HEADER MEMBRANE PROTEIN 29-SEP-24 9JRK TITLE OUTWARD-OPEN HSLC19A1 + MTX COMPND MOL_ID: 1; COMPND 2 MOLECULE: SOLUBLE CYTOCHROME B562,REDUCED FOLATE TRANSPORTER,FUSION COMPND 3 PROTEIN; COMPND 4 CHAIN: A; COMPND 5 SYNONYM: CYTOCHROME B-562,FOLT,CYCLIC DINUCLEOTIDE:ANION ANTIPORTER COMPND 6 SLC19A1,FOLATE:ANION ANTIPORTER SLC19A1,INTESTINAL FOLATE CARRIER 1, COMPND 7 IFC-1,PLACENTAL FOLATE TRANSPORTER,REDUCED FOLATE CARRIER PROTEIN, COMPND 8 RFC,HRFC,REDUCED FOLATE TRANSPORTER 1,RFT-1,SOLUTE CARRIER FAMILY 19 COMPND 9 MEMBER 1,HSLC19A1; COMPND 10 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI, HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 562, 9606; SOURCE 5 GENE: CYBC, SLC19A1, FLOT1, RFC1; SOURCE 6 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 7 EXPRESSION_SYSTEM_COMMON: HUMAN; SOURCE 8 EXPRESSION_SYSTEM_TAXID: 9606 KEYWDS OUTWARD-OPEN HSLC19A1, MEMBRANE PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR Q.X.ZHANG,K.X.LIU,P.GAO REVDAT 1 26-FEB-25 9JRK 0 JRNL AUTH Q.X.ZHANG,X.Y.ZHANG,K.X.LIU,P.GAO JRNL TITL MOLECULAR BASIS OF SLC19A1-MEDIATED FOLATE AND CYCLIC JRNL TITL 2 DINUCLEOTIDE TRANSPORT JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 3.44 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : NULL 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) : 3.440 REMARK 3 NUMBER OF PARTICLES : 97106 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 9JRK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBC ON 01-OCT-24. REMARK 100 THE DEPOSITION ID IS D_1300051893. 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 : OUTWARD-OPEN HSLC19A1 + MTX 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 : FEI TALOS ARCTICA REMARK 245 DETECTOR TYPE : GATAN K2 QUANTUM (4K X 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 500.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 1000.00 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) : 6000.00 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) : 200 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 MET A -83 REMARK 465 ALA A -82 REMARK 465 ASP A -81 REMARK 465 LEU A -80 REMARK 465 GLU A -79 REMARK 465 ASP A -78 REMARK 465 ASN A -77 REMARK 465 TRP A -76 REMARK 465 GLU A -75 REMARK 465 THR A -74 REMARK 465 LEU A -73 REMARK 465 ASN A -72 REMARK 465 ASP A -71 REMARK 465 ASN A -70 REMARK 465 LEU A -69 REMARK 465 LYS A -68 REMARK 465 VAL A -67 REMARK 465 ILE A -66 REMARK 465 GLU A -65 REMARK 465 LYS A -64 REMARK 465 ALA A -63 REMARK 465 ASP A -62 REMARK 465 ASN A -61 REMARK 465 ALA A -60 REMARK 465 ALA A -59 REMARK 465 GLN A -58 REMARK 465 VAL A -57 REMARK 465 LYS A -56 REMARK 465 ASP A -55 REMARK 465 ALA A -54 REMARK 465 LEU A -53 REMARK 465 THR A -52 