HEADER MEMBRANE PROTEIN 17-JUN-22 7Y5H TITLE CRYO-EM STRUCTURE OF A EUKARYOTIC ZNT8 AT A LOW PH COMPND MOL_ID: 1; COMPND 2 MOLECULE: ZINC TRANSPORTER 8; COMPND 3 CHAIN: B, A; COMPND 4 SYNONYM: ZNT-8,SOLUTE CARRIER FAMILY 30 MEMBER 8; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: XENOPUS TROPICALIS; SOURCE 3 ORGANISM_COMMON: TROPICAL CLAWED FROG; SOURCE 4 ORGANISM_TAXID: 8364; SOURCE 5 GENE: SLC30A8; SOURCE 6 EXPRESSION_SYSTEM: KOMAGATAELLA PASTORIS; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 4922 KEYWDS ZINC TRANSPORTER, SLC30, ZNT, CDF, PROTON-COUPLED ANTIPORTER, KEYWDS 2 MEMBRANE PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR S.ZHANG,C.FU,Y.LUO,Z.SUN,Z.SU,X.ZHOU REVDAT 3 03-JUL-24 7Y5H 1 REMARK REVDAT 2 21-DEC-22 7Y5H 1 JRNL REVDAT 1 14-DEC-22 7Y5H 0 JRNL AUTH S.ZHANG,C.FU,Y.LUO,Q.XIE,T.XU,Z.SUN,Z.SU,X.ZHOU JRNL TITL CRYO-EM STRUCTURE OF A EUKARYOTIC ZINC TRANSPORTER AT A LOW JRNL TITL 2 PH SUGGESTS ITS ZN 2+ -RELEASING MECHANISM. JRNL REF J.STRUCT.BIOL. V. 215 07926 2022 JRNL REFN ESSN 1095-8657 JRNL PMID 36464198 JRNL DOI 10.1016/J.JSB.2022.107926 REMARK 2 REMARK 2 RESOLUTION. 3.72 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : RELION, EPU, COOT, PHENIX, RELION, REMARK 3 RELION, RELION, CRYOSPARC REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : 6XPE 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) : 3.720 REMARK 3 NUMBER OF PARTICLES : 101706 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 7Y5H COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 21-JUN-22. REMARK 100 THE DEPOSITION ID IS D_1300030287. 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 : XTZNT8 DIMER COMPLEXED WITH REMARK 245 ZINC AND PROTON REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 8.00 REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : BLOT FOR 2-3 S 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 : NULL REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : FEI TITAN KRIOS REMARK 245 DETECTOR TYPE : GATAN K2 SUMMIT (4K X 4K) REMARK 245 MINIMUM DEFOCUS (NM) : -1100.00 REMARK 245 MAXIMUM DEFOCUS (NM) : -1700.00 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) : 6390.00 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: DIMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, 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 B 1 REMARK 465 LYS B 2 REMARK 465 GLY B 3 REMARK 465 SER B 4 REMARK 465 GLU B 5 REMARK 465 GLU B 6 REMARK 465 ALA B 7 REMARK 465 TYR B 8 REMARK 465 LEU B 9 REMARK 465 VAL B 10 REMARK 465 SER B 11 REMARK 465 ASP B 12 REMARK 465 LYS