HEADER MEMBRANE PROTEIN 23-JAN-26 22UH TITLE SYNECHOCOCCUS ELONGATUS PCC7942 SEOMP85 COMPND MOL_ID: 1; COMPND 2 MOLECULE: OUTER ENVELOPE MEMBRANE PROTEIN; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 OTHER_DETAILS: SIGNAL PEPTIDE:1-71; FLAG TAG: 114-135. SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SYNECHOCOCCUS ELONGATUS PCC 7942 = FACHB-805; SOURCE 3 ORGANISM_TAXID: 1140; SOURCE 4 STRAIN: PCC7942; SOURCE 5 GENE: SYNPCC7942_0928; SOURCE 6 EXPRESSION_SYSTEM: SYNECHOCOCCUS ELONGATUS PCC 7942 = FACHB-805; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 1140 KEYWDS OMP85, TOC75, CYANOBACTERIA, SYNECHOCOCCUS ELONGATUS PCC7942, KEYWDS 2 MEMBRANE PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR Y.L.CHEN,H.M.LI REVDAT 1 28-OCT-26 22UH 0 JRNL AUTH Y.L.CHEN,H.M.LI,Y.C.CHANG JRNL TITL STRUCTURE AND FUNCTION OF CYANOBACTERIAL OMP85 REVEAL JRNL TITL 2 TOC159/TOC90 AS A CHLOROPLAST PROTEIN IMPORT PORE JRNL REF NAT COMMUN 2026 JRNL REFN ESSN 2041-1723 JRNL DOI 10.1038/S41467-026-78967-Y REMARK 2 REMARK 2 RESOLUTION. 3.13 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, CRYOSPARC REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : NULL REMARK 3 REFINEMENT SPACE : REAL REMARK 3 REFINEMENT PROTOCOL : AB INITIO MODEL REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : NULL REMARK 3 REMARK 3 FITTING PROCEDURE : NULL REMARK 3 REMARK 3 EM IMAGE RECONSTRUCTION STATISTICS REMARK 3 NOMINAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 ACTUAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 EFFECTIVE RESOLUTION (ANGSTROMS) : 3.130 REMARK 3 NUMBER OF PARTICLES : 272836 REMARK 3 CTF CORRECTION METHOD : PHASE FLIPPING AND AMPLITUDE REMARK 3 CORRECTION REMARK 3 REMARK 3 EM RECONSTRUCTION MAGNIFICATION CALIBRATION: NULL REMARK 3 REMARK 3 OTHER DETAILS: NULL REMARK 4 REMARK 4 22UH COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 27-JAN-26. REMARK 100 THE DEPOSITION ID IS D_1300069151. REMARK 245 REMARK 245 EXPERIMENTAL DETAILS REMARK 245 RECONSTRUCTION METHOD : SINGLE PARTICLE REMARK 245 SPECIMEN TYPE : NULL REMARK 245 REMARK 245 ELECTRON MICROSCOPE SAMPLE REMARK 245 SAMPLE TYPE : PARTICLE REMARK 245 PARTICLE TYPE : POINT REMARK 245 NAME OF SAMPLE : SEOMP85 REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 1.00 REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : NULL REMARK 245 SAMPLE BUFFER : NULL REMARK 245 PH : 7.50 REMARK 245 SAMPLE DETAILS : NULL REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : NULL REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : TFS KRIOS REMARK 245 DETECTOR TYPE : GATAN K3 BIOQUANTUM (6K X REMARK 245 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 400.