HEADER TRANSPORT PROTEIN 16-MAY-26 26VE TITLE SMVT IN THE INWARD-OPEN STATE COMPND MOL_ID: 1; COMPND 2 MOLECULE: SODIUM-DEPENDENT MULTIVITAMIN TRANSPORTER; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: NA(+)-DEPENDENT MULTIVITAMIN TRANSPORTER,HSMVT,SOLUTE COMPND 5 CARRIER FAMILY 5 MEMBER 6; 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: SLC5A6, SMVT; SOURCE 6 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 9606 KEYWDS SODIUM-DEPENDENT MULTIVITAMIN TRANSPORTER, SMVT, SLC5A6, TRANSPORT KEYWDS 2 PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR Z.ZHANG,Q.ZHEN REVDAT 1 08-JUL-26 26VE 0 JRNL AUTH Q.ZHEN,M.WANG,Z.ZHANG JRNL TITL STRUCTURAL BASIS FOR MULTIVITAMIN RECOGNITION AND TRANSPORT JRNL TITL 2 BY HUMAN SMVT. JRNL REF NAT COMMUN 2026 JRNL REFN ESSN 2041-1723 JRNL PMID 42364996 JRNL DOI 10.1038/S41467-026-74948-3 REMARK 2 REMARK 2 RESOLUTION. 3.70 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, PHENIX, 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 : 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) : 3.700 REMARK 3 NUMBER OF PARTICLES : 131517 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 26VE COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBC ON 20-MAY-26. REMARK 100 THE DEPOSITION ID IS D_1300074426. 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 : SMVT PURIFIED IN KCL BUFFER REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 5.00 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 : FEI POLARA 300 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) : 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) : 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 MET A 1 REMARK 465 SER A 2 REMARK 465 VAL A 3 REMARK 465 GLY A 4 REMARK 465 VAL A 5 REMARK 465 SER A 6 REMARK 465 THR A 7 REMARK 465 SER A 8 REMARK 465 ALA A 9 REMARK 465 PRO A 10 REMARK 465 LEU A 11 REMARK 465 SER A 12 REMARK 465 PRO A 13 REMARK 465 THR A 14 REMARK 465 SER A 15 REMARK 465 GLY A 16 REMARK 465 THR A 17 REMARK 465 SER A 18 REMARK 465 VAL A 19 REMARK 465 GLY A 20 REMARK 465 CYS A 48 REMARK 465 ARG A 49 REMARK 465 GLY A 50 REMARK 465 TRP A 51 REMARK 465 GLY A 52 REMARK 465 ARG A 53 REMARK 465 HIS A 54 REMARK 465 THR A 55 REMARK 465 VAL A 56 REMARK 465 GLY A 57 REMARK 465 GLU A 58 REMARK 465 LEU A 59 REMARK 465 LEU A 60 REMARK 465 MET A 61 REMARK 465 ALA A 62 REMARK 465 ASP A 63 REMARK 465 ARG A 64 REMARK 465 LYS A 65 REMARK 465 MET A 66 REMARK 465 GLY A 67 REMARK 465 CYS A 68 REMARK 465 LEU A 69 REMARK 465 MET A 499 REMARK 465 GLY A 500 REMARK 465 SER A 501 REMARK 465 SER A 502 REMARK 465 MET A 503 REMARK 465 