HEADER MEMBRANE PROTEIN 20-NOV-24 9EFZ TITLE CHICKEN BEST1 BOUND TO GABA IN AN OPEN STATE COMPND MOL_ID: 1; COMPND 2 MOLECULE: BESTROPHIN 1; COMPND 3 CHAIN: A, B, C, D, E; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: GALLUS GALLUS; SOURCE 3 ORGANISM_COMMON: CHICKEN; SOURCE 4 ORGANISM_TAXID: 9031; SOURCE 5 GENE: BEST1; SOURCE 6 EXPRESSION_SYSTEM: KOMAGATAELLA PASTORIS; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 4922 KEYWDS BESTROPHIN, ION CHANNEL, GABA, MEMBRANE PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR S.PANT,S.B.LONG REVDAT 3 28-MAY-25 9EFZ 1 REMARK REVDAT 2 30-APR-25 9EFZ 1 JRNL REVDAT 1 09-APR-25 9EFZ 0 JRNL AUTH S.PANT,S.W.TAM,S.B.LONG JRNL TITL THE PENTAMERIC CHLORIDE CHANNEL BEST1 IS ACTIVATED BY JRNL TITL 2 EXTRACELLULAR GABA. JRNL REF PROC.NATL.ACAD.SCI.USA V. 122 74122 2025 JRNL REFN ESSN 1091-6490 JRNL PMID 40249777 JRNL DOI 10.1073/PNAS.2424474122 REMARK 2 REMARK 2 RESOLUTION. 1.95 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 : 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) : 1.950 REMARK 3 NUMBER OF PARTICLES : 987499 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 9EFZ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 21-NOV-24. REMARK 100 THE DEPOSITION ID IS D_1000290340. 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 : CHICKEN BEST1 BOUND TO GABA IN REMARK 245 AN OPEN STATE REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : NULL 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 : TFS KRIOS REMARK 245 DETECTOR TYPE : FEI FALCON IV (4K X 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 : NULL REMARK 245 IMAGING MODE : BRIGHT FIELD REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 4370.00 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: PENTAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: PENTAMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D, E 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 ASP A 342 REMARK 465 PRO A 343 REMARK 465 GLN A 344 REMARK 465 GLU A 345 REMARK 465 GLY A 346 REMARK 465 GLU A 347 REMARK 465 GLU A 348 REMARK 465 PHE A 349 REMARK 465 ASP B 342 REMARK 465 PRO B 343 REMARK 465 GLN B 344 REMARK 465 GLU B 345 REMARK 465 GLY B 346 REMARK 465 GLU B 347 REMARK 465 GLU B 348 REMARK 465 PHE B 349 REMARK 465 ASP C 342 REMARK 465 PRO C 343 REMARK 465 GLN C 344 REMARK 465 GLU C 345 REMARK 465 GLY C 346 REMARK 465 GLU C 347 REMARK 465 GLU C 348 REMARK 465 PHE C 349 REMARK 465 ASP D 342 REMARK 465 PRO D 343 REMARK 465 GLN D 344 REMARK 465 GLU D 345 REMARK 465 GLY D 346 REMARK 465 GLU D 347 REMARK 465 GLU D 348 REMARK 465 PHE D 349 REMARK 465 ASP E 342 REMARK 465 PRO E 343 REMARK 465 GLN E 344 REMARK 465 GLU E 345 REMARK 465 GLY E 346 REMARK 465 GLU E 347 REMARK 465 GLU E 348 REMARK 465 PHE E 349 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 LYS A 169 CG CD CE NZ REMARK 470 LYS B 169 CG CD CE NZ REMARK 470 LYS C 169 CG CD CE NZ REMARK 470 LYS D 169 CG CD CE NZ REMARK 470 LYS E 169 CG CD CE NZ 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 272 -39.63 72.24 REMARK 500 PHE B 272 -39.60 72.18 REMARK 500 PHE C 272 -39.56 72.21 REMARK 500 PHE D 272 -39.61 72.22 REMARK 500 PHE E 272 -39.57 72.16 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 CA E 403 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ALA A 10 O REMARK 620 2 HOH A 502 O 76.0 REMARK 620 3 GLN E 293 O 148.7 73.1 REMARK 620 4 ASN E 296 O 86.1 85.8 96.6 REMARK 620 5 ASP E 301 OD2 88.0 100.1 92.4 170.4 REMARK 620 6 ASP E 304 OD1 130.3 151.6 81.0 85.6 92.5 REMARK 620 7 ASP E 304 OD2 82.7 158.4 128.4 89.8 81.9 48.4 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 401 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLN A 293 O REMARK 620 2 ASN A 296 O 96.5 REMARK 620 3 ASP A 301 OD2 92.4 170.4 REMARK 620 4 ASP A 304 OD1 81.1 85.6 92.5 REMARK 620 5 ASP A 304 OD2 128.4 89.8 81.9 48.4 REMARK 620 6 ALA B 10 O 148.7 86.1 88.0 130.2 82.6 REMARK 620 7 HOH B 501 O 72.8 85.2 100.8 151.0 158.7 76.4 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA B 402 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLN B 293 O REMARK 620 2 ASN B 296 O 96.5 REMARK 620 3 ASP B 301 OD2 92.4 170.4 REMARK 620 4 ASP B 304 OD1 81.0 85.6 92.5 REMARK 620 5 ASP B 304 OD2 128.4 89.8 81.9 48.4 REMARK 620 6 ALA C 10 O 148.6 86.1 88.0 130.3 82.7 REMARK 620 7 HOH C 501 O 72.4 84.3 101.8 150.2 159.1 76.8 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA C 402 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLN C 293 O REMARK 620 2 ASN C 296 O 96.5 REMARK 620 3 ASP C 301 OD2 92.4 170.4 REMARK 620 4 ASP C 304 OD1 81.0 85.6 92.4 REMARK 620 5 ASP C 304 OD2 128.4 89.8 81.9 48.3 REMARK 620 6 ALA D 10 O 148.7 86.2 87.9 130.2 82.6 REMARK 620 7 HOH D 501 O 72.5 84.9 101.1 150.6 159.0 76.8 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA D 402 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLN D 293 O REMARK 620 2 ASN D 296 O 96.5 REMARK 620 3 ASP D 301 OD2 92.4 170.4 REMARK 620 4 ASP D 304 OD1 81.0 85.6 92.5 REMARK 620 5 ASP D 304 OD2 128.4 89.8 81.9 48.4 REMARK 620 6 ALA E 10 O 148.7 86.2 87.9 130.2 82.7 REMARK 620 7 HOH E 501 O 72.2 84.1 102.0 149.9 159.2 77.1 REMARK 620 N 1 2 3 4 5 6 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-47982 RELATED DB: EMDB REMARK 900 CHICKEN BEST1 BOUND TO GABA IN AN OPEN STATE DBREF1 9EFZ A 2 344 UNP A0A8V0ZZU7_CHICK DBREF2 9EFZ A A0A8V0ZZU7 2 344 DBREF1 9EFZ B 2 344 UNP A0A8V0ZZU7_CHICK DBREF2 9EFZ B A0A8V0ZZU7 2 344 DBREF1 9EFZ C 2 344 UNP A0A8V0ZZU7_CHICK DBREF2 9EFZ C A0A8V0ZZU7 2 344 DBREF1 9EFZ D 2 344 UNP A0A8V0ZZU7_CHICK DBREF2 9EFZ D A0A8V0ZZU7 2 344 DBREF1 9EFZ E 2 344 UNP A0A8V0ZZU7_CHICK DBREF2 9EFZ E A0A8V0ZZU7 2 344 SEQADV 9EFZ GLU A 345 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLY A 346 