PDB Short entry for 1AMT HEADER ANTIBIOTIC 08-DEC-87 1AMT TITLE CRYSTAL STRUCTURE OF ALAMETHICIN AT 1.5 ANGSTROM RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALAMETHICIN F30; COMPND 3 CHAIN: A, B, C; COMPND 4 SYNONYM: ALAMETHICIN; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 ORGANISM_SCIENTIFIC: TRICHODERMA VIRIDE; SOURCE 4 ORGANISM_TAXID: 5547 KEYWDS ALAMETHICIN, PEPTAIBOL, ANTIBACTERIAL, ANTIFUNGAL, ANTIBIOTIC EXPDTA X-RAY DIFFRACTION AUTHOR R.O.FOX,F.M.RICHARDS REVDAT 7 01-NOV-17 1AMT 1 REMARK REVDAT 6 27-JUL-11 1AMT 1 REMARK REVDAT 5 13-JUL-11 1AMT 1 VERSN REVDAT 4 24-FEB-09 1AMT 1 VERSN REVDAT 3 01-APR-03 1AMT 1 JRNL REVDAT 2 15-JAN-91 1AMT 3 ATOM CONECT REVDAT 1 09-OCT-88 1AMT 0 JRNL AUTH R.O.FOX JR,F.M.RICHARDS JRNL TITL A VOLTAGE-GATED ION CHANNEL MODEL INFERRED FROM THE CRYSTAL JRNL TITL 2 STRUCTURE OF ALAMETHICIN AT 1.5-A RESOLUTION. JRNL REF NATURE V. 300 325 1982 JRNL REFN ISSN 0028-0836 JRNL PMID 6292726 JRNL DOI 10.1038/300325A0 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH R.O.FOX REMARK 1 TITL THE CRYSTAL STRUCTURE OF ALAMETHICIN AT 1.5 ANGSTROMS REMARK 1 TITL 2 RESOLUTION REMARK 1 REF THESIS, YALE REMARK 1 REFN REMARK 2 REMARK 2 RESOLUTION. 1.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROLSQ REMARK 3 AUTHORS : KONNERT,HENDRICKSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 5458 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : 0.155 REMARK 3 R VALUE (WORKING SET) : NULL REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 417 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 32 REMARK 3 SOLVENT ATOMS : 0 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.040 ; NULL REMARK 3 ANGLE DISTANCE (A) : NULL ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; NULL 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 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1AMT COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000171011. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 28.20 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.71 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL 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 14.81000 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 2950 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 5440 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -22.0 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 400 REMARK 400 COMPOUND REMARK 400 ALAMETHICIN F30 IS LINEAR PEPTIDE, A MEMBER OF THE PEPTAIBOL REMARK 400 FAMILY OF MEMBRANE CHANNEL FORMING PEPTIDES. REMARK 400 HERE, ALAMETHICIN F30 IS REPRESENTED BY THE SEQUENCE (SEQRES) REMARK 400 REMARK 400 THE