HEADER TRANSPORT PROTEIN 22-JUN-22 7Y7W TITLE CRYO-EM STRUCTURE OF HUMAN GABA TRANSPORTER GAT1 BOUND WITH GABA IN TITLE 2 NACL SOLUTION IN AN INWARD-OCCLUDED STATE AT 2.4 ANGSTROM COMPND MOL_ID: 1; COMPND 2 MOLECULE: SODIUM- AND CHLORIDE-DEPENDENT GABA TRANSPORTER 1; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: GAT-1,SOLUTE CARRIER FAMILY 6 MEMBER 1; COMPND 5 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: SLC6A1, GABATR, GABT1, GAT1; SOURCE 6 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 9606 KEYWDS GABA TRANSPORTER, GAT1, NIPECOTIC ACID, TIAGABINE, NEUROTRANSMITTER, KEYWDS 2 SLC6A1., TRANSPORT PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR A.ZHU,J.HUANG,F.KONG,J.TAN,J.LEI,Y.YUAN,C.YAN REVDAT 3 15-NOV-23 7Y7W 1 LINK ATOM REVDAT 2 16-AUG-23 7Y7W 1 JRNL REVDAT 1 26-APR-23 7Y7W 0 JRNL AUTH A.ZHU,J.HUANG,F.KONG,J.TAN,J.LEI,Y.YUAN,C.YAN JRNL TITL MOLECULAR BASIS FOR SUBSTRATE RECOGNITION AND TRANSPORT OF JRNL TITL 2 HUMAN GABA TRANSPORTER GAT1. JRNL REF NAT.STRUCT.MOL.BIOL. V. 30 1012 2023 JRNL REFN ESSN 1545-9985 JRNL PMID 37400655 JRNL DOI 10.1038/S41594-023-00983-Z REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, CRYOSPARC, 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) : 2.400 REMARK 3 NUMBER OF PARTICLES : 847882 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 7Y7W COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 27-JUN-22. REMARK 100 THE DEPOSITION ID IS D_1300030449. 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 : GAT1 REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 8.00 REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : NULL REMARK 245 SAMPLE BUFFER : NULL REMARK 245 PH : 8.00 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 TITAN KRIOS REMARK 245 DETECTOR TYPE : GATAN K3 (6K X 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 1000.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 1400.00 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) : 5000.00 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 ALA A 2 REMARK 465 THR A 3 REMARK 465 ASN A 4 REMARK 465 GLY A 5 REMARK 465 SER A 6 REMARK 465 LYS A 7 REMARK 465 VAL A 8 REMARK 465 ALA A 9 REMARK 465 ASP A 10 REMARK 465 GLY A 11 REMARK 465 GLN A 12 REMARK 465 ILE A 13 REMARK 465 SER A 14 REMARK 465 THR A 15 REMARK 465 GLU A 16 REMARK 465 VAL A 17 REMARK 465 SER A 18 REMARK 465 GLU A 19 REMARK 465 ALA A 20 REMARK 465 PRO A 21 REMARK 465 VAL A 22 REMARK 465 ALA A 23 REMARK 465 ASN A 24 REMARK 465 ASP A 25 REMARK 465 LYS A 26 REMARK 465 PRO A 27 REMARK 465 LYS A 28 REMARK 465 THR A 29 REMARK 465 LEU A 30 REMARK 465 VAL A 31 REMARK 465 VAL A 32 REMARK 465 LYS A 33 REMARK 465 VAL A 34 REMARK 465 GLN A 35 REMARK 465 LYS A 36 REMARK 465 LYS A 37 