1QCE - Header Asymmetric Unit

HEADER VIRAL PROTEIN 30-APR-99 1QCE

TITLE SOLUTION NMR STRUCTURE OF ECTODOMAIN OF SIV GP41, TITLE 2 RESTRAINED REGULARIZED MEAN STRUCTURE PLUS 29 SIMULATED TITLE 3 ANNEALING STRUCTURES

COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN (GP41); COMPND 3 CHAIN: A, B, C; COMPND 4 FRAGMENT: ECTODOMAIN, RESIDUES 27 - 149, NUMBERED 1 - 123

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SIMIAN IMMUNODEFICIENCY VIRUS; SOURCE 3 ORGANISM_TAXID: 11723; SOURCE 4 STRAIN: SOOTEY MANGABEY

KEYWDS VIRUS ENVELOPE PROTEIN, SIV GP41 ECTODOMAIN, VIRAL PROTEIN

EXPDTA SOLUTION NMR

NUMMDL 30

AUTHOR G.M.CLORE

REVDAT 2 24-FEB-09 1QCE 1 VERSN REVDAT 1 18-JUL-99 1QCE 0

JRNL AUTH J.KUSZEWSKI,A.M.GRONENBORN,G.M.CLORE JRNL TITL MEASUREMENT OF RESIDUAL DIPOLAR COUPLINGS OF JRNL TITL 2 MACROMOLECULES ALIGNED IN THE NEMATIC PHASE OF JRNL TITL 3 ACOLLOIDAL SUSPENSION OF ROD-SHAPED VIRUSES JRNL REF J.AM.CHEM.SOC. V. 121 2337 1999 JRNL REFN ISSN 0002-7863 JRNL DOI 10.1021/JA9843730

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH M.CAFFREY,M.CAI,J.KAUFMAN,S.J.STAHL,P.T.WINGFIELD, REMARK 1 AUTH 2 D.G.COVELL,A.M.GRONENBORN,G.M.CLORE REMARK 1 TITL THREE-DIMENSIONAL SOLUTION STRUCTURE OF THE 44 KDA REMARK 1 TITL 2 ECTODOMAIN OF SIV GP41 REMARK 1 REF EMBO J. V. 17 4572 1998 REMARK 1 REFN ISSN 0261-4189 REMARK 1 DOI 10.1093/EMBOJ/17.16.4572 REMARK 1 REFERENCE 2 REMARK 1 AUTH M.CAFFREY,M.CAI,J.KAUFMAN,S.J.STAHL,P.T.WINGFIELD, REMARK 1 AUTH 2 A.M.GRONENBORN,G.M.CLORE REMARK 1 TITL DETERMINATION OF THE SECONDARY STRUCTURE AND REMARK 1 TITL 2 GLOBAL TOPOLOGY OF THE 44 KDA ECTODOMAIN OF GP41 REMARK 1 TITL 3 OF THE SIMIAN IMMUNODEFICIENCY VIRUS BY REMARK 1 TITL 4 MULTIDIMENSIONAL NUCLEAR MAGNETIC RESONANCE REMARK 1 TITL 5 SPECTROSCOPY REMARK 1 REF J.MOL.BIOL. V. 271 819 1997 REMARK 1 REFN ISSN 0022-2836 REMARK 1 DOI 10.1006/JMBI.1997.1217

REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS/XPLOR REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 KUNSTLEVE,JIANG,KUSZEWSKI,NILGES, PANNU,READ, REMARK 3 RICE,SIMONSON,WARREN REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: REMARK 3 TERMS IN THE TARGET FUNCTION USED FOR SIMULATED ANNEALING: REMARK 3 NOE (SUM AVERAGING) AND TORSION ANGLE RESTRAINTS REMARK 3 3JHNALPHA COUPLING CONSTANT RESTRAINTS REMARK 3 AND THREE_BOND DEUTERIUMCALPHA(ND) ISOTOPE REMARK 3 RESTRAINTS (GARRETT ET AL REMARK 3 J. MAGN. RESON. B104, 99-103 (1994)). REMARK 3 13CALPHA AND 13CBETA CHEMISCAL SHIFT RESTRAINTS REMARK 3 (KUSZEWSKI ET AL J> MAGN RESON B106, 92-96 (1995)) REMARK 3 TERM FOR THE RADIUS OF GYRATION (KUSZEWSKI J, GRONENB REMARK 3 CLORE, GM J AM CHEM SOC 121, 2337-2338 (1999)) REMARK 3 TORSION ANGLE DATABASE POTENTIAL (KUSZEWSKI J, GRONEN REMARK 3 CLORE GM. PROTEIN SCI 5, 1067-1080 (1996); J. MAGN REMARK 3 125, 171-177 (1997)). REMARK 3 COVALENT GEOMETRY RESTRAINTS (BONDS, ANGLES, IMPROPER REMARK 3 QUARTIC VAN DER WAALS REPULSION TERM (NILGES. M, REMARK 3 GRONENBORN, A.M., BRUNGER, A.T., CLORE, G.M. (1988) REMARK 3 PROTEIN ENG. 2, 27-38).

