HEADER PLANT PROTEIN 19-OCT-06 2IT8 TITLE SOLUTION STRUCTURE OF A LINEAR ANALOG OF THE CYCLIC SQUASH TRYPSIN TITLE 2 INHIBITOR MCOTI-II COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRYPSIN INHIBITOR 2; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: MCOTI-II, TRYPSIN INHIBITOR II; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 ORGANISM_SCIENTIFIC: MOMORDICA COCHINCHINENSIS; SOURCE 4 ORGANISM_COMMON: SPINY BITTER CUCUMBER; SOURCE 5 ORGANISM_TAXID: 3674 KEYWDS PLANT PROTEIN ANALOG, KNOTTIN, CYSTINE-KNOT, 3-10 HELIX, TRIPLE- KEYWDS 2 STRANDED ANTI-PARALLEL BETA-SHEET, PLANT PROTEIN EXPDTA SOLUTION NMR NUMMDL 30 AUTHOR O.AVRUTINA,L.CHICHE,U.DIEDERICHSEN,A.HEITZ,H.KOLMAR REVDAT 4 20-NOV-24 2IT8 1 REMARK SEQADV SHEET LINK REVDAT 3 02-APR-14 2IT8 1 SOURCE COMPND REVDAT 2 24-FEB-09 2IT8 1 VERSN REVDAT 1 02-OCT-07 2IT8 0 JRNL AUTH A.HEITZ,O.AVRUTINA,D.LE-NGUYEN,U.DIEDERICHSEN,J.F.HERNANDEZ, JRNL AUTH 2 J.GRACY,H.KOLMAR,L.CHICHE JRNL TITL KNOTTIN CYCLIZATION: STRUCTURE AND STABILITY OF CYCLIC AND JRNL TITL 2 LINEAR SQUASH INHIBITORS DO NOT DIFFER SIGNIFICANTLY JRNL REF TO BE PUBLISHED JRNL REFN REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH O.AVRUTINA,H.U.SCHMOLDT,D.GABRIJELCIC-GEIGER,D.LE-NGUYEN, REMARK 1 AUTH 2 C.P.SOMMERHOFF,U.DIEDERICHSEN,H.KOLMAR REMARK 1 TITL TRYPSIN INHIBITION BY MACROCYCLIC AND OPEN-CHAIN VARIANTS OF REMARK 1 TITL 2 THE SQUASH INHIBITOR MCOTI-II REMARK 1 REF BIOL.CHEM. V. 386 1301 2005 REMARK 1 REFN ISSN 1431-6730 REMARK 1 REFERENCE 2 REMARK 1 AUTH O.AVRUTINA,H.U.SCHMOLDT,H.KOLMAR,U.DIEDERICHSEN REMARK 1 TITL FMOC-ASSISTED SYNTHESIS OF A 29-RESIDUE CYSTINE-KNOT TRYPSIN REMARK 1 TITL 2 INHIBITOR CONTAINING A GUANYL AMINO ACID AT THE P1-POSITION REMARK 1 REF EUR.J.ORG.CHEM. V.2004 4931 2004 REMARK 1 REFN ISSN 1434-193X REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : XWINNMR 3.1, AMBER 8 REMARK 3 AUTHORS : BRUKER (XWINNMR), CASE, D.A. ET AL. (AMBER) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2IT8 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 20-OCT-06. REMARK 100 THE DEPOSITION ID IS D_1000039986. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 285; 300 REMARK 210 PH : 3.0; 3.0 REMARK 210 IONIC STRENGTH : NULL; NULL REMARK 210 PRESSURE : 1 ATM; 1 ATM REMARK 210 SAMPLE CONTENTS : 1.2 MM PEPTIDE, 90% H2O, 10% REMARK 210 D2O; 1.2 MM PEPTIDE, D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D NOESY; 2D TOCSY; 2D 1H-13C REMARK 210 HSQC REMARK 210 SPECTROMETER FIELD STRENGTH : 600 MHZ REMARK 210 SPECTROMETER MODEL : AVANCE REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : XWINNMR 3.1, CYANA 2.1 REMARK 210 METHOD USED : TORSION ANGLE DYNAMICS, REMARK 210 SIMULATED ANNEALING, RESTRAINED REMARK 210 MOLECULAR DYNAMICS REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 50 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 30 REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH THE LOWEST REMARK 210 ENERGY 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 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 2 LYS A 5 32.04 -77.36 REMARK 500 7 LYS A 5 35.26 -76.44 REMARK 500 12 LYS A 5 36.64 -77.62 REMARK 500 13 LYS A 5 26.82 -73.30 REMARK 500 14 LYS A 5 25.16 -78.88 REMARK 500 15 LYS A 5 33.43 -76.71 REMARK 500 18 LYS A 5 33.02 -75.32 REMARK 500 19 LYS A 5 28.29 -76.01 REMARK 500 20 LYS A 5 34.57 -76.01 REMARK 500 21 LYS A 5 39.32 -77.43 REMARK 500 23 LYS A 5 31.22 -75.51 REMARK 500 25 LYS A 5 30.25 -82.14 REMARK 500 28 LYS A 5 25.50 -72.22 REMARK 500 29 LYS A 5 33.24 -76.11 REMARK 500 REMARK 500 REMARK: NULL REMARK 700 REMARK 700 SHEET REMARK 700 DETERMINATION METHOD: AUTHOR-DETERMINED REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1HA9 RELATED DB: PDB REMARK 900 THE CYCLIC WILD MCOTI-II REMARK 900 RELATED ID: 1IB9 RELATED DB: PDB REMARK 900 THE CYCLIC WILD MCOTI-II REMARK 900 RELATED ID: 2C4B RELATED DB: PDB REMARK 900 AN ENGINEERED LINEAR HYBRID BETWEEN MCOTI-II AND EETI-II FUSED TO REMARK 900 BARNASE REMARK 900 RELATED ID: 2IT7 RELATED DB: PDB DBREF 2IT8 A 1 29 UNP P82409 ITR2_MOMCO 6 34 SEQADV 2IT8 NH2 A 30 UNP P82409 AMIDATION SEQRES 1 A 30 GLY VAL CYS PRO LYS ILE LEU LYS LYS CYS ARG ARG ASP SEQRES 2 A 30 SER ASP CYS PRO GLY ALA CYS ILE CYS ARG GLY ASN GLY SEQRES 3 A 30 TYR CYS GLY NH2 HET NH2 A 30 3 HETNAM NH2 AMINO GROUP FORMUL 1 NH2 H2 N HELIX 1 1 ARG A 12 CYS A 16 5 5 SHEET 1 B 3 LYS A 8 CYS A 10 0 SHEET 2 B 3 GLY A 26 GLY A 29 -1 N CYS A 28 O LYS A 8 SHEET 3 B 3 ILE A 21 ARG A 23 -1 N ILE A 21 O GLY A 29 SSBOND 1 CYS A 3 CYS A 20 1555 1555 2.03 SSBOND 2 CYS A 10 CYS A 22 1555 1555 2.04 SSBOND 3 CYS A 16 CYS A 28 1555 1555 2.04 LINK C GLY A 29 N NH2 A 30 1555 1555 1.32 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