HEADER GURMARIN 13-AUG-98 2GUR OBSLTE 27-AUG-99 2GUR 1C4E TITLE GURMARIN FROM GYMNEMA SYLVESTRE COMPND MOL_ID: 1; COMPND 2 MOLECULE: GURMARIN; COMPND 3 CHAIN: NULL; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES KEYWDS GURMARIN, SWEET TASTE SUPPRESSION, CYSTINE KNOT, SWEET KEYWDS 2 TASTE TRANSDUCTION EXPDTA NMR, 20 STRUCTURES AUTHOR J.I.FLETCHER,A.J.DINGLEY,G.F.KING REVDAT 2 27-AUG-99 2GUR 1 OBSLTE REVDAT 1 19-AUG-98 2GUR 0 JRNL AUTH J.I.FLETCHER,A.J.DINGLEY,R.SMITH,M.CONNOR, JRNL AUTH 2 M.J.CHRISTIE,G.F.KING JRNL TITL HIGH-RESOLUTION SOLUTION STRUCTURE OF GURMARIN, A JRNL TITL 2 SWEET-TASTE SUPPRESSING PLANT POLYPEPTIDE JRNL REF TO BE PUBLISHED JRNL REFN REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH K.ARAI,R.ISHIMA,S.MORIKAWA,A.MIYASAKA,T.IMOTO, REMARK 1 AUTH 2 S.YOSHIMURA,S.AIMOTO,K.AKASAKA REMARK 1 TITL THREE-DIMENSIONAL STRUCTURE OF GURMARIN, A SWEET REMARK 1 TITL 2 TASTE-SUPPRESSING POLYPEPTIDE REMARK 1 REF J.BIOMOL.NMR V. 5 297 1995 REMARK 1 REFN ASTM JBNME9 NE ISSN 0925-2738 REMARK 1 REFERENCE 2 REMARK 1 AUTH K.KAMEI,R.TAKANO,A.MIYASAKA,T.IMOTO,S.HARA REMARK 1 TITL AMINO ACID SEQUENCE OF SWEET-TASTE-SUPPRESSING REMARK 1 TITL 2 PEPTIDE (GURMARIN) FROM THE LEAVES OF GYMNEMA REMARK 1 TITL 3 SYLVESTRE REMARK 1 REF J.BIOCHEM.(TOKYO) V. 111 109 1992 REMARK 1 REFN ASTM JOBIAO JA ISSN 0021-924X REMARK 1 REFERENCE 3 REMARK 1 AUTH T.IMOTO,A.MIYASAKA,R.ISHIMA,K.AKASAKA REMARK 1 TITL A NOVEL PEPTIDE ISOLATED FROM THE LEAVES OF REMARK 1 TITL 2 GYMNEMA SYLVESTRE-I. CHARACTERIZATION AND ITS REMARK 1 TITL 3 SUPPRESSIVE EFFECT ON THE NEURAL RESPONSES TO REMARK 1 TITL 4 SWEET TASTE STIMULI IN THE RAT REMARK 1 REF COMP.BIOCHEM.PHYSIOL., A: V. 100 309 1991 REMARK 1 REF 2 PHYSIOL. REMARK 1 REFN ASTM CBPAB5 ISSN 0300-9629 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : DYANA 1.5, X-PLOR 3.843 REMARK 3 AUTHORS : GUENTERT (DYANA), BRUNGER (X-PLOR) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: SEE PRIMARY REFERENCE ABOVE. REMARK 4 REMARK 4 2GUR COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998 REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 298 REMARK 210 PH : 2.9 REMARK 210 IONIC STRENGTH : NULL REMARK 210 PRESSURE : ATMOSPHERIC ATM REMARK 210 SAMPLE CONTENTS : NULL REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : NOESY, DQFCOSY, TOCSY, ECOSY REMARK 210 SPECTROMETER FIELD STRENGTH : 600 MHZ REMARK 210 SPECTROMETER MODEL : AMX600 REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : DYANA, X-PLOR REMARK 210 METHOD USED : DISTANCE GEOMETRY AND REMARK 210 DYNAMICAL SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 100 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 20 REMARK 210 CONFORMERS, SELECTION CRITERIA : LOWEST ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL REMARK 210 REMARK 210 REMARK: THE STRUCTURE WAS DETERMINED USING STANDARD 2D REMARK 210 HOMONUCLEAR