HEADER PLANT PROTEIN 28-JUL-21 7RMQ TITLE CRYSTAL STRUCTURE OF CYCLOVIOLACIN O2 COMPND MOL_ID: 1; COMPND 2 MOLECULE: CYCLOVIOLACIN O2; COMPND 3 CHAIN: A; COMPND 4 MOL_ID: 2; COMPND 5 MOLECULE: D-[I11L]CYCLOVIOLACIN O2; COMPND 6 CHAIN: B; COMPND 7 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: VIOLA ODORATA; SOURCE 3 ORGANISM_COMMON: SWEET VIOLET; SOURCE 4 ORGANISM_TAXID: 97441; SOURCE 5 MOL_ID: 2; SOURCE 6 SYNTHETIC: YES; SOURCE 7 ORGANISM_SCIENTIFIC: VIOLA ODORATA; SOURCE 8 ORGANISM_COMMON: SWEET VIOLET; SOURCE 9 ORGANISM_TAXID: 97441 KEYWDS CYCLIC PEPTIDES, CYCLOTIDES, QUASI-RACEMIC, PLANT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR Y.H.HUANG,Q.DU REVDAT 5 15-NOV-23 7RMQ 1 REMARK REVDAT 4 18-OCT-23 7RMQ 1 REMARK REVDAT 3 13-OCT-21 7RMQ 1 JRNL REVDAT 2 29-SEP-21 7RMQ 1 JRNL REVDAT 1 22-SEP-21 7RMQ 0 JRNL AUTH Y.H.HUANG,Q.DU,Z.JIANG,G.J.KING,B.M.COLLINS,C.K.WANG, JRNL AUTH 2 D.J.CRAIK JRNL TITL ENABLING EFFICIENT FOLDING AND HIGH-RESOLUTION JRNL TITL 2 CRYSTALLOGRAPHIC ANALYSIS OF BRACELET CYCLOTIDES. JRNL REF MOLECULES V. 26 2021 JRNL REFN ESSN 1420-3049 JRNL PMID 34577034 JRNL DOI 10.3390/MOLECULES26185554 REMARK 2 REMARK 2 RESOLUTION. 1.17 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (1.18.2_3874) 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) : 1.17 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 27.35 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.390 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.8 REMARK 3 NUMBER OF REFLECTIONS : 12669 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.214 REMARK 3 R VALUE (WORKING SET) : 0.212 REMARK 3 FREE R VALUE : 0.232 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1267 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 27.3500 - 2.4300 1.00 1319 156 0.2070 0.2196 REMARK 3 2 2.4300 - 1.9300 1.00 1291 140 0.2073 0.2131 REMARK 3 3 1.9300 - 1.6900 1.00 1276 145 0.1994 0.2381 REMARK 3 4 1.6900 - 1.5300 0.99 1278 143 0.2088 0.2271 REMARK 3 5 1.5300 - 1.4200 0.99 1265 137 0.2121 0.2539 REMARK 3 6 1.4200 - 1.3400 0.99 1251 137 0.2292 0.2480 REMARK 3 7 1.3400 - 1.2700 0.98 1261 140 0.2189 0.2495 REMARK 3 8 1.2700 - 1.2200 0.98 1224 143 0.2376 0.2540 REMARK 3 9 1.2200 - 1.1700 0.97 1237 126 0.2280 0.2678 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) : 0.110 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 28.230 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 : 0.009 442 REMARK 3 ANGLE : 1.404 592 REMARK 3 CHIRALITY : 0.097 66 REMARK 3 PLANARITY : 0.009 72 REMARK 3 DIHEDRAL : 9.516 158 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL 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 7RMQ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 28-JUL-21. REMARK 100 THE DEPOSITION ID IS D_1000258382. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 16-JUL-20 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : AUSTRALIAN SYNCHROTRON REMARK 200 BEAMLINE : MX1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9537 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS EIGER X 16M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : AIMLESS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 12686 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.170 REMARK 200 RESOLUTION RANGE LOW (A) : 27.350 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.8 REMARK 200 DATA REDUNDANCY : 2.000 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 7.7300 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.17 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.21 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 FOR SHELL : NULL 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: 2KNM REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 17.74 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.50 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.2 M MAGNESIUM FORMATE DIHYDRATE, 20% REMARK 280 (W/V) PEG3350, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K 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 12.36750 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 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B 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 THE AUTHORS STATE THAT CHAIN B IS INDEED D-PEPTIDE AND IS ALL-D REMARK 400 AMINO ACIDS. 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 CYS A 7 46.05 -141.09 REMARK 500 PRO A 11 175.16 -59.81 REMARK 500 SER A 14 4.61 -64.96 REMARK 500 LYS A 24 -4.19 80.79 REMARK 500 DCY B 7 -44.64 146.39 REMARK 500 DSN B 14 -3.11 66.78 REMARK 500 DLY B 24 1.77 -78.60 REMARK 500 REMARK 500 REMARK: NULL DBREF 7RMQ A 1 29 UNP P58434 CYO2_VIOOD 2 30 DBREF 7RMQ A 30 30 UNP P58434 CYO2_VIOOD 1 1 DBREF 7RMQ B 1 29 UNP P58434 CYO2_VIOOD 2 30 DBREF 7RMQ B 30 30 UNP P58434 CYO2_VIOOD 1 1 SEQADV 7RMQ DIL B 1 UNP P58434 ILE 2 CONFLICT SEQADV 7RMQ DPR B 2 UNP P58434 PRO 3 CONFLICT SEQADV 7RMQ DCY B 3 UNP P58434 CYS 4 CONFLICT SEQADV 7RMQ DGL B 5 UNP P58434 GLU 6 CONFLICT SEQADV 7RMQ DSN B 6 UNP P58434 SER 7 CONFLICT SEQADV 7RMQ DCY B 7 UNP P58434 CYS 8 CONFLICT SEQADV 7RMQ DVA B 8 UNP P58434 VAL 9 CONFLICT SEQADV 7RMQ DTR B 9 UNP P58434 TRP 10 CONFLICT SEQADV 7RMQ DLE B 10 UNP P58434 ILE 11 CONFLICT SEQADV 7RMQ DPR B 11 UNP P58434 PRO 12 CONFLICT SEQADV 7RMQ DCY B 12 UNP P58434 CYS 13 CONFLICT SEQADV 7RMQ DIL B 13 UNP P58434 ILE 14 CONFLICT SEQADV 7RMQ DSN B 14 UNP P58434 SER 15 CONFLICT SEQADV 7RMQ DSN B 15 UNP P58434 SER 16 CONFLICT SEQADV 7RMQ DAL B 16 UNP P58434 ALA 17 CONFLICT SEQADV 7RMQ DIL B 17 UNP P58434 ILE 18 CONFLICT SEQADV 7RMQ DCY B 19 UNP P58434 CYS 20 CONFLICT SEQADV 7RMQ DSN B 20 UNP P58434 SER 21 CONFLICT SEQADV 7RMQ DCY B 21 UNP P58434 CYS 22 CONFLICT SEQADV 7RMQ DLY B 22 UNP P58434 LYS 23 CONFLICT SEQADV 7RMQ DSN B 23 UNP P58434 SER 24 CONFLICT SEQADV 7RMQ DLY B 24 UNP P58434 LYS 25 CONFLICT SEQADV 7RMQ DVA B 25 UNP P58434 VAL 26 CONFLICT SEQADV 7RMQ DCY B 26 UNP P58434 CYS 27 CONFLICT SEQADV 7RMQ DTY B 27 UNP P58434 TYR 28 CONFLICT SEQADV 7RMQ DAR B 28 UNP P58434 ARG 29 CONFLICT SEQADV 7RMQ DSG B 29 UNP P58434 ASN 30 CONFLICT SEQRES 1 A 30 ILE PRO CYS GLY GLU SER CYS VAL TRP ILE PRO CYS ILE SEQRES 2 A 30 SER SER ALA ILE GLY CYS SER CYS LYS SER LYS VAL CYS SEQRES 3 A 30 TYR ARG ASN GLY SEQRES 1 B 30 DIL DPR DCY GLY DGL DSN DCY DVA DTR DLE DPR DCY DIL SEQRES 2 B 30 DSN DSN DAL DIL GLY DCY DSN DCY DLY DSN DLY DVA DCY SEQRES 3 B 30 DTY DAR DSG GLY HET DIL B 1 19 HET DPR B 2 14 HET DCY B 3 10 HET DGL B 5 