REMARK 465 LYS A -51 REMARK 465 MET A -50 REMARK 465 ARG A -49 REMARK 465 ALA A -48 REMARK 465 ALA A -47 REMARK 465 ALA A -46 REMARK 465 LEU A -45 REMARK 465 ASP A -44 REMARK 465 ALA A -43 REMARK 465 GLN A -42 REMARK 465 LYS A -41 REMARK 465 ALA A -40 REMARK 465 THR A -39 REMARK 465 PRO A -38 REMARK 465 PRO A -37 REMARK 465 LYS A -36 REMARK 465 LEU A -35 REMARK 465 GLU A -34 REMARK 465 ASP A -33 REMARK 465 LYS A -32 REMARK 465 SER A -31 REMARK 465 PRO A -30 REMARK 465 ASP A -29 REMARK 465 SER A -28 REMARK 465 PRO A -27 REMARK 465 GLU A -26 REMARK 465 MET A -25 REMARK 465 LYS A -24 REMARK 465 ASP A -23 REMARK 465 PHE A -22 REMARK 465 ARG A -21 REMARK 465 HIS A -20 REMARK 465 GLY A -19 REMARK 465 PHE A -18 REMARK 465 ASP A -17 REMARK 465 ILE A -16 REMARK 465 LEU A -15 REMARK 465 VAL A -14 REMARK 465 GLY A -13 REMARK 465 GLN A -12 REMARK 465 ILE A -11 REMARK 465 ASP A -10 REMARK 465 ASP A -9 REMARK 465 ALA A -8 REMARK 465 LEU A -7 REMARK 465 LYS A -6 REMARK 465 LEU A -5 REMARK 465 ALA A -4 REMARK 465 ASN A -3 REMARK 465 GLU A -2 REMARK 465 GLY A -1 REMARK 465 LYS A 0 REMARK 465 VAL A 1 REMARK 465 LYS A 2 REMARK 465 GLU A 3 REMARK 465 ALA A 4 REMARK 465 GLN A 5 REMARK 465 ALA A 6 REMARK 465 ALA A 7 REMARK 465 ALA A 8 REMARK 465 GLU A 9 REMARK 465 GLN A 10 REMARK 465 LEU A 11 REMARK 465 LYS A 12 REMARK 465 THR A 13 REMARK 465 THR A 14 REMARK 465 ARG A 15 REMARK 465 ASN A 16 REMARK 465 ALA A 17 REMARK 465 TYR A 18 REMARK 465 ILE A 19 REMARK 465 GLN A 20 REMARK 465 LYS A 21 REMARK 465 TYR A 22 REMARK 465 LEU A 23 REMARK 465 ARG A 208 REMARK 465 SER A 209 REMARK 465 LEU A 210 REMARK 465 PHE A 211 REMARK 465 PHE A 212 REMARK 465 ASN A 213 REMARK 465 ARG A 214 REMARK 465 ASP A 215 REMARK 465 ASP A 216 REMARK 465 ARG A 217 REMARK 465 GLY A 218 REMARK 465 ARG A 219 REMARK 465 CYS A 220 REMARK 465 GLU A 221 REMARK 465 THR A 222 REMARK 465 SER A 223 REMARK 465 ALA A 224 REMARK 465 SER A 225 REMARK 465 GLU A 226 REMARK 465 LEU A 227 REMARK 465 GLU A 228 REMARK 465 ARG A 229 REMARK 465 MET A 230 REMARK 465 ASN A 231 REMARK 465 PRO A 232 REMARK 465 GLY A 233 REMARK 465 PRO A 234 REMARK 465 GLY A 235 REMARK 465 GLY A 236 REMARK 465 LYS A 237 REMARK 465 LEU A 238 REMARK 465 GLY A 239 REMARK 465 HIS A 240 REMARK 465 ALA A 241 REMARK 465 LEU A 242 REMARK 465 ARG A 243 REMARK 465 VAL A 244 REMARK 465 ALA A 245 REMARK 465 CYS A 246 REMARK 465 GLY A 247 REMARK 465 ASP A 248 REMARK 465 ASP A 296 REMARK 465 PRO A 297 REMARK 465 THR A 298 REMARK 465 THR A 299 REMARK 465 ASN A 300 REMARK 465 SER A 301 REMARK 465 ALA A 302 REMARK 465 ALA A 458 REMARK 465 GLU A 459 REMARK 465 GLU A 460 REMARK 465 GLU A 461 REMARK 465 LYS A 462 REMARK 465 ARG A 463 REMARK 465 LYS A 464 REMARK 465 ALA A 465 