SER A 504 REMARK 465 ARG A 505 REMARK 465 LEU A 506 REMARK 465 GLU A 507 REMARK 465 GLU A 508 REMARK 465 GLU A 509 REMARK 465 LEU A 510 REMARK 465 ARG A 511 REMARK 465 ARG A 512 REMARK 465 ARG A 513 REMARK 465 LEU A 514 REMARK 465 THR A 515 REMARK 465 GLU A 516 REMARK 465 THR A 517 REMARK 465 GLY A 518 REMARK 465 LEU A 519 REMARK 465 GLN A 520 REMARK 465 ARG A 521 REMARK 465 LEU A 570 REMARK 465 SER A 571 REMARK 465 LEU A 572 REMARK 465 LEU A 573 REMARK 465 PRO A 574 REMARK 465 LEU A 575 REMARK 465 SER A 576 REMARK 465 CYS A 577 REMARK 465 GLN A 578 REMARK 465 LYS A 579 REMARK 465 ARG A 580 REMARK 465 LEU A 581 REMARK 465 HIS A 582 REMARK 465 CYS A 583 REMARK 465 ARG A 584 REMARK 465 SER A 585 REMARK 465 TYR A 586 REMARK 465 GLY A 587 REMARK 465 GLN A 588 REMARK 465 ASP A 589 REMARK 465 HIS A 590 REMARK 465 LEU A 591 REMARK 465 ASP A 592 REMARK 465 THR A 593 REMARK 465 GLY A 594 REMARK 465 LEU A 595 REMARK 465 PHE A 596 REMARK 465 PRO A 597 REMARK 465 GLU A 598 REMARK 465 LYS A 599 REMARK 465 PRO A 600 REMARK 465 ARG A 601 REMARK 465 ASN A 602 REMARK 465 GLY A 603 REMARK 465 VAL A 604 REMARK 465 LEU A 605 REMARK 465 GLY A 606 REMARK 465 ASP A 607 REMARK 465 SER A 608 REMARK 465 ARG A 609 REMARK 465 ASP A 610 REMARK 465 LYS A 611 REMARK 465 GLU A 612 REMARK 465 ALA A 613 REMARK 465 MET A 614 REMARK 465 ALA A 615 REMARK 465 LEU A 616 REMARK 465 ASP A 617 REMARK 465 GLY A 618 REMARK 465 THR A 619 REMARK 465 ALA A 620 REMARK 465 TYR A 621 REMARK 465 GLN A 622 REMARK 465 GLY A 623 REMARK 465 SER A 624 REMARK 465 SER A 625 REMARK 465 SER A 626 REMARK 465 THR A 627 REMARK 465 CYS A 628 REMARK 465 ILE A 629 REMARK 465 LEU A 630 REMARK 465 GLN A 631 REMARK 465 GLU A 632 REMARK 465 THR A 633 REMARK 465 SER A 634 REMARK 465 LEU A 635 REMARK 465 SER A 636 REMARK 465 ASN A 637 REMARK 465 SER A 638 REMARK 465 LEU A 639 REMARK 465 GLU A 640 REMARK 465 VAL A 641 REMARK 465 LEU A 642 REMARK 465 PHE A 643 REMARK 465 GLN A 644 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 PHE A 24 -73.63 -60.99 REMARK 500 SER A 25 -179.93 -179.53 REMARK 500 THR A 97 35.08 -93.93 REMARK 500 ILE A 116 -58.77 -124.11 REMARK 500 PHE A 137 -65.38 -109.38 REMARK 500 LEU A 351 -36.96 -39.30 REMARK 500 ILE A 383 -55.24 -123.82 REMARK 500 SER A 417 35.21 -97.03 REMARK 500 GLN A 419 53.86 -91.82 REMARK 500 CYS A 450 33.99 -96.14 REMARK 500 ARG A 551 -167.18 -78.78 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-80907 RELATED DB: EMDB REMARK 900 SMVT IN THE INWARD-OPEN STATE DBREF 26VE A 1 503 UNP Q9Y289 SC5A6_HUMAN 1 483 DBREF 26VE A 517 635 UNP Q9Y289 SC5A6_HUMAN 517 635 SEQADV 26VE SER A 