HEADER INHIBITOR 08-APR-99 1QFD TITLE NMR SOLUTION STRUCTURE OF ALPHA-AMYLASE INHIBITOR (AAI) COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN (ALPHA-AMYLASE INHIBITOR); COMPND 3 CHAIN: A; COMPND 4 OTHER_DETAILS: SYNTHETIC SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: AMARANTHUS HYPOCHONDRIACUS; SOURCE 3 ORGANISM_COMMON: GRAIN AMARANTH; SOURCE 4 ORGANISM_TAXID: 28502; SOURCE 5 ORGAN: SEED; SOURCE 6 OTHER_DETAILS: SYNTHETIC SEQUENCE KEYWDS INHIBITOR EXPDTA SOLUTION NMR NUMMDL 10 AUTHOR S.LU,P.DENG,X.LIU,J.LUO,R.HAN,X.GU,S.LIANG,X.WANG,L.FENG,V.LOZANOV, AUTHOR 2 A.PATTHY,S.PONGOR REVDAT 5 27-DEC-23 1QFD 1 REMARK REVDAT 4 29-NOV-17 1QFD 1 REMARK HELIX REVDAT 3 24-FEB-09 1QFD 1 VERSN REVDAT 2 01-APR-03 1QFD 1 JRNL REVDAT 1 16-JUL-99 1QFD 0 JRNL AUTH S.LU,P.DENG,X.LIU,J.LUO,R.HAN,X.GU,S.LIANG,X.WANG,F.LI, JRNL AUTH 2 V.LOZANOV,A.PATTHY,S.PONGOR JRNL TITL SOLUTION STRUCTURE OF THE MAJOR ALPHA-AMYLASE INHIBITOR OF JRNL TITL 2 THE CROP PLANT AMARANTH. JRNL REF J.BIOL.CHEM. V. 274 20473 1999 JRNL REFN ISSN 0021-9258 JRNL PMID 10400675 JRNL DOI 10.1074/JBC.274.29.20473 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH V.LOZANOV,C.GUARNACCIA,A.PATTHY,S.FOTI,S.PONGOR REMARK 1 TITL SYNTHESIS AND CYSTINE/CYSTEINE-CATALYZED OXIDATIVE FOLDING REMARK 1 TITL 2 OF THE AMARANTH ALPHA-AMYLASE INHIBITOR REMARK 1 REF J.PEPT.RES. V.50(1 65 1997 REMARK 1 REFN ISSN 1397-002X REMARK 1 REFERENCE 2 REMARK 1 AUTH A.CHAGOLLA-LOPEZ,A.BLANCO-LABRA,A.PATTHY,R.SANCHEZ,S.PONGOR REMARK 1 TITL A NOVEL ALPHA-AMYLASE INHIBITOR FROM AMARANTH (AMARANTHUS REMARK 1 TITL 2 HYPOCONDRIACUS)SEEDS REMARK 1 REF J.BIOL.CHEM. V. 269 23675 1994 REMARK 1 REFN ISSN 0021-9258 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.851 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1QFD COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-APR-99. REMARK 100 THE DEPOSITION ID IS D_1000000816. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 300 REMARK 210 PH : 6.5 REMARK 210 IONIC STRENGTH : 20 MM REMARK 210 PRESSURE : 1 ATM REMARK 210 SAMPLE CONTENTS : 90% WATER/10% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : NOESY; COSY; TOCSY; DQF-COSY REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ REMARK 210 SPECTROMETER MODEL : AMX500 REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : SYBYL, X-PLOR REMARK 210 METHOD USED : SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 50 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 10 REMARK 210 CONFORMERS, SELECTION CRITERIA : LEAST RESTRAINT VIOLATION AND REMARK 210 RESULT OF PROCHECK REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL 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 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: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A 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 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 LYS A 4 153.20 -46.68 REMARK 500 4 CYS A 18 170.44 -59.16 REMARK 500 5 PRO A 20 0.25 -68.51 REMARK 500 6 TYR A 27 -61.39 -106.90 REMARK 500 7 PRO A 20 0.88 -67.74 REMARK 500 8 PRO A 20 0.82 -69.17 REMARK 500 8 SER A 25 -159.87 -119.38 REMARK 500 9 TYR A 27 -60.78 -93.91 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 7 0.30 SIDE CHAIN REMARK 500 2 ARG A 7 0.32 SIDE CHAIN REMARK 500 3 ARG A 7 0.32 SIDE CHAIN REMARK 500 4 ARG A 7 0.29 SIDE CHAIN REMARK 500 5 ARG A 7 0.30 SIDE CHAIN REMARK 500 6 ARG A 7 0.32 SIDE CHAIN REMARK 500 7 ARG A 7 0.29 SIDE CHAIN REMARK 500 8 ARG A 7 0.31 SIDE CHAIN REMARK 500 9 ARG A 7 0.32 SIDE CHAIN REMARK 500 10 ARG A 7 0.31 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL DBREF 1QFD A 1 32 UNP P80403 IAAI_AMAHP 1 32 SEQRES 1 A 32 CYS ILE PRO LYS TRP ASN ARG CYS GLY PRO LYS MET ASP SEQRES 2 A 32 GLY VAL PRO CYS CYS GLU PRO TYR THR CYS THR SER ASP SEQRES 3 A 32 TYR TYR GLY ASN CYS SER HELIX 1 1 PRO A 10 ASP A 13 1 4 SHEET 1 S1 1 ARG A 7 CYS A 8 0 SHEET 1 S2 1 THR A 22 THR A 24 0 SHEET 1 S3 1 GLY A 29 SER A 32 0 SSBOND 1 CYS A 1 CYS A 18 1555 1555 2.02 SSBOND 2 CYS A 8 CYS A 23 1555 1555 2.02 SSBOND 3 CYS A 17 CYS A 31 1555 1555 2.02 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