HEADER MEMBRANE PROTEIN 26-NOV-24 9KQJ TITLE CRYO-EM STRUCTURE OF PSS1 WITH CALCIUM COMPND MOL_ID: 1; COMPND 2 MOLECULE: PHOSPHATIDYLSERINE SYNTHASE 1; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: PSS-1,PTDSER SYNTHASE 1,SERINE-EXCHANGE ENZYME I; COMPND 5 EC: 2.7.8.29; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: PTDSS1, KIAA0024, PSSA; SOURCE 6 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 9606 KEYWDS PHOSPHATIDYLSERINE SYNTHASE, ER MEMBRANE PROTEIN, INTEGRAL MEMBRANE KEYWDS 2 PROTEIN, TRANSMEMBRANE ENZYME, PS, MEMBRANE PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR Y.NING,J.YU,J.GE REVDAT 1 02-APR-25 9KQJ 0 JRNL AUTH Y.NING,R.XU,J.YU,J.GE JRNL TITL STRUCTURAL BASIS FOR CATALYTIC MECHANISM OF HUMAN JRNL TITL 2 PHOSPHATIDYLSERINE SYNTHASE 1. JRNL REF CELL DISCOV V. 11 20 2025 JRNL REFN ESSN 2056-5968 JRNL PMID 40044636 JRNL DOI 10.1038/S41421-025-00775-3 REMARK 2 REMARK 2 RESOLUTION. 2.95 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : PHENIX REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : NULL REMARK 3 REFINEMENT SPACE : NULL REMARK 3 REFINEMENT PROTOCOL : NULL 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) : 2.950 REMARK 3 NUMBER OF PARTICLES : 455789 REMARK 3 CTF CORRECTION METHOD : NONE REMARK 3 REMARK 3 EM RECONSTRUCTION MAGNIFICATION CALIBRATION: NULL REMARK 3 REMARK 3 OTHER DETAILS: NULL REMARK 4 REMARK 4 9KQJ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 29-NOV-24. REMARK 100 THE DEPOSITION ID IS D_1300054108. 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 : CRYOEM STRUCTURE OF PSS1 DIMER REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : NULL 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 (6K X 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 1000.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2000.00 REMARK 245 MINIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 MAXIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 NOMINAL CS : NULL REMARK 245 IMAGING MODE : BRIGHT FIELD REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 4800.00 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: DIMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B 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 MET A 1 REMARK 465 ALA A 2 REMARK 465 SER A 3 REMARK 465 CYS A 4 REMARK 465 VAL A 5 REMARK 465 GLY A 6 REMARK 465 SER A 7 REMARK 465 ARG A 8 REMARK 465 THR A 9 REMARK 465 LEU A 10 REMARK 465 SER A 11 REMARK 465 LYS A 12 REMARK 465 ASP A 13 REMARK 465 THR A 141 REMARK 465 ARG A 142 REMARK 465 GLU A 143 REMARK 