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2500.00 REMARK 245 MINIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 MAXIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 NOMINAL CS : 2.70 REMARK 245 IMAGING MODE : BRIGHT FIELD REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 5000.00 REMARK 245 ILLUMINATION MODE : FLOOD BEAM REMARK 245 NOMINAL MAGNIFICATION : NULL REMARK 245 CALIBRATED MAGNIFICATION : NULL REMARK 245 SOURCE : FIELD EMISSION GUN REMARK 245 ACCELERATION VOLTAGE (KV) : 300 REMARK 245 IMAGING DETAILS : NULL REMARK 247 REMARK 247 ELECTRON MICROSCOPY REMARK 247 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM ELECTRON REMARK 247 MICROSCOPY DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE REMARK 247 THAT CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES REMARK 247 ON THESE RECORDS ARE MEANINGLESS EXCEPT FOR THE CALCULATION REMARK 247 OF THE STRUCTURE FACTORS. REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON REMARK 300 BURIED SURFACE AREA. REMARK 350 REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000 REMARK 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 PRO A 192 REMARK 465 ASN A 193 REMARK 465 PRO A 194 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 OG1 THR A 286 OE1 GLU A 289 1.84 REMARK 500 OG SER A 152 OE1 GLN A 156 1.99 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ASN A 389 CB - CA - C ANGL. DEV. = 13.0 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 PRO A 131 -178.42 -67.08 REMARK 500 THR A 180 148.33 -170.06 REMARK 500 ASP A 209 -6.90 74.35 REMARK 500 SER A 257 68.10 62.85 REMARK 500 ASN A 291 157.64 179.91 REMARK 500 ASP A 345 144.62 -171.24 REMARK 500 ASN A 389 -60.33 70.86 REMARK 500 PRO A 419 43.31 -78.19 REMARK 500 ASN A 446 -168.98 -160.70 REMARK 500 GLU A 476 5.31 57.25 REMARK 500 ASP A 501 -169.34 -79.89 REMARK 500 ILE A 571 -62.01 -108.42 REMARK 500 LEU A 574 12.45 -145.27 REMARK 500 PRO A 585 48.85 -84.54 REMARK 500 CYS A 590 88.65 -156.54 REMARK 500 TYR A 624 151.73 -45.59 REMARK 500 SER A 648 -71.37 -63.39 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-68681 RELATED DB: EMDB REMARK 900 SYNECHOCOCCUS ELONGATUS PCC7942 SEOMP85 REMARK 900 RELATED ID: EMD-68890 RELATED DB: EMDB REMARK 900 SYNECHOCOCCUS ELONGATUS PCC7942 SEOMP85 REMARK 900 RELATED ID: EMD-68892 RELATED DB: EMDB REMARK 900 SYNECHOCOCCUS ELONGATUS PCC7942 SEOMP85 DBREF 22UH A 119 721 UNP Q31PR1 Q31PR1_SYNE7 119 721 SEQRES 1 A 603 VAL SER GLU VAL GLN ILE VAL GLY VAL ALA GLY ASN PRO SEQRES 2 A 603 ASP GLU ALA GLN LEU LEU ASP ALA ILE TYR GLY ALA ILE SEQRES 3 A 603 ARG THR GLN