HEADER PLANT PROTEIN 05-OCT-01 1K48 TITLE REFINED STRUCTURE AND DISULFIDE PAIRING OF THE KALATA B1 TITLE 2 PEPTIDE COMPND MOL_ID: 1; COMPND 2 MOLECULE: KALATA B1; COMPND 3 CHAIN: A SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: OLDENLANDIA AFFINIS; SOURCE 3 ORGANISM_TAXID: 60225; SOURCE 4 STRAIN: DC; SOURCE 5 OTHER_DETAILS: EXTRACTED FROM AFRICAN PLANT KALATA-KALATA KEYWDS CYCLIC PEPTIDE, CYCLOTIDE, DISULFIDE PAIRING, UTEROTONIC, KEYWDS 2 PLANT PROTEIN EXPDTA SOLUTION NMR MDLTYP MINIMIZED AVERAGE AUTHOR L.SKJELDAL,L.GRAN,K.SLETTEN,B.F.VOLKMAN REVDAT 2 24-FEB-09 1K48 1 VERSN REVDAT 1 10-APR-02 1K48 0 JRNL AUTH L.SKJELDAL,L.GRAN,K.SLETTEN,B.F.VOLKMAN JRNL TITL REFINED STRUCTURE AND METAL BINDING SITE OF THE JRNL TITL 2 KALATA B1 PEPTIDE. JRNL REF ARCH.BIOCHEM.BIOPHYS. V. 399 142 2002 JRNL REFN ISSN 0003-9861 JRNL PMID 11888199 JRNL DOI 10.1006/ABBI.2002.2769 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 TITL ELUCIDATION OF THE PRIMARY AND THREE-DIMENSIONAL REMARK 1 TITL 2 STRUCTURE OF THE UTEROTONIC POLYPEPTIDE KALATA B1 REMARK 1 REF BIOCHEMISTRY V. 34 4147 1995 REMARK 1 REFN ISSN 0006-2960 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : DYANA 1.5 REMARK 3 AUTHORS : P. GUENTERT REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: STRUCTURES ARE BASED ON A TOTAL OF REMARK 3 333 DISTANCE CONSTRAINTS. THIS INCLUDES 6 UPPER AND 6 LOWER REMARK 3 LIMITS DEFINING 3 DISULFIDE BONDS, AS WELL AS 3 UPPER AND 3 REMARK 3 LOWER LIMITS DEFINING A PEPTIDE BOND CYCLIZING THE PEPTIDE REMARK 3 BACKBONE. RESIDUE NUMBERING FOLLOWS THE ORIGINAL DESCRIPTION REMARK 3 OF CITATION 1, EXCEPT THAT FOR THE PURPOSES OF STRUCTURE REMARK 3 CALCULATIONS, THE N-TERMINAL RESIDUE WAS TAKEN AS ASN8. REMARK 3 THEREFORE, RESIDUES 30-36 IN THIS DEPOSITION CORRESPOND TO REMARK 3 RESIDUES 1-7 IN CITATION 1 AND RELATED PDB ENTRY 1KAL. REMARK 3 STRUCTURES WERE REFINED IN THE ABSENCE OF ANY ARTIFICIAL REMARK 3 CONSTRAINTS DEFINING DISULFIDE BONDS UNTIL ALL NOES HAD BEEN REMARK 3 ASSIGNED AND LOW TARGET FUNCTIONS WERE ACHIEVED (TF=0.6). 15 REMARK 3 ADDITIONAL CALCULATIONS WERE PERFORMED WITH THESE INPUT DATA REMARK 3 AND THE INCLUSION OF CONSTRAINTS DEFINING ALL POSSIBLE REMARK 3 DISULFIDE PAIRING COMBINATIONS. THE STRUCTURES CONTAINING REMARK 3 DISULFIDES BETWEEN [5(34)-13], [17-29] AND [22-27] DISPLAYED REMARK 3 THE LOWEST TARGET FUNCTION (0.74, SECOND LOWEST WAS 1.54). ON REMARK 3 THE BASIS OF THIS RESULT AND ANALYSIS OF NOES OBSERVED BETWEEN REMARK 3 CYS SIDECHAIN PROTONS, THIS DISULFIDE BONDING ARRANGEMENT WAS REMARK 3 ASSUMED TO BE CORRECT AND SERVED AS THE BASIS FOR THIS REMARK 3 DEPOSITION. REMARK 4 REMARK 4 1K48 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 10-OCT-01. REMARK 100 THE RCSB ID CODE IS RCSB014540. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 298.00 REMARK 210 PH : 3.00 REMARK 210 IONIC STRENGTH : 0 REMARK 210 PRESSURE : AMBIENT REMARK 210 SAMPLE CONTENTS : 5 MM KALATA B1, 10% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D NOESY REMARK 210 SPECTROMETER FIELD STRENGTH : 750 MHZ REMARK 210 SPECTROMETER MODEL : DMX REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : XWINNMR 2.6, XEASY 1.3.11 REMARK 210 METHOD USED : TORSION ANGLE DYNAMICS REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : NULL REMARK 210 CONFORMERS, NUMBER SUBMITTED : 1 REMARK 210 CONFORMERS, SELECTION CRITERIA : NULL REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL REMARK 210 REMARK 210 REMARK: STRUCTURE WAS DETERMINED USING NOES FROM A SINGLE 100 REMARK 210 MS MIXING TIME NOESY EXPERIMENT 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 DISTANCE REMARK 500 N ASN A 8 C ARG A 36 1.38 REMARK 500 REMARK 500 REMARK: NULL 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 17 67.60 -153.79 REMARK 500 ASN A 23 -7.96 82.83 REMARK 500 CYS A 29 114.11 -39.32 REMARK 500 TRP A 31 137.04 62.26 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1KAL RELATED DB: PDB REMARK 900 ELUCIDATION OF THE PRIMARY AND THREE-DIMENSIONAL STRUCTURE REMARK 900 OF THE UTEROTONIC POLYPEPTIDE KALATA B1 REMARK 900 RELATED ID: 1JJZ RELATED DB: PDB REMARK 900 REFINED STRUCTURE AND DISULFIDE PAIRING OF THE KALATA B1 REMARK 900 PEPTIDE DBREF 1K48 A 8 15 UNP P56254 KAB1_OLDAF 22 29 DBREF 1K48 A 16 36 UNP P56254 KAB1_OLDAF 1 21 SEQRES 1 A 29 ASN GLY LEU PRO VAL CYS GLY GLU THR CYS VAL GLY GLY SEQRES 2 A 29 THR CYS ASN THR PRO GLY CYS THR CYS SER TRP PRO VAL SEQRES 3 A 29 CYS THR ARG SSBOND 1 CYS A 13 CYS A 34 1555 1555 1.98 SSBOND 2 CYS A 17 CYS A 29 1555 1555 2.11 SSBOND 3 CYS A 22 CYS A 27 1555 1555 2.06 CISPEP 1 TRP A 31 PRO A 32 0 -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 MASTER 110 0 0 0 0 0 0 6 0 0 0 3 END