HEADER MEMBRANE PROTEIN 23-OCT-24 9H61 TITLE AUXIN TRANSPORTER-LIKE PROTEIN 3 (LAX3) IN THE INWARD OCCLUDED STATE TITLE 2 IN COMPLEX WITH AUXIN (INDOLE-3-ACETIC ACID, IAA) 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 EXPDTA ELECTRON MICROSCOPY AUTHOR K.L.UNG,C.G.ANDERSEN,D.L.STOKES,B.P.PEDERSEN REVDAT 2 03-SEP-25 9H61 1 JRNL REVDAT 1 13-AUG-25 9H61 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. 3.21 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : EPU, COOT, PHENIX REMARK 3 RECONSTRUCTION SCHEMA : FOURIER SPACE REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : NULL REMARK 3 REFINEMENT SPACE : REAL REMARK 3 REFINEMENT PROTOCOL : NULL REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : 111.900 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) : 3.210 REMARK 3 NUMBER OF PARTICLES : 74645 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 9H61 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 23-OCT-24. REMARK 100 THE DEPOSITION ID IS D_1292137727. 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 WITH IAA 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 : 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 : 14171 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) : 6000.00 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 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 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 HIS A 342 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 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 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 VAL A 58 122.11 -38.00 REMARK 500 ALA A 248 -5.59 72.94 REMARK 500 PHE A 370 88.36 -67.71 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-51894 RELATED DB: EMDB REMARK 900 AUXIN TRANSPORTER-LIKE PROTEIN 3 (LAX3) IN THE INWARD OCCLUDED REMARK 900 STATE IN COMPLEX WITH AUXIN (INDOLE-3-ACETIC ACID, IAA) DBREF 9H61 A 44 470 UNP Q9CA25 LAX3_ARATH 44 470 SEQADV 9H61 MET A 43 UNP Q9CA25 INITIATING METHIONINE SEQADV 9H61 GLY A 471 UNP Q9CA25 EXPRESSION TAG SEQADV 9H61 GLU A 472 UNP Q9CA25 EXPRESSION TAG SEQADV 9H61 ASN A 473 UNP Q9CA25 EXPRESSION TAG SEQADV 9H61 LEU A 474 UNP Q9CA25 EXPRESSION TAG SEQADV 9H61 TYR A 475 UNP Q9CA25 EXPRESSION TAG SEQADV 9H61 PHE A 476 UNP Q9CA25 EXPRESSION TAG SEQADV 9H61 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 HET IAC A 500 21 HETNAM IAC 1H-INDOL-3-YLACETIC ACID HETSYN IAC INDOLE ACETIC ACID FORMUL 2 IAC C10 H9 N O2 FORMUL 3 HOH *2(H2 O) HELIX 1 AA1 SER A 45 ASN A 56 1 12 HELIX 2 AA2 GLN A 60 GLY A 73 1 14 HELIX 3 AA3 GLY A 73 ARG A 108 1 36 HELIX 4 AA4 GLN A 119 GLY A 129 1 11 HELIX 5 AA5 GLY A 129 TYR A 161 1 33 HELIX 6 AA6 ASP A 167 THR A 181 1 15 HELIX 7 AA7 THR A 182 ILE A 185 5 4 HELIX 8 AA8 PHE A 188 ILE A 193 5 6 HELIX 9 AA9 TRP A 194 GLY A 217 1 24 HELIX 10 AB1 THR A 229 PHE A 244 1 16 HELIX 