REMARK 465 ALA A 38 REMARK 465 ALA A 39 REMARK 465 ASP A 40 REMARK 465 LEU A 41 REMARK 465 PRO A 42 REMARK 465 ASP A 43 REMARK 465 ARG A 44 REMARK 465 ASP A 45 REMARK 465 THR A 46 REMARK 465 TRP A 47 REMARK 465 LYS A 48 REMARK 465 VAL A 578 REMARK 465 ARG A 579 REMARK 465 PRO A 580 REMARK 465 GLU A 581 REMARK 465 ASN A 582 REMARK 465 GLY A 583 REMARK 465 PRO A 584 REMARK 465 GLU A 585 REMARK 465 GLN A 586 REMARK 465 PRO A 587 REMARK 465 GLN A 588 REMARK 465 ALA A 589 REMARK 465 GLY A 590 REMARK 465 SER A 591 REMARK 465 SER A 592 REMARK 465 THR A 593 REMARK 465 SER A 594 REMARK 465 LYS A 595 REMARK 465 GLU A 596 REMARK 465 ALA A 597 REMARK 465 TYR A 598 REMARK 465 ILE A 599 REMARK 465 LEU A 600 REMARK 465 GLU A 601 REMARK 465 SER A 602 REMARK 465 GLY A 603 REMARK 465 ASP A 604 REMARK 465 GLU A 605 REMARK 465 VAL A 606 REMARK 465 ASP A 607 REMARK 465 ALA A 608 REMARK 465 SER A 609 REMARK 465 GLY A 610 REMARK 465 ASP A 611 REMARK 465 TYR A 612 REMARK 465 LYS A 613 REMARK 465 ASP A 614 REMARK 465 HIS A 615 REMARK 465 ASP A 616 REMARK 465 GLY A 617 REMARK 465 ASP A 618 REMARK 465 TYR A 619 REMARK 465 LYS A 620 REMARK 465 ASP A 621 REMARK 465 HIS A 622 REMARK 465 ASP A 623 REMARK 465 ILE A 624 REMARK 465 ASP A 625 REMARK 465 TYR A 626 REMARK 465 LYS A 627 REMARK 465 ASP A 628 REMARK 465 ASP A 629 REMARK 465 ASP A 630 REMARK 465 ASP A 631 REMARK 465 LYS A 632 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 HOH A 805 O HOH A 828 1.91 REMARK 500 O HOH A 801 O HOH A 806 2.00 REMARK 500 OE1 GLU A 101 O HOH A 801 2.01 REMARK 500 O LEU A 298 O HOH A 802 2.03 REMARK 500 OG1 THR A 290 O HOH A 803 2.04 REMARK 500 O SER A 454 O HOH A 804 2.07 REMARK 500 O ALA A 357 O HOH A 805 2.10 REMARK 500 O PHE A 556 NH1 ARG A 566 2.12 REMARK 500 OD1 ASN A 184 O5 NAG A 704 2.14 REMARK 500 CG2 THR A 183 C6 NAG A 704 2.15 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 ARG A 419 51.69 -91.36 REMARK 500 SER A 490 146.88 -171.40 REMARK 500 REMARK 500 REMARK: NULL 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 NA A 706 NA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLY A 59 O REMARK 620 2 ILE A 62 O 91.5 REMARK 620 3 LEU A 392 O 162.1 101.2 REMARK 620 4 ASP A 395 OD2 97.7 161.3 73.9 REMARK 620 5 HOH A 836 O 89.2 78.8 105.4 85.0 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 NA A 705 NA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ALA A 61 O REMARK 620 2 ASN A 66 OD1 102.2 REMARK 620 3 SER A 295 O 78.3 179.5 REMARK 620 4 SER A 295 OG 157.5 100.1 79.4 REMARK 620 5 ASN A 327 OD1 78.8 83.8 96.3 101.0 REMARK 620 6 ABU A 701 O 87.4 93.0 87.1 94.2 164.7 REMARK 620 N 1 2 3 4 5 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 7Y7V RELATED DB: PDB REMARK 900 RELATED ID: 7Y7X RELATED DB: PDB REMARK 