465 ALA A 144 REMARK 465 ASP A 145 REMARK 465 VAL A 146 REMARK 465 MET A 147 REMARK 465 GLU A 148 REMARK 465 TYR A 149 REMARK 465 ALA A 150 REMARK 465 VAL A 151 REMARK 465 ASN A 152 REMARK 465 CYS A 153 REMARK 465 HIS A 154 REMARK 465 VAL A 155 REMARK 465 ILE A 156 REMARK 465 THR A 157 REMARK 465 TRP A 158 REMARK 465 TYR A 409 REMARK 465 GLY A 410 REMARK 465 HIS A 411 REMARK 465 ARG A 412 REMARK 465 GLU A 413 REMARK 465 LYS A 414 REMARK 465 THR A 415 REMARK 465 TYR A 416 REMARK 465 SER A 417 REMARK 465 GLU A 418 REMARK 465 CYS A 419 REMARK 465 GLU A 420 REMARK 465 ASP A 421 REMARK 465 GLY A 422 REMARK 465 THR A 423 REMARK 465 TYR A 424 REMARK 465 SER A 425 REMARK 465 PRO A 426 REMARK 465 GLU A 427 REMARK 465 ILE A 428 REMARK 465 SER A 429 REMARK 465 TRP A 430 REMARK 465 HIS A 431 REMARK 465 HIS A 432 REMARK 465 ARG A 433 REMARK 465 LYS A 434 REMARK 465 GLY A 435 REMARK 465 THR A 436 REMARK 465 LYS A 437 REMARK 465 GLY A 438 REMARK 465 SER A 439 REMARK 465 GLU A 440 REMARK 465 ASP A 441 REMARK 465 SER A 442 REMARK 465 PRO A 443 REMARK 465 PRO A 444 REMARK 465 LYS A 445 REMARK 465 HIS A 446 REMARK 465 ALA A 447 REMARK 465 GLY A 448 REMARK 465 ASN A 449 REMARK 465 ASN A 450 REMARK 465 GLU A 451 REMARK 465 SER A 452 REMARK 465 HIS A 453 REMARK 465 SER A 454 REMARK 465 SER A 455 REMARK 465 ARG A 456 REMARK 465 ARG A 457 REMARK 465 ARG A 458 REMARK 465 ASN A 459 REMARK 465 ARG A 460 REMARK 465 HIS A 461 REMARK 465 SER A 462 REMARK 465 LYS A 463 REMARK 465 SER A 464 REMARK 465 LYS A 465 REMARK 465 VAL A 466 REMARK 465 THR A 467 REMARK 465 ASN A 468 REMARK 465 GLY A 469 REMARK 465 VAL A 470 REMARK 465 GLY A 471 REMARK 465 LYS A 472 REMARK 465 LYS A 473 REMARK 465 MET B 1 REMARK 465 ALA B 2 REMARK 465 SER B 3 REMARK 465 CYS B 4 REMARK 465 VAL B 5 REMARK 465 GLY B 6 REMARK 465 SER B 7 REMARK 465 ARG B 8 REMARK 465 THR B 9 REMARK 465 LEU B 10 REMARK 465 SER B 11 REMARK 465 LYS B 12 REMARK 465 ASP B 13 REMARK 465 THR B 141 REMARK 465 ARG B 142 REMARK 465 GLU B 143 REMARK 465 ALA B 144 REMARK 465 ASP B 145 REMARK 465 VAL B 146 REMARK 465 MET B 147 REMARK 465 GLU B 148 REMARK 465 TYR B 149 REMARK 465 ALA B 150 REMARK 465 VAL B 151 REMARK 465 ASN B 152 REMARK 465 CYS B 153 REMARK 465 HIS B 154 REMARK 465 VAL B 155 REMARK 465 ILE B 156 REMARK 465 THR B 157 REMARK 465 TRP B 158 REMARK 465 TYR B 409 REMARK 465 GLY B 410 REMARK 465 HIS B 411 REMARK 465 ARG B 412 REMARK 465 GLU B 413 REMARK 465 LYS B 414 REMARK 465 THR B 415 REMARK 465 TYR B 416 REMARK 465 SER B 417 REMARK 465 GLU B 418 REMARK 465 CYS B 419 REMARK 465 GLU B 420 REMARK 