504 UNP Q9Y289 LINKER SEQADV 26VE ARG A 505 UNP Q9Y289 LINKER SEQADV 26VE LEU A 506 UNP Q9Y289 LINKER SEQADV 26VE GLU A 507 UNP Q9Y289 LINKER SEQADV 26VE GLU A 508 UNP Q9Y289 LINKER SEQADV 26VE GLU A 509 UNP Q9Y289 LINKER SEQADV 26VE LEU A 510 UNP Q9Y289 LINKER SEQADV 26VE ARG A 511 UNP Q9Y289 LINKER SEQADV 26VE ARG A 512 UNP Q9Y289 LINKER SEQADV 26VE ARG A 513 UNP Q9Y289 LINKER SEQADV 26VE LEU A 514 UNP Q9Y289 LINKER SEQADV 26VE THR A 515 UNP Q9Y289 LINKER SEQADV 26VE GLU A 516 UNP Q9Y289 LINKER SEQADV 26VE SER A 636 UNP Q9Y289 EXPRESSION TAG SEQADV 26VE ASN A 637 UNP Q9Y289 EXPRESSION TAG SEQADV 26VE SER A 638 UNP Q9Y289 EXPRESSION TAG SEQADV 26VE LEU A 639 UNP Q9Y289 EXPRESSION TAG SEQADV 26VE GLU A 640 UNP Q9Y289 EXPRESSION TAG SEQADV 26VE VAL A 641 UNP Q9Y289 EXPRESSION TAG SEQADV 26VE LEU A 642 UNP Q9Y289 EXPRESSION TAG SEQADV 26VE PHE A 643 UNP Q9Y289 EXPRESSION TAG SEQADV 26VE GLN A 644 UNP Q9Y289 EXPRESSION TAG SEQRES 1 A 624 MET SER VAL GLY VAL SER THR SER ALA PRO LEU SER PRO SEQRES 2 A 624 THR SER GLY THR SER VAL GLY MET SER THR PHE SER ILE SEQRES 3 A 624 MET ASP TYR VAL VAL PHE VAL LEU LEU LEU VAL LEU SER SEQRES 4 A 624 LEU ALA ILE GLY LEU TYR HIS ALA CYS ARG GLY TRP GLY SEQRES 5 A 624 ARG HIS THR VAL GLY GLU LEU LEU MET ALA ASP ARG LYS SEQRES 6 A 624 MET GLY CYS LEU PRO VAL ALA LEU SER LEU LEU ALA THR SEQRES 7 A 624 PHE GLN SER ALA VAL ALA ILE LEU GLY VAL PRO SER GLU SEQRES 8 A 624 ILE TYR ARG PHE GLY THR GLN TYR TRP PHE LEU GLY CYS SEQRES 9 A 624 CYS TYR PHE LEU GLY LEU LEU ILE PRO ALA HIS ILE PHE SEQRES 10 A 624 ILE PRO VAL PHE TYR ARG LEU HIS LEU THR SER ALA TYR SEQRES 11 A 624 GLU TYR LEU GLU LEU ARG PHE ASN LYS THR VAL ARG VAL SEQRES 12 A 624 CYS GLY THR VAL THR PHE ILE PHE GLN MET VAL ILE TYR SEQRES 13 A 624 MET GLY VAL VAL LEU TYR ALA PRO SER LEU ALA LEU ASN SEQRES 14 A 624 ALA VAL THR GLY PHE ASP LEU TRP LEU SER VAL LEU ALA SEQRES 15 A 624 LEU GLY ILE VAL CYS THR VAL TYR THR ALA LEU GLY GLY SEQRES 16 A 624 LEU LYS ALA VAL ILE TRP THR ASP VAL PHE GLN THR LEU SEQRES 17 A 624 VAL MET PHE LEU GLY GLN LEU ALA VAL ILE ILE VAL GLY SEQRES 18 A 624 SER ALA LYS VAL GLY GLY LEU GLY ARG VAL TRP ALA VAL SEQRES 19 A 624 ALA SER GLN HIS GLY ARG ILE SER GLY PHE GLU LEU ASP SEQRES 20 A 624 PRO ASP PRO PHE VAL ARG HIS THR PHE TRP THR LEU ALA SEQRES 21 A 624 PHE GLY GLY VAL PHE MET MET LEU SER LEU TYR GLY VAL SEQRES 22 A 624 ASN GLN ALA GLN VAL GLN ARG TYR LEU SER SER ARG THR SEQRES 23 A 624 GLU LYS ALA ALA VAL LEU SER CYS TYR ALA VAL PHE PRO SEQRES 24 A 624 PHE GLN GLN VAL SER LEU CYS VAL GLY CYS LEU ILE GLY SEQRES 25 A 624 LEU VAL MET PHE ALA TYR TYR GLN