REMARK 4 REMARK 4 1QCE COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 10-MAY-99. REMARK 100 THE RCSB ID CODE IS RCSB000994.

REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 322.00 REMARK 210 PH : 3.00 REMARK 210 IONIC STRENGTH : NULL REMARK 210 PRESSURE : NULL REMARK 210 SAMPLE CONTENTS : NULL REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : TRIPLE RESONANCE FOR REMARK 210 ASSIGNMENT OF PROTEIN: D-HNCA, REMARK 210 D-HNCO, D-HN(CO) CA, D-HN(CA) REMARK 210 CO D-HNCACB, D-HN(COCA)CB, D- REMARK 210 HN(CA) CB, D-C(CC)(CO)NH, REMARK 210 HBHA(CO)NH, HCACO, HNHA, HCCH- REMARK 210 COSY, HCCH- TOCSY, 4D HCCH 13C REMARK 210 -13C NOE, QUANTITATIVE J REMARK 210 CORRELATION FOR COUPLING REMARK 210 CONSTANTS, 3D 15N- SEPARATED REMARK 210 NOE AND ROE, 3D 13C-SEPARATED REMARK 210 NOE, 3D 13C-SEPARATED/12C_ REMARK 210 FILTERED NOE, 3D 13C- REMARK 210 SEPARATED/15N-FILTERED NOE, 3D REMARK 210 15N-SEPARATED/ 13C-FILTERED REMARK 210 NOE, 4D 15N/15N-SEPARATED NOE, REMARK 210 4D 15N/13C-SEPARATED NOE AND REMARK 210 4D 13C/13C-SEPARATED NOE REMARK 210 EXPERIMENTS, 3D HCA(CO)N FOR REMARK 210 THREE-BOND AMIDE DEUTERIUM REMARK 210 ISOTOPE SHIFTS REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ, 600 MHZ, 750 MHZ REMARK 210 SPECTROMETER MODEL : DMX500, DMX600, DMX750 REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : XPLOR/CNS REMARK 210 METHOD USED : SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 30 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 30 REMARK 210 CONFORMERS, SELECTION CRITERIA : NULL REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1 REMARK 210 REMARK 210 REMARK: NULL

REMARK 215 REMARK 215 NMR STUDY REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION REMARK 215 NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON REMARK 215 THESE RECORDS ARE MEANINGLESS.

