYAKVDQ B6ZHE8 Photosystem II reaction center protein T Chaetoceros gracilis 0.003711547 2 LEVO MEALVYTFLLIGTLMVIFFAVFFRETPRILR Extrinsic protein in photosystem II Chaetoceros gracilis 0.010137501 2 LEVO VIDYENIGYLGGSSIVDINNANVRAYLKMPGMYPTVAGKIVSHGPYSGVADLYKIPGLSSAEADVIKKYESRLTAKTPSP DYVIDRINNGLYR B6ZHF0 Cytochrome c-550 Chaetoceros gracilis 0.014893812 2 LEVO IDLDEATRTVVVDNAGNTTVLTPEQVKRGKRLFNATCGACHVGGITKTNPNVGLDPEALSLATPRRDNISALVDYIKNPT TYDGLESIAEVHPSIKSADIYPRMRSLTDEDLYSIAGHIMLSPKIASEKWGGGKIYY B6ZHF4 Photosystem II reaction center protein Ycf12 Chaetoceros gracilis 0.0036095 2 LEVO MINWQVIGQLMSTAVIMLAGPAVIVLLALKKGNL Photosystem II reaction center X protein Chaetoceros gracilis 0.003859647 2 LEVO MTASLSNFIASLIAGGVVVGVIAIALIVISKSDRILRS B6ZHF2 Photosystem II reaction center protein Z Chaetoceros gracilis 0.006528887 2 LEVO MITLLVALLVLISLGLVVTVPVALATPGEWEIAKGKFNRFFQIWVFLVIVIAAADGISSSI Extrinsic protein in photosystem II Chaetoceros gracilis 0.017088086 2 LEVO AVGESPRFSVFGLVGDGTSYSEGAAYGTDQADKLYSPYSVYSPEGEKSLYKPDNAEYLARKKAVLAETKNRLQKIPAYVD KKEWFNVKDELTRYMYETRGAVRSLSSSVTQKEKAEVFFRALEDTYGAATLKKGDAVKASNDKAIAALDAFTATL B6ZHE9 Photosystem II reaction center protein W Chaetoceros gracilis 0.007848743 2 LEVO MAALAGFMPAILSSTAAVATEGTNEWFGVDDLRLLAVLFLGHWAILSLWLGSYGDSNEDEDFFGEIDYSARK Unknown protein 0 Chaetoceros gracilis 0.0026562649999999997 2 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) Unknown protein 1 Chaetoceros gracilis 0.0025711609999999998 2 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) Unknown protein 2 Chaetoceros gracilis 0.000869063 2 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1 Chaetoceros gracilis 0.022098182 16 LEVO MKLAVAALLVASAAAFAPAPASKASTSLKVSEIELGVTEPLGVYDPLGWLESEPEAFERRRAVERKHGRVAMAAVVGTIV HNNHIVFDGYLSPSNNLKFSDIPTGVDGIRAIPTAGLAQILAFFALVELAWMPASKYDGDYGVGYFGTDIKDPEEKARKL NVELNNGRAAMMGIMGNMVAEVLTGQTMYEQYASGHISPFGDGQGVF Fucoxanthin chlorophyll a/c-binding protein monomer 1 Chaetoceros gracilis 0.018315516 2 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) Fucoxanthin chlorophyll a/c-binding protein monomer 2 Chaetoceros gracilis 0.012188016 2 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) Fucoxanthin chlorophyll a/c-binding protein monomer 3 Chaetoceros gracilis 0.013209273999999998 2 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) FE (II) ION 5.5845e-05 2 FE2 CHLOROPHYLL A 0.000893489 290 CLA PHEOPHYTIN A 0.0008712 4 PHO BETA-CAROTENE 0.000536873 24 BCR 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL 0.0007951159999999999 6 SQD BICARBONATE ION 6.1017e-05 2 BCT 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE 0.00072297 8 LHG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE 0.0007871579999999999 14 LMG CA-MN4-O5 CLUSTER 0.00033982699999999996 2 OEX DIGALACTOSYL DIACYL GLYCEROL (DGDG) 0.0009492989999999999 8 DGD 2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE 0.000749201 4 PL9 PROTOPORPHYRIN IX CONTAINING FE 0.000616487 4 HEM (3S,3'S,5R,5'R,6S,6'R,8'R)-3,5'-dihydroxy-8-oxo-6',7'-didehydro-5,5',6,6',7,8-hexahydro-5,6-epoxy-beta,beta-caroten-3'- yl acetate 0.0006589059999999999 118 A86 DODECYL-ALPHA-D-MALTOSIDE 0.000510615 2 LMU singleParticle particle 0.256 6.5 20.0 MES-NaOH 0.02 DDM Quantifoil R1.2/1.3 COPPER 200 CARBON PLASMA CLEANING 30 ETHANE 100 277 FEI VITROBOT MARK IV FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 FEI FALCON III (4k x 4k) 20.0 1 CTFFIND 4.1 PHASE FLIPPING AND AMPLITUDE CORRECTION 3JCU C2 FOURIER SPACE 3.8 FSC 0.143 CUT-OFF RELION 2.1 98936 MAXIMUM LIKELIHOOD RELION 2.1 MAXIMUM LIKELIHOOD RELION 2.1 RELION 2.1 3WU2 PDB experimental model 3JCU PDB experimental model FLEXIBLE FIT Correlation coefficient REAL