B 13 REMARK 465 ALA B 14 REMARK 465 THR B 15 REMARK 465 LYS B 16 REMARK 465 MET B 17 REMARK 465 TYR B 18 REMARK 465 SER B 19 REMARK 465 LEU B 20 REMARK 465 THR B 21 REMARK 465 LYS B 22 REMARK 465 ASP B 23 REMARK 465 SER B 24 REMARK 465 GLU B 25 REMARK 465 LYS B 26 REMARK 465 ASN B 27 REMARK 465 HIS B 28 REMARK 465 PRO B 29 REMARK 465 SER B 30 REMARK 465 LYS B 31 REMARK 465 PRO B 32 REMARK 465 PRO B 33 REMARK 465 LEU B 34 REMARK 465 GLN B 35 REMARK 465 ASP B 36 REMARK 465 GLU B 37 REMARK 465 GLU B 38 REMARK 465 ASN B 39 REMARK 465 PRO B 40 REMARK 465 GLN B 41 REMARK 465 SER B 42 REMARK 465 ALA B 89 REMARK 465 GLY B 90 REMARK 465 SER B 91 REMARK 465 TYR B 165 REMARK 465 THR B 166 REMARK 465 ILE B 167 REMARK 465 ASP B 168 REMARK 465 GLY B 169 REMARK 465 GLN B 192 REMARK 465 SER B 193 REMARK 465 GLY B 194 REMARK 465 HIS B 195 REMARK 465 GLY B 196 REMARK 465 HIS B 197 REMARK 465 SER B 198 REMARK 465 HIS B 199 REMARK 465 ALA B 200 REMARK 465 GLY B 201 REMARK 465 GLY B 202 REMARK 465 LYS B 203 REMARK 465 HIS B 204 REMARK 465 GLU B 205 REMARK 465 HIS B 206 REMARK 465 MET B 207 REMARK 465 ALA B 208 REMARK 465 SER B 209 REMARK 465 GLU B 210 REMARK 465 TYR B 211 REMARK 465 GLU B 371 REMARK 465 PRO B 372 REMARK 465 THR B 373 REMARK 465 GLN B 374 REMARK 465 MET A 1 REMARK 465 LYS A 2 REMARK 465 GLY A 3 REMARK 465 SER A 4 REMARK 465 GLU A 5 REMARK 465 GLU A 6 REMARK 465 ALA A 7 REMARK 465 TYR A 8 REMARK 465 LEU A 9 REMARK 465 VAL A 10 REMARK 465 SER A 11 REMARK 465 ASP A 12 REMARK 465 LYS A 13 REMARK 465 ALA A 14 REMARK 465 THR A 15 REMARK 465 LYS A 16 REMARK 465 MET A 17 REMARK 465 TYR A 18 REMARK 465 SER A 19 REMARK 465 LEU A 20 REMARK 465 THR A 21 REMARK 465 LYS A 22 REMARK 465 ASP A 23 REMARK 465 SER A 24 REMARK 465 GLU A 25 REMARK 465 LYS A 26 REMARK 465 ASN A 27 REMARK 465 HIS A 28 REMARK 465 PRO A 29 REMARK 465 SER A 30 REMARK 465 LYS A 31 REMARK 465 PRO A 32 REMARK 465 PRO A 33 REMARK 465 LEU A 34 REMARK 465 GLN A 35 REMARK 465 ASP A 36 REMARK 465 GLU A 37 REMARK 465 GLU A 38 REMARK 465 ASN A 39 REMARK 465 PRO A 40 REMARK 465 GLN A 41 REMARK 465 SER A 42 REMARK 465 ALA A 89 REMARK 465 GLY A 90 REMARK 465 SER A 91 REMARK 465 TYR A 165 REMARK 465 THR A 166 REMARK 465 ILE A 167 REMARK 465 ASP A 168 REMARK 465 GLY A 169 REMARK 465 GLN A 192 REMARK 465 SER A 193 REMARK 465 GLY A 194 REMARK 465 HIS A 195 REMARK 465 GLY A 196 REMARK 465 HIS A 197 REMARK 465 SER A 198 REMARK 465 HIS A 199 REMARK 465 ALA A 200 REMARK 465 GLY A 201 REMARK 465 GLY A 202 REMARK 465 LYS A 203 REMARK 465 HIS A 204 REMARK 465 GLU A 205 REMARK 465 HIS A 206 