ALAMETHICIN IS PEPTAIBOL, A MEMBER OF ANTIBIOTIC CLASS. REMARK 400 REMARK 400 GROUP: 1 REMARK 400 NAME: ALAMETHICIN REMARK 400 CHAIN: A, B, C REMARK 400 COMPONENT_1: PEPTIDE LIKE POLYMER REMARK 400 DESCRIPTION: ALAMETHICIN F30 IS AN EICOSAMERIC HELICAL PEPTIDE. REMARK 400 THE N-TERM IS ACETYLATED (RESIDUE 0) 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 ACE A 0 C AIB A 1 N -0.193 REMARK 500 AIB A 3 C ALA A 4 N -0.162 REMARK 500 GLU A 18 CD GLU A 18 OE2 -0.149 REMARK 500 ALA B 6 C GLN B 7 N -0.151 REMARK 500 GLY B 11 C GLY B 11 O 0.131 REMARK 500 AIB B 13 C PRO B 14 N -0.118 REMARK 500 VAL B 15 C VAL B 15 O 0.133 REMARK 500 GLU B 18 C GLU B 18 O 0.167 REMARK 500 GLN B 19 CD GLN B 19 NE2 -0.215 REMARK 500 PRO C 2 C PRO C 2 O 0.130 REMARK 500 AIB C 5 C ALA C 6 N -0.142 REMARK 500 GLU C 18 CD GLU C 18 OE1 -0.112 REMARK 500 GLU C 18 C GLU C 18 O 0.162 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 VAL A 15 CG1 - CB - CG2 ANGL. DEV. = 10.4 DEGREES REMARK 500 VAL A 15 CA - CB - CG2 ANGL. DEV. = -9.3 DEGREES REMARK 500 ALA B 6 CA - C - N ANGL. DEV. = 13.3 DEGREES REMARK 500 GLY B 11 CA - C - N ANGL. DEV. = 14.3 DEGREES REMARK 500 GLY B 11 O - C - N ANGL. DEV. = -11.3 DEGREES REMARK 500 PRO B 14 CB - CA - C ANGL. DEV. = 16.9 DEGREES REMARK 500 VAL B 15 O - C - N ANGL. DEV. = -13.6 DEGREES REMARK 500 AIB B 16 C - N - CA ANGL. DEV. = 18.4 DEGREES REMARK 500 GLU B 18 OE1 - CD - OE2 ANGL. DEV. = -9.6 DEGREES REMARK 500 GLY C 11 CA - C - O ANGL. DEV. = -15.8 DEGREES REMARK 500 AIB C 17 CA - C - N ANGL. DEV. = 13.6 DEGREES REMARK 500 AIB C 17 O - C - N ANGL. DEV. = -10.2 DEGREES REMARK 500 GLU C 18 OE1 - CD - OE2 ANGL. DEV. = -8.7 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 VAL A 15 13.13 REMARK 500 GLY C 11 10.83 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 CCN B 22 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CCN A 22 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN A OF ALAMETHICIN F30 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN B OF ALAMETHICIN F30 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR CHAIN C OF ALAMETHICIN F30 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1M24 RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF THE PEPTAIBOL TRICHOTOXIN_A50E REMARK 900 RELATED ID: 1R9U RELATED DB: PDB REMARK 900 SOLUTION STRUCTURE OF THE PEPTAIBOL ZERVAMICIN IIB IN METHANOL REMARK 900 RELATED ID: 1DLZ RELATED DB: PDB REMARK 900 SOLUTION STRUCTURE OF THE PEPTIABOL ZERVAMICIN IIB REMARK 900 RELATED ID: 1IH9 RELATED DB: PDB REMARK 900 SOLUTION STRUCTURE OF THE PEPTAIBOL ZERVAMICIN IIB BOUND TO DPC REMARK 900 MICELLES REMARK 900 RELATED ID: 1GQ0 RELATED DB: PDB REMARK 900 SOLUTION STRUCTURE OF THE PEPTAIBOL ANTIAMOEBIN I REMARK 900 RELATED ID: 1JOH RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF THE PEPTAIBOL ANTIAMOEBIN I REMARK 900 RELATED ID: 1EE7 RELATED DB: PDB REMARK 900 SOLUTION STRUCTURE OF THE PEPTAIBOL CHRYSOSPERMIN C BOUND TO DPC REMARK 900 MICELLES REMARK 900 RELATED ID: 1OB7 RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF THE PEPTAIBOL CEPHAIBOL C REMARK 900 RELATED ID: 1OB6 RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF THE PEPTAIBOL CEPHAIBOL B REMARK 900 RELATED ID: 1OB4 RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF THE PEPTAIBOL CEPHAIBOL A DBREF 1AMT A 0 20 NOR NOR00010 NOR00010 0 20 DBREF 1AMT B 0 20 NOR NOR00010 NOR00010 0 20 DBREF 1AMT C 0 20 NOR NOR00010 NOR00010 0 20 SEQRES 1 A 21 ACE AIB PRO AIB ALA AIB ALA GLN AIB VAL AIB GLY LEU SEQRES 2 A 21 AIB PRO VAL AIB AIB GLU GLN PHL SEQRES 1 B 21 ACE AIB PRO AIB ALA AIB ALA GLN AIB VAL AIB GLY LEU SEQRES 2 B 21 AIB PRO VAL AIB AIB GLU GLN PHL SEQRES 1 C 21 ACE AIB PRO AIB ALA AIB ALA GLN AIB VAL AIB GLY LEU SEQRES 2 C 21 AIB PRO VAL AIB AIB GLU GLN PHL HET ACE A 0 3 HET AIB A 1 6 HET AIB A 3 6 HET AIB A 5 6 HET AIB A 8 6 HET AIB A 10 6 HET AIB A 13 6 HET AIB A 16 6 HET AIB A 17 6 HET PHL A 20 11 HET ACE B 0 3 HET AIB B 1 6 HET AIB B 3 6 HET AIB B 5 6 HET AIB B 8 6 HET AIB B 10 6 HET AIB B 13 6 HET AIB B 16 6 HET AIB B 17 6 HET PHL B 20 11 HET ACE C 0 3 HET AIB C 1 6 HET AIB C 3 6 HET AIB C 5 6 HET AIB C 8 6 HET AIB C 10 6 HET AIB C 13 6 HET AIB C 16 6 HET AIB C 17 6 HET PHL C 20 11 HET CCN A 22 3 HET MOH A 23 2 HET CCN B 22 3 HET MOH B 23 2 HET MOH B 24 2 HET MOH B 25 2 HET MOH B 26 2 HET MOH B 27 2 HET MOH B 28 2 HET MOH B 29 2 HET MOH B 30 2 HET MOH C 22 2 HET MOH C 23 2 HET MOH C 24 2 HET MOH C 25 2 HETNAM ACE ACETYL GROUP HETNAM AIB ALPHA-AMINOISOBUTYRIC ACID HETNAM PHL L-PHENYLALANINOL HETNAM CCN ACETONITRILE HETNAM MOH METHANOL FORMUL 1 ACE 3(C2 H4 O) FORMUL 1 AIB 24(C4 H9 N O2) FORMUL 1 PHL 3(C9 H13 N O) FORMUL 4 CCN 2(C2 H3 N) FORMUL 5 MOH 13(C H4 O) HELIX 1 1 AIB A 1 GLU A 18 1 18 HELIX 2 2 AIB B 1 PHL B 20 1 20 HELIX 3 3 AIB C 1 LEU C 12 1 12 HELIX 4 4 LEU C 12 PHL C 20 1 9 LINK C ACE A 0 N AIB A 1 1555 1555 1.14 LINK C AIB A 1 N PRO A 2 1555 1555 1.25 LINK C PRO A 2 N AIB A 3 1555 1555 1.28 LINK C AIB A 3 N ALA A 4 1555 1555 1.17 LINK C ALA A 4 N AIB A 5 1555 1555 1.24 LINK C AIB A 5 N ALA A 6 1555 1555 1.28 LINK C GLN A 7 N AIB A 8 1555 1555 1.25 LINK C AIB A 8 N VAL A 9 1555 1555 1.26 LINK C VAL A 9 N AIB A 10 1555 1555 1.41 LINK C AIB A 10 N GLY A 11 1555 1555 1.31 LINK C LEU A 12 N AIB A 13 1555 1555 1.33 LINK C AIB A 13 N PRO A 14 1555 1555 1.32 