11 AB2 VAL A 249 HIS A 255 1 7 HELIX 12 AB3 LYS A 259 GLN A 261 5 3 HELIX 13 AB4 LYS A 262 GLY A 290 1 29 HELIX 14 AB5 ASP A 291 HIS A 296 5 6 HELIX 15 AB6 ASN A 298 LEU A 302 5 5 HELIX 16 AB7 THR A 306 ALA A 327 1 22 HELIX 17 AB8 PRO A 330 GLY A 340 1 11 HELIX 18 AB9 ALA A 351 ALA A 353 5 3 HELIX 19 AC1 ARG A 354 PHE A 368 1 15 HELIX 20 AC2 PHE A 370 LEU A 382 1 13 HELIX 21 AC3 LEU A 382 VAL A 387 1 6 HELIX 22 AC4 TYR A 388 PHE A 399 1 12 HELIX 23 AC5 PRO A 401 ASN A 407 1 7 HELIX 24 AC6 GLY A 417 VAL A 436 1 20 HELIX 25 AC7 PHE A 438 GLY A 457 1 20 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 6598 PRO A 466 HETATM 6599 C IAC A 500 120.425 125.331 120.534 1.00 59.04 C HETATM 6600 C1 IAC A 500 121.674 125.829 120.947 1.00 59.04 C HETATM 6601 C2 IAC A 500 121.772 127.173 121.301 1.00 59.04 C HETATM 6602 C3 IAC A 500 120.649 127.985 121.241 1.00 59.04 C HETATM 6603 C4 IAC A 500 119.425 127.474 120.831 1.00 59.04 C HETATM 6604 C5 IAC A 500 119.298 126.141 120.472 1.00 59.04 C HETATM 6605 C7 IAC A 500 122.602 124.733 120.894 1.00 59.04 C HETATM 6606 C8 IAC A 500 121.891 123.651 120.463 1.00 59.04 C HETATM 6607 C17 IAC A 500 124.061 124.780 121.242 1.00 59.04 C HETATM 6608 C18 IAC A 500 124.563 123.507 121.906 1.00 59.04 C HETATM 6609 N IAC A 500 120.587 123.999 120.245 1.00 59.04 N HETATM 6610 O2 IAC A 500 125.681 123.069 121.539 1.00 59.04 O HETATM 6611 O3 IAC A 500 123.842 122.973 122.774 1.00 59.04 O HETATM 6612 H2 IAC A 500 122.634 127.535 121.591 1.00 59.04 H HETATM 6613 H3 IAC A 500 120.731 128.927 121.492 1.00 59.04 H HETATM 6614 H4 IAC A 500 118.643 128.062 120.794 1.00 59.04 H HETATM 6615 H5 IAC A 500 118.434 125.782 120.183 1.00 59.04 H HETATM 6616 H8 IAC A 500 122.190 122.732 120.306 1.00 59.04 H HETATM 6617 H171 IAC A 500 124.227 125.542 121.833 1.00 59.04 H HETATM 6618 H172 IAC A 500 124.592 124.940 120.436 1.00 59.04 H HETATM 6619 HN IAC A 500 120.003 123.510 119.796 1.00 59.04 H HETATM 6620 O HOH A 701 114.704 127.961 119.550 1.00 66.03 O HETATM 6621 H1 HOH A 701 114.453 128.574 119.032 1.00 66.03 H HETATM 6622 H2 HOH A 701 114.547 127.234 119.159 1.00 66.03 H HETATM 6623 O HOH A 702 117.968 118.612 112.942 1.00 57.88 O HETATM 6624 H1 HOH A 702 118.046 119.446 112.883 1.00 57.88 H HETATM 6625 H2 HOH A 702 118.702 118.282 112.702 1.00 57.88 H CONECT 6531 6579 CONECT 6579 6531 CONECT 6599 6600 6604 6609 CONECT 6600 6599 6601 6605 CONECT 6601 6600 6602 6612 CONECT 6602 6601 6603 6613 CONECT 6603 6602 6604 6614 CONECT 6604 6599 6603 6615 CONECT 6605 6600 6606 6607 CONECT 6606 6605 6609 6616 CONECT 6607 6605 6608 6617 6618 CONECT 6608 6607 6610 6611 CONECT 6609 6599 6606 6619 CONECT 6610 6608 CONECT 6611 6608 CONECT 6612 6601 CONECT 6613 6602 CONECT 6614 6603 CONECT 6615 6604 CONECT 6616 6606 CONECT 6617 6607 CONECT 6618 6607 CONECT 6619 6609 MASTER 152 0 1 25 0 0 0 6 3311 1 23 34 END