GLU TYR PRO MET SER SEQRES 26 A 624 ILE GLN GLN ALA GLN ALA ALA PRO ASP GLN PHE VAL LEU SEQRES 27 A 624 TYR PHE VAL MET ASP LEU LEU LYS GLY LEU PRO GLY LEU SEQRES 28 A 624 PRO GLY LEU PHE ILE ALA CYS LEU PHE SER GLY SER LEU SEQRES 29 A 624 SER THR ILE SER SER ALA PHE ASN SER LEU ALA THR VAL SEQRES 30 A 624 THR MET GLU ASP LEU ILE ARG PRO TRP PHE PRO GLU PHE SEQRES 31 A 624 SER GLU ALA ARG ALA ILE MET LEU SER ARG GLY LEU ALA SEQRES 32 A 624 PHE GLY TYR GLY LEU LEU CYS LEU GLY MET ALA TYR ILE SEQRES 33 A 624 SER SER GLN MET GLY PRO VAL LEU GLN ALA ALA ILE SER SEQRES 34 A 624 ILE PHE GLY MET VAL GLY GLY PRO LEU LEU GLY LEU PHE SEQRES 35 A 624 CYS LEU GLY MET PHE PHE PRO CYS ALA ASN PRO PRO GLY SEQRES 36 A 624 ALA VAL VAL GLY LEU LEU ALA GLY LEU VAL MET ALA PHE SEQRES 37 A 624 TRP ILE GLY ILE GLY SER ILE VAL THR SER MET GLY SER SEQRES 38 A 624 SER MET SER ARG LEU GLU GLU GLU LEU ARG ARG ARG LEU SEQRES 39 A 624 THR GLU THR GLY LEU GLN ARG PHE TYR SER LEU SER TYR SEQRES 40 A 624 LEU TRP TYR SER ALA HIS ASN SER THR THR VAL ILE VAL SEQRES 41 A 624 VAL GLY LEU ILE VAL SER LEU LEU THR GLY ARG MET ARG SEQRES 42 A 624 GLY ARG SER LEU ASN PRO ALA THR ILE TYR PRO VAL LEU SEQRES 43 A 624 PRO LYS LEU LEU SER LEU LEU PRO LEU SER CYS GLN LYS SEQRES 44 A 624 ARG LEU HIS CYS ARG SER TYR GLY GLN ASP HIS LEU ASP SEQRES 45 A 624 THR GLY LEU PHE PRO GLU LYS PRO ARG ASN GLY VAL LEU SEQRES 46 A 624 GLY ASP SER ARG ASP LYS GLU ALA MET ALA LEU ASP GLY SEQRES 47 A 624 THR ALA TYR GLN GLY SER SER SER THR CYS ILE LEU GLN SEQRES 48 A 624 GLU THR SER LEU SER ASN SER LEU GLU VAL LEU PHE GLN HELIX 1 AA1 MET A 27 ALA A 47 1 21 HELIX 2 AA2 VAL A 71 PHE A 79 1 9 HELIX 3 AA3 ALA A 82 GLY A 87 1 6 HELIX 4 AA4 GLY A 87 GLY A 96 1 10 HELIX 5 AA5 GLN A 98 CYS A 104 5 7 HELIX 6 AA6 CYS A 105 LEU A 110 1 6 HELIX 7 AA7 LEU A 110 ILE A 116 1 7 HELIX 8 AA8 ILE A 116 ARG A 123 1 8 HELIX 9 AA9 TYR A 130 PHE A 137 1 8 HELIX 10 AB1 ASN A 138 GLY A 173 1 36 HELIX 11 AB2 ASP A 175 LEU A 193 1 19 HELIX 12 AB3 THR A 202 GLY A 226 1 25 HELIX 13 AB4 GLY A 227 HIS A 238 1 12 HELIX 14 AB5 THR A 255 GLY A 272 1 18 HELIX 15 AB6 ASN A 274 SER A 283 1 10 HELIX 16 AB7 THR A 286 TYR A 322 1 37 HELIX 17 AB8 SER A 325 GLN A 330 1 6 HELIX 18 AB9 GLN A 335 LEU A 345 1 11 HELIX 19 AC1 GLY A 350 ILE A 383 1 34 HELIX 20 AC2 SER A 391 SER A 417 1 27 HELIX 21 AC3 PRO A 422 VAL A 434 1 13 HELIX 22 AC4 VAL A 434 PHE A 448 1 15 HELIX 23 AC5 ASN A 452 VAL A 476 1 25 HELIX 24 AC6 TRP A 529 THR A 549 1 21 HELIX 25 AC7 PRO A 564 LEU A 569 1 6 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 MASTER 271 0 0 25 0 0 0 6 3718 1 0 48 END