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 1 ASN A 56 -67.80 -133.49 REMARK 500 1 ALA A 60 39.49 -72.01 REMARK 500 1 ALA A 61 115.67 -165.00 REMARK 500 1 VAL A 65 57.50 -105.83 REMARK 500 1 PRO A 73 145.61 -38.04 REMARK 500 1 ASN B 56 -67.78 -133.52 REMARK 500 1 ALA B 60 39.45 -72.02 REMARK 500 1 ALA B 61 115.74 -164.89 REMARK 500 1 VAL B 65 57.48 -105.81 REMARK 500 1 PRO B 73 145.58 -37.98 REMARK 500 1 ASN C 56 -67.81 -133.47 REMARK 500 1 ALA C 60 39.40 -71.97 REMARK 500 1 ALA C 61 115.66 -164.89 REMARK 500 1 VAL C 65 57.46 -105.74 REMARK 500 1 PRO C 73 145.62 -37.96 REMARK 500 2 ASN A 56 -61.95 -133.03 REMARK 500 2 ALA A 60 23.05 -71.74 REMARK 500 2 VAL A 65 60.34 -107.00 REMARK 500 2 TRP A 81 -70.01 -81.91 REMARK 500 2 ASN B 56 -61.95 -132.94 REMARK 500 2 ALA B 60 23.06 -72.03 REMARK 500 2 VAL B 65 59.89 -107.30 REMARK 500 2 ASN C 56 -62.22 -133.03 REMARK 500 2 ALA C 60 22.86 -71.98 REMARK 500 2 VAL C 65 60.11 -107.21 REMARK 500 3 ASN A 56 -69.29 -131.77 REMARK 500 3 ALA A 60 25.50 -78.04 REMARK 500 3 ARG A 63 22.48 -148.28 REMARK 500 3 VAL A 65 59.73 -110.78 REMARK 500 3 PRO A 73 147.80 -37.53 REMARK 500 3 ASN A 74 -58.25 -129.63 REMARK 500 3 ASN A 122 59.07 -119.70 REMARK 500 3 ASN B 56 -69.25 -131.66 REMARK 500 3 ALA B 60 25.26 -77.76 REMARK 500 3 ARG B 63 22.51 -148.42 REMARK 500 3 VAL B 65 59.52 -110.62 REMARK 500 3 PRO B 73 147.97 -37.50 REMARK 500 3 ASN B 74 -57.98 -129.90 REMARK 500 3 ASN B 122 59.12 -119.93 REMARK 500 3 ASN C 56 -69.22 -131.60 REMARK 500 3 ALA C 60 25.28 -77.96 REMARK 500 3 ARG C 63 22.35 -148.32 REMARK 500 3 VAL C 65 59.70 -110.60 REMARK 500 3 PRO C 73 148.02 -37.33 REMARK 500 3 ASN C 74 -58.45 -129.92 REMARK 500 4 ASN A 56 -69.94 -133.94 REMARK 500 4 VAL A 65 57.58 -103.73 REMARK 500 4 PRO A 73 146.02 -39.97 REMARK 500 4 TRP A 81 -70.33 -85.75 REMARK 500 4 ASN A 122 58.00 -119.21 REMARK 500 4 ASN B 56 -69.91 -134.00 REMARK 500 4 VAL B 65 57.38 -104.16 REMARK 500 4 PRO B 73 145.67 -39.99 REMARK 500 4 TRP B 81 -70.53 -85.56 REMARK 500 4 ASN B 122 58.34 -119.16 REMARK 500 4 ASN C 56 -70.02 -133.98 REMARK 500 4 VAL C 65 57.56 -103.64 REMARK 500 4 PRO C 73 145.87 -39.86 REMARK 500 4 TRP C 81 -70.75 -85.91 REMARK 500 5 ASN A 56 -62.53 -131.11 REMARK 500 5 ALA A 57 87.97 -154.60 REMARK 500 5 ALA A 60 25.29 -78.91 REMARK 500 5 ARG A 63 24.07 -154.64 REMARK 500 5 VAL A 65 55.07 -112.44 REMARK 500 5 PRO A 71 62.73 -57.07 REMARK 500 5 PRO A 73 145.23 -36.70 REMARK 500 5 TRP A 81 -71.33 -90.77 REMARK 500 5 ASN B 56 -62.77 -131.10 REMARK 500 5 ALA B 57 87.83 -154.56 REMARK 500 5 ALA B 60 25.18 -78.69 REMARK 500 5 ARG B 63 23.96 -154.54 REMARK 500 5 VAL B 65 55.27 -112.51 REMARK 500 5 PRO B 71 62.82 -57.12 REMARK 500 5 PRO B 73 145.14 -36.92 REMARK 500 5 TRP B 81 -71.22 -90.61 REMARK 500 5 ASN C 56 -62.52 -131.32 REMARK 500 5 ALA C 57 87.98 -154.73 REMARK 500 5 ALA C 60 25.21 -78.71 REMARK 500 5 ARG C 63 23.96 -154.70 REMARK 500 5 VAL C 65 55.38 -112.30 REMARK 500 5 PRO C 71 62.63 -57.06 REMARK 500 5 PRO C 73 145.07 -36.67 REMARK 500 5 TRP C 81 -71.42 -90.48 REMARK 500 6 ASN A 56 -62.79 -130.37 REMARK 500 6 ALA A 57 88.73 -154.11 REMARK 500 6 ALA A 60 25.28 -76.89 REMARK 500 6 ARG A 63 24.32 -155.38 REMARK 500 6 VAL A 65 55.18 -110.54 REMARK 500 6 PRO A 71 66.84 -58.81 REMARK 500 6 PRO A 73 147.88 -37.05 REMARK 500 6 ASN A 74 -60.70 -129.93 REMARK 500 6 ASN B 56 -62.63 -130.66 REMARK 500 6 ALA B 57 89.07 -154.29 REMARK 500 6 ALA B 60 25.27 -76.90 REMARK 500 6 ARG B 63 24.72 -155.33 REMARK 500 6 VAL B 65 55.07 -110.02 REMARK 500 6 PRO B 71 66.57 -58.72 REMARK 500 6 PRO B 73 147.45 -36.96 REMARK 500 6 ASN B 74 -61.06 -129.59 REMARK 500 6 ASN C 56 -62.61 -130.86 REMARK 500 6 ALA C 57 88.07 -154.15 REMARK 500 6 ALA C 60 25.54 -76.87 REMARK 500 6 ARG C 63 24.60 -155.02 REMARK 500 6 VAL C 65 55.15 -110.66 REMARK 500 6 PRO C 71 66.75 -58.71 REMARK 500 6 PRO C 73 147.93 -36.76 REMARK 500 6 ASN C 74 -60.88 -130.02 REMARK 500 7 ASN A 56 -68.26 -133.17 REMARK 500 7 ALA A 60 23.24 -75.74 REMARK 500 7 VAL A 65 60.06 -104.45 REMARK 500 7 ASN B 56 -68.49 -133.23 REMARK 