REMARK 465 MET A 207 REMARK 465 ALA A 208 REMARK 465 SER A 209 REMARK 465 GLU A 210 REMARK 465 TYR A 211 REMARK 465 GLU A 371 REMARK 465 PRO A 372 REMARK 465 THR A 373 REMARK 465 GLN A 374 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 ZN B 402 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 45 NE2 REMARK 620 2 HIS B 47 ND1 89.7 REMARK 620 3 CYS A 366 SG 110.9 140.8 REMARK 620 4 CYS A 369 SG 100.9 89.9 116.7 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A 402 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS B 46 SG REMARK 620 2 HIS A 306 NE2 144.2 REMARK 620 3 HIS A 323 ND1 114.6 92.0 REMARK 620 4 GLU A 357 OE1 104.7 84.3 113.2 REMARK 620 5 GLU A 357 OE2 97.6 115.4 66.4 56.4 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN B 401 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 306 NE2 REMARK 620 2 HIS B 323 ND1 91.9 REMARK 620 3 GLU B 357 OE1 85.0 112.9 REMARK 620 4 GLU B 357 OE2 114.6 66.4 55.3 REMARK 620 5 CYS A 46 SG 143.3 113.5 107.0 100.2 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A 401 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS B 366 SG REMARK 620 2 CYS B 369 SG 115.7 REMARK 620 3 HIS A 45 NE2 116.4 106.6 REMARK 620 4 HIS A 47 ND1 134.7 93.2 84.0 REMARK 620 N 1 2 3 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-33619 RELATED DB: EMDB REMARK 900 RELATED ID: 7Y5G RELATED DB: PDB REMARK 900 RELATED ID: EMD-33620 RELATED DB: EMDB REMARK 900 CRYO-EM STRUCTURE OF A EUKARYOTIC ZNT8 AT A LOW PH DBREF 7Y5H B 1 374 UNP Q5XHB4 ZNT8_XENTR 1 374 DBREF 7Y5H A 1 374 UNP Q5XHB4 ZNT8_XENTR 1 374 SEQRES 1 B 374 MET LYS GLY SER GLU GLU ALA TYR LEU VAL SER ASP LYS SEQRES 2 B 374 ALA THR LYS MET TYR SER LEU THR LYS ASP SER GLU LYS SEQRES 3 B 374 ASN HIS PRO SER LYS PRO PRO LEU GLN ASP GLU GLU ASN SEQRES 4 B 374 PRO GLN SER LYS TYR HIS CYS HIS ASN ASN ASN LYS LYS SEQRES 5 B 374 ALA TYR ASP ALA ARG GLN ARG GLU GLN THR PHE ALA LYS SEQRES 6 B 374 LYS LYS LEU CYS ILE ALA SER LEU ILE CYS PHE VAL PHE SEQRES 7 B 374 ILE SER ALA GLU ILE VAL GLY GLY TYR ILE ALA GLY SER SEQRES 8 B 374 LEU ALA VAL VAL THR ASP ALA ALA HIS LEU LEU VAL ASP SEQRES 9 B 374 LEU SER SER PHE PHE ILE SER LEU CYS SER LEU TRP LEU SEQRES 10 B 374 SER SER LYS SER SER THR THR ARG LEU THR PHE GLY TRP SEQRES 11 B 374 HIS ARG ALA GLU ILE LEU GLY ALA LEU MET SER VAL ILE SEQRES 12 B 374 THR ILE TRP LEU VAL THR GLY VAL LEU VAL TYR LEU ALA SEQRES 13 B 374 CYS GLU ARG LEU ILE ARG PRO ASP TYR THR ILE ASP GLY SEQRES 14 B 374 THR VAL MET LEU ILE THR SER ALA CYS ALA LEU GLY ALA SEQRES 15 B 374 ASN LEU VAL LEU ALA LEU ILE LEU HIS