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU A 347 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU A 348 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ PHE A 349 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU B 345 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLY B 346 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU B 347 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU B 348 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ PHE B 349 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU C 345 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLY C 346 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU C 347 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU C 348 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ PHE C 349 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU D 345 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLY D 346 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU D 347 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU D 348 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ PHE D 349 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU E 345 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLY E 346 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU E 347 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ GLU E 348 UNP A0A8V0ZZU EXPRESSION TAG SEQADV 9EFZ PHE E 349 UNP A0A8V0ZZU EXPRESSION TAG SEQRES 1 A 348 THR VAL THR TYR THR ASN ARG VAL ALA ASP ALA ARG LEU SEQRES 2 A 348 GLY THR PHE SER GLN LEU LEU LEU GLN TRP LYS GLY SER SEQRES 3 A 348 ILE TYR LYS LEU LEU TYR SER GLU PHE LEU ILE PHE ILE SEQRES 4 A 348 SER LEU TYR PHE ALA ILE SER LEU VAL TYR ARG LEU ILE SEQRES 5 A 348 LEU SER GLU SER GLN ARG LEU MET PHE GLU LYS LEU ALA SEQRES 6 A 348 LEU TYR CYS ASN SER TYR ALA GLU LEU ILE PRO VAL SER SEQRES 7 A 348 PHE VAL LEU GLY PHE TYR VAL SER LEU VAL VAL SER ARG SEQRES 8 A 348 TRP TRP ALA GLN TYR GLU SER ILE PRO TRP PRO ASP ARG SEQRES 9 A 348 ILE MET ASN LEU VAL SER CYS ASN VAL ASP GLY GLU ASP SEQRES 10 A 348 GLU TYR GLY ARG LEU LEU ARG ARG THR LEU MET ARG TYR SEQRES 11 A 348 SER ASN LEU CYS SER VAL LEU ILE LEU ARG SER VAL SER SEQRES 12 A 348 THR ALA VAL TYR LYS ARG PHE PRO SER MET GLU HIS VAL SEQRES 13 A 348 VAL ARG ALA GLY LEU MET THR PRO GLU GLU HIS LYS LYS SEQRES 14 A 348 PHE GLU SER LEU ASN SER PRO HIS ASN LYS PHE TRP ILE SEQRES 15 A 348 PRO CYS VAL TRP PHE SER ASN LEU ALA VAL LYS ALA ARG SEQRES 16 A 348 ASN GLU GLY ARG ILE ARG ASP SER VAL LEU LEU GLN GLY SEQRES 17 A 348 ILE LEU ASN GLU LEU ASN THR LEU ARG SER GLN CYS GLY SEQRES 18 A 348 ARG LEU TYR GLY TYR ASP TRP ILE SER ILE PRO LEU VAL SEQRES 19 A 348 TYR THR GLN VAL VAL THR VAL ALA VAL TYR SER PHE PHE SEQRES 20 A 348 LEU ALA CYS LEU ILE GLY ARG GLN PHE LEU ASP PRO GLU SEQRES 21 A 348 LYS ALA TYR PRO GLY HIS GLU LEU ASP LEU PHE VAL PRO SEQRES 22 A 348 VAL PHE THR PHE LEU GLN PHE PHE PHE