465 ASP B 421 REMARK 465 GLY B 422 REMARK 465 THR B 423 REMARK 465 TYR B 424 REMARK 465 SER B 425 REMARK 465 PRO B 426 REMARK 465 GLU B 427 REMARK 465 ILE B 428 REMARK 465 SER B 429 REMARK 465 TRP B 430 REMARK 465 HIS B 431 REMARK 465 HIS B 432 REMARK 465 ARG B 433 REMARK 465 LYS B 434 REMARK 465 GLY B 435 REMARK 465 THR B 436 REMARK 465 LYS B 437 REMARK 465 GLY B 438 REMARK 465 SER B 439 REMARK 465 GLU B 440 REMARK 465 ASP B 441 REMARK 465 SER B 442 REMARK 465 PRO B 443 REMARK 465 PRO B 444 REMARK 465 LYS B 445 REMARK 465 HIS B 446 REMARK 465 ALA B 447 REMARK 465 GLY B 448 REMARK 465 ASN B 449 REMARK 465 ASN B 450 REMARK 465 GLU B 451 REMARK 465 SER B 452 REMARK 465 HIS B 453 REMARK 465 SER B 454 REMARK 465 SER B 455 REMARK 465 ARG B 456 REMARK 465 ARG B 457 REMARK 465 ARG B 458 REMARK 465 ASN B 459 REMARK 465 ARG B 460 REMARK 465 HIS B 461 REMARK 465 SER B 462 REMARK 465 LYS B 463 REMARK 465 SER B 464 REMARK 465 LYS B 465 REMARK 465 VAL B 466 REMARK 465 THR B 467 REMARK 465 ASN B 468 REMARK 465 GLY B 469 REMARK 465 VAL B 470 REMARK 465 GLY B 471 REMARK 465 LYS B 472 REMARK 465 LYS B 473 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 O TYR B 55 OG1 THR B 59 2.10 REMARK 500 O TYR A 55 OG1 THR A 59 2.10 REMARK 500 O GLY B 289 OH TYR B 338 2.18 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 THR A 94 26.97 -140.37 REMARK 500 ALA A 211 53.71 -91.51 REMARK 500 ILE A 222 -57.82 -120.91 REMARK 500 LEU A 224 -65.07 -91.29 REMARK 500 ALA A 248 -169.05 -77.87 REMARK 500 ALA B 211 53.70 -91.61 REMARK 500 LEU B 224 -60.81 -93.45 REMARK 500 ALA B 248 -168.82 -77.88 REMARK 500 REMARK 500 REMARK: NULL REMARK 610 REMARK 610 MISSING HETEROATOM REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 610 I=INSERTION CODE): REMARK 610 M RES C SSEQI REMARK 610 LBN A 504 REMARK 610 LBN A 508 REMARK 610 T7X A 510 REMARK 610 LBN A 511 REMARK 610 T7X B 501 REMARK 610 LBN B 502 REMARK 610 LBN B 506 REMARK 610 LBN B 510 REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 509 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 197 OE1 REMARK 620 2 GLU A 197 OE2 44.3 REMARK 620 3 GLU A 200 OE1 116.4 89.4 REMARK 620 4 GLN A 217 OE1 109.3 65.9 64.4 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA B 511 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU B 197 OE1 REMARK 620 2 GLU B 197 OE2 49.5 REMARK 620 3 GLU B 200 OE1 81.9 112.7 REMARK 620 N 1 2 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-62506 RELATED DB: EMDB REMARK 900 CRYO-EM STRUCTURE OF PSS1 WITH CALCIUM DBREF 9KQJ A 1 473 UNP P48651 PTSS1_HUMAN 1 473 