GLN SER GLY HIS SEQRES 16 B 374 GLY HIS SER HIS ALA GLY GLY LYS HIS GLU HIS MET ALA SEQRES 17 B 374 SER GLU TYR LYS PRO GLN THR ASN ALA SER ILE ARG ALA SEQRES 18 B 374 ALA PHE ILE HIS VAL ILE GLY ASP LEU PHE GLN SER ILE SEQRES 19 B 374 SER VAL LEU ILE SER ALA LEU ILE ILE TYR PHE LYS PRO SEQRES 20 B 374 GLU TYR LYS MET ALA ASP PRO ILE CYS THR PHE ILE PHE SEQRES 21 B 374 SER ILE PHE VAL LEU ILE THR THR VAL THR VAL LEU ARG SEQRES 22 B 374 ASP LEU LEU THR VAL LEU MET GLU GLY THR PRO ARG GLY SEQRES 23 B 374 ILE HIS TYR SER ASP VAL LYS GLN SER ILE LEU ALA VAL SEQRES 24 B 374 ASP GLY VAL LYS SER VAL HIS SER LEU HIS LEU TRP ALA SEQRES 25 B 374 LEU THR MET ASN GLN VAL ILE LEU SER ALA HIS ILE ALA SEQRES 26 B 374 THR ASP ILE VAL GLY GLU SER LYS ARG ILE LEU LYS ASP SEQRES 27 B 374 VAL THR GLN ASN VAL PHE ALA ARG PHE PRO PHE HIS SER SEQRES 28 B 374 VAL THR ILE GLN VAL GLU PRO ILE GLU ASP GLN SER PRO SEQRES 29 B 374 GLU CYS MET PHE CYS TYR GLU PRO THR GLN SEQRES 1 A 374 MET LYS GLY SER GLU GLU ALA TYR LEU VAL SER ASP LYS SEQRES 2 A 374 ALA THR LYS MET TYR SER LEU THR LYS ASP SER GLU LYS SEQRES 3 A 374 ASN HIS PRO SER LYS PRO PRO LEU GLN ASP GLU GLU ASN SEQRES 4 A 374 PRO GLN SER LYS TYR HIS CYS HIS ASN ASN ASN LYS LYS SEQRES 5 A 374 ALA TYR ASP ALA ARG GLN ARG GLU GLN THR PHE ALA LYS SEQRES 6 A 374 LYS LYS LEU CYS ILE ALA SER LEU ILE CYS PHE VAL PHE SEQRES 7 A 374 ILE SER ALA GLU ILE VAL GLY GLY TYR ILE ALA GLY SER SEQRES 8 A 374 LEU ALA VAL VAL THR ASP ALA ALA HIS LEU LEU VAL ASP SEQRES 9 A 374 LEU SER SER PHE PHE ILE SER LEU CYS SER LEU TRP LEU SEQRES 10 A 374 SER SER LYS SER SER THR THR ARG LEU THR PHE GLY TRP SEQRES 11 A 374 HIS ARG ALA GLU ILE LEU GLY ALA LEU MET SER VAL ILE SEQRES 12 A 374 THR ILE TRP LEU VAL THR GLY VAL LEU VAL TYR LEU ALA SEQRES 13 A 374 CYS GLU ARG LEU ILE ARG PRO ASP TYR THR ILE ASP GLY SEQRES 14 A 374 THR VAL MET LEU ILE THR SER ALA CYS ALA LEU GLY ALA SEQRES 15 A 374 ASN LEU VAL LEU ALA LEU ILE LEU HIS GLN SER GLY HIS SEQRES 16 A 374 GLY HIS SER HIS ALA GLY GLY LYS HIS GLU HIS MET ALA SEQRES 17 A 374 SER GLU TYR LYS PRO GLN THR ASN ALA SER ILE ARG ALA SEQRES 18 A 374 ALA PHE ILE HIS VAL ILE GLY ASP LEU PHE GLN SER ILE SEQRES 19 A 374 SER VAL LEU ILE SER ALA LEU ILE ILE TYR PHE LYS PRO SEQRES 20 A 374 GLU TYR LYS MET ALA ASP PRO ILE CYS THR PHE ILE PHE SEQRES 21 A 374 SER ILE PHE VAL LEU ILE THR THR VAL THR VAL LEU ARG SEQRES 22 A 374 ASP LEU LEU THR VAL LEU MET GLU GLY THR PRO ARG GLY SEQRES 23 A 374 ILE HIS TYR SER ASP VAL LYS GLN SER ILE LEU ALA VAL SEQRES 24 A 374 ASP GLY VAL LYS SER VAL HIS SER LEU HIS LEU