HEADER MEMBRANE PROTEIN 21-JUN-04 1TT1 TITLE CRYSTAL STRUCTURE OF THE GLUR6 LIGAND BINDING CORE IN COMPLEX WITH TITLE 2 KAINATE 1.93 A RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: GLUTAMATE RECEPTOR, IONOTROPIC KAINATE 2; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: GLUTAMATE RECEPTOR 6, GLUR-6, GLUR6; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS; SOURCE 3 ORGANISM_COMMON: NORWAY RAT; SOURCE 4 ORGANISM_TAXID: 10116; SOURCE 5 GENE: GRIK2, GLUR6; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: ORIGAMI B(DE3); SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PET22 (MODIFIED) KEYWDS MEMBRANE PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR M.L.MAYER REVDAT 5 23-AUG-23 1TT1 1 REMARK SEQADV REVDAT 4 26-JUL-17 1TT1 1 SOURCE REMARK REVDAT 3 24-FEB-09 1TT1 1 VERSN REVDAT 2 01-MAR-05 1TT1 1 JRNL REVDAT 1 08-FEB-05 1TT1 0 JRNL AUTH M.L.MAYER JRNL TITL CRYSTAL STRUCTURES OF THE GLUR5 AND GLUR6 LIGAND BINDING JRNL TITL 2 CORES: MOLECULAR MECHANISMS UNDERLYING KAINATE RECEPTOR JRNL TITL 3 SELECTIVITY JRNL REF NEURON V. 45 539 2005 JRNL REFN ISSN 0896-6273 JRNL PMID 15721240 JRNL DOI 10.1016/J.NEURON.2005.01.031 REMARK 2 REMARK 2 RESOLUTION. 1.93 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.93 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 24.95 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 975372.770 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 99.2 REMARK 3 NUMBER OF REFLECTIONS : 41047 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.189 REMARK 3 FREE R VALUE : 0.216 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 2054 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.005 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.93 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.05 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 96.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 6253 REMARK 3 BIN R VALUE (WORKING SET) : 0.2190 REMARK 3 BIN FREE R VALUE : 0.2550 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.90 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 322 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.014 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 4024 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 30 REMARK 3 SOLVENT ATOMS : 420 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 16.60 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 18.70 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 6.12000 REMARK 3 B22 (A**2) : -3.23000 REMARK 3 B33 (A**2) : -2.88000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -0.68000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.20 REMARK 3 ESD FROM SIGMAA (A) : 0.13 REMARK 3 LOW RESOLUTION CUTOFF (A) : 26.0 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.25 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.17 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : 1.300 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.40 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.910 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.37 REMARK 3 BSOL : 43.99 REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : KAI.PARAM REMARK 3 PARAMETER FILE 4 : ION.