TECHNIQUES 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: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI REMARK 500 O ILE 11 O LEU 15 2.17 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: ENGH AND HUBER, 1991 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 11 LEU 21 CA - CB - CG ANGL. DEV. = -2.2 DEGREES REMARK 500 15 LEU 21 CA - CB - CG ANGL. DEV. = -2.3 DEGREES 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 M RES CSSEQI PSI PHI REMARK 500 1 CYS 17 164.73 69.68 REMARK 500 8 TYR 13 -46.38 73.16 REMARK 500 9 CYS 17 168.71 60.60 REMARK 500 10 CYS 17 165.62 63.73 REMARK 500 11 GLU 19 153.71 83.86 REMARK 500 13 TYR 13 -51.40 80.56 REMARK 500 14 TYR 13 -49.07 75.94 REMARK 500 15 GLU 19 153.61 86.99 REMARK 500 16 CYS 17 165.91 58.29 REMARK 500 18 CYS 17 160.55 60.44 REMARK 700 REMARK 700 SHEET REMARK 700 DETERMINATION METHOD: PROMOTIF REMARK 750 REMARK 750 TURN REMARK 750 PROMOTIF REMARK 999 REMARK 999 SEQUENCE REMARK 999 RESIDUE 1 - PCA DBREF 2GUR 1 35 PDB 2GUR 2GUR 1 35 SEQRES 1 35 GLN GLN CYS VAL LYS LYS ASP GLU LEU CYS ILE PRO TYR SEQRES 2 35 TYR LEU ASP CYS CYS GLU PRO LEU GLU CYS LYS LYS VAL SEQRES 3 35 ASN TRP TRP ASP HIS LYS CYS ILE GLY MODRES 2GUR PCA 1 GLU PYROGLUTAMIC ACID HET PCA 1 14 HETNAM PCA PYROGLUTAMIC ACID FORMUL 1 PCA C5 H7 N O3 SHEET 1 A 2 GLU 22 LYS 25 0 SHEET 2 A 2 HIS 31 ILE 34 -1 O LYS 32 N LYS 24 SSBOND 1 CYS 3 CYS 18 SSBOND 2 CYS 10 CYS 23 SSBOND 3 CYS 17 CYS 33 CISPEP 1 GLU 19 PRO 20 1 0.11 CISPEP 2 GLU 19 PRO 20 2 0.01 CISPEP 3 GLU 19 PRO 20 3 0.26 CISPEP 4 GLU 19 PRO 20 4 0.13 CISPEP 5 GLU 19 PRO 20 5 0.00 CISPEP 6 GLU 19 PRO 20 6 -0.03 CISPEP 7 GLU 19 PRO 20 7 -0.13 CISPEP 8 GLU 19 PRO 20 8 -0.10 CISPEP 9 GLU 19 PRO 20 9 0.07 CISPEP 10 GLU 19 PRO 20 10 -0.08 CISPEP 11 GLU 19 PRO 20 11 0.02 CISPEP 12 GLU 19 PRO 20 12 0.20 CISPEP 13 GLU 19 PRO 20 13 0.01 CISPEP 14 GLU 19 PRO 20 14 -0.09 CISPEP 15 GLU 19 PRO 20 15 -0.10 CISPEP 16 GLU 19 PRO 20 16 -0.11 CISPEP 17 GLU 19 PRO 20 17 -0.19 CISPEP 18 GLU 19 PRO 20 18 -0.04 CISPEP 19 GLU 19 PRO 20 19 -0.08 CISPEP 20 GLU 19 PRO 20 20 -0.04 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 MODEL 1 HETATM 1 N PCA 1 -10.691 -10.507 -4.194 1.00 0.00 N HETATM 2 CA PCA 1 -9.333 -10.036 -3.995 1.00 0.00 C HETATM 3 CB PCA 1 -8.683 -11.087 -3.077 1.00 0.00 C HETATM 4 CG PCA 1 -9.879 -11.772 -2.401 1.00 0.00 C HETATM 5 CD PCA 1 -11.045 -11.440 -3.314 1.00 0.00 C HETATM 6 OE PCA 1 -12.172 -11.910 -3.174 1.00 0.00 O HETATM 7 C PCA 1 -8.589 -9.895 -5.326 1.00 0.00 C HETATM 8 O PCA 1 -7.836 -10.776 -5.734 1.00 0.00 O HETATM 9 HN PCA 1 -11.314 -10.108 -4.882 1.00 0.00 H HETATM 10 HA PCA 1 -9.353 -9.067 -3.493 1.00 0.00 H HETATM 11 1HB PCA 1 -8.108 -11.812 -3.657 1.00 0.00 H HETATM 12 2HB PCA 1 -8.043 -10.613 -2.330 1.00 0.00 H HETATM 13 1HG PCA 1 -9.729 -12.850 -2.351 1.00 0.00 H HETATM 14 2HG PCA 1 -10.046 -11.363 -1.404 1.00 0.00 H