TRP ALA SEQRES 25 A 374 LEU THR MET ASN GLN VAL ILE LEU SER ALA HIS ILE ALA SEQRES 26 A 374 THR ASP ILE VAL GLY GLU SER LYS ARG ILE LEU LYS ASP SEQRES 27 A 374 VAL THR GLN ASN VAL PHE ALA ARG PHE PRO PHE HIS SER SEQRES 28 A 374 VAL THR ILE GLN VAL GLU PRO ILE GLU ASP GLN SER PRO SEQRES 29 A 374 GLU CYS MET PHE CYS TYR GLU PRO THR GLN HET ZN B 401 1 HET ZN B 402 1 HET ZN A 401 1 HET ZN A 402 1 HETNAM ZN ZINC ION FORMUL 3 ZN 4(ZN 2+) HELIX 1 AA1 HIS B 47 ASN B 50 5 4 HELIX 2 AA2 LYS B 51 ILE B 88 1 38 HELIX 3 AA3 VAL B 94 SER B 118 1 25 HELIX 4 AA4 GLY B 129 HIS B 131 5 3 HELIX 5 AA5 ARG B 132 GLU B 158 1 27 HELIX 6 AA6 VAL B 171 HIS B 191 1 21 HELIX 7 AA7 SER B 218 ASP B 229 1 12 HELIX 8 AA8 ASP B 229 LYS B 246 1 18 HELIX 9 AA9 MET B 251 THR B 268 1 18 HELIX 10 AB1 THR B 268 MET B 280 1 13 HELIX 11 AB2 HIS B 288 ALA B 298 1 11 HELIX 12 AB3 GLU B 331 ALA B 345 1 15 HELIX 13 AB4 GLU B 360 GLN B 362 5 3 HELIX 14 AB5 HIS A 47 ASN A 50 5 4 HELIX 15 AB6 LYS A 51 ILE A 88 1 38 HELIX 16 AB7 THR A 96 SER A 118 1 23 HELIX 17 AB8 GLY A 129 HIS A 131 5 3 HELIX 18 AB9 ARG A 132 GLU A 158 1 27 HELIX 19 AC1 VAL A 171 HIS A 191 1 21 HELIX 20 AC2 SER A 218 ASP A 229 1 12 HELIX 21 AC3 ASP A 229 LYS A 246 1 18 HELIX 22 AC4 MET A 251 THR A 267 1 17 HELIX 23 AC5 THR A 268 MET A 280 1 13 HELIX 24 AC6 HIS A 288 ALA A 298 1 11 HELIX 25 AC7 GLU A 331 ALA A 345 1 15 HELIX 26 AC8 GLU A 360 GLN A 362 5 3 SHEET 1 AA1 3 VAL B 302 THR B 314 0 SHEET 2 AA1 3 GLN B 317 THR B 326 -1 O ALA B 325 N LYS B 303 SHEET 3 AA1 3 SER B 351 PRO B 358 1 O GLU B 357 N ILE B 324 SHEET 1 AA2 3 VAL A 302 THR A 314 0 SHEET 2 AA2 3 GLN A 317 THR A 326 -1 O ALA A 325 N LYS A 303 SHEET 3 AA2 3 SER A 351 PRO A 358 1 O GLU A 357 N ILE A 324 LINK NE2 HIS B 45 ZN ZN B 402 1555 1555 2.04 LINK SG CYS B 46 ZN ZN A 402 1555 1555 2.30 LINK ND1 HIS B 47 ZN ZN B 402 1555 1555 2.04 LINK NE2 HIS B 306 ZN ZN B 401 1555 1555 2.30 LINK ND1 HIS B 323 ZN ZN B 401 1555 1555 2.30 LINK OE1 GLU B 357 ZN ZN B 401 1555 1555 2.58 LINK OE2 GLU B 357 ZN ZN B 401 1555 1555 2.03 LINK SG CYS B 366 ZN ZN A 401 1555 1555 2.31 LINK SG CYS B 369 ZN ZN A 401 1555 1555 2.31 LINK ZN ZN B 401 SG CYS A 46 1555 1555 2.30 LINK ZN ZN B 402 SG CYS A 366 1555 1555 2.31 LINK ZN ZN B 402 SG CYS A 369 1555 1555 2.31 LINK NE2 HIS A 45 ZN ZN A 401 1555 1555 2.04 LINK ND1 HIS A 47 ZN ZN A 401 1555 1555 2.04 LINK NE2 HIS A 306 ZN ZN A 402 1555 1555 2.30 LINK ND1 HIS A 323 ZN ZN A 402 1555 1555 2.30 LINK OE1 GLU A 357 ZN ZN A 402 1555 1555 2.52 LINK OE2 GLU A 357 ZN ZN A 402 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