500 7 ALA B 60 23.18 -76.03 REMARK 500 7 VAL B 65 60.00 -104.38 REMARK 500 7 ASN C 56 -68.49 -133.09 REMARK 500 7 ALA C 60 22.95 -76.13 REMARK 500 7 VAL C 65 60.08 -104.21 REMARK 500 8 SER A 3 59.97 -90.06 REMARK 500 8 ASN A 56 -67.79 -134.14 REMARK 500 8 ALA A 60 24.28 -73.51 REMARK 500 8 VAL A 65 59.58 -106.25 REMARK 500 8 ASN B 56 -67.76 -133.84 REMARK 500 8 ALA B 60 23.73 -73.43 REMARK 500 8 VAL B 65 60.28 -106.38 REMARK 500 8 ASN C 56 -67.38 -134.37 REMARK 500 8 ALA C 60 23.97 -73.19 REMARK 500 8 VAL C 65 59.81 -106.26 REMARK 500 9 ASN A 56 -60.04 -133.25 REMARK 500 9 ALA A 60 22.85 -73.94 REMARK 500 9 ALA A 61 108.64 -161.89 REMARK 500 9 VAL A 65 61.19 -103.10 REMARK 500 9 ASN B 56 -60.51 -133.06 REMARK 500 9 ALA B 60 22.74 -74.25 REMARK 500 9 ALA B 61 108.09 -161.62 REMARK 500 9 VAL B 65 61.26 -103.12 REMARK 500 9 ASN C 56 -60.30 -133.37 REMARK 500 9 ALA C 60 22.69 -74.20 REMARK 500 9 ALA C 61 108.58 -161.65 REMARK 500 9 VAL C 65 61.29 -103.33 REMARK 500 10 ASN A 56 -61.18 -132.40 REMARK 500 10 ALA A 57 89.00 -151.52 REMARK 500 10 ALA A 60 23.26 -73.83 REMARK 500 10 VAL A 65 59.08 -105.32 REMARK 500 10 ASN B 56 -61.38 -132.73 REMARK 500 10 ALA B 57 88.98 -151.28 REMARK 500 10 ALA B 60 23.19 -73.36 REMARK 500 10 VAL B 65 59.22 -105.41 REMARK 500 10 ASN C 56 -61.35 -132.62 REMARK 500 10 ALA C 57 89.00 -151.40 REMARK 500 10 ALA C 60 22.97 -73.90 REMARK 500 10 VAL C 65 59.00 -105.40 REMARK 500 11 ASN A 56 -65.51 -134.08 REMARK 500 11 ALA A 60 22.69 -73.20 REMARK 500 11 VAL A 65 59.36 -104.10 REMARK 500 11 TRP A 81 -71.08 -92.20 REMARK 500 11 ASN B 56 -65.84 -134.30 REMARK 500 11 ALA B 60 22.54 -73.55 REMARK 500 11 VAL B 65 59.29 -104.13 REMARK 500 11 TRP B 81 -71.01 -92.07 REMARK 500 11 ASN C 56 -65.28 -133.92 REMARK 500 11 ALA C 60 22.55 -73.09 REMARK 500 11 VAL C 65 59.54 -104.16 REMARK 500 11 TRP C 81 -71.08 -92.05 REMARK 500 12 ASN A 56 -58.42 -132.54 REMARK 500 12 ALA A 60 21.93 -71.60 REMARK 500 12 ALA A 61 111.63 -162.75 REMARK 500 12 ARG A 63 25.40 -140.12 REMARK 500 12 VAL A 65 63.10 -102.43 REMARK 500 12 PRO A 73 146.75 -39.48 REMARK 500 12 ASN B 56 -58.77 -132.47 REMARK 500 12 ALA B 60 21.92 -71.83 REMARK 500 12 ALA B 61 111.17 -162.63 REMARK 500 12 ARG B 63 25.52 -140.08 REMARK 500 12 VAL B 65 62.80 -102.38 REMARK 500 12 PRO B 73 146.50 -39.65 REMARK 500 12 ASN C 56 -58.29 -132.31 REMARK 500 12 ALA C 60 22.03 -71.59 REMARK 500 12 ALA C 61 111.45 -162.71 REMARK 500 12 ARG C 63 25.44 -140.24 REMARK 500 12 VAL C 65 62.97 -102.25 REMARK 500 12 PRO C 73 146.63 -39.65 REMARK 500 13 SER A 3 58.90 -90.06 REMARK 500 13 ASN A 56 -65.25 -133.92 REMARK 500 13 ALA A 57 88.07 -151.73 REMARK 500 13 ALA A 60 23.38 -74.11 REMARK 500 13 VAL A 65 57.78 -108.19 REMARK 500 13 ASN A 74 -31.32 -130.76 REMARK 500 13 SER B 3 58.96 -90.21 REMARK 500 13 ASN B 56 -65.17 -133.99 REMARK 500 13 ALA B 57 87.87 -151.71 REMARK 500 13 ALA B 60 23.28 -74.37 REMARK 500 13 VAL B 65 57.56 -108.25 REMARK 500 13 ASN B 74 -31.21 -130.75 REMARK 500 13 SER C 3 58.83 -90.00 REMARK 500 13 ASN C 56 -65.03 -133.85 REMARK 500 13 ALA C 57 87.94 -151.89 REMARK 500 13 ALA C 60 23.39 -74.21 REMARK 500 13 VAL C 65 57.55 -108.23 REMARK 500 13 ASN C 74 -31.10 -130.64 REMARK 500 14 SER A 3 58.71 -90.31 REMARK 500 14 ASN A 56 -65.67 -132.72 REMARK 500 14 ALA A 60 22.46 -71.95 REMARK 500 14 VAL A 65 57.47 -106.97 REMARK 500 14 PRO A 73 146.11 -38.48 REMARK 500 14 SER B 3 58.61 -90.25 REMARK 500 14 ASN B 56 -65.66 -132.66 REMARK 500 14 ALA B 60 23.33 -71.60 REMARK 500 14 ALA B 61 116.13 -160.07 REMARK 500 14 VAL B 65 57.40 -107.25 REMARK 500 14 PRO B 73 145.99 -38.36 REMARK 500 14 SER C 3 58.74 -90.28 REMARK 500 14 ASN C 56 -65.87 -132.74 REMARK 500 14 ALA C 60 22.60 -71.52 REMARK 500 14 VAL C 65 57.65 -107.14 REMARK 500 14 PRO C 73 145.96 -38.50 REMARK 500 15 ASN A 56 -64.98 -133.74 REMARK 500 15 ALA A 60 22.44 -71.66 REMARK 500 15 VAL A 65 59.99 -106.76 REMARK 500 15 ASN B 56 -64.70 -133.72 REMARK 500 15 ALA B 60 22.52 -71.44 REMARK 500 15 VAL B 65 59.87 -106.78 REMARK 500 15 ASN C 56 -64.77 -133.85 REMARK 500 15 ALA C 60 