HEADER MEMBRANE PROTEIN 01-APR-25 9QQM TITLE AUXIN TRANSPORTER-LIKE PROTEIN 3 (LAX3) IN THE INWARD OPEN STATE, APO COMPND MOL_ID: 1; COMPND 2 MOLECULE: AUXIN TRANSPORTER-LIKE PROTEIN 3; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: AUX1-LIKE PROTEIN 3; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ARABIDOPSIS THALIANA; SOURCE 3 ORGANISM_COMMON: THALE CRESS; SOURCE 4 ORGANISM_TAXID: 3702; SOURCE 5 GENE: LAX3, AT1G77690, T32E8.2; SOURCE 6 EXPRESSION_SYSTEM: SACCHAROMYCES CEREVISIAE; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 4932 KEYWDS AUXIN TRANSMEMBRANE TRANSPORT, AAAP FAMILY, APC SUPERFAMILY, MEMBRANE KEYWDS 2 PROTEIN, TRANSPORT PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR B.L.AMSINCK,K.L.UNG,D.L.STOKES,B.P.PEDERSEN REVDAT 2 03-SEP-25 9QQM 1 JRNL REVDAT 1 13-AUG-25 9QQM 0 JRNL AUTH K.L.UNG,L.SCHULZ,L.ZUZIC,B.L.AMSINCK,S.KOUTNIK-ABELE, JRNL AUTH 2 I.BENHAMMOUCHE,C.G.ANDERSEN,L.NEL,B.SCHIOTT,D.L.STOKES, JRNL AUTH 3 U.Z.HAMMES,B.P.PEDERSEN JRNL TITL STRUCTURES AND MECHANISM OF THE AUX/LAX TRANSPORTERS JRNL TITL 2 INVOLVED IN AUXIN IMPORT. JRNL REF NAT.PLANTS V. 11 1670 2025 JRNL REFN ESSN 2055-0278 JRNL PMID 40759769 JRNL DOI 10.1038/S41477-025-02056-Z REMARK 2 REMARK 2 RESOLUTION. 3.16 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 : 9H62 REMARK 3 REFINEMENT SPACE : NULL REMARK 3 REFINEMENT PROTOCOL : NULL REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : 96.900 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) : 3.160 REMARK 3 NUMBER OF PARTICLES : 80204 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 9QQM COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 01-APR-25. REMARK 100 THE DEPOSITION ID IS D_1292146420. 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 : LAX3 APO REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 8.00 REMARK 245 SAMPLE SUPPORT DETAILS : 15 MA REMARK 245 SAMPLE VITRIFICATION DETAILS : WAIT 4 SECONDS AFTER SAMPLE REMARK 245 LOADING. BLOTTING TIME 4 REMARK 245 SECONDS WITH BLOTTING FORCE OF - REMARK 245 1 BEFORE PLUNGING REMARK 245 SAMPLE BUFFER : NULL REMARK 245 PH : 5.50 REMARK 245 SAMPLE DETAILS : NULL REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : 10273 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) : 600.00 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 : 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 : 130000 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA 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 43 REMARK 465 GLY A 44 REMARK 465 SER A 45 REMARK 465 VAL A 46 REMARK 465 TYR A 47 REMARK 465 LYS A 110 REMARK 465 PHE A 111 REMARK 465 ASP A 112 REMARK 465 PHE A 113 REMARK 465 ARG A 114 REMARK 465 ASN A 115 REMARK 465 PRO A 186 REMARK 465 SER A 187 REMARK 465 PHE A 188 REMARK 465 HIS A 189 REMARK 465 ASN A 190 REMARK 465 HIS A 255 REMARK 465 ALA A 256 REMARK 465 MET A 257 REMARK 465 TRP A 258 REMARK 465 LYS A 259 REMARK 465 PRO A 260 REMARK 465 GLN A 261 REMARK 465 LYS A 262 REMARK 465 PHE A 263 REMARK 465 GLU A 343 REMARK 465 THR A 344 REMARK 465 LYS A 345 REMARK 465 SER A 346 REMARK 465 MET A 347 REMARK 465 PHE A 348 REMARK 465 PRO A 467 REMARK 465 HIS A 468 REMARK 465 LYS A 469 REMARK 465 PRO A 470 REMARK 465 GLY A 471 REMARK 465 GLU A 472 REMARK 465 ASN A 473 REMARK 465 LEU A 474 REMARK 465 TYR A 475 REMARK 465 PHE A 476 REMARK 465 GLN A 477 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 VAL A 249 CG1 CG2 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 LEU A 128 -60.22 -94.24 REMARK 500 PHE A 244 34.94 -98.22 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-53308 RELATED DB: EMDB REMARK 900 AUXIN TRANSPORTER-LIKE PROTEIN 3 (LAX3) IN