TYR ALA GLY TRP SEQRES 23 A 348 LEU LYS VAL ALA GLU GLN LEU ILE ASN PRO PHE GLY GLU SEQRES 24 A 348 ASP ASP ASP ASP PHE GLU THR ASN TRP LEU ILE ASP ARG SEQRES 25 A 348 ASN LEU GLN VAL SER LEU MET ALA VAL ASP GLU MET HIS SEQRES 26 A 348 GLN ASP LEU PRO ILE LEU GLU LYS ASP LEU TYR TRP ASN SEQRES 27 A 348 GLU PRO ASP PRO GLN GLU GLY GLU GLU PHE SEQRES 1 B 348 THR VAL THR TYR THR ASN ARG VAL ALA ASP ALA ARG LEU SEQRES 2 B 348 GLY THR PHE SER GLN LEU LEU LEU GLN TRP LYS GLY SER SEQRES 3 B 348 ILE TYR LYS LEU LEU TYR SER GLU PHE LEU ILE PHE ILE SEQRES 4 B 348 SER LEU TYR PHE ALA ILE SER LEU VAL TYR ARG LEU ILE SEQRES 5 B 348 LEU SER GLU SER GLN ARG LEU MET PHE GLU LYS LEU ALA SEQRES 6 B 348 LEU TYR CYS ASN SER TYR ALA GLU LEU ILE PRO VAL SER SEQRES 7 B 348 PHE VAL LEU GLY PHE TYR VAL SER LEU VAL VAL SER ARG SEQRES 8 B 348 TRP TRP ALA GLN TYR GLU SER ILE PRO TRP PRO ASP ARG SEQRES 9 B 348 ILE MET ASN LEU VAL SER CYS ASN VAL ASP GLY GLU ASP SEQRES 10 B 348 GLU TYR GLY ARG LEU LEU ARG ARG THR LEU MET ARG TYR SEQRES 11 B 348 SER ASN LEU CYS SER VAL LEU ILE LEU ARG SER VAL SER SEQRES 12 B 348 THR ALA VAL TYR LYS ARG PHE PRO SER MET GLU HIS VAL SEQRES 13 B 348 VAL ARG ALA GLY LEU MET THR PRO GLU GLU HIS LYS LYS SEQRES 14 B 348 PHE GLU SER LEU ASN SER PRO HIS ASN LYS PHE TRP ILE SEQRES 15 B 348 PRO CYS VAL TRP PHE SER ASN LEU ALA VAL LYS ALA ARG SEQRES 16 B 348 ASN GLU GLY ARG ILE ARG ASP SER VAL LEU LEU GLN GLY SEQRES 17 B 348 ILE LEU ASN GLU LEU ASN THR LEU ARG SER GLN CYS GLY SEQRES 18 B 348 ARG LEU TYR GLY TYR ASP TRP ILE SER ILE PRO LEU VAL SEQRES 19 B 348 TYR THR GLN VAL VAL THR VAL ALA VAL TYR SER PHE PHE SEQRES 20 B 348 LEU ALA CYS LEU ILE GLY ARG GLN PHE LEU ASP PRO GLU SEQRES 21 B 348 LYS ALA TYR PRO GLY HIS GLU LEU ASP LEU PHE VAL PRO SEQRES 22 B 348 VAL PHE THR PHE LEU GLN PHE PHE PHE TYR ALA GLY TRP SEQRES 23 B 348 LEU LYS VAL ALA GLU GLN LEU ILE ASN PRO PHE GLY GLU SEQRES 24 B 348 ASP ASP ASP ASP PHE GLU THR ASN TRP LEU ILE ASP ARG SEQRES 25 B 348 ASN LEU GLN VAL SER LEU MET ALA VAL ASP GLU MET HIS SEQRES 26 B 348 GLN ASP LEU PRO ILE LEU GLU LYS ASP LEU TYR TRP ASN SEQRES 27 B 348 GLU PRO ASP PRO GLN GLU GLY GLU GLU PHE SEQRES 1 C 348 THR VAL THR TYR THR ASN ARG VAL ALA ASP ALA ARG LEU SEQRES 2 C 348 GLY THR PHE SER GLN LEU LEU LEU GLN TRP LYS GLY SER SEQRES 3 C 348 ILE TYR LYS LEU LEU TYR SER GLU PHE LEU ILE PHE ILE SEQRES 4 C 348 SER LEU TYR PHE ALA ILE SER LEU VAL TYR ARG LEU ILE SEQRES 5 C 348 LEU SER GLU SER GLN ARG LEU MET PHE GLU LYS LEU ALA SEQRES 6 C 348 LEU TYR CYS ASN SER TYR ALA GLU LEU ILE PRO VAL SER SEQRES 7 C 348 PHE VAL LEU GLY PHE TYR VAL SER LEU VAL VAL SER ARG SEQRES 8 C 348 TRP TRP ALA GLN TYR GLU SER ILE PRO TRP PRO ASP ARG SEQRES 9 C 348 ILE MET ASN LEU VAL SER CYS ASN VAL ASP GLY GLU ASP SEQRES 10 C 348 GLU TYR GLY ARG LEU LEU ARG ARG THR LEU MET ARG TYR SEQRES 11 C 348 SER ASN LEU CYS SER VAL LEU ILE LEU ARG