ALA GLY ALA THR SER THR ARG THR GLN LEU SEQRES 4 A 603 GLN ASN ASP VAL ASN ALA ILE PHE GLY THR GLY LEU PHE SEQRES 5 A 603 SER ASN VAL GLN VAL LEU PRO GLU ASP THR PRO LEU GLY SEQRES 6 A 603 VAL GLN ILE THR PHE VAL VAL GLU PRO ASN PRO VAL LEU SEQRES 7 A 603 SER LYS ILE GLU LEU ASP GLY ALA ARG VAL LEU PRO ASP SEQRES 8 A 603 SER VAL ILE GLN GLU THR PHE LYS ASP ASP TYR GLY LYS SEQRES 9 A 603 ILE LEU ASN LEU GLN THR LEU GLN ALA ARG ILE ARG THR SEQRES 10 A 603 LEU ASN THR TRP TYR ARG GLU ASN GLY TYR VAL LEU ALA SEQRES 11 A 603 GLN VAL VAL ASP ALA SER ARG ILE SER PRO ASN GLY GLU SEQRES 12 A 603 VAL THR LEU ARG VAL ALA GLU GLY VAL ILE SER GLU LEU SEQRES 13 A 603 ILE VAL ARG PHE GLN ASN ALA GLU GLY ARG SER THR ASP SEQRES 14 A 603 GLU GLU GLY ASN PRO ILE ARG GLY LYS THR ARG PRO PHE SEQRES 15 A 603 ILE VAL THR ARG GLU TYR SER PHE LYS GLU GLY ASP VAL SEQRES 16 A 603 PHE ASN ARG PRO GLN ALA GLU ALA GLY LEU ARG ARG ILE SEQRES 17 A 603 PHE GLY LEU GLY LEU PHE SER ASP VAL ARG LEU ASN LEU SEQRES 18 A 603 GLU PRO ASP PRO ARG ASP PRO THR LYS VAL VAL VAL VAL SEQRES 19 A 603 THR ASN VAL GLN GLU SER SER THR GLY ASN PHE SER ALA SEQRES 20 A 603 GLY VAL GLY PHE SER ASP ALA SER GLY LEU PHE GLY THR SEQRES 21 A 603 ILE GLY LEU GLN GLU GLN ASN PHE GLY GLY ASN ASN GLN SEQRES 22 A 603 LYS LEU GLY PHE GLN LEU SER VAL GLY GLN ARG GLN ALA SEQRES 23 A 603 LEU PHE ASP ILE SER PHE SER ASP PRO TRP ILE ALA GLY SEQRES 24 A 603 ASP PRO PHE ARG SER SER TYR SER VAL ASN VAL PHE ARG SEQRES 25 A 603 SER ALA GLU LEU ALA LEU GLN PHE THR ASN GLY PRO ILE SEQRES 26 A 603 ASP VAL ASN LEU PRO ASN GLY ASN SER ILE ILE THR GLN SEQRES 27 A 603 ARG THR GLY THR GLN ILE LEU PHE THR ARG PRO GLN ALA SEQRES 28 A 603 ASP PRO TYR THR ARG PRO GLU TRP THR LEU PHE GLY GLY SEQRES 29 A 603 VAL SER PHE ASN VAL VAL ASP ILE THR ASP ILE ASN GLY SEQRES 30 A 603 ASN ALA PHE ALA GLN ASP GLU PHE GLY ASN PRO LEU THR SEQRES 31 A 603 ALA SER GLY GLY SER GLN ASP THR LEU PHE GLY LEU ILE SEQRES 32 A 603 PHE GLY ALA VAL ARG ASP THR ARG ASP ASN VAL ALA THR SEQRES 33 A 603 PRO THR ARG GLY SER LEU PHE ARG PHE ASN VAL ASP GLN SEQRES 34 A 603 PHE LEU PRO ILE THR ALA ASN GLY VAL PHE TYR ASN ARG SEQRES 35 A 603 ILE ARG ALA GLY TYR SER PHE TYR VAL PRO ILE ARG LEU SEQRES 36 A 603 LEU ARG PHE GLN GLU GLY CYS ARG LYS ASP ASN PRO THR SEQRES 37 A 603 ALA GLU GLU CYS PRO GLN THR LEU ALA PHE ASN ILE GLN SEQRES 38 A 603 ALA GLY THR ALA LEU GLY ASN LEU PRO PRO TYR GLU ALA SEQRES 39 A 603 PHE CYS ILE GLY GLY VAL ASN THR VAL ARG GLY TYR GLU SEQRES 40 A 603 GLU CYS GLY LEU ALA SER GLY ARG SER PHE VAL VAL ALA SEQRES 41 A 603 SER ALA GLU TYR ARG PHE PRO ILE ILE SER GLN PHE LEU SEQRES 42 A 603 GLY GLY ALA