22.48 -71.74 REMARK 500 15 VAL C 65 59.92 -106.94 REMARK 500 16 ASN A 56 -64.95 -132.99 REMARK 500 16 ALA A 57 88.09 -150.33 REMARK 500 16 ALA A 60 23.91 -74.04 REMARK 500 16 VAL A 65 58.69 -106.69 REMARK 500 16 PRO A 71 62.83 -62.76 REMARK 500 16 TRP A 81 -71.46 -91.43 REMARK 500 16 ASN B 56 -65.24 -132.75 REMARK 500 16 ALA B 60 24.60 -74.46 REMARK 500 16 VAL B 65 58.89 -106.72 REMARK 500 16 PRO B 71 62.70 -62.92 REMARK 500 16 TRP B 81 -71.90 -91.24 REMARK 500 16 ASN C 56 -66.10 -133.00 REMARK 500 16 ALA C 60 24.30 -74.66 REMARK 500 16 VAL C 65 59.06 -107.18 REMARK 500 16 PRO C 71 62.56 -62.78 REMARK 500 16 TRP C 81 -71.51 -91.28 REMARK 500 17 ASN A 56 -70.09 -133.68 REMARK 500 17 ALA A 60 24.76 -77.71 REMARK 500 17 VAL A 65 57.92 -105.52 REMARK 500 17 TRP A 81 -72.65 -89.72 REMARK 500 17 ASN B 56 -69.88 -133.36 REMARK 500 17 ALA B 60 24.94 -78.33 REMARK 500 17 VAL B 65 57.70 -105.92 REMARK 500 17 TRP B 81 -72.39 -89.57 REMARK 500 17 ASN C 56 -69.85 -133.39 REMARK 500 17 ALA C 60 24.64 -77.85 REMARK 500 17 VAL C 65 58.01 -105.72 REMARK 500 17 TRP C 81 -72.16 -89.72 REMARK 500 18 ASN A 56 -62.99 -133.20 REMARK 500 18 ALA A 60 23.26 -77.06 REMARK 500 18 ARG A 63 24.26 -143.75 REMARK 500 18 VAL A 65 59.82 -107.14 REMARK 500 18 ASN B 56 -63.25 -133.38 REMARK 500 18 ALA B 60 23.42 -77.08 REMARK 500 18 ARG B 63 24.32 -143.69 REMARK 500 18 VAL B 65 59.88 -106.91 REMARK 500 18 ASN C 56 -62.96 -133.35 REMARK 500 18 ALA C 60 23.23 -76.96 REMARK 500 18 ARG C 63 24.33 -143.75 REMARK 500 18 VAL C 65 59.92 -107.05 REMARK 500 19 SER A 3 59.84 -90.66 REMARK 500 19 ASN A 56 -73.17 -132.92 REMARK 500 19 ALA A 60 35.43 -80.51 REMARK 500 19 ARG A 63 26.75 -142.28 REMARK 500 19 VAL A 65 57.06 -114.63 REMARK 500 19 PRO A 73 148.08 -36.57 REMARK 500 19 ASN B 56 -73.47 -133.23 REMARK 500 19 ALA B 60 35.90 -80.46 REMARK 500 19 ARG B 63 26.86 -142.45 REMARK 500 19 VAL B 65 57.21 -114.59 REMARK 500 19 PRO B 73 148.00 -36.24 REMARK 500 19 SER C 3 59.97 -90.85 REMARK 500 19 ASN C 56 -73.36 -133.06 REMARK 500 19 ALA C 60 35.65 -80.35 REMARK 500 19 ARG C 63 26.60 -142.01 REMARK 500 19 VAL C 65 57.14 -114.70 REMARK 500 19 PRO C 73 148.22 -36.47 REMARK 500 20 ASN A 56 -63.11 -133.26 REMARK 500 20 ALA A 57 87.44 -150.45 REMARK 500 20 ALA A 60 24.13 -74.12 REMARK 500 20 VAL A 65 57.16 -105.39 REMARK 500 20 ASN B 56 -62.99 -133.15 REMARK 500 20 ALA B 57 87.28 -150.39 REMARK 500 20 ALA B 60 24.42 -73.84 REMARK 500 20 VAL B 65 57.19 -105.68 REMARK 500 20 ASN C 56 -63.02 -132.94 REMARK 500 20 ALA C 57 87.39 -150.40 REMARK 500 20 ALA C 60 24.25 -73.88 REMARK 500 20 VAL C 65 57.04 -105.18 REMARK 500 21 ASN A 56 -68.32 -132.65 REMARK 500 21 ALA A 60 23.50 -72.55 REMARK 500 21 VAL A 65 58.44 -109.67 REMARK 500 21 PRO A 73 145.99 -38.47 REMARK 500 21 ASN B 56 -68.26 -132.40 REMARK 500 21 ALA B 60 23.49 -72.97 REMARK 500 21 VAL B 65 58.50 -109.93 REMARK 500 21 PRO B 73 145.59 -38.47 REMARK 500 21 ASN C 56 -68.04 -132.32 REMARK 500 21 ALA C 60 23.46 -73.28 REMARK 500 21 VAL C 65 58.23 -109.53 REMARK 500 21 PRO C 73 145.72 -38.48 REMARK 500 22 SER A 3 59.43 -90.12 REMARK 500 22 ASN A 56 -70.04 -132.97 REMARK 500 22 ALA A 60 22.95 -75.35 REMARK 500 22 VAL A 65 58.26 -107.02 REMARK 500 22 PRO A 73 145.56 -39.55 REMARK 500 22 SER B 3 59.46 -90.04 REMARK 500 22 ASN B 56 -70.20 -132.81 REMARK 500 22 ALA B 60 23.10 -75.13 REMARK 500 22 VAL B 65 58.40 -107.15 REMARK 500 22 PRO B 73 145.54 -39.34 REMARK 500 22 SER C 3 59.51 -90.46 REMARK 500 22 ASN C 56 -70.03 -133.27 REMARK 500 22 ALA C 60 23.19 -74.79 REMARK 500 22 VAL C 65 58.25 -107.02 REMARK 500 22 PRO C 73 145.37 -39.40 REMARK 500 23 ASN A 56 -70.16 -134.17 REMARK 500 23 ALA A 60 23.82 -75.05 REMARK 500 23 VAL A 65 59.18 -104.16 REMARK 500 23 ASN B 56 -69.96 -134.54 REMARK 500 23 ALA B 60 23.58 -75.20 REMARK 500 23 VAL B 65 59.36 -104.41 REMARK 500 23 ASN C 56 -70.00 -134.33 REMARK 500 23 ALA C 60 23.90 -75.16 REMARK 500 23 VAL C 65 59.35 -104.19 REMARK 500 24 ASN A 56 -65.50 -131.33 REMARK 500 24 ALA A 57 88.76 -152.43 REMARK 500 24 ALA A 60 25.78 -78.23 REMARK 500 24 ARG A 63 