DBREF 9KQJ B 1 473 UNP P48651 PTSS1_HUMAN 1 473 SEQRES 1 A 473 MET ALA SER CYS VAL GLY SER ARG THR LEU SER LYS ASP SEQRES 2 A 473 ASP VAL ASN TYR LYS MET HIS PHE ARG MET ILE ASN GLU SEQRES 3 A 473 GLN GLN VAL GLU ASP ILE THR ILE ASP PHE PHE TYR ARG SEQRES 4 A 473 PRO HIS THR ILE THR LEU LEU SER PHE THR ILE VAL SER SEQRES 5 A 473 LEU MET TYR PHE ALA PHE THR ARG ASP ASP SER VAL PRO SEQRES 6 A 473 GLU ASP ASN ILE TRP ARG GLY ILE LEU SER VAL ILE PHE SEQRES 7 A 473 PHE PHE LEU ILE ILE SER VAL LEU ALA PHE PRO ASN GLY SEQRES 8 A 473 PRO PHE THR ARG PRO HIS PRO ALA LEU TRP ARG MET VAL SEQRES 9 A 473 PHE GLY LEU SER VAL LEU TYR PHE LEU PHE LEU VAL PHE SEQRES 10 A 473 LEU LEU PHE LEU ASN PHE GLU GLN VAL LYS SER LEU MET SEQRES 11 A 473 TYR TRP LEU ASP PRO ASN LEU ARG TYR ALA THR ARG GLU SEQRES 12 A 473 ALA ASP VAL MET GLU TYR ALA VAL ASN CYS HIS VAL ILE SEQRES 13 A 473 THR TRP GLU ARG ILE ILE SER HIS PHE ASP ILE PHE ALA SEQRES 14 A 473 PHE GLY HIS PHE TRP GLY TRP ALA MET LYS ALA LEU LEU SEQRES 15 A 473 ILE ARG SER TYR GLY LEU CYS TRP THR ILE SER ILE THR SEQRES 16 A 473 TRP GLU LEU THR GLU LEU PHE PHE MET HIS LEU LEU PRO SEQRES 17 A 473 ASN PHE ALA GLU CYS TRP TRP ASP GLN VAL ILE LEU ASP SEQRES 18 A 473 ILE LEU LEU CYS ASN GLY GLY GLY ILE TRP LEU GLY MET SEQRES 19 A 473 VAL VAL CYS ARG PHE LEU GLU MET ARG THR TYR HIS TRP SEQRES 20 A 473 ALA SER PHE LYS ASP ILE HIS THR THR THR GLY LYS ILE SEQRES 21 A 473 LYS ARG ALA VAL LEU GLN PHE THR PRO ALA SER TRP THR SEQRES 22 A 473 TYR VAL ARG TRP PHE ASP PRO LYS SER SER PHE GLN ARG SEQRES 23 A 473 VAL ALA GLY VAL TYR LEU PHE MET ILE ILE TRP GLN LEU SEQRES 24 A 473 THR GLU LEU ASN THR PHE PHE LEU LYS HIS ILE PHE VAL SEQRES 25 A 473 PHE GLN ALA SER HIS PRO LEU SER TRP GLY ARG ILE LEU SEQRES 26 A 473 PHE ILE GLY GLY ILE THR ALA PRO THR VAL ARG GLN TYR SEQRES 27 A 473 TYR ALA TYR LEU THR ASP THR GLN CYS LYS ARG VAL GLY SEQRES 28 A 473 THR GLN CYS TRP VAL PHE GLY VAL ILE GLY PHE LEU GLU SEQRES 29 A 473 ALA ILE VAL CYS ILE LYS PHE GLY GLN ASP LEU PHE SER SEQRES 30 A 473 LYS THR GLN ILE LEU TYR VAL VAL LEU TRP LEU LEU CYS SEQRES 31 A 473 VAL ALA PHE THR THR PHE LEU CYS LEU TYR GLY MET ILE SEQRES 32 A 473 TRP TYR ALA GLU HIS TYR GLY HIS ARG GLU LYS THR TYR SEQRES 33 A 473 SER GLU CYS GLU ASP GLY THR TYR SER PRO GLU ILE SER SEQRES 34 A 473 TRP HIS HIS ARG LYS GLY THR LYS GLY SER GLU ASP SER SEQRES 35 A 473 PRO PRO LYS HIS ALA GLY ASN ASN GLU SER HIS SER SER SEQRES 36 A 473 ARG ARG ARG ASN ARG HIS SER LYS SER LYS VAL THR ASN SEQRES 37 A 473 GLY VAL GLY LYS LYS SEQRES 1 B 473 MET ALA SER CYS VAL GLY