SER VAL SER SEQRES 12 C 348 THR ALA VAL TYR LYS ARG PHE PRO SER MET GLU HIS VAL SEQRES 13 C 348 VAL ARG ALA GLY LEU MET THR PRO GLU GLU HIS LYS LYS SEQRES 14 C 348 PHE GLU SER LEU ASN SER PRO HIS ASN LYS PHE TRP ILE SEQRES 15 C 348 PRO CYS VAL TRP PHE SER ASN LEU ALA VAL LYS ALA ARG SEQRES 16 C 348 ASN GLU GLY ARG ILE ARG ASP SER VAL LEU LEU GLN GLY SEQRES 17 C 348 ILE LEU ASN GLU LEU ASN THR LEU ARG SER GLN CYS GLY SEQRES 18 C 348 ARG LEU TYR GLY TYR ASP TRP ILE SER ILE PRO LEU VAL SEQRES 19 C 348 TYR THR GLN VAL VAL THR VAL ALA VAL TYR SER PHE PHE SEQRES 20 C 348 LEU ALA CYS LEU ILE GLY ARG GLN PHE LEU ASP PRO GLU SEQRES 21 C 348 LYS ALA TYR PRO GLY HIS GLU LEU ASP LEU PHE VAL PRO SEQRES 22 C 348 VAL PHE THR PHE LEU GLN PHE PHE PHE TYR ALA GLY TRP SEQRES 23 C 348 LEU LYS VAL ALA GLU GLN LEU ILE ASN PRO PHE GLY GLU SEQRES 24 C 348 ASP ASP ASP ASP PHE GLU THR ASN TRP LEU ILE ASP ARG SEQRES 25 C 348 ASN LEU GLN VAL SER LEU MET ALA VAL ASP GLU MET HIS SEQRES 26 C 348 GLN ASP LEU PRO ILE LEU GLU LYS ASP LEU TYR TRP ASN SEQRES 27 C 348 GLU PRO ASP PRO GLN GLU GLY GLU GLU PHE SEQRES 1 D 348 THR VAL THR TYR THR ASN ARG VAL ALA ASP ALA ARG LEU SEQRES 2 D 348 GLY THR PHE SER GLN LEU LEU LEU GLN TRP LYS GLY SER SEQRES 3 D 348 ILE TYR LYS LEU LEU TYR SER GLU PHE LEU ILE PHE ILE SEQRES 4 D 348 SER LEU TYR PHE ALA ILE SER LEU VAL TYR ARG LEU ILE SEQRES 5 D 348 LEU SER GLU SER GLN ARG LEU MET PHE GLU LYS LEU ALA SEQRES 6 D 348 LEU TYR CYS ASN SER TYR ALA GLU LEU ILE PRO VAL SER SEQRES 7 D 348 PHE VAL LEU GLY PHE TYR VAL SER LEU VAL VAL SER ARG SEQRES 8 D 348 TRP TRP ALA GLN TYR GLU SER ILE PRO TRP PRO ASP ARG SEQRES 9 D 348 ILE MET ASN LEU VAL SER CYS ASN VAL ASP GLY GLU ASP SEQRES 10 D 348 GLU TYR GLY ARG LEU LEU ARG ARG THR LEU MET ARG TYR SEQRES 11 D 348 SER ASN LEU CYS SER VAL LEU ILE LEU ARG SER VAL SER SEQRES 12 D 348 THR ALA VAL TYR LYS ARG PHE PRO SER MET GLU HIS VAL SEQRES 13 D 348 VAL ARG ALA GLY LEU MET THR PRO GLU GLU HIS LYS LYS SEQRES 14 D 348 PHE GLU SER LEU ASN SER PRO HIS ASN LYS PHE TRP ILE SEQRES 15 D 348 PRO CYS VAL TRP PHE SER ASN LEU ALA VAL LYS ALA ARG SEQRES 16 D 348 ASN GLU GLY ARG ILE ARG ASP SER VAL LEU LEU GLN GLY SEQRES 17 D 348 ILE LEU ASN GLU LEU ASN THR LEU ARG SER GLN CYS GLY SEQRES 18 D 348 ARG LEU TYR GLY TYR ASP TRP ILE SER ILE PRO LEU VAL SEQRES 19 D 348 TYR THR GLN VAL VAL THR VAL ALA VAL TYR SER PHE PHE SEQRES 20 D 348 LEU ALA CYS LEU ILE GLY ARG GLN PHE LEU ASP PRO GLU SEQRES 21 D 348 LYS ALA TYR PRO GLY HIS GLU LEU ASP LEU PHE VAL PRO SEQRES 22 D 348 VAL PHE THR PHE LEU GLN PHE PHE PHE TYR ALA GLY TRP SEQRES 23 D 348 LEU LYS VAL ALA GLU GLN LEU ILE ASN PRO PHE GLY GLU SEQRES 24 D 348 ASP ASP ASP ASP PHE GLU THR ASN TRP LEU ILE ASP ARG SEQRES 25 D 348 ASN LEU GLN VAL SER LEU MET ALA VAL ASP GLU MET HIS SEQRES 26 D 348 GLN ASP LEU PRO ILE LEU GLU LYS ASP LEU TYR TRP ASN SEQRES 27 D 348 GLU PRO ASP PRO GLN GLU GLY