HEADER DE NOVO PROTEIN 10-NOV-15 5EON TITLE CRYSTAL STRUCTURE OF A DE NOVO ANTIPARALLEL COILED-COIL HEXAMER - ACC- TITLE 2 HEX COMPND MOL_ID: 1; COMPND 2 MOLECULE: ACC-HEX; COMPND 3 CHAIN: A, B, C; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 4 ORGANISM_TAXID: 32630 KEYWDS HEXAMER, COILED-COIL, ANTIPARALLEL, DE NOVO PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR R.K.SPENCER,A.I.HOCHBAUM REVDAT 5 25-OCT-23 5EON 1 REMARK REVDAT 4 14-DEC-22 5EON 1 COMPND SOURCE JRNL REMARK REVDAT 4 2 1 DBREF SEQRES HET HETNAM REVDAT 4 3 1 FORMUL HELIX LINK ATOM REVDAT 3 22-JUN-16 5EON 1 JRNL REVDAT 2 01-JUN-16 5EON 1 JRNL REVDAT 1 25-MAY-16 5EON 0 JRNL AUTH R.K.SPENCER,A.I.HOCHBAUM JRNL TITL X-RAY CRYSTALLOGRAPHIC STRUCTURE AND SOLUTION BEHAVIOR OF AN JRNL TITL 2 ANTIPARALLEL COILED-COIL HEXAMER FORMED BY DE NOVO PEPTIDES. JRNL REF BIOCHEMISTRY V. 55 3214 2016 JRNL REFN ISSN 0006-2960 JRNL PMID 27192036 JRNL DOI 10.1021/ACS.BIOCHEM.6B00201 REMARK 2 REMARK 2 RESOLUTION. 1.70 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (1.10.1_2155: ???) REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 32.75 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.370 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.5 REMARK 3 NUMBER OF REFLECTIONS : 10797 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.200 REMARK 3 R VALUE (WORKING SET) : 0.198 REMARK 3 FREE R VALUE : 0.222 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1080 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 32.7597 - 3.3915 0.99 1320 147 0.2095 0.2345 REMARK 3 2 3.3915 - 2.6923 1.00 1235 137 0.1802 0.1902 REMARK 3 3 2.6923 - 2.3521 1.00 1224 136 0.1806 0.2078 REMARK 3 4 2.3521 - 2.1371 1.00 1203 134 0.1837 0.2278 REMARK 3 5 2.1371 - 1.9839 1.00 1196 133 0.1927 0.2233 REMARK 3 6 1.9839 - 1.8670 1.00 1199 133 0.2430 0.2447 REMARK 3 7 1.8670 - 1.7735 1.00 1195 133 0.2241 0.2676 REMARK 3 8 1.7735 - 1.6963 0.97 1145 127 0.2523 0.2813 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.150 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 21.890 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.002 786 REMARK 3 ANGLE : 0.389 1054 REMARK 3 CHIRALITY : 0.035 107 REMARK 3 PLANARITY : 0.001 134 REMARK 3 DIHEDRAL : 19.116 476 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 3 REMARK 3 TLS GROUP : 1 REMARK 3 SELECTION: CHAIN 'B' AND (RESID 2 THROUGH 29 ) REMARK 3 ORIGIN FOR THE GROUP (A): -5.8328 -13.0619 1.2028 REMARK 3 T TENSOR REMARK 3 T11: 0.1197 T22: 0.1452 REMARK 3 T33: 0.3041 T12: -0.0222 REMARK 3 T13: 0.0037 T23: 0.0787 REMARK 3 L TENSOR REMARK 3 L11: 2.7344 L22: 3.9031 REMARK 3 L33: 2.7352 L12: -0.8148 REMARK 3 L13: 0.7139 L23: -1.2361 REMARK 3 S TENSOR REMARK 3 S11: -0.1420 S12: -0.0308 S13: -0.0174 REMARK 3 S21: 0.0895 S22: -0.0213 S23: -0.2952 REMARK 3 S31: -0.2182 S32: 0.4651 S33: 0.1872 REMARK 3 TLS GROUP : 2 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 2 THROUGH 29 ) REMARK 3 ORIGIN FOR THE GROUP (A): -7.8566 -19.8851 -1.9469 REMARK 3 T TENSOR REMARK 3 T11: 0.1216 T22: 0.1394 REMARK 3 T33: 0.3210 T12: 0.0368 REMARK 3 T13: 0.0207 T23: 0.0674 REMARK 3 L TENSOR REMARK 3 L11: 2.0461 L22: 2.3988 REMARK 3 L33: 4.2903 L12: 1.0153 REMARK 3 L13: -1.7698 L23: -0.9162 REMARK 3 S TENSOR REMARK 3 S11: -0.1391 S12: -0.0756 S13: -0.2397 REMARK 3 S21: 0.2952 S22: 0.0855 S23: -0.0450 REMARK 3 S31: 0.1419 S32: 0.3185 S33: 0.1623 REMARK 3 TLS GROUP : 3 REMARK 3 SELECTION: CHAIN 'C' AND (RESID 2 THROUGH 29 ) REMARK 3 ORIGIN FOR THE GROUP (A): -17.4300 -22.7320 1.2605 REMARK 3 T TENSOR REMARK 3 T11: 0.1830 T22: 0.1175 REMARK 3 T33: 0.3187 T12: -0.0141 REMARK 3 T13: -0.0120 T23: 0.0651 REMARK 3 L TENSOR REMARK 3 L11: 3.3639 L22: 1.7908 REMARK 3 L33: 2.6650 L12: -0.5468 REMARK 3 L13: -1.6926 L23: 1.3831 REMARK 3 S TENSOR REMARK 3 S11: 0.0285 S12: 0.1676 S13: -0.1743 REMARK 3 S21: 0.1873 S22: 0.1442 S23: 0.0167 REMARK 3 S31: 0.5308 S32: -0.2473 S33: 0.1296 REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 5EON COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 11-NOV-15. REMARK 100 THE DEPOSITION ID IS D_1000215276. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 21-OCT-15 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.3 REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 5.0.1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.977 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315R REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : AIMLESS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 10805 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.696 REMARK 200 RESOLUTION RANGE LOW (A) : 32.754 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 2.000 REMARK 200 R MERGE (I) : 0.01000 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 31.