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : KAI.TOP REMARK 3 TOPOLOGY FILE 4 : ION.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1TT1 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 07-JUL-04. REMARK 100 THE DEPOSITION ID IS D_1000022878. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 14-JUN-04 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 4.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU MICROMAX-002 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : OSMIC MIRRORS REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 41047 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.930 REMARK 200 RESOLUTION RANGE LOW (A) : 24.950 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.3 REMARK 200 DATA REDUNDANCY : 3.800 REMARK 200 R MERGE (I) : 0.07400 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 10.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.93 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.00 REMARK 200 COMPLETENESS FOR SHELL (%) : 92.8 REMARK 200 DATA REDUNDANCY IN SHELL : 3.50 REMARK 200 R MERGE FOR SHELL (I) : 0.34900 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 4.070 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: PDB ENTRY 1S7Y REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 48.10 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.40 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 18% PEG 3350, 25 MM CITRATE, 2 MM REMARK 280 MALONATE, 20 MM NACL, 1 MM EDTA, 10 MM BME, PH 4.0, STREAK REMARK 280 SEEDING, TEMPERATURE 297K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,Y+1/2,-Z REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 2 0.000000 1.000000 0.000000 53.11400 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL 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: A, B 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 GLY A 1 REMARK 465 SER A 2 REMARK 465 GLY A 254 REMARK 465 ASN A 255 REMARK 465 GLY A 256 REMARK 465 CYS A 257 REMARK 465 PRO A 258 REMARK 465 GLU A 259 REMARK 465 GLY B 1 REMARK 465 SER B 2 REMARK 465 GLY B 254 REMARK 465 ASN B 255 REMARK 465 GLY B 256 REMARK 465 CYS B 257 REMARK 465 PRO B 258 REMARK 465 GLU B 259 REMARK 480 REMARK 480 ZERO OCCUPANCY ATOM REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 480 M RES C SSEQI ATOMS REMARK 480 ASN A 3 CB CG OD1 ND2 REMARK 480 ASN B 3 CB CG OD1 ND2 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 GLU A 13 109.53 -170.95 REMARK 500 LEU A 109 -169.12 -165.18 REMARK 500 GLU B 13 112.68 -169.65 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE KAI A 998 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE KAI B 999 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1S50 RELATED DB: PDB REMARK 900 GLUR6 COMPLEX WITH GLUTAMATE (P61) REMARK 900 RELATED ID: 1S7Y RELATED DB: PDB REMARK 900 GLUR6 COMPLEX WITH GLUTAMATE (P212121) REMARK 900 RELATED ID: 1SD3 RELATED DB: PDB REMARK 900 GLUR6 COMPLEX WITH 2S,4R-4-METHYLGLUTAMATE REMARK 900 RELATED ID: 1S9T RELATED DB: PDB REMARK 900 GLUR6 COMPLEX WITH QUISQUALATE REMARK 900 RELATED ID: 1FTK RELATED DB: PDB REMARK 900 GLUR2 COMPLEX WITH KAINATE REMARK 999 REMARK 999 SEQUENCE REMARK 999 GLUR6 S1 (RESIDUES 429-544) AND GLUR6 S2 (RESIDUES 667-806) REMARK 999 ARE LINKED BY A GT (RESIDUES 665, 