SER ARG THR LEU SER LYS ASP SEQRES 2 B 473 ASP VAL ASN TYR LYS MET HIS PHE ARG MET ILE ASN GLU SEQRES 3 B 473 GLN GLN VAL GLU ASP ILE THR ILE ASP PHE PHE TYR ARG SEQRES 4 B 473 PRO HIS THR ILE THR LEU LEU SER PHE THR ILE VAL SER SEQRES 5 B 473 LEU MET TYR PHE ALA PHE THR ARG ASP ASP SER VAL PRO SEQRES 6 B 473 GLU ASP ASN ILE TRP ARG GLY ILE LEU SER VAL ILE PHE SEQRES 7 B 473 PHE PHE LEU ILE ILE SER VAL LEU ALA PHE PRO ASN GLY SEQRES 8 B 473 PRO PHE THR ARG PRO HIS PRO ALA LEU TRP ARG MET VAL SEQRES 9 B 473 PHE GLY LEU SER VAL LEU TYR PHE LEU PHE LEU VAL PHE SEQRES 10 B 473 LEU LEU PHE LEU ASN PHE GLU GLN VAL LYS SER LEU MET SEQRES 11 B 473 TYR TRP LEU ASP PRO ASN LEU ARG TYR ALA THR ARG GLU SEQRES 12 B 473 ALA ASP VAL MET GLU TYR ALA VAL ASN CYS HIS VAL ILE SEQRES 13 B 473 THR TRP GLU ARG ILE ILE SER HIS PHE ASP ILE PHE ALA SEQRES 14 B 473 PHE GLY HIS PHE TRP GLY TRP ALA MET LYS ALA LEU LEU SEQRES 15 B 473 ILE ARG SER TYR GLY LEU CYS TRP THR ILE SER ILE THR SEQRES 16 B 473 TRP GLU LEU THR GLU LEU PHE PHE MET HIS LEU LEU PRO SEQRES 17 B 473 ASN PHE ALA GLU CYS TRP TRP ASP GLN VAL ILE LEU ASP SEQRES 18 B 473 ILE LEU LEU CYS ASN GLY GLY GLY ILE TRP LEU GLY MET SEQRES 19 B 473 VAL VAL CYS ARG PHE LEU GLU MET ARG THR TYR HIS TRP SEQRES 20 B 473 ALA SER PHE LYS ASP ILE HIS THR THR THR GLY LYS ILE SEQRES 21 B 473 LYS ARG ALA VAL LEU GLN PHE THR PRO ALA SER TRP THR SEQRES 22 B 473 TYR VAL ARG TRP PHE ASP PRO LYS SER SER PHE GLN ARG SEQRES 23 B 473 VAL ALA GLY VAL TYR LEU PHE MET ILE ILE TRP GLN LEU SEQRES 24 B 473 THR GLU LEU ASN THR PHE PHE LEU LYS HIS ILE PHE VAL SEQRES 25 B 473 PHE GLN ALA SER HIS PRO LEU SER TRP GLY ARG ILE LEU SEQRES 26 B 473 PHE ILE GLY GLY ILE THR ALA PRO THR VAL ARG GLN TYR SEQRES 27 B 473 TYR ALA TYR LEU THR ASP THR GLN CYS LYS ARG VAL GLY SEQRES 28 B 473 THR GLN CYS TRP VAL PHE GLY VAL ILE GLY PHE LEU GLU SEQRES 29 B 473 ALA ILE VAL CYS ILE LYS PHE GLY GLN ASP LEU PHE SER SEQRES 30 B 473 LYS THR GLN ILE LEU TYR VAL VAL LEU TRP LEU LEU CYS SEQRES 31 B 473 VAL ALA PHE THR THR PHE LEU CYS LEU TYR GLY MET ILE SEQRES 32 B 473 TRP TYR ALA GLU HIS TYR GLY HIS ARG GLU LYS THR TYR SEQRES 33 B 473 SER GLU CYS GLU ASP GLY THR TYR SER PRO GLU ILE SER SEQRES 34 B 473 TRP HIS HIS ARG LYS GLY THR LYS GLY SER GLU ASP SER SEQRES 35 B 473 PRO PRO LYS HIS ALA GLY ASN ASN GLU SER HIS SER SER SEQRES 36 B 473 ARG ARG ARG ASN ARG HIS SER LYS SER LYS VAL THR ASN SEQRES 37 B 473 GLY VAL GLY LYS LYS HET PSF A 501 30 HET PSF A 502 30 HET LBN A 503 52 HET LBN A 504 32 HET D12 A 505 12 HET C14 A 506 14 HET LBN A 507 52 HET