REMARK 465 GLU A 466 REMARK 465 GLU A 467 REMARK 465 GLU A 468 REMARK 465 LYS A 469 REMARK 465 ARG A 470 REMARK 465 LYS A 471 REMARK 465 GLY A 472 REMARK 465 SER A 473 REMARK 465 GLY A 474 REMARK 465 SER A 475 REMARK 465 GLN A 476 REMARK 465 VAL A 477 REMARK 465 GLN A 478 REMARK 465 LEU A 479 REMARK 465 GLN A 480 REMARK 465 GLU A 481 REMARK 465 SER A 482 REMARK 465 GLY A 483 REMARK 465 GLY A 484 REMARK 465 GLY A 485 REMARK 465 LEU A 486 REMARK 465 VAL A 487 REMARK 465 GLN A 488 REMARK 465 PRO A 489 REMARK 465 GLY A 490 REMARK 465 GLY A 491 REMARK 465 SER A 492 REMARK 465 LEU A 493 REMARK 465 ARG A 494 REMARK 465 LEU A 495 REMARK 465 SER A 496 REMARK 465 CYS A 497 REMARK 465 ALA A 498 REMARK 465 ALA A 499 REMARK 465 SER A 500 REMARK 465 GLY A 501 REMARK 465 ARG A 502 REMARK 465 THR A 503 REMARK 465 ILE A 504 REMARK 465 SER A 505 REMARK 465 ARG A 506 REMARK 465 TYR A 507 REMARK 465 ALA A 508 REMARK 465 MET A 509 REMARK 465 SER A 510 REMARK 465 TRP A 511 REMARK 465 PHE A 512 REMARK 465 ARG A 513 REMARK 465 GLN A 514 REMARK 465 ALA A 515 REMARK 465 PRO A 516 REMARK 465 GLY A 517 REMARK 465 LYS A 518 REMARK 465 GLU A 519 REMARK 465 ARG A 520 REMARK 465 GLU A 521 REMARK 465 PHE A 522 REMARK 465 VAL A 523 REMARK 465 ALA A 524 REMARK 465 VAL A 525 REMARK 465 ALA A 526 REMARK 465 ARG A 527 REMARK 465 ARG A 528 REMARK 465 SER A 529 REMARK 465 GLY A 530 REMARK 465 ASP A 531 REMARK 465 GLY A 532 REMARK 465 ALA A 533 REMARK 465 PHE A 534 REMARK 465 TYR A 535 REMARK 465 ALA A 536 REMARK 465 ASP A 537 REMARK 465 SER A 538 REMARK 465 VAL A 539 REMARK 465 GLN A 540 REMARK 465 GLY A 541 REMARK 465 ARG A 542 REMARK 465 PHE A 543 REMARK 465 THR A 544 REMARK 465 VAL A 545 REMARK 465 SER A 546 REMARK 465 ARG A 547 REMARK 465 ASP A 548 REMARK 465 ASP A 549 REMARK 465 ALA A 550 REMARK 465 LYS A 551 REMARK 465 ASN A 552 REMARK 465 THR A 553 REMARK 465 VAL A 554 REMARK 465 TYR A 555 REMARK 465 LEU A 556 REMARK 465 GLN A 557 REMARK 465 MET A 558 REMARK 465 ASN A 559 REMARK 465 SER A 560 REMARK 465 LEU A 561 REMARK 465 LYS A 562 REMARK 465 PRO A 563 REMARK 465 GLU A 564 REMARK 465 ASP A 565 REMARK 465 THR A 566 REMARK 465 ALA A 567 REMARK 465 VAL A 568 REMARK 465 TYR A 569 REMARK 465 TYR A 570 REMARK 465 CYS A 571 REMARK 465 ALA A 572 REMARK 465 ILE A 573 REMARK 465 ASP A 574 REMARK 465 SER A 575 REMARK 465 ASP A 576 REMARK 465 THR A 577 REMARK 465 PHE A 578 REMARK 465 TYR A 579 REMARK 465 SER A 580 REMARK 465 GLY A 581 REMARK 465 SER A 582 REMARK 465 TYR A 583 REMARK 465 ASP A 584 REMARK 465 TYR A 585 REMARK 465 TRP A 586 REMARK 465 GLY A 587 REMARK 465 GLN A 588 REMARK 465 GLY A 589 REMARK 465 THR A 590 REMARK 465 GLN A 591 REMARK 465 VAL A 592 REMARK 465 THR A 593 REMARK 465 VAL A 594 