23.85 -153.35 REMARK 500 24 VAL A 65 57.48 -113.11 REMARK 500 24 PRO A 71 69.61 -57.50 REMARK 500 24 PRO A 73 145.92 -37.05 REMARK 500 24 ASN A 74 -60.23 -131.18 REMARK 500 24 ASN B 56 -65.47 -131.38 REMARK 500 24 ALA B 57 88.75 -152.49 REMARK 500 24 ALA B 60 25.80 -78.17 REMARK 500 24 ARG B 63 23.85 -153.27 REMARK 500 24 VAL B 65 57.55 -113.29 REMARK 500 24 PRO B 71 69.54 -57.49 REMARK 500 24 PRO B 73 145.76 -37.06 REMARK 500 24 ASN B 74 -60.11 -131.14 REMARK 500 24 ASN C 56 -65.55 -131.37 REMARK 500 24 ALA C 57 88.72 -152.61 REMARK 500 24 ALA C 60 25.65 -78.15 REMARK 500 24 ARG C 63 24.13 -153.51 REMARK 500 24 VAL C 65 57.66 -113.23 REMARK 500 24 PRO C 71 69.61 -57.52 REMARK 500 24 PRO C 73 145.74 -37.00 REMARK 500 24 ASN C 74 -60.35 -131.05 REMARK 500 25 ASN A 56 -87.99 -131.94 REMARK 500 25 ALA A 60 33.09 -79.49 REMARK 500 25 VAL A 65 55.88 -111.36 REMARK 500 25 PRO A 71 65.05 -62.80 REMARK 500 25 ASN A 122 58.68 -117.37 REMARK 500 25 ASN B 56 -87.77 -132.00 REMARK 500 25 ALA B 60 32.92 -79.24 REMARK 500 25 VAL B 65 55.96 -111.33 REMARK 500 25 PRO B 71 65.08 -62.54 REMARK 500 25 ASN B 122 58.87 -117.26 REMARK 500 25 ASN C 56 -88.02 -132.09 REMARK 500 25 ALA C 60 33.39 -79.07 REMARK 500 25 VAL C 65 56.15 -111.52 REMARK 500 25 PRO C 71 65.08 -62.59 REMARK 500 25 ASN C 122 58.63 -118.79 REMARK 500 26 SER A 3 58.78 -91.78 REMARK 500 26 ASN A 56 -65.09 -133.38 REMARK 500 26 ALA A 60 23.30 -77.93 REMARK 500 26 ALA A 61 108.22 -160.53 REMARK 500 26 VAL A 65 60.37 -102.58 REMARK 500 26 SER B 3 58.99 -91.68 REMARK 500 26 ASN B 56 -64.82 -133.45 REMARK 500 26 ALA B 60 23.30 -77.63 REMARK 500 26 ALA B 61 108.07 -160.44 REMARK 500 26 VAL B 65 60.53 -102.64 REMARK 500 26 SER C 3 58.64 -91.72 REMARK 500 26 ASN C 56 -64.96 -133.25 REMARK 500 26 ALA C 60 23.09 -77.69 REMARK 500 26 ALA C 61 107.85 -160.17 REMARK 500 26 VAL C 65 60.35 -102.68 REMARK 500 27 ASN A 56 -74.54 -133.97 REMARK 500 27 ALA A 60 24.30 -78.22 REMARK 500 27 VAL A 65 58.06 -103.85 REMARK 500 27 ASN B 56 -74.40 -134.40 REMARK 500 27 ALA B 60 24.84 -78.25 REMARK 500 27 ALA B 61 116.95 -160.68 REMARK 500 27 VAL B 65 57.76 -103.95 REMARK 500 27 ASN C 56 -74.29 -134.24 REMARK 500 27 ALA C 60 24.66 -77.94 REMARK 500 27 ALA C 61 116.76 -160.23 REMARK 500 27 VAL C 65 57.52 -104.23 REMARK 500 28 ASN A 56 -66.41 -132.23 REMARK 500 28 ALA A 60 23.25 -72.26 REMARK 500 28 VAL A 65 59.90 -103.88 REMARK 500 28 ASN A 74 -52.16 -126.74 REMARK 500 28 ASN B 56 -66.14 -132.36 REMARK 500 28 ALA B 60 22.67 -72.58 REMARK 500 28 VAL B 65 59.75 -103.93 REMARK 500 28 ASN B 74 -52.58 -127.14 REMARK 500 28 ASN C 56 -66.71 -132.20 REMARK 500 28 ALA C 60 23.09 -73.01 REMARK 500 28 VAL C 65 59.95 -103.86 REMARK 500 28 ASN C 74 -51.92 -126.77 REMARK 500 29 ASN A 56 -63.92 -133.64 REMARK 500 29 ALA A 57 88.19 -151.76 REMARK 500 29 ALA A 60 24.29 -74.48 REMARK 500 29 VAL A 65 57.57 -105.45 REMARK 500 29 TRP A 81 -71.55 -90.88 REMARK 500 29 SER B 3 59.31 -90.10 REMARK 500 29 ASN B 56 -63.82 -133.54 REMARK 500 29 ALA B 57 88.27 -151.49 REMARK 500 29 ALA B 60 24.92 -74.75 REMARK 500 29 VAL B 65 57.46 -105.11 REMARK 500 29 TRP B 81 -71.46 -90.64 REMARK 500 29 ASN C 56 -64.48 -133.48 REMARK 500 29 ALA C 57 88.21 -150.94 REMARK 500 29 ALA C 60 24.92 -74.69 REMARK 500 29 VAL C 65 57.45 -105.31 REMARK 500 29 TRP C 81 -71.52 -90.75 REMARK 500 30 ASN A 56 -73.04 -133.03 REMARK 500 30 ALA A 60 25.90 -76.77 REMARK 500 30 ARG A 63 24.22 -157.10 REMARK 500 30 VAL A 65 58.04 -112.24 REMARK 500 30 ASN B 56 -72.49 -133.25 REMARK 500 30 ALA B 60 26.20 -77.86 REMARK 500 30 ARG B 63 24.17 -156.98 REMARK 500 30 VAL B 65 58.13 -112.36 REMARK 500 30 TRP B 81 -70.14 -88.03 REMARK 500 30 ASN C 56 -72.03 -132.85 REMARK 500 30 ALA C 57 87.45 -150.04 REMARK 500 30 ALA C 60 26.51 -77.98 REMARK 500 30 ARG C 63 24.05 -157.17 REMARK 500 30 VAL C 65 58.19 -112.46 REMARK 500 30 TRP C 81 -70.12 -87.53 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 1 ARG A 63 0.27 SIDE_CHAIN REMARK 500 1 ARG B 63 0.27 SIDE_CHAIN REMARK 500 1 ARG C 63 0.27 SIDE_CHAIN REMARK 500 REMARK 500 REMARK: NULL