900 RELATED ID: 7Y7Y RELATED DB: PDB REMARK 900 RELATED ID: 7Y7Z RELATED DB: PDB REMARK 900 RELATED ID: EMD-33671 RELATED DB: EMDB REMARK 900 RELATED ID: EMD-33672 RELATED DB: EMDB REMARK 900 CRYO-EM STRUCTURE OF HUMAN GABA TRANSPORTER GAT1 BOUND WITH GABA IN REMARK 900 NACL SOLUTION IN AN INWARD-OCCLUDED STATE AT 2.4 ANGSTROM REMARK 900 RELATED ID: EMD-33673 RELATED DB: EMDB REMARK 900 RELATED ID: EMD-33674 RELATED DB: EMDB REMARK 900 RELATED ID: EMD-33675 RELATED DB: EMDB DBREF 7Y7W A 1 599 UNP P30531 SC6A1_HUMAN 1 599 SEQADV 7Y7W LEU A 600 UNP P30531 EXPRESSION TAG SEQADV 7Y7W GLU A 601 UNP P30531 EXPRESSION TAG SEQADV 7Y7W SER A 602 UNP P30531 EXPRESSION TAG SEQADV 7Y7W GLY A 603 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 604 UNP P30531 EXPRESSION TAG SEQADV 7Y7W GLU A 605 UNP P30531 EXPRESSION TAG SEQADV 7Y7W VAL A 606 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 607 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ALA A 608 UNP P30531 EXPRESSION TAG SEQADV 7Y7W SER A 609 UNP P30531 EXPRESSION TAG SEQADV 7Y7W GLY A 610 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 611 UNP P30531 EXPRESSION TAG SEQADV 7Y7W TYR A 612 UNP P30531 EXPRESSION TAG SEQADV 7Y7W LYS A 613 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 614 UNP P30531 EXPRESSION TAG SEQADV 7Y7W HIS A 615 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 616 UNP P30531 EXPRESSION TAG SEQADV 7Y7W GLY A 617 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 618 UNP P30531 EXPRESSION TAG SEQADV 7Y7W TYR A 619 UNP P30531 EXPRESSION TAG SEQADV 7Y7W LYS A 620 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 621 UNP P30531 EXPRESSION TAG SEQADV 7Y7W HIS A 622 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 623 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ILE A 624 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 625 UNP P30531 EXPRESSION TAG SEQADV 7Y7W TYR A 626 UNP P30531 EXPRESSION TAG SEQADV 7Y7W LYS A 627 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 628 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 629 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 630 UNP P30531 EXPRESSION TAG SEQADV 7Y7W ASP A 631 UNP P30531 EXPRESSION TAG SEQADV 7Y7W LYS A 632 UNP P30531 EXPRESSION TAG SEQRES 1 A 632 MET ALA THR ASN GLY SER LYS VAL ALA ASP GLY GLN ILE SEQRES 2 A 632 SER THR GLU VAL SER GLU ALA PRO VAL ALA ASN ASP LYS SEQRES 3 A 632 PRO LYS THR LEU VAL VAL LYS VAL GLN LYS LYS ALA ALA SEQRES 4 A 632 ASP LEU PRO ASP ARG ASP THR TRP LYS GLY ARG PHE ASP SEQRES 5 A 632 PHE LEU MET SER CYS VAL GLY TYR ALA ILE GLY LEU GLY SEQRES 6 A 632 ASN VAL TRP ARG PHE PRO TYR LEU CYS GLY LYS ASN GLY SEQRES 7 A 632 GLY GLY ALA PHE LEU ILE PRO TYR PHE LEU THR LEU ILE SEQRES 8 A 