REMARK 465 SER A 595 REMARK 465 SER A 596 REMARK 465 HIS A 597 REMARK 465 HIS A 598 REMARK 465 HIS A 599 REMARK 465 HIS A 600 REMARK 465 HIS A 601 REMARK 465 HIS A 602 REMARK 465 HIS A 603 REMARK 465 HIS A 604 REMARK 465 HIS A 605 REMARK 465 HIS A 606 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 TYR A 92 -13.25 73.60 REMARK 500 PRO A 146 47.71 -75.39 REMARK 500 ALA A 332 -6.08 68.85 REMARK 500 TRP A 334 51.11 -95.52 REMARK 500 HIS A 355 58.65 -92.42 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-61758 RELATED DB: EMDB REMARK 900 OUTWARD-OPEN HSLC19A1 + MTX DBREF 9JRK A -82 23 UNP P0ABE7 C562_ECOLX 23 128 DBREF 9JRK A 24 457 UNP P41440 S19A1_HUMAN 24 457 DBREF 9JRK A 458 606 PDB 9JRK 9JRK 458 606 SEQADV 9JRK MET A -83 UNP P0ABE7 INITIATING METHIONINE SEQADV 9JRK TRP A -76 UNP P0ABE7 MET 29 CONFLICT SEQADV 9JRK ILE A 19 UNP P0ABE7 HIS 124 CONFLICT SEQADV 9JRK LEU A 23 UNP P0ABE7 ARG 128 CONFLICT SEQADV 9JRK GLN A 58 UNP P41440 ASN 58 CONFLICT SEQADV 9JRK TRP A 307 UNP P41440 GLY 307 CONFLICT SEQRES 1 A 690 MET ALA ASP LEU GLU ASP ASN TRP GLU THR LEU ASN ASP SEQRES 2 A 690 ASN LEU LYS VAL ILE GLU LYS ALA ASP ASN ALA ALA GLN SEQRES 3 A 690 VAL LYS ASP ALA LEU THR LYS MET ARG ALA ALA ALA LEU SEQRES 4 A 690 ASP ALA GLN LYS ALA THR PRO PRO LYS LEU GLU ASP LYS SEQRES 5 A 690 SER PRO ASP SER PRO GLU MET LYS ASP PHE ARG HIS GLY SEQRES 6 A 690 PHE ASP ILE LEU VAL GLY GLN ILE ASP ASP ALA LEU LYS SEQRES 7 A 690 LEU ALA ASN GLU GLY LYS VAL LYS GLU ALA GLN ALA ALA SEQRES 8 A 690 ALA GLU GLN LEU LYS THR THR ARG ASN ALA TYR ILE GLN SEQRES 9 A 690 LYS TYR LEU SER TRP ARG HIS LEU VAL CYS TYR LEU CYS SEQRES 10 A 690 PHE TYR GLY PHE MET ALA GLN ILE ARG PRO GLY GLU SER SEQRES 11 A 690 PHE ILE THR PRO TYR LEU LEU GLY PRO ASP LYS GLN PHE SEQRES 12 A 690 THR ARG GLU GLN VAL THR ASN GLU ILE THR PRO VAL LEU SEQRES 13 A 690 SER TYR SER TYR LEU ALA VAL LEU VAL PRO VAL PHE LEU SEQRES 14 A 690 LEU THR ASP TYR LEU ARG TYR THR PRO VAL LEU LEU LEU SEQRES 15 A 690 GLN GLY LEU SER PHE VAL SER VAL TRP LEU LEU LEU LEU SEQRES 16 A 690 LEU GLY HIS SER VAL ALA HIS MET GLN LEU MET GLU LEU SEQRES 17 A 690 PHE TYR SER VAL THR MET ALA ALA ARG ILE ALA TYR SER SEQRES 18 A 690 SER TYR ILE PHE SER LEU VAL ARG PRO ALA ARG TYR GLN SEQRES 19 A 690 ARG VAL ALA GLY TYR SER ARG ALA ALA VAL LEU LEU GLY SEQRES 20 A 690 VAL PHE THR SER SER VAL LEU GLY GLN LEU LEU VAL THR SEQRES 21 A 690 VAL GLY ARG VAL SER PHE SER THR LEU ASN TYR ILE SER SEQRES 22 A 690 LEU ALA PHE LEU THR PHE SER VAL VAL LEU ALA LEU PHE SEQRES 23 A 690 LEU LYS ARG PRO LYS ARG SER LEU PHE PHE ASN ARG ASP SEQRES 24 A 690 ASP ARG GLY ARG CYS GLU THR SER ALA SER GLU LEU GLU SEQRES 25 A 690 ARG MET ASN PRO GLY PRO GLY GLY LYS LEU GLY HIS ALA