HEADER LUMINESCENT PROTEIN 23-FEB-06 2G5Z TITLE STRUCTURE OF S65G Y66S GFP VARIANT AFTER SPONTANEOUS PEPTIDE TITLE 2 HYDROLYSIS AND DECARBOXYLATION COMPND MOL_ID: 1; COMPND 2 MOLECULE: GREEN FLUORESCENT PROTEIN; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: GREEN FLUORESCENT PROTEIN; COMPND 8 CHAIN: B; COMPND 9 ENGINEERED: YES; COMPND 10 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: AEQUOREA VICTORIA; SOURCE 3 ORGANISM_TAXID: 6100; SOURCE 4 GENE: GFP; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PET11A; SOURCE 10 MOL_ID: 2; SOURCE 11 ORGANISM_SCIENTIFIC: AEQUOREA VICTORIA; SOURCE 12 ORGANISM_TAXID: 6100; SOURCE 13 GENE: GFP; SOURCE 14 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 15 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 16 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 17 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 18 EXPRESSION_SYSTEM_PLASMID: PET11A KEYWDS CHROMOPHORE, BIOSYNTHESIS, PEPTIDE HYDROLYSIS, POST-TRANSLATIONAL KEYWDS 2 MODIFICATION, DECARBOXYLATION, LUMINESCENT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR D.P.BARONDEAU,C.J.KASSMANN,J.A.TAINER,E.D.GETZOFF REVDAT 5 30-AUG-23 2G5Z 1 REMARK REVDAT 4 20-OCT-21 2G5Z 1 REMARK SEQADV LINK REVDAT 3 24-FEB-09 2G5Z 1 VERSN REVDAT 2 01-AUG-06 2G5Z 1 REMARK DBREF SEQADV REVDAT 1 18-APR-06 2G5Z 0 JRNL AUTH D.P.BARONDEAU,C.J.KASSMANN,J.A.TAINER,E.D.GETZOFF JRNL TITL UNDERSTANDING GFP POSTTRANSLATIONAL CHEMISTRY: STRUCTURES OF JRNL TITL 2 DESIGNED VARIANTS THAT ACHIEVE BACKBONE FRAGMENTATION, JRNL TITL 3 HYDROLYSIS, AND DECARBOXYLATION. JRNL REF J.AM.CHEM.SOC. V. 128 4685 2006 JRNL REFN ISSN 0002-7863 JRNL PMID 16594705 JRNL DOI 10.1021/JA056635L REMARK 2 REMARK 2 RESOLUTION. 1.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : SHELXL-97 REMARK 3 AUTHORS : G.M.SHELDRICK REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (NO CUTOFF). REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : 0.160 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : 0.232 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : 1089 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 21790 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : NULL REMARK 3 R VALUE (WORKING SET, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE (F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (F>4SIG(F)) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (F>4SIG(F)) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1787 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 320 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : NULL REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : NULL REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : NULL REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : NULL REMARK 3 NUMBER OF RESTRAINTS : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 ANGLE DISTANCES (A) : 0.024 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : NULL REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : NULL REMARK 3 ZERO CHIRAL VOLUMES (A**3) : NULL REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : NULL REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : NULL REMARK 3 RIGID-BOND ADP COMPONENTS (A**2) : NULL REMARK 3 SIMILAR ADP COMPONENTS (A**2) : NULL REMARK 3 APPROXIMATELY ISOTROPIC ADPS (A**2) : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED: NULL REMARK 3 REMARK 3 STEREOCHEMISTRY TARGET VALUES : ENGH & HUBER REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2G5Z COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 01-MAR-06. REMARK 100 THE DEPOSITION ID IS D_1000036730. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 04-JUL-04 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL9-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97946 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 21833 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.800 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.08600 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 28.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.86 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.9 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.34300 REMARK 200 <I/SIGMA(I)> FOR SHELL : 6.400 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 1EMA REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 42.55 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.14 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 50 MM MGCL2, 50 MM HEPES, 20% PEG REMARK 280 4000, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K, PH 8.0 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 REMARK 290 4555 X+1/2,-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 25.53500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 35.82500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 31.28500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 35.82500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 25.53500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 31.28500 REMARK 290 SMTRY3 4 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 4630 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 10350 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -37.0 KCAL/MOL 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 MET A 0 REMARK 465 ALA A 1 REMARK 465 SER A 2 REMARK 465 THR B 230 REMARK 465 HIS B 231 REMARK 465 GLY B 232 REMARK 465 MET B 233 REMARK 465 ASP B 234 REMARK 465 GLU B 235 REMARK 465 LEU B 236 REMARK 465 TYR B 237 REMARK 465 LYS B 238 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 ILE B 229 C ILE B 229 O 1.563 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ARG B 122 CD - NE - CZ ANGL. DEV. = 8.5 DEGREES REMARK 500 ILE B 229 CA - C - O ANGL. DEV. = -23.0 DEGREES 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 MG B 301 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH B1315 O REMARK 620 2 HOH B1316 O 176.8 REMARK 620 3 HOH B1317 O 91.5 90.1 REMARK 620 4 HOH B1318 O 88.7 89.8 177.9 REMARK 620 5 HOH B1319 O 88.1 89.1 90.5 91.6 REMARK 620 6 HOH B1320 O 89.3 93.5 89.7 88.2 177.4 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 301 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2G16 RELATED DB: PDB REMARK 900 STRUCTURE OF S65A Y66S GFP VARIANT AFTER BACKBONE FRAGMENTATION REMARK 900 RELATED ID: 2G2S RELATED DB: PDB REMARK 900 STRUCTURE OF S65G Y66S GFP VARIANT AFTER SPONTANEOUS PEPTIDE REMARK 900 HYDROLYSIS REMARK 900 RELATED ID: 2G3D RELATED DB: PDB REMARK 900 STRUCTURE OF S65G Y66A GFP VARIANT AFTER SPONTANEOUS PEPTIDE REMARK 900 HYDROLYSIS REMARK 999 REMARK 999 SEQUENCE REMARK 999 SER 65 IS MUTATED TO GLY, TYR 66 IS MUTATED TO SER. REMARK 999 PEPTIDE BOND AT POSITION 65-66 IS BROKEN AND THE REMARK 999 C-TERMINUS OF RESIDUE 65 IS DECARBOXYLATED FORMING NME. REMARK 999 RESIDUE S66 UNDERWENT SIDE CHAIN DEHYDRATION TO CREATE REMARK 999 DEHYDROALANINE MOIETY. DBREF 2G5Z A 2 65 UNP P42212 GFP_AEQVI 2 65 DBREF 2G5Z B 66 238 UNP P42212 GFP_AEQVI 66 238 SEQADV 2G5Z MET A 0 