GLU GLU PHE SEQRES 1 E 348 THR VAL THR TYR THR ASN ARG VAL ALA ASP ALA ARG LEU SEQRES 2 E 348 GLY THR PHE SER GLN LEU LEU LEU GLN TRP LYS GLY SER SEQRES 3 E 348 ILE TYR LYS LEU LEU TYR SER GLU PHE LEU ILE PHE ILE SEQRES 4 E 348 SER LEU TYR PHE ALA ILE SER LEU VAL TYR ARG LEU ILE SEQRES 5 E 348 LEU SER GLU SER GLN ARG LEU MET PHE GLU LYS LEU ALA SEQRES 6 E 348 LEU TYR CYS ASN SER TYR ALA GLU LEU ILE PRO VAL SER SEQRES 7 E 348 PHE VAL LEU GLY PHE TYR VAL SER LEU VAL VAL SER ARG SEQRES 8 E 348 TRP TRP ALA GLN TYR GLU SER ILE PRO TRP PRO ASP ARG SEQRES 9 E 348 ILE MET ASN LEU VAL SER CYS ASN VAL ASP GLY GLU ASP SEQRES 10 E 348 GLU TYR GLY ARG LEU LEU ARG ARG THR LEU MET ARG TYR SEQRES 11 E 348 SER ASN LEU CYS SER VAL LEU ILE LEU ARG SER VAL SER SEQRES 12 E 348 THR ALA VAL TYR LYS ARG PHE PRO SER MET GLU HIS VAL SEQRES 13 E 348 VAL ARG ALA GLY LEU MET THR PRO GLU GLU HIS LYS LYS SEQRES 14 E 348 PHE GLU SER LEU ASN SER PRO HIS ASN LYS PHE TRP ILE SEQRES 15 E 348 PRO CYS VAL TRP PHE SER ASN LEU ALA VAL LYS ALA ARG SEQRES 16 E 348 ASN GLU GLY ARG ILE ARG ASP SER VAL LEU LEU GLN GLY SEQRES 17 E 348 ILE LEU ASN GLU LEU ASN THR LEU ARG SER GLN CYS GLY SEQRES 18 E 348 ARG LEU TYR GLY TYR ASP TRP ILE SER ILE PRO LEU VAL SEQRES 19 E 348 TYR THR GLN VAL VAL THR VAL ALA VAL TYR SER PHE PHE SEQRES 20 E 348 LEU ALA CYS LEU ILE GLY ARG GLN PHE LEU ASP PRO GLU SEQRES 21 E 348 LYS ALA TYR PRO GLY HIS GLU LEU ASP LEU PHE VAL PRO SEQRES 22 E 348 VAL PHE THR PHE LEU GLN PHE PHE PHE TYR ALA GLY TRP SEQRES 23 E 348 LEU LYS VAL ALA GLU GLN LEU ILE ASN PRO PHE GLY GLU SEQRES 24 E 348 ASP ASP ASP ASP PHE GLU THR ASN TRP LEU ILE ASP ARG SEQRES 25 E 348 ASN LEU GLN VAL SER LEU MET ALA VAL ASP GLU MET HIS SEQRES 26 E 348 GLN ASP LEU PRO ILE LEU GLU LYS ASP LEU TYR TRP ASN SEQRES 27 E 348 GLU PRO ASP PRO GLN GLU GLY GLU GLU PHE HET CA A 401 1 HET CL A 402 1 HET ABU A 403 7 HET ABU B 401 7 HET CA B 402 1 HET CL B 403 1 HET ABU C 401 7 HET CA C 402 1 HET CL C 403 1 HET ABU D 401 7 HET CA D 402 1 HET CL D 403 1 HET CL E 401 1 HET ABU E 402 7 HET CA E 403 1 HETNAM CA CALCIUM ION HETNAM CL CHLORIDE ION HETNAM ABU GAMMA-AMINO-BUTANOIC ACID HETSYN ABU GAMMA(AMINO)-BUTYRIC ACID FORMUL 6 CA 5(CA 2+) FORMUL 7 CL 5(CL 1-) FORMUL 8 ABU 5(C4 H9 N O2) FORMUL 21 HOH *382(H2 O) HELIX 1 AA1 TYR A 5 ALA A 10 5 6 HELIX 2 AA2 SER A 18 GLN A 23 5 6 HELIX 3 AA3 SER A 27 ILE A 53 1 27 HELIX 4 AA4 SER A 55 ALA A 73 1 19 HELIX 5 AA5 GLU A 74 ILE A 76 5 3 HELIX 6 AA6 PRO A 77 SER A 99 1 23 HELIX 7 AA7 PRO A 103 VAL A 114 1 12 HELIX 8 AA8 ASP A 118 SER A 144 1 27 HELIX 9 AA9 SER A 144 PHE A 151 1 8 HELIX 10 AB1 SER A 153 ALA A 160 1 8 HELIX 11 AB2 THR A 164 LEU A 174 1 11 HELIX 12 AB3 TRP A 182 GLU A 198 1 17 HELIX 13 AB4 ASP A 203 ILE A 230 1 28 HELIX 14 AB5 PRO A 233 ARG A 255 1 23 HELIX 15 AB6 ASP A 259 ALA A 263 5 5 HELIX 16 AB7 PRO A 274 ILE A 295 1 22 HELIX 17 AB8 GLU A 306 GLU A 324 1 19 