632 PHE ALA GLY VAL PRO LEU PHE LEU LEU GLU CYS SER LEU SEQRES 9 A 632 GLY GLN TYR THR SER ILE GLY GLY LEU GLY VAL TRP LYS SEQRES 10 A 632 LEU ALA PRO MET PHE LYS GLY VAL GLY LEU ALA ALA ALA SEQRES 11 A 632 VAL LEU SER PHE TRP LEU ASN ILE TYR TYR ILE VAL ILE SEQRES 12 A 632 ILE SER TRP ALA ILE TYR TYR LEU TYR ASN SER PHE THR SEQRES 13 A 632 THR THR LEU PRO TRP LYS GLN CYS ASP ASN PRO TRP ASN SEQRES 14 A 632 THR ASP ARG CYS PHE SER ASN TYR SER MET VAL ASN THR SEQRES 15 A 632 THR ASN MET THR SER ALA VAL VAL GLU PHE TRP GLU ARG SEQRES 16 A 632 ASN MET HIS GLN MET THR ASP GLY LEU ASP LYS PRO GLY SEQRES 17 A 632 GLN ILE ARG TRP PRO LEU ALA ILE THR LEU ALA ILE ALA SEQRES 18 A 632 TRP ILE LEU VAL TYR PHE CYS ILE TRP LYS GLY VAL GLY SEQRES 19 A 632 TRP THR GLY LYS VAL VAL TYR PHE SER ALA THR TYR PRO SEQRES 20 A 632 TYR ILE MET LEU ILE ILE LEU PHE PHE ARG GLY VAL THR SEQRES 21 A 632 LEU PRO GLY ALA LYS GLU GLY ILE LEU PHE TYR ILE THR SEQRES 22 A 632 PRO ASN PHE ARG LYS LEU SER ASP SER GLU VAL TRP LEU SEQRES 23 A 632 ASP ALA ALA THR GLN ILE PHE PHE SER TYR GLY LEU GLY SEQRES 24 A 632 LEU GLY SER LEU ILE ALA LEU GLY SER TYR ASN SER PHE SEQRES 25 A 632 HIS ASN ASN VAL TYR ARG ASP SER ILE ILE VAL CYS CYS SEQRES 26 A 632 ILE ASN SER CYS THR SER MET PHE ALA GLY PHE VAL ILE SEQRES 27 A 632 PHE SER ILE VAL GLY PHE MET ALA HIS VAL THR LYS ARG SEQRES 28 A 632 SER ILE ALA ASP VAL ALA ALA SER GLY PRO GLY LEU ALA SEQRES 29 A 632 PHE LEU ALA TYR PRO GLU ALA VAL THR GLN LEU PRO ILE SEQRES 30 A 632 SER PRO LEU TRP ALA ILE LEU PHE PHE SER MET LEU LEU SEQRES 31 A 632 MET LEU GLY ILE ASP SER GLN PHE CYS THR VAL GLU GLY SEQRES 32 A 632 PHE ILE THR ALA LEU VAL ASP GLU TYR PRO ARG LEU LEU SEQRES 33 A 632 ARG ASN ARG ARG GLU LEU PHE ILE ALA ALA VAL CYS ILE SEQRES 34 A 632 ILE SER TYR LEU ILE GLY LEU SER ASN ILE THR GLN GLY SEQRES 35 A 632 GLY ILE TYR VAL PHE LYS LEU PHE ASP TYR TYR SER ALA SEQRES 36 A 632 SER GLY MET SER LEU LEU PHE LEU VAL PHE PHE GLU CYS SEQRES 37 A 632 VAL SER ILE SER TRP PHE TYR GLY VAL ASN ARG PHE TYR SEQRES 38 A 632 ASP ASN ILE GLN GLU MET VAL GLY SER ARG PRO CYS ILE SEQRES 39 A 632 TRP TRP LYS LEU CYS TRP SER PHE PHE THR PRO ILE ILE SEQRES 40 A 632 VAL ALA GLY VAL PHE ILE PHE SER ALA VAL GLN MET THR SEQRES 41 A 632 PRO LEU THR MET GLY ASN TYR VAL PHE PRO LYS TRP GLY SEQRES 42 A 632 GLN GLY VAL GLY TRP LEU MET ALA LEU SER SER MET VAL SEQRES 43 A 632 LEU ILE PRO GLY TYR MET ALA TYR MET PHE LEU THR LEU SEQRES 44 A 632 LYS GLY SER LEU LYS GLN ARG ILE GLN VAL MET VAL GLN SEQRES 45 A 632 PRO SER GLU ASP ILE VAL ARG PRO GLU ASN GLY PRO GLU SEQRES 46 A 632 GLN PRO GLN ALA GLY SER SER THR SER LYS GLU ALA TYR SEQRES 47 A 632 ILE LEU GLU SER GLY ASP GLU VAL ASP ALA SER GLY ASP SEQRES 48 A 632 TYR LYS ASP HIS ASP