UNP P42212 INITIATING METHIONINE SEQADV 2G5Z ALA A 1 UNP P42212 CLONING ARTIFACT SEQADV 2G5Z NME A 65 UNP P42212 SER 65 SEE REMARK 999 SEQADV 2G5Z DHA B 66 UNP P42212 TYR 66 SEE REMARK 999 SEQADV 2G5Z SER B 99 UNP P42212 PHE 99 ENGINEERED MUTATION SEQADV 2G5Z THR B 153 UNP P42212 MET 153 ENGINEERED MUTATION SEQADV 2G5Z ALA B 163 UNP P42212 VAL 163 ENGINEERED MUTATION SEQRES 1 A 66 MET ALA SER LYS GLY GLU GLU LEU PHE THR GLY VAL VAL SEQRES 2 A 66 PRO ILE LEU VAL GLU LEU ASP GLY ASP VAL ASN GLY HIS SEQRES 3 A 66 LYS PHE SER VAL SER GLY GLU GLY GLU GLY ASP ALA THR SEQRES 4 A 66 TYR GLY LYS LEU THR LEU LYS PHE ILE CYS THR THR GLY SEQRES 5 A 66 LYS LEU PRO VAL PRO TRP PRO THR LEU VAL THR THR PHE SEQRES 6 A 66 NME SEQRES 1 B 173 DHA GLY VAL GLN CYS PHE SER ARG TYR PRO ASP HIS MET SEQRES 2 B 173 LYS GLN HIS ASP PHE PHE LYS SER ALA MET PRO GLU GLY SEQRES 3 B 173 TYR VAL GLN GLU ARG THR ILE SER PHE LYS ASP ASP GLY SEQRES 4 B 173 ASN TYR LYS THR ARG ALA GLU VAL LYS PHE GLU GLY ASP SEQRES 5 B 173 THR LEU VAL ASN ARG ILE GLU LEU LYS GLY ILE ASP PHE SEQRES 6 B 173 LYS GLU ASP GLY ASN ILE LEU GLY HIS LYS LEU GLU TYR SEQRES 7 B 173 ASN TYR ASN SER HIS ASN VAL TYR ILE THR ALA ASP LYS SEQRES 8 B 173 GLN LYS ASN GLY ILE LYS ALA ASN PHE LYS ILE ARG HIS SEQRES 9 B 173 ASN ILE GLU ASP GLY SER VAL GLN LEU ALA ASP HIS TYR SEQRES 10 B 173 GLN GLN ASN THR PRO ILE GLY ASP GLY PRO VAL LEU LEU SEQRES 11 B 173 PRO ASP ASN HIS TYR LEU SER THR GLN SER ALA LEU SER SEQRES 12 B 173 LYS ASP PRO ASN GLU LYS ARG ASP HIS MET VAL LEU LEU SEQRES 13 B 173 GLU PHE VAL THR ALA ALA GLY ILE THR HIS GLY MET ASP SEQRES 14 B 173 GLU LEU TYR LYS MODRES 2G5Z DHA B 66 ALA 2-AMINO-ACRYLIC ACID HET NME A 65 2 HET DHA B 66 5 HET MG B 301 1 HETNAM NME METHYLAMINE HETNAM DHA 2-AMINO-ACRYLIC ACID HETNAM MG MAGNESIUM ION HETSYN DHA 2,3-DIDEHYDROALANINE FORMUL 1 NME C H5 N FORMUL 2 DHA C3 H5 N O2 FORMUL 3 MG MG 2+ FORMUL 4 HOH *320(H2 O) HELIX 1 1 LYS A 3 THR A 9 5 7 HELIX 2 2 ALA A 37 TYR A 39 5 3 HELIX 3 3 PRO A 56 VAL A 61 5 6 HELIX 4 4 VAL B 68 SER B 72 5 5 HELIX 5 5 PRO B 75 HIS B 81 5 7 HELIX 6 6 ASP B 82 ALA B 87 1 6 HELIX 7 7 LYS B 156 ASN B 159 5 4 SHEET 1 A12 VAL A 12 VAL A 22 0 SHEET 2 A12 HIS A 25 ASP A 36 -1 O PHE A 27 N GLY A 20 SHEET 3 A12 LYS A 41 CYS A 48 -1 O LYS A 41 N ASP A 36 SHEET 4 A12 HIS B 217 ALA B 227 -1 O MET B 218 N PHE A 46 SHEET 5 A12 HIS B 199 SER B 208 -1 N SER B 202 O THR B 225 SHEET 6 A12 HIS B 148 ASP B 155 -1 N HIS B 148 O THR B 203 SHEET 7 A12 GLY B 160 ASN B 170 -1 O GLY B 160 N ASP B 155 SHEET 8 A12 VAL B 176 PRO B 187 -1 O GLN B 177 N HIS B 169 SHEET 9 A12 TYR B 92 PHE B 100 -1 N GLU B 95 O GLN B 184 SHEET 10 A12 ASN B 105 GLU B 115 -1 O TYR B 106 N ILE B 98 SHEET 11 A12 THR B 118 ILE B 128 -1 O THR B 118 N GLU B 115 SHEET 12 A12 VAL A 12 VAL A 22 1 N ASP A 21 O GLY B 127 LINK C PHE A 64 N NME A 65 1555 1555 1.33 LINK C DHA B 66 N GLY B 67 1555 1555 1.32 LINK MG MG B 301 O HOH B1315 1555 1555 2.10 LINK MG MG B 301 O HOH B1316 1555 1555 2.06 LINK MG MG B 301 O HOH B1317 1555 1555 2.08 LINK MG MG B 301 O HOH B1318 1555 1555 2.08 LINK MG MG B 301 O HOH B1319 1555 1555 2.08 LINK MG MG B 301 O HOH B1320 1555 1555 2.09 CISPEP 1 MET B 88 PRO B 89 0 1.63 SITE 1 AC1 6 HOH B1315 HOH B1316 HOH B1317 HOH B1318 SITE 2 AC1 6 HOH B1319 HOH B1320 CRYST1 51.070 62.570 71.650 90.00 90.00 90.00 P 21 21 21 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 0.019581 0.000000 0.000000 0.00000 SCALE2 0.000000 0.015982 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013957 0.00000