HELIX 18 AB9 TYR B 5 ALA B 10 5 6 HELIX 19 AC1 SER B 18 GLN B 23 5 6 HELIX 20 AC2 SER B 27 ILE B 53 1 27 HELIX 21 AC3 SER B 55 ALA B 73 1 19 HELIX 22 AC4 GLU B 74 ILE B 76 5 3 HELIX 23 AC5 PRO B 77 SER B 99 1 23 HELIX 24 AC6 PRO B 103 VAL B 114 1 12 HELIX 25 AC7 ASP B 118 SER B 144 1 27 HELIX 26 AC8 SER B 144 PHE B 151 1 8 HELIX 27 AC9 SER B 153 ALA B 160 1 8 HELIX 28 AD1 THR B 164 LEU B 174 1 11 HELIX 29 AD2 TRP B 182 GLU B 198 1 17 HELIX 30 AD3 ASP B 203 ILE B 230 1 28 HELIX 31 AD4 PRO B 233 ARG B 255 1 23 HELIX 32 AD5 ASP B 259 ALA B 263 5 5 HELIX 33 AD6 PRO B 274 ILE B 295 1 22 HELIX 34 AD7 GLU B 306 GLU B 324 1 19 HELIX 35 AD8 TYR C 5 ALA C 10 5 6 HELIX 36 AD9 SER C 18 GLN C 23 5 6 HELIX 37 AE1 SER C 27 ILE C 53 1 27 HELIX 38 AE2 SER C 55 ALA C 73 1 19 HELIX 39 AE3 GLU C 74 ILE C 76 5 3 HELIX 40 AE4 PRO C 77 SER C 99 1 23 HELIX 41 AE5 PRO C 103 VAL C 114 1 12 HELIX 42 AE6 ASP C 118 SER C 144 1 27 HELIX 43 AE7 SER C 144 PHE C 151 1 8 HELIX 44 AE8 SER C 153 ALA C 160 1 8 HELIX 45 AE9 THR C 164 LEU C 174 1 11 HELIX 46 AF1 TRP C 182 GLU C 198 1 17 HELIX 47 AF2 ASP C 203 ILE C 230 1 28 HELIX 48 AF3 PRO C 233 ARG C 255 1 23 HELIX 49 AF4 ASP C 259 ALA C 263 5 5 HELIX 50 AF5 PRO C 274 ILE C 295 1 22 HELIX 51 AF6 GLU C 306 GLU C 324 1 19 HELIX 52 AF7 TYR D 5 ALA D 10 5 6 HELIX 53 AF8 SER D 18 GLN D 23 5 6 HELIX 54 AF9 SER D 27 ILE D 53 1 27 HELIX 55 AG1 SER D 55 ALA D 73 1 19 HELIX 56 AG2 GLU D 74 ILE D 76 5 3 HELIX 57 AG3 PRO D 77 SER D 99 1 23 HELIX 58 AG4 PRO D 103 VAL D 114 1 12 HELIX 59 AG5 ASP D 118 SER D 144 1 27 HELIX 60 AG6 SER D 144 PHE D 151 1 8 HELIX 61 AG7 SER D 153 ALA D 160 1 8 HELIX 62 AG8 THR D 164 LEU D 174 1 11 HELIX 63 AG9 TRP D 182 GLU D 198 1 17 HELIX 64 AH1 ASP D 203 ILE D 230 1 28 HELIX 65 AH2 PRO D 233 ARG D 255 1 23 HELIX 66 AH3 ASP D 259 ALA D 263 5 5 HELIX 67 AH4 PRO D 274 ILE D 295 1 22 HELIX 68 AH5 GLU D 306 GLU D 324 1 19 HELIX 69 AH6 TYR E 5 ALA E 10 5 6 HELIX 70 AH7 SER E 18 GLN E 23 5 6 HELIX 71 AH8 SER E 27 ILE E 53 1 27 HELIX 72 AH9 SER E 55 ALA E 73 1 19 HELIX 73 AI1 GLU E 74 ILE E 76 5 3 HELIX 74 AI2 PRO E 77 SER E 99 1 23 HELIX 75 AI3 PRO E 103 VAL E 114 1 12 HELIX 76 AI4 ASP E 118 SER E 144 1 27 HELIX 77 AI5 SER E 144 PHE E 151 1 8 HELIX 78 AI6 SER E 153 ALA E 160 1 8 HELIX 79 AI7 THR E 164 LEU E 174 1 11 HELIX 80 AI8 TRP E 182 GLU E 198 1 17 HELIX 81 AI9 ASP E 203 ILE E 230 1 28 HELIX 82 AJ1 PRO E 233 ARG E 255 1 23 HELIX 83 AJ2 ASP E 259 ALA E 263 5 5 HELIX 84 AJ3 PRO E 274 ILE E 295 1 22 HELIX 85 AJ4 GLU E 306 GLU E 324 1 19 LINK O ALA A 10 CA CA E 403 1555 1555 2.42 LINK O GLN A 293 CA CA A 401 1555 1555 2.46 LINK O ASN A 296 CA CA A 401 1555 1555 2.38 LINK OD2 ASP A 301 CA CA A 401 1555 1555 2.39 LINK OD1 ASP A 304 CA CA A 401 1555 1555 2.71 LINK OD2 ASP A 304 CA CA A 401 1555 1555 2.64 LINK CA CA A 401 O ALA B 10 1555 1555 2.41 LINK CA CA A 401 O HOH B 501 1555 1555 2.33 LINK O HOH A 502 CA CA E 