REMARK 999 REMARK 999 SEQUENCE REMARK 999 1QCE A GB 431487 1 - 551 NOT IN ATOMS LIST REMARK 999 1QCE A GB 431487 675 - 876 NOT IN ATOMS LIST REMARK 999 1QCE B GB 431487 1 - 551 NOT IN ATOMS LIST REMARK 999 1QCE B GB 431487 675 - 876 NOT IN ATOMS LIST REMARK 999 1QCE C GB 431487 1 - 551 NOT IN ATOMS LIST REMARK 999 1QCE C GB 431487 675 - 876 NOT IN ATOMS LIST

DBREF 1QCE A 1 123 UNP Q88031 Q88031_SIVCZ 552 674 DBREF 1QCE B 1 123 UNP Q88031 Q88031_SIVCZ 552 674 DBREF 1QCE C 1 123 UNP Q88031 Q88031_SIVCZ 552 674

SEQADV 1QCE ALA A 60 UNP Q88031 CYS 611 CONFLICT SEQADV 1QCE ALA A 66 UNP Q88031 CYS 617 CONFLICT SEQADV 1QCE ALA B 60 UNP Q88031 CYS 611 CONFLICT SEQADV 1QCE ALA B 66 UNP Q88031 CYS 617 CONFLICT SEQADV 1QCE ALA C 60 UNP Q88031 CYS 611 CONFLICT SEQADV 1QCE ALA C 66 UNP Q88031 CYS 617 CONFLICT