666) PEPTIDE. REMARK 999 THE NATIVE GLUR-5 IS A MEMBRANE PROTEIN. THE PROTEIN REMARK 999 CRYSTALLIZED BY THE AUTHOR IS THE EXTRACELLULAR LIGAND REMARK 999 BINDING DOMAIN OF GLUR-5. TRANSMEMBRANE REGIONS WERE REMARK 999 GENETICALLY REMOVED AND REPLACED WITH A GLY-THR LINKER. REMARK 999 THE SEQUENCE, AS A RESULT, MATCHES DISCONTINUOUSLY WITH REMARK 999 THE REFERENCE DATABASE DBREF 1TT1 A 2 117 UNP P42260 GRIK2_RAT 429 544 DBREF 1TT1 A 118 259 UNP P42260 GRIK2_RAT 665 806 DBREF 1TT1 B 2 117 UNP P42260 GRIK2_RAT 429 544 DBREF 1TT1 B 118 259 UNP P42260 GRIK2_RAT 665 806 SEQADV 1TT1 GLY A 1 UNP P42260 CLONING ARTIFACT SEQADV 1TT1 GLY A 118 UNP P42260 GLU 665 SEE REMARK 999 SEQADV 1TT1 THR A 119 UNP P42260 SER 666 SEE REMARK 999 SEQADV 1TT1 GLY B 1 UNP P42260 CLONING ARTIFACT SEQADV 1TT1 GLY B 118 UNP P42260 GLU 665 SEE REMARK 999 SEQADV 1TT1 THR B 119 UNP P42260 SER 666 SEE REMARK 999 SEQRES 1 A 259 GLY SER ASN ARG SER LEU ILE VAL THR THR ILE LEU GLU SEQRES 2 A 259 GLU PRO TYR VAL LEU PHE LYS LYS SER ASP LYS PRO LEU SEQRES 3 A 259 TYR GLY ASN ASP ARG PHE GLU GLY TYR CYS ILE ASP LEU SEQRES 4 A 259 LEU ARG GLU LEU SER THR ILE LEU GLY PHE THR TYR GLU SEQRES 5 A 259 ILE ARG LEU VAL GLU ASP GLY LYS TYR GLY ALA GLN ASP SEQRES 6 A 259 ASP VAL ASN GLY GLN TRP ASN GLY MET VAL ARG GLU LEU SEQRES 7 A 259 ILE ASP HIS LYS ALA ASP LEU ALA VAL ALA PRO LEU ALA SEQRES 8 A 259 ILE THR TYR VAL ARG GLU LYS VAL ILE ASP PHE SER LYS SEQRES 9 A 259 PRO PHE MET THR LEU GLY ILE SER ILE LEU TYR ARG LYS SEQRES 10 A 259 GLY THR PRO ILE ASP SER ALA ASP ASP LEU ALA LYS GLN SEQRES 11 A 259 THR LYS ILE GLU TYR GLY ALA VAL GLU ASP GLY ALA THR SEQRES 12 A 259 MET THR PHE PHE LYS LYS SER LYS ILE SER THR TYR ASP SEQRES 13 A 259 LYS MET TRP ALA PHE MET SER SER ARG ARG GLN SER VAL SEQRES 14 A 259 LEU VAL LYS SER ASN GLU GLU GLY ILE GLN ARG VAL LEU SEQRES 15 A 259 THR SER ASP TYR ALA PHE LEU MET GLU SER THR THR ILE SEQRES 16 A 259 GLU PHE VAL THR GLN ARG ASN CYS ASN LEU THR GLN ILE SEQRES 17 A 259 GLY GLY LEU ILE ASP SER LYS GLY TYR GLY VAL GLY THR SEQRES 18 A 259 PRO MET GLY SER PRO TYR ARG ASP LYS ILE THR ILE ALA SEQRES 19 A 259 ILE LEU GLN LEU GLN GLU GLU GLY LYS LEU HIS MET MET SEQRES 20 A 259 LYS GLU LYS TRP TRP ARG GLY ASN GLY CYS PRO GLU SEQRES 1 B 259 GLY SER ASN ARG SER LEU ILE VAL THR THR ILE LEU GLU SEQRES 2 B 259 GLU PRO TYR VAL LEU PHE LYS LYS SER ASP LYS PRO LEU SEQRES 3 B 259 TYR GLY ASN ASP ARG PHE GLU GLY TYR CYS ILE ASP LEU SEQRES 4 B 259 LEU ARG GLU LEU SER THR ILE LEU GLY PHE THR TYR GLU SEQRES 5 B 259 ILE ARG LEU VAL GLU ASP GLY LYS TYR GLY ALA GLN ASP SEQRES 6 B 259 ASP VAL ASN GLY GLN TRP ASN GLY MET VAL ARG GLU LEU SEQRES 7 B 259 ILE ASP HIS LYS ALA ASP LEU ALA VAL ALA PRO LEU ALA SEQRES 8 B 259 ILE THR TYR VAL ARG GLU LYS VAL ILE ASP PHE SER LYS SEQRES 9 B 259 PRO PHE MET THR LEU GLY ILE SER ILE LEU TYR ARG LYS SEQRES 10 B 259 GLY THR PRO ILE ASP SER ALA ASP ASP LEU ALA LYS GLN SEQRES 11 B 259 THR LYS ILE GLU TYR GLY ALA VAL GLU ASP GLY ALA THR SEQRES 12 B 259 MET THR PHE PHE LYS LYS SER LYS ILE SER THR TYR ASP SEQRES 13 B 259 LYS MET TRP ALA PHE MET SER SER ARG ARG GLN SER VAL SEQRES 14 B 259 LEU VAL LYS SER ASN GLU GLU GLY ILE GLN ARG VAL LEU SEQRES 15 B 259 THR SER ASP TYR ALA PHE LEU MET GLU SER THR THR ILE SEQRES 