15 HET DSN B 6 11 HET DCY B 7 10 HET DVA B 8 16 HET DTR B 9 16 HET DLE B 10 19 HET DPR B 11 14 HET DCY B 12 10 HET DIL B 13 19 HET DSN B 14 11 HET DSN B 15 11 HET DAL B 16 10 HET DIL B 17 19 HET DCY B 19 10 HET DSN B 20 11 HET DCY B 21 10 HET DLY B 22 11 HET DSN B 23 8 HET DLY B 24 22 HET DVA B 25 16 HET DCY B 26 10 HET DTY B 27 21 HET DAR B 28 11 HET DSG B 29 10 HET FMT A 101 5 HET FMT B 201 5 HETNAM DIL D-ISOLEUCINE HETNAM DPR D-PROLINE HETNAM DCY D-CYSTEINE HETNAM DGL D-GLUTAMIC ACID HETNAM DSN D-SERINE HETNAM DVA D-VALINE HETNAM DTR D-TRYPTOPHAN HETNAM DLE D-LEUCINE HETNAM DAL D-ALANINE HETNAM DLY D-LYSINE HETNAM DTY D-TYROSINE HETNAM DAR D-ARGININE HETNAM DSG D-ASPARAGINE HETNAM FMT FORMIC ACID FORMUL 2 DIL 3(C6 H13 N O2) FORMUL 2 DPR 2(C5 H9 N O2) FORMUL 2 DCY 6(C3 H7 N O2 S) FORMUL 2 DGL C5 H9 N O4 FORMUL 2 DSN 5(C3 H7 N O3) FORMUL 2 DVA 2(C5 H11 N O2) FORMUL 2 DTR C11 H12 N2 O2 FORMUL 2 DLE C6 H13 N O2 FORMUL 2 DAL C3 H7 N O2 FORMUL 2 DLY 2(C6 H14 N2 O2) FORMUL 2 DTY C9 H11 N O3 FORMUL 2 DAR C6 H15 N4 O2 1+ FORMUL 2 DSG C4 H8 N2 O3 FORMUL 3 FMT 2(C H2 O2) FORMUL 5 HOH *34(H2 O) HELIX 1 AA1 CYS A 12 GLY A 18 5 7 HELIX 2 AA2 DCY B 12 GLY B 18 5 7 SHEET 1 AA1 3 PRO A 2 SER A 6 0 SHEET 2 AA1 3 VAL A 25 TYR A 27 -1 O CYS A 26 N GLU A 5 SHEET 3 AA1 3 SER A 20 LYS A 22 -1 N LYS A 22 O VAL A 25 SHEET 1 AA2 3 DPR B 2 DSN B 6 0 SHEET 2 AA2 3 DVA B 25 DTY B 27 -1 O DCY B 26 N DGL B 5 SHEET 3 AA2 3 DSN B 20 DLY B 22 -1 N DLY B 22 O DVA B 25 SSBOND 1 CYS A 3 CYS A 19 1555 1555 2.02 SSBOND 2 CYS A 7 CYS A 21 1555 1555 2.02 SSBOND 3 CYS A 12 CYS A 26 1555 1555 2.03 SSBOND 4 DCY B 3 DCY B 19 1555 1555 2.01 SSBOND 5 DCY B 7 DCY B 21 1555 1555 2.04 SSBOND 6 DCY B 12 DCY B 26 1555 1555 2.04 LINK N ILE A 1 C GLY A 30 1555 1555 1.33 LINK C DIL B 1 N DPR B 2 1555 1555 1.34 LINK N DIL B 1 C GLY B 30 1555 1555 1.34 LINK C DPR B 2 N DCY B 3 1555 1555 1.33 LINK C DCY B 3 N GLY B 4 1555 1555 1.32 LINK C GLY B 4 N DGL B 5 1555 1555 1.33 LINK C DGL B 5 N DSN B 6 1555 1555 1.33 LINK C DSN B 6 N DCY B 7 1555 1555 1.32 LINK C DCY B 7 N DVA B 8 1555 1555 1.33 LINK C DVA B 8 N DTR B 9 1555 1555 1.34 LINK C DTR B 9 N DLE B 10 1555 1555 1.33 LINK C DLE B 10 N DPR B 11 1555 1555 1.34 LINK C DPR B 11 N DCY B 12 1555 1555 1.33 LINK C DCY B 12 N DIL B 13 1555 1555 1.32 LINK C DIL B 13 N DSN B 14 1555 1555 1.33 LINK C DSN B 14 N DSN B 15 1555 1555 1.34 LINK C DSN B 15 N DAL B 16 1555 1555 1.32 LINK C DAL B 16 N DIL B 17 1555 1555 1.33 LINK C DIL B 17 N GLY B 18 1555 1555 1.33 LINK C GLY B 18 N DCY B 19 1555 1555 1.33 LINK C DCY B 19 N DSN B 20 1555 1555 1.31 LINK C DSN B 20 N DCY B 21 1555 1555 1.32 LINK C DCY B 21 N DLY B 22 1555 1555 1.33 LINK C DLY B 22 N DSN B 23 1555 1555 1.33 LINK C DSN B 23 N DLY B 24 1555 1555 1.33 LINK C DLY B 24 N DVA B 25 1555 1555 1.33 LINK C DVA B 25 N DCY B 26 1555 1555 1.33 LINK C DCY B 26 N DTY B 27 1555 1555 1.33 LINK C DTY B 27 N DAR B 28 1555 1555 1.32 LINK C DAR B 28 N DSG B 29 1555 1555 1.34 LINK C DSG B 29 N GLY B 30 1555 1555 1.33 CRYST1 27.998 24.735 29.913 90.00 113.89 90.00 P 1 21 1 2 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 0.035717 0.000000 0.015821 0.00000 SCALE2 0.000000 0.040429 0.000000 0.00000 SCALE3 0.000000 0.000000 0.036563 0.00000