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.70 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.76 REMARK 200 COMPLETENESS FOR SHELL (%) : 96.0 REMARK 200 DATA REDUNDANCY IN SHELL : 1.90 REMARK 200 R MERGE FOR SHELL (I) : 0.19000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 3.420 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: 5EOJ REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 46.33 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.29 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M NA FORMATE, PH 7.3, PEG 3350 REMARK 280 29%, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 42 21 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z REMARK 290 3555 -Y+1/2,X+1/2,Z+1/2 REMARK 290 4555 Y+1/2,-X+1/2,Z+1/2 REMARK 290 5555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 6555 X+1/2,-Y+1/2,-Z+1/2 REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-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 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 29.62800 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 29.62800 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 26.25950 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 29.62800 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 29.62800 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 26.25950 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 29.62800 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 29.62800 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 26.25950 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 29.62800 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 29.62800 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 26.25950 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 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: HEXAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: HEXAMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 11130 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 10220 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -110.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C 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 350 BIOMT1 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH C 119 LIES ON A SPECIAL POSITION. 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 HZ2 LYS A 18 O HOH A 102 1.58 REMARK 500 O HOH A 136 O HOH B 107 2.14 REMARK 500 O HOH A 107 O HOH A 114 2.19 REMARK 500 REMARK 500 REMARK: NULL 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 LYS A 30 N LYS A 30 CA -0.157 REMARK 500 LYS B 30 N LYS B 30 CA -0.156 REMARK 500 LYS C 30 N LYS C 30 CA -0.154 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 LYS A 30 CB - CA - C ANGL. DEV. = 12.9 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH C 136 DISTANCE = 6.43 ANGSTROMS DBREF 5EON A 1 31 PDB 5EON 5EON 1 31 DBREF 5EON B 1 31 PDB 5EON 5EON 1 31 DBREF 5EON C 1 31 PDB 5EON 5EON 1 31 SEQRES 1 A 31 ACE GLU LEU LYS ALA ILE ALA GLN GLU PHE LYS ALA ILE SEQRES 2 A 31 ALA LYS GLU PHE LYS ALA ILE ALA TRP GLU PHE LYS ALA SEQRES 3 A 31 ILE ALA GLN LYS NH2 SEQRES 1 B 31 ACE GLU LEU LYS ALA ILE ALA GLN GLU PHE LYS ALA ILE SEQRES 2 B 31 ALA LYS GLU PHE LYS ALA ILE ALA TRP GLU PHE LYS ALA SEQRES 3 B 31 ILE ALA GLN LYS NH2 SEQRES 1 C 31 ACE GLU LEU LYS ALA ILE ALA GLN GLU PHE LYS ALA ILE SEQRES 2 C 31 ALA LYS GLU PHE LYS ALA ILE ALA TRP GLU PHE LYS ALA SEQRES 3 C 31 ILE ALA GLN LYS NH2 HET ACE A 1 3 HET NH2 A 31 3 HET ACE B 1 3 HET NH2 B 31 3 HET ACE C 1 3 HET NH2 C 31 3 HETNAM ACE ACETYL GROUP HETNAM NH2 AMINO GROUP FORMUL 1 ACE 3(C2 H4 O) FORMUL 1 NH2 3(H2 N) FORMUL 4 HOH *101(H2 O) HELIX 1 AA1 GLU A 2 LYS A 30 1 29 HELIX 2 AA2 GLU B 2 GLN B 29 1 28 HELIX 3 AA3 GLU C 2 LYS C 30 1 29 LINK C ACE A 1 N GLU A 2 1555 1555 1.33 LINK C LYS A 30 N NH2 A 31 1555 1555 1.45 LINK C ACE B 1 N GLU B 2 1555 1555 1.33 LINK C LYS B 30 N NH2 B 31 1555 1555 1.45 LINK C ACE C 1 N GLU C 2 1555 1555 1.33 LINK C LYS C 30 N NH2 C 31 1555 1555 1.45 CRYST1 59.256 59.256 52.519 90.00 90.00 90.00 P 42 21 2 24 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 0.016876 0.000000 0.000000 0.00000 SCALE2 0.000000 0.016876 0.000000 0.00000 SCALE3 0.000000 0.000000 0.019041 0.00000 HETATM 1 C ACE A 1 -17.190 -23.780 17.655 1.00 24.75 C HETATM 2 O ACE A 1 -16.864 -23.602 18.829 1.00 30.14 O HETATM 3 CH3 ACE A 1 -18.624 -23.759 17.219 1.00 25.95 C