THE INWARD OPEN STATE, REMARK 900 APO DBREF 9QQM A 44 470 UNP Q9CA25 LAX3_ARATH 44 470 SEQADV 9QQM MET A 43 UNP Q9CA25 INITIATING METHIONINE SEQADV 9QQM GLY A 471 UNP Q9CA25 EXPRESSION TAG SEQADV 9QQM GLU A 472 UNP Q9CA25 EXPRESSION TAG SEQADV 9QQM ASN A 473 UNP Q9CA25 EXPRESSION TAG SEQADV 9QQM LEU A 474 UNP Q9CA25 EXPRESSION TAG SEQADV 9QQM TYR A 475 UNP Q9CA25 EXPRESSION TAG SEQADV 9QQM PHE A 476 UNP Q9CA25 EXPRESSION TAG SEQADV 9QQM GLN A 477 UNP Q9CA25 EXPRESSION TAG SEQRES 1 A 435 MET GLY SER VAL TYR ASP ALA TRP PHE SER CYS ALA SER SEQRES 2 A 435 ASN GLN VAL ALA GLN VAL LEU LEU THR LEU PRO TYR SER SEQRES 3 A 435 PHE SER GLN LEU GLY MET MET SER GLY ILE LEU PHE GLN SEQRES 4 A 435 LEU PHE TYR GLY LEU MET GLY SER TRP THR ALA TYR LEU SEQRES 5 A 435 ILE SER VAL LEU TYR VAL GLU TYR ARG THR ARG LYS GLU SEQRES 6 A 435 ARG GLU LYS PHE ASP PHE ARG ASN HIS VAL ILE GLN TRP SEQRES 7 A 435 PHE GLU VAL LEU ASP GLY LEU LEU GLY LYS HIS TRP ARG SEQRES 8 A 435 ASN LEU GLY LEU ILE PHE ASN CYS THR PHE LEU LEU PHE SEQRES 9 A 435 GLY SER VAL ILE GLN LEU ILE ALA CYS ALA SER ASN ILE SEQRES 10 A 435 TYR TYR ILE ASN ASP LYS LEU ASP LYS ARG THR TRP THR SEQRES 11 A 435 TYR ILE PHE GLY ALA CYS CYS ALA THR THR VAL PHE ILE SEQRES 12 A 435 PRO SER PHE HIS ASN TYR ARG ILE TRP SER PHE LEU GLY SEQRES 13 A 435 LEU ALA MET THR THR TYR THR SER TRP TYR LEU THR ILE SEQRES 14 A 435 ALA SER LEU LEU HIS GLY GLN ALA GLU ASP VAL LYS HIS SEQRES 15 A 435 SER GLY PRO THR THR MET VAL LEU TYR PHE THR GLY ALA SEQRES 16 A 435 THR ASN ILE LEU TYR THR PHE GLY GLY HIS ALA VAL THR SEQRES 17 A 435 VAL GLU ILE MET HIS ALA MET TRP LYS PRO GLN LYS PHE SEQRES 18 A 435 LYS ALA ILE TYR LEU LEU ALA THR ILE TYR VAL LEU THR SEQRES 19 A 435 LEU THR LEU PRO SER ALA SER ALA VAL TYR TRP ALA PHE SEQRES 20 A 435 GLY ASP LYS LEU LEU THR HIS SER ASN ALA LEU SER LEU SEQRES 21 A 435 LEU PRO LYS THR GLY PHE ARG ASP THR ALA VAL ILE LEU SEQRES 22 A 435 MET LEU ILE HIS GLN PHE ILE THR PHE GLY PHE ALA SER SEQRES 23 A 435 THR PRO LEU TYR PHE VAL TRP GLU LYS LEU ILE GLY VAL SEQRES 24 A 435 HIS GLU THR LYS SER MET PHE LYS ARG ALA MET ALA ARG SEQRES 25 A 435 LEU PRO VAL VAL VAL PRO ILE TRP PHE LEU ALA ILE ILE SEQRES 26 A 435 PHE PRO PHE PHE GLY PRO ILE ASN SER ALA VAL GLY SER SEQRES 27 A 435 LEU LEU VAL SER PHE THR VAL TYR ILE ILE PRO ALA LEU SEQRES 28 A 435 ALA HIS MET LEU THR PHE ALA PRO ALA PRO SER ARG GLU SEQRES 29 A 435 ASN ALA VAL GLU ARG PRO PRO ARG VAL VAL GLY GLY TRP SEQRES 30 A 435 MET GLY THR TYR CYS ILE ASN ILE PHE VAL VAL VAL TRP SEQRES 31 A 435 VAL PHE VAL VAL GLY PHE GLY PHE GLY GLY TRP ALA SER SEQRES 32 A 435 MET VAL ASN PHE VAL ARG GLN ILE ASP THR PHE GLY LEU SEQRES 33 A 435 PHE THR LYS CYS TYR GLN CYS PRO PRO HIS LYS PRO GLY SEQRES 34 A 435 GLU ASN LEU TYR PHE GLN HELIX 1 AA1 ASP A 48 ASN A 56 1 9 HELIX 2 AA2 GLN A 57 LEU A 63 1 7 HELIX 3 AA3 THR A 64 GLY A 73 1 10 HELIX 4 AA4 GLY A 73 GLU A 109 1 37 HELIX 5 AA5 GLN A 119 LEU A 128 1 10 HELIX 6 AA6 GLY A 129 ASN A 163 1 35 HELIX 7 AA7 ASP A 167 ALA A 180 1 14 HELIX 8 AA8 THR A 181 PHE A 184 5 4 HELIX 9 AA9 ARG A 192 GLY A 217 1 26 HELIX 10 AB1 THR A 229 PHE A 244 1 16 HELIX 11 AB2 ALA A 265 GLY A 290 1 26 HELIX 12 AB3 ASP A 291 HIS A 296 5 6 HELIX 13 AB4 THR A 306 GLY A 340 1 35 HELIX 14 AB5 ARG A 350 PHE A 368 1 19 HELIX 15 AB6 GLY A 372 VAL A 387 1 16 HELIX 16 AB7 TYR A 388 PHE A 399 1 12 HELIX 17 AB8 PRO A 401 ASN A 407 1 7 HELIX 18 AB9 PRO A 413 VAL A 416 5 4 HELIX 19 AC1 GLY A 417 VAL A 436 1 20 HELIX 20 AC2 GLY A 439 GLY A 457 1 19 SSBOND 1 CYS A 462 CYS A 465 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 TER 6262 PRO A 466 CONECT 6195 6243 CONECT 6243 6195 MASTER 179 0 0 20 0 0 0 6 3132 1 2 34 END