SEQRES 1 A 123 ALA GLN SER ARG THR LEU LEU ALA GLY ILE VAL GLN GLN SEQRES 2 A 123 GLN GLN GLN LEU LEU ASP VAL VAL LYS ARG GLN GLN GLU SEQRES 3 A 123 LEU LEU ARG LEU THR VAL TRP GLY THR LYS ASN LEU GLN SEQRES 4 A 123 THR ARG VAL THR ALA ILE GLU LYS TYR LEU LYS ASP GLN SEQRES 5 A 123 ALA GLN LEU ASN ALA TRP GLY ALA ALA PHE ARG GLN VAL SEQRES 6 A 123 ALA HIS THR THR VAL PRO TRP PRO ASN ALA SER LEU THR SEQRES 7 A 123 PRO LYS TRP ASN ASN GLU THR TRP GLN GLU TRP GLU ARG SEQRES 8 A 123 LYS VAL ASP PHE LEU GLU GLU ASN ILE THR ALA LEU LEU SEQRES 9 A 123 GLU GLU ALA GLN ILE GLN GLN GLU LYS ASN MET TYR GLU SEQRES 10 A 123 LEU GLN LYS LEU ASN SER SEQRES 1 B 123 ALA GLN SER ARG THR LEU LEU ALA GLY ILE VAL GLN GLN SEQRES 2 B 123 GLN GLN GLN LEU LEU ASP VAL VAL LYS ARG GLN GLN GLU SEQRES 3 B 123 LEU LEU ARG LEU THR VAL TRP GLY THR LYS ASN LEU GLN SEQRES 4 B 123 THR ARG VAL THR ALA ILE GLU LYS TYR LEU LYS ASP GLN SEQRES 5 B 123 ALA GLN LEU ASN ALA TRP GLY ALA ALA PHE ARG GLN VAL SEQRES 6 B 123 ALA HIS THR THR VAL PRO TRP PRO ASN ALA SER LEU THR SEQRES 7 B 123 PRO LYS TRP ASN ASN GLU THR TRP GLN GLU TRP GLU ARG SEQRES 8 B 123 LYS VAL ASP PHE LEU GLU GLU ASN ILE THR ALA LEU LEU SEQRES 9 B 123 GLU GLU ALA GLN ILE GLN GLN GLU LYS ASN MET TYR GLU SEQRES 10 B 123 LEU GLN LYS LEU ASN SER SEQRES 1 C 123 ALA GLN SER ARG THR LEU LEU ALA GLY ILE VAL GLN GLN SEQRES 2 C 123 GLN GLN GLN LEU LEU ASP VAL VAL LYS ARG GLN GLN GLU SEQRES 3 C 123 LEU LEU ARG LEU THR VAL TRP GLY THR LYS ASN LEU GLN SEQRES 4 C 123 THR ARG VAL THR ALA ILE GLU LYS TYR LEU LYS ASP GLN SEQRES 5 C 123 ALA GLN LEU ASN ALA TRP GLY ALA ALA PHE ARG GLN VAL SEQRES 6 C 123 ALA HIS THR THR VAL PRO TRP PRO ASN ALA SER LEU THR SEQRES 7 C 123 PRO LYS TRP ASN ASN GLU THR TRP GLN GLU TRP GLU ARG SEQRES 8 C 123 LYS VAL ASP PHE LEU GLU GLU ASN ILE THR ALA LEU LEU SEQRES 9 C 123 GLU GLU ALA GLN ILE GLN GLN GLU LYS ASN MET TYR GLU SEQRES 10 C 123 LEU GLN LYS LEU ASN SER

HELIX 1 1 ARG A 4 GLN A 54 1 51 HELIX 2 2 TRP A 81 LEU A 121 1 41 HELIX 3 3 ARG B 4 GLN B 54 1 51 HELIX 4 4 TRP B 81 LEU B 121 1 41 HELIX 5 5 ARG C 4 GLN C 54 1 51 HELIX 6 6 TRP C 81 LEU C 121 1 41

CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 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