LEU PHE ALA ASP ALA GLY THR SER LEU GLY SEQRES 43 A 603 SER ASP SER ALA VAL ILE GLY ALA PRO ALA VAL ILE ARG SEQRES 44 A 603 GLY LYS PRO GLY GLY GLY VAL GLY TYR GLY PHE GLY VAL SEQRES 45 A 603 ARG ILE ALA THR PRO VAL GLY PRO VAL ARG LEU ASP LEU SEQRES 46 A 603 GLY PHE THR PRO ASP GLN GLY ASN ARG ILE GLN PHE ALA SEQRES 47 A 603 ILE GLY GLU LYS PHE HELIX 1 AA1 ASP A 132 GLY A 142 1 11 HELIX 2 AA2 THR A 153 PHE A 165 1 13 HELIX 3 AA3 ASN A 225 ASN A 243 1 19 HELIX 4 AA4 THR A 286 ASN A 291 1 6 HELIX 5 AA5 ARG A 298 GLU A 305 1 8 HELIX 6 AA6 ASN A 315 GLY A 328 1 14 HELIX 7 AA7 LEU A 436 THR A 439 5 4 HELIX 8 AA8 PRO A 608 ALA A 612 5 5 HELIX 9 AA9 SER A 665 VAL A 669 5 5 SHEET 1 AA1 3 VAL A 122 GLN A 123 0 SHEET 2 AA1 3 ILE A 186 THR A 187 1 O ILE A 186 N GLN A 123 SHEET 3 AA1 3 LEU A 176 PRO A 177 -1 N LEU A 176 O THR A 187 SHEET 1 AA2 3 LYS A 198 GLU A 200 0 SHEET 2 AA2 3 VAL A 262 VAL A 266 1 O VAL A 262 N ILE A 199 SHEET 3 AA2 3 ALA A 253 ILE A 256 -1 N SER A 254 O ARG A 265 SHEET 1 AA3 3 VAL A 270 ARG A 277 0 SHEET 2 AA3 3 LYS A 348 GLU A 357 1 O THR A 353 N ILE A 275 SHEET 3 AA3 3 PHE A 332 PRO A 341 -1 N ARG A 336 O ASN A 354 SHEET 1 AA416 ASN A 362 GLY A 368 0 SHEET 2 AA416 PHE A 376 GLU A 383 -1 O GLN A 382 N ASN A 362 SHEET 3 AA416 LYS A 392 VAL A 399 -1 O LEU A 397 N ILE A 379 SHEET 4 AA416 GLN A 403 PRO A 413 -1 O SER A 409 N GLY A 394 SHEET 5 AA416 SER A 423 LEU A 434 -1 O ALA A 432 N ALA A 404 SHEET 6 AA416 ILE A 454 PRO A 467 -1 O ARG A 457 N SER A 431 SHEET 7 AA416 THR A 478 THR A 491 -1 O VAL A 487 N THR A 458 SHEET 8 AA416 ASP A 515 ASP A 527 -1 O GLY A 519 N SER A 484 SHEET 9 AA416 GLY A 538 LEU A 549 -1 O VAL A 545 N PHE A 522 SHEET 10 AA416 TYR A 558 TYR A 568 -1 O TYR A 568 N GLY A 538 SHEET 11 AA416 PHE A 596 GLY A 605 -1 O ILE A 598 N TYR A 565 SHEET 12 AA416 SER A 634 PHE A 644 -1 O PHE A 635 N GLY A 601 SHEET 13 AA416 GLY A 653 THR A 661 -1 O ALA A 659 N ALA A 638 SHEET 14 AA416 GLY A 682 THR A 694 -1 O GLY A 683 N GLY A 660 SHEET 15 AA416 GLY A 697 THR A 706 -1 O VAL A 699 N ILE A 692 SHEET 16 AA416 GLY A 710 ILE A 717 -1 O ARG A 712 N GLY A 704 SHEET 1 AA5 2 PHE A 613 ILE A 615 0 SHEET 2 AA5 2 ALA A 630 GLY A 632 -1 O GLY A 632 N PHE A 613 SSBOND 1 CYS A 580 CYS A 590 1555 1555 2.03 SSBOND 2 CYS A 614 CYS A 627 1555 1555 2.03 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 ORIGX1 1.000000 0.000000 0.000000 0.00000 ORIGX2 0.000000 1.000000 0.000000 0.00000 ORIGX3 0.000000 0.000000 1.000000 0.00000 SCALE1 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000 CONECT 3560 3639 CONECT 3639 3560 CONECT 3817 3913 CONECT 3913 3817 MASTER 176 0 0 9 27 0 0 6 4587 1 4 47 END