SEQRES 26 A 690 LEU ARG VAL ALA CYS GLY ASP SER VAL LEU ALA ARG MET SEQRES 27 A 690 LEU ARG GLU LEU GLY ASP SER LEU ARG ARG PRO GLN LEU SEQRES 28 A 690 ARG LEU TRP SER LEU TRP TRP VAL PHE ASN SER ALA GLY SEQRES 29 A 690 TYR TYR LEU VAL VAL TYR TYR VAL HIS ILE LEU TRP ASN SEQRES 30 A 690 GLU VAL ASP PRO THR THR ASN SER ALA ARG VAL TYR ASN SEQRES 31 A 690 TRP ALA ALA ASP ALA ALA SER THR LEU LEU GLY ALA ILE SEQRES 32 A 690 THR SER PHE ALA ALA GLY PHE VAL LYS ILE ARG TRP ALA SEQRES 33 A 690 ARG TRP SER LYS LEU LEU ILE ALA GLY VAL THR ALA THR SEQRES 34 A 690 GLN ALA GLY LEU VAL PHE LEU LEU ALA HIS THR ARG HIS SEQRES 35 A 690 PRO SER SER ILE TRP LEU CYS TYR ALA ALA PHE VAL LEU SEQRES 36 A 690 PHE ARG GLY SER TYR GLN PHE LEU VAL PRO ILE ALA THR SEQRES 37 A 690 PHE GLN ILE ALA SER SER LEU SER LYS GLU LEU CYS ALA SEQRES 38 A 690 LEU VAL PHE GLY VAL ASN THR PHE PHE ALA THR ILE VAL SEQRES 39 A 690 LYS THR ILE ILE THR PHE ILE VAL SER ASP VAL ARG GLY SEQRES 40 A 690 LEU GLY LEU PRO VAL ARG LYS GLN PHE GLN LEU TYR SER SEQRES 41 A 690 VAL TYR PHE LEU ILE LEU SER ILE ILE TYR PHE LEU GLY SEQRES 42 A 690 ALA MET LEU ASP GLY LEU ARG HIS ALA GLU GLU GLU LYS SEQRES 43 A 690 ARG LYS ALA GLU GLU GLU LYS ARG LYS GLY SER GLY SER SEQRES 44 A 690 GLN VAL GLN LEU GLN GLU SER GLY GLY GLY LEU VAL GLN SEQRES 45 A 690 PRO GLY GLY SER LEU ARG LEU SER CYS ALA ALA SER GLY SEQRES 46 A 690 ARG THR ILE SER ARG TYR ALA MET SER TRP PHE ARG GLN SEQRES 47 A 690 ALA PRO GLY LYS GLU ARG GLU PHE VAL ALA VAL ALA ARG SEQRES 48 A 690 ARG SER GLY ASP GLY ALA PHE TYR ALA ASP SER VAL GLN SEQRES 49 A 690 GLY ARG PHE THR VAL SER ARG ASP ASP ALA LYS ASN THR SEQRES 50 A 690 VAL TYR LEU GLN MET ASN SER LEU LYS PRO GLU ASP THR SEQRES 51 A 690 ALA VAL TYR TYR CYS ALA ILE ASP SER ASP THR PHE TYR SEQRES 52 A 690 SER GLY SER TYR ASP TYR TRP GLY GLN GLY THR GLN VAL SEQRES 53 A 690 THR VAL SER SER HIS HIS HIS HIS HIS HIS HIS HIS HIS SEQRES 54 A 690 HIS HET MTX A 701 33 HETNAM MTX METHOTREXATE FORMUL 2 MTX C20 H22 N8 O5 HELIX 1 AA1 LEU A 28 GLN A 40 1 13 HELIX 2 AA2 PHE A 47 GLY A 54 1 8 HELIX 3 AA3 THR A 60 GLU A 67 1 8 HELIX 4 AA4 ILE A 68 ARG A 91 1 24 HELIX 5 AA5 TYR A 92 GLY A 113 1 22 HELIX 6 AA6 SER A 115 VAL A 144 1 30 HELIX 7 AA7 ARG A 148 THR A 176 1 29 HELIX 8 AA8 SER A 181 PHE A 202 1 22 HELIX 9 AA9 VAL A 250 ARG A 263 1 14 HELIX 10 AB1 ARG A 264 VAL A 295 1 32 HELIX 11 AB2 VAL A 304 VAL A 327 1 24 HELIX 12 AB3 SER A 335 HIS A 355 1 21 HELIX 13 AB4 TRP A 363 LEU A 379 1 17 HELIX 14 AB5 LEU A 379 SER A 389 1 11 HELIX 15 AB6 LEU A 395 SER A 419 1 25 HELIX 16 AB7 PRO A 427 ILE A 445 1 19 HELIX 17 AB8 TYR A 446 ALA A 450 5 5 HELIX 18 AB9 MET A 451 HIS A 457 1 7 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