403 1555 1555 2.32 LINK O GLN B 293 CA CA B 402 1555 1555 2.46 LINK O ASN B 296 CA CA B 402 1555 1555 2.38 LINK OD2 ASP B 301 CA CA B 402 1555 1555 2.39 LINK OD1 ASP B 304 CA CA B 402 1555 1555 2.71 LINK OD2 ASP B 304 CA CA B 402 1555 1555 2.64 LINK CA CA B 402 O ALA C 10 1555 1555 2.41 LINK CA CA B 402 O HOH C 501 1555 1555 2.38 LINK O GLN C 293 CA CA C 402 1555 1555 2.46 LINK O ASN C 296 CA CA C 402 1555 1555 2.38 LINK OD2 ASP C 301 CA CA C 402 1555 1555 2.39 LINK OD1 ASP C 304 CA CA C 402 1555 1555 2.71 LINK OD2 ASP C 304 CA CA C 402 1555 1555 2.64 LINK CA CA C 402 O ALA D 10 1555 1555 2.41 LINK CA CA C 402 O HOH D 501 1555 1555 2.34 LINK O GLN D 293 CA CA D 402 1555 1555 2.46 LINK O ASN D 296 CA CA D 402 1555 1555 2.38 LINK OD2 ASP D 301 CA CA D 402 1555 1555 2.39 LINK OD1 ASP D 304 CA CA D 402 1555 1555 2.71 LINK OD2 ASP D 304 CA CA D 402 1555 1555 2.64 LINK CA CA D 402 O ALA E 10 1555 1555 2.41 LINK CA CA D 402 O HOH E 501 1555 1555 2.36 LINK O GLN E 293 CA CA E 403 1555 1555 2.46 LINK O ASN E 296 CA CA E 403 1555 1555 2.38 LINK OD2 ASP E 301 CA CA E 403 1555 1555 2.39 LINK OD1 ASP E 304 CA CA E 403 1555 1555 2.71 LINK OD2 ASP E 304 CA CA E 403 1555 1555 2.64 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 CONECT 7014100 CONECT 240114056 CONECT 242614056 CONECT 246914056 CONECT 249214056 CONECT 249314056 CONECT 288114056 CONECT 521214072 CONECT 523714072 CONECT 528014072 CONECT 530314072 CONECT 530414072 CONECT 569214072 CONECT 802314081 CONECT 804814081 CONECT 809114081 CONECT 811414081 CONECT 811514081 CONECT 850314081 CONECT1083414090 CONECT1085914090 CONECT1090214090 CONECT1092514090 CONECT1092614090 CONECT1131414090 CONECT1364514100 CONECT1367014100 CONECT1371314100 CONECT1373614100 CONECT1373714100 CONECT14056 2401 2426 2469 2492 CONECT14056 2493 288114174 CONECT1405814059 CONECT140591405814060 CONECT140601405914061 CONECT140611406014062 CONECT14062140611406314064 CONECT1406314062 CONECT1406414062 CONECT1406514066 CONECT140661406514067 CONECT140671406614068 CONECT140681406714069 CONECT14069140681407014071 CONECT1407014069 CONECT1407114069 CONECT14072 5212 5237 5280 5303 CONECT14072 5304 569214250 CONECT1407414075 CONECT140751407414076 CONECT140761407514077 CONECT140771407614078 CONECT14078140771407914080 CONECT1407914078 CONECT1408014078 CONECT14081 8023 8048 8091 8114 CONECT14081 8115 850314327 CONECT1408314084 CONECT140841408314085 CONECT140851408414086 CONECT140861408514087 CONECT14087140861408814089 CONECT1408814087 CONECT1408914087 CONECT1409010834108591090210925 CONECT14090109261131414405 CONECT1409314094 CONECT140941409314095 CONECT140951409414096 CONECT140961409514097 CONECT14097140961409814099 CONECT1409814097 CONECT1409914097 CONECT14100 70136451367013713 CONECT14100137361373714102 CONECT1410214100 CONECT1417414056 CONECT1425014072 CONECT1432714081 CONECT1440514090 MASTER 244 0 15 85 0 0 0 614477 5 80 135 END