LINK C VAL A 15 N AIB A 16 1555 1555 1.32 LINK C AIB A 16 N AIB A 17 1555 1555 1.34 LINK C AIB A 17 N GLU A 18 1555 1555 1.36 LINK C GLN A 19 N PHL A 20 1555 1555 1.32 LINK C ACE B 0 N AIB B 1 1555 1555 1.25 LINK C AIB B 1 N PRO B 2 1555 1555 1.32 LINK C PRO B 2 N AIB B 3 1555 1555 1.23 LINK C AIB B 3 N ALA B 4 1555 1555 1.28 LINK C ALA B 4 N AIB B 5 1555 1555 1.29 LINK C AIB B 5 N ALA B 6 1555 1555 1.34 LINK C GLN B 7 N AIB B 8 1555 1555 1.34 LINK C AIB B 8 N VAL B 9 1555 1555 1.27 LINK C VAL B 9 N AIB B 10 1555 1555 1.33 LINK C AIB B 10 N GLY B 11 1555 1555 1.21 LINK C LEU B 12 N AIB B 13 1555 1555 1.28 LINK C AIB B 13 N PRO B 14 1555 1555 1.22 LINK C VAL B 15 N AIB B 16 1555 1555 1.24 LINK C AIB B 16 N AIB B 17 1555 1555 1.29 LINK C AIB B 17 N GLU B 18 1555 1555 1.31 LINK C GLN B 19 N PHL B 20 1555 1555 1.37 LINK C ACE C 0 N AIB C 1 1555 1555 1.25 LINK C AIB C 1 N PRO C 2 1555 1555 1.30 LINK C PRO C 2 N AIB C 3 1555 1555 1.20 LINK C AIB C 3 N ALA C 4 1555 1555 1.24 LINK C ALA C 4 N AIB C 5 1555 1555 1.30 LINK C AIB C 5 N ALA C 6 1555 1555 1.19 LINK C GLN C 7 N AIB C 8 1555 1555 1.33 LINK C AIB C 8 N VAL C 9 1555 1555 1.24 LINK C VAL C 9 N AIB C 10 1555 1555 1.26 LINK C AIB C 10 N GLY C 11 1555 1555 1.37 LINK C LEU C 12 N AIB C 13 1555 1555 1.31 LINK C AIB C 13 N PRO C 14 1555 1555 1.26 LINK C VAL C 15 N AIB C 16 1555 1555 1.38 LINK C AIB C 16 N AIB C 17 1555 1555 1.29 LINK C AIB C 17 N GLU C 18 1555 1555 1.25 LINK C GLN C 19 N PHL C 20 1555 1555 1.32 SITE 1 AC1 2 ALA B 4 AIB C 5 SITE 1 AC2 3 GLU A 18 AIB C 17 PHL C 20 SITE 1 AC3 8 CCN A 22 ACE B 0 GLN B 7 GLU B 18 SITE 2 AC3 8 PRO C 2 AIB C 3 GLN C 7 PHL C 20 SITE 1 AC4 12 AIB A 1 AIB A 5 GLN A 19 CCN B 22 SITE 2 AC4 12 ALA C 4 GLN C 7 GLY C 11 LEU C 12 SITE 3 AC4 12 PRO C 14 GLU C 18 GLN C 19 PHL C 20 SITE 1 AC5 14 AIB A 1 ALA A 4 GLN A 19 PHL A 20 SITE 2 AC5 14 CCN A 22 ACE B 0 ALA B 6 GLN B 7 SITE 3 AC5 14 AIB B 10 PRO B 14 VAL B 15 GLU B 18 SITE 4 AC5 14 GLN B 19 CCN B 22 CRYST1 33.330 29.620 23.200 90.00 120.40 90.00 P 1 21 1 6 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 0.030003 0.000000 0.017603 0.00000 SCALE2 0.000000 0.033761 0.000000 0.00000 SCALE3 0.000000 0.000000 0.049974 0.00000 HETATM 1 C ACE A 0 47.951 1.513 -1.337 1.00 3.22 C HETATM 2 O ACE A 0 46.783 1.173 -0.780 1.00 3.84 O HETATM 3 CH3 ACE A 0 49.084 0.832 -0.475 1.00 6.05 C HETATM 4 N AIB A 1 48.065 2.462 -1.964 1.00 2.06 N HETATM 5 CA AIB A 1 46.920 3.266 -2.573 1.00 2.00 C HETATM 6 C AIB A 1 45.865 2.301 -3.116 1.00 5.00 C HETATM 7 O AIB A 1 44.700 2.587 -2.746 1.00 3.21 O HETATM 8 CB1 AIB A 1 47.457 4.132 -3.656 1.00 4.50 C HETATM 9 CB2 AIB A 1 46.329 4.215 -1.516 1.00 5.09 C