GLY ASP TYR LYS ASP HIS ASP ILE SEQRES 49 A 632 ASP TYR LYS ASP ASP ASP ASP LYS HET ABU A 701 7 HET NAG A 702 14 HET NAG A 703 14 HET NAG A 704 14 HET NA A 705 1 HET NA A 706 1 HET CL A 707 1 HETNAM ABU GAMMA-AMINO-BUTANOIC ACID HETNAM NAG 2-ACETAMIDO-2-DEOXY-BETA-D-GLUCOPYRANOSE HETNAM NA SODIUM ION HETNAM CL CHLORIDE ION HETSYN ABU GAMMA(AMINO)-BUTYRIC ACID HETSYN NAG N-ACETYL-BETA-D-GLUCOSAMINE; 2-ACETAMIDO-2-DEOXY-BETA- HETSYN 2 NAG D-GLUCOSE; 2-ACETAMIDO-2-DEOXY-D-GLUCOSE; 2-ACETAMIDO- HETSYN 3 NAG 2-DEOXY-GLUCOSE; N-ACETYL-D-GLUCOSAMINE FORMUL 2 ABU C4 H9 N O2 FORMUL 3 NAG 3(C8 H15 N O6) FORMUL 6 NA 2(NA 1+) FORMUL 8 CL CL 1- FORMUL 9 HOH *48(H2 O) HELIX 1 AA1 ASP A 52 ILE A 62 1 11 HELIX 2 AA2 GLY A 63 TRP A 68 1 6 HELIX 3 AA3 TRP A 68 ASN A 77 1 10 HELIX 4 AA4 GLY A 79 ALA A 81 5 3 HELIX 5 AA5 PHE A 82 ALA A 93 1 12 HELIX 6 AA6 ALA A 93 SER A 109 1 17 HELIX 7 AA7 GLY A 114 LEU A 118 5 5 HELIX 8 AA8 ALA A 119 MET A 121 5 3 HELIX 9 AA9 PHE A 122 SER A 154 1 33 HELIX 10 AB1 LEU A 159 GLN A 163 5 5 HELIX 11 AB2 SER A 187 ASN A 196 1 10 HELIX 12 AB3 ARG A 211 TRP A 230 1 20 HELIX 13 AB4 GLY A 234 LYS A 238 5 5 HELIX 14 AB5 VAL A 239 VAL A 259 1 21 HELIX 15 AB6 GLY A 263 THR A 273 1 11 HELIX 16 AB7 ASN A 275 SER A 280 5 6 HELIX 17 AB8 ASP A 281 GLY A 297 1 17 HELIX 18 AB9 GLY A 301 SER A 308 1 8 HELIX 19 AC1 ASN A 315 LYS A 350 1 36 HELIX 20 AC2 SER A 352 ALA A 358 1 7 HELIX 21 AC3 GLY A 362 GLN A 374 1 13 HELIX 22 AC4 ILE A 377 TYR A 412 1 36 HELIX 23 AC5 TYR A 412 ARG A 417 1 6 HELIX 24 AC6 ARG A 419 GLY A 435 1 17 HELIX 25 AC7 LEU A 436 THR A 440 5 5 HELIX 26 AC8 GLY A 442 SER A 454 1 13 HELIX 27 AC9 SER A 456 PHE A 474 1 19 HELIX 28 AD1 GLY A 476 GLY A 489 1 14 HELIX 29 AD2 CYS A 493 PHE A 502 1 10 HELIX 30 AD3 PHE A 502 GLN A 518 1 17 HELIX 31 AD4 PRO A 530 VAL A 546 1 17 HELIX 32 AD5 VAL A 546 LEU A 559 1 14 HELIX 33 AD6 SER A 562 VAL A 569 1 8 HELIX 34 AD7 MET A 570 GLN A 572 5 3 SHEET 1 AA1 2 THR A 523 MET A 524 0 SHEET 2 AA1 2 TYR A 527 VAL A 528 -1 O TYR A 527 N MET A 524 SSBOND 1 CYS A 164 CYS A 173 1555 1555 2.08 LINK ND2 ASN A 176 C1 NAG A 703 1555 1555 1.59 LINK ND2 ASN A 181 C1 NAG A 702 1555 1555 1.53 LINK ND2 ASN A 184 C1 NAG A 704 1555 1555 1.50 LINK O GLY A 59 NA NA A 706 1555 1555 2.31 LINK O ALA A 61 NA NA A 705 1555 1555 2.25 LINK O ILE A 62 NA NA A 706 1555 1555 2.48 LINK OD1 ASN A 66 NA NA A 705 1555 1555 2.24 LINK O SER A 295 NA NA A 705 1555 1555 2.80 LINK OG SER A 295 NA NA A 705 1555 1555 2.43 LINK OD1 ASN A 327 NA NA A 705 1555 1555 2.74 LINK O LEU A 392 NA NA A 706 1555 1555 2.78 LINK OD2 ASP A 395 NA NA A 706 1555 1555 2.35 LINK O ABU A 701 NA NA A 705 1555 1555 2.26 LINK NA NA A 706 O HOH A 836 1555 1555 2.29 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