LBN A 508 46 HET CA A 509 1 HET T7X A 510 50 HET LBN A 511 38 HET T7X B 501 50 HET LBN B 502 38 HET PSF B 503 30 HET PSF B 504 30 HET LBN B 505 52 HET LBN B 506 32 HET D12 B 507 12 HET C14 B 508 14 HET LBN B 509 52 HET LBN B 510 46 HET CA B 511 1 HETNAM PSF 1,2-DICAPROYL-SN-PHOSPHATIDYL-L-SERINE HETNAM LBN 1-PALMITOYL-2-OLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE HETNAM D12 DODECANE HETNAM C14 TETRADECANE HETNAM CA CALCIUM ION HETNAM T7X PHOSPHATIDYLINOSITOL HETSYN PSF PHOSPHATIDYLSERINE HETSYN LBN (2R)-2-[(9Z)-9-OCTADECENOYLOXY]-3-(PALMITOYLOXY)PROPYL HETSYN 2 LBN 2-(TRIMETHYLAMMONIO)ETHYL PHOSPHATE FORMUL 3 PSF 4(C18 H34 N O10 P) FORMUL 5 LBN 10(C42 H82 N O8 P) FORMUL 7 D12 2(C12 H26) FORMUL 8 C14 2(C14 H30) FORMUL 11 CA 2(CA 2+) FORMUL 12 T7X 2(C47 H83 O13 P) HELIX 1 AA1 ASP A 14 ARG A 22 1 9 HELIX 2 AA2 ILE A 34 ARG A 39 5 6 HELIX 3 AA3 HIS A 41 THR A 59 1 19 HELIX 4 AA4 VAL A 64 PHE A 88 1 25 HELIX 5 AA5 HIS A 97 LEU A 119 1 23 HELIX 6 AA6 ASN A 122 ASP A 134 1 13 HELIX 7 AA7 PRO A 135 TYR A 139 5 5 HELIX 8 AA8 ARG A 160 PHE A 165 1 6 HELIX 9 AA9 ASP A 166 ARG A 184 1 19 HELIX 10 AB1 SER A 185 PHE A 203 1 19 HELIX 11 AB2 CYS A 213 LEU A 220 1 8 HELIX 12 AB3 LEU A 224 MET A 242 1 19 HELIX 13 AB4 THR A 255 LEU A 265 1 11 HELIX 14 AB5 GLN A 266 THR A 268 5 3 HELIX 15 AB6 SER A 283 PHE A 311 1 29 HELIX 16 AB7 HIS A 317 ASP A 344 1 28 HELIX 17 AB8 GLY A 351 GLY A 372 1 22 HELIX 18 AB9 ILE A 381 HIS A 408 1 28 HELIX 19 AC1 VAL B 15 ASN B 25 1 11 HELIX 20 AC2 ILE B 43 THR B 59 1 17 HELIX 21 AC3 VAL B 64 PHE B 88 1 25 HELIX 22 AC4 HIS B 97 LEU B 119 1 23 HELIX 23 AC5 ASN B 122 ASP B 134 1 13 HELIX 24 AC6 PRO B 135 TYR B 139 5 5 HELIX 25 AC7 ARG B 160 PHE B 165 1 6 HELIX 26 AC8 ASP B 166 ARG B 184 1 19 HELIX 27 AC9 SER B 185 PHE B 203 1 19 HELIX 28 AD1 CYS B 213 ILE B 219 1 7 HELIX 29 AD2 ILE B 219 LEU B 224 1 6 HELIX 30 AD3 LEU B 224 MET B 242 1 19 HELIX 31 AD4 THR B 255 LEU B 265 1 11 HELIX 32 AD5 GLN B 266 THR B 268 5 3 HELIX 33 AD6 SER B 283 PHE B 311 1 29 HELIX 34 AD7 HIS B 317 ASP B 344 1 28 HELIX 35 AD8 GLY B 351 GLY B 372 1 22 HELIX 36 AD9 ILE B 381 HIS B 408 1 28 LINK OE1 GLU A 197 CA CA A 509 1555 1555 3.13 LINK OE2 GLU A 197 CA CA A 509 1555 1555 2.39 LINK OE1 GLU A 200 CA CA A 509 1555 1555 2.34 LINK OE1 GLN A 217 CA CA A 509 1555 1555 2.81 LINK OE1 GLU B 197 CA CA B 511 1555 1555 2.32 LINK OE2 GLU B 197 CA CA B 511 1555 1555 2.81 LINK OE1 GLU B 200 CA CA B 511 1555 1555 2.41 CISPEP 1 ARG A 95 PRO A 96 0 -6.39 CISPEP 2 ARG B 95 PRO B 96 0 -5.62 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