16 B 259 GLU PHE VAL THR GLN ARG ASN CYS ASN LEU THR GLN ILE SEQRES 17 B 259 GLY GLY LEU ILE ASP SER LYS GLY TYR GLY VAL GLY THR SEQRES 18 B 259 PRO MET GLY SER PRO TYR ARG ASP LYS ILE THR ILE ALA SEQRES 19 B 259 ILE LEU GLN LEU GLN GLU GLU GLY LYS LEU HIS MET MET SEQRES 20 B 259 LYS GLU LYS TRP TRP ARG GLY ASN GLY CYS PRO GLU HET KAI A 998 15 HET KAI B 999 15 HETNAM KAI 3-(CARBOXYMETHYL)-4-ISOPROPENYLPROLINE HETSYN KAI KAINATE FORMUL 3 KAI 2(C10 H15 N O4) FORMUL 5 HOH *420(H2 O) HELIX 1 1 TYR A 27 ASP A 30 5 4 HELIX 2 2 GLY A 34 GLY A 48 1 15 HELIX 3 3 ASN A 72 ASP A 80 1 9 HELIX 4 4 THR A 93 LYS A 98 1 6 HELIX 5 5 SER A 123 LYS A 129 1 7 HELIX 6 6 GLY A 141 SER A 150 1 10 HELIX 7 7 ILE A 152 ARG A 165 1 14 HELIX 8 8 ARG A 165 LEU A 170 1 6 HELIX 9 9 SER A 173 SER A 184 1 12 HELIX 10 10 SER A 192 ASN A 202 1 11 HELIX 11 11 PRO A 226 GLU A 241 1 16 HELIX 12 12 GLY A 242 ARG A 253 1 12 HELIX 13 13 TYR B 27 ASP B 30 5 4 HELIX 14 14 GLY B 34 GLY B 48 1 15 HELIX 15 15 ASN B 72 ASP B 80 1 9 HELIX 16 16 THR B 93 LYS B 98 1 6 HELIX 17 17 SER B 123 LYS B 129 1 7 HELIX 18 18 GLY B 141 SER B 150 1 10 HELIX 19 19 ILE B 152 ARG B 165 1 14 HELIX 20 20 ARG B 165 LEU B 170 1 6 HELIX 21 21 SER B 173 SER B 184 1 12 HELIX 22 22 SER B 192 ASN B 202 1 11 HELIX 23 23 PRO B 226 GLU B 241 1 16 HELIX 24 24 GLY B 242 ARG B 253 1 12 SHEET 1 A 3 TYR A 51 LEU A 55 0 SHEET 2 A 3 LEU A 6 THR A 10 1 N VAL A 8 O GLU A 52 SHEET 3 A 3 LEU A 85 ALA A 86 1 O LEU A 85 N THR A 9 SHEET 1 B 2 LEU A 18 PHE A 19 0 SHEET 2 B 2 PHE A 32 GLU A 33 -1 O GLU A 33 N LEU A 18 SHEET 1 C 2 ILE A 100 PHE A 102 0 SHEET 2 C 2 GLY A 220 PRO A 222 -1 O THR A 221 N ASP A 101 SHEET 1 D 2 MET A 107 LEU A 109 0 SHEET 2 D 2 LYS A 215 TYR A 217 -1 O LYS A 215 N LEU A 109 SHEET 1 E 4 GLU A 134 GLY A 136 0 SHEET 2 E 4 TYR A 186 GLU A 191 1 O LEU A 189 N GLY A 136 SHEET 3 E 4 ILE A 111 ARG A 116 -1 N LEU A 114 O PHE A 188 SHEET 4 E 4 LEU A 205 ILE A 208 -1 O ILE A 208 N ILE A 113 SHEET 1 F 3 TYR B 51 LEU B 55 0 SHEET 2 F 3 LEU B 6 THR B 10 1 N VAL B 8 O ARG B 54 SHEET 3 F 3 LEU B 85 ALA B 86 1 O LEU B 85 N THR B 9 SHEET 1 G 2 LEU B 18 PHE B 19 0 SHEET 2 G 2 PHE B 32 GLU B 33 -1 O GLU B 33 N LEU B 18 SHEET 1 H 2 ILE B 100 PHE B 102 0 SHEET 2 H 2 GLY B 220 PRO B 222 -1 O THR B 221 N ASP B 101 SHEET 1 I 2 MET B 107 LEU B 109 0 SHEET 2 I 2 LYS B 215 TYR B 217 -1 O LYS B 215 N LEU B 109 SHEET 1 J 4 GLU B 134 GLY B 136 0 SHEET 2 J 4 TYR B 186 GLU B 191 1 O LEU B 189 N GLY B 136 SHEET 3 J 4 ILE B 111 ARG B 116 -1 N LEU B 114 O PHE B 188 SHEET 4 J 4 LEU B 205 ILE B 208 -1 O THR B 206 N TYR B 115 CISPEP 1 GLU A 14 PRO A 15 0 -1.79 CISPEP 2 GLU B 14 PRO B 15 0 1.33 SITE 1 AC1 14 TYR A 61 PRO A 89 LEU A 90 ALA A 91 SITE 2 AC1 14 ARG A 96 VAL A 138 GLY A 141 ALA A 142 SITE 3 AC1 14 THR A 143 ASN A 174 GLU A 191 HOH A1000 SITE 4 AC1 14 HOH A1005 HOH A1014 SITE 1 AC2 14 TYR B 61 PRO B 89 LEU B 90 ALA B 91 SITE 2 AC2 14 ARG B 96 VAL B 138 GLY B 141 ALA B 142 SITE 3 AC2 14 THR B 143 ASN B 174 GLU B 191 HOH B1000 SITE 4 AC2 14 HOH B1012 HOH B1021 CRYST1 46.682 106.228 57.665 90.00 101.38 90.00 P 1 21 1 4 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 0.021422 0.000000 0.004311 0.00000 SCALE2 0.000000 0.009414 0.000000 0.00000 SCALE3 0.000000 0.000000 0.017689 0.00000