HEADER DE NOVO PROTEIN 19-APR-26 12UI TITLE NMR STRUCTURE OF K7 PEPTIDE IN 98% H2SO4 COMPND MOL_ID: 1; COMPND 2 MOLECULE: K7 PEPTIDE; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 4 ORGANISM_TAXID: 32630 KEYWDS PROTEIN FOLDING, CONCENTRATED SULFURIC ACID, EXOPLANET, VENUS CLOUD, KEYWDS 2 DE NOVO PROTEIN EXPDTA SOLUTION NMR NUMMDL 20 AUTHOR J.Y.ZHANG,M.HONG REVDAT 1 16-SEP-26 12UI 0 JRNL AUTH J.Y.ZHANG,A.J.DREGNI,J.J.PETKOWSKI,S.SEAGER,M.HONG JRNL TITL PEPTIDES ADOPT STABLE OMEGA-LOOP STRUCTURES IN CONCENTRATED JRNL TITL 2 SULFURIC ACID. JRNL REF PROC.NATL.ACAD.SCI.USA V. 123 39123 2026 JRNL REFN ESSN 1091-6490 JRNL PMID 42696554 JRNL DOI 10.1073/PNAS.2618039123 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR NIH REMARK 3 AUTHORS : SCHWIETERS, KUSZEWSKI, TJANDRA AND CLORE REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 12UI COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 20-APR-26. REMARK 100 THE DEPOSITION ID IS D_1000307299. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 293 REMARK 210 PH : 0 REMARK 210 IONIC STRENGTH : 18.4 REMARK 210 PRESSURE : 1 ATM REMARK 210 SAMPLE CONTENTS : 10.5 MG/ML K7 PEPTIDE, 98 % W/W REMARK 210 H2SO4, 1 MG/ML DIMETHYL SULFONE, REMARK 210 98% H2SO4/2% H2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D 1H-1H NOESY; 2D 1H-13C HMQC; REMARK 210 2D 1H-15N HSQC; 3D HNHA REMARK 210 SPECTROMETER FIELD STRENGTH : 800 MHZ REMARK 210 SPECTROMETER MODEL : AVANCE III REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : CCPNMR ANALYSIS REMARK 210 METHOD USED : NA REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 1000 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 20 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA 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 2 54.79 -169.82 REMARK 500 1 LEU A 3 39.12 29.96 REMARK 500 1 LEU A 4 41.69 35.25 REMARK 500 1 ALA A 6 87.58 -61.87 REMARK 500 2 LYS A 2 54.68 -169.76 REMARK 500 2 LEU A 3 38.93 29.93 REMARK 500 2 LEU A 4 41.59 35.98 REMARK 500 2 ALA A 6 86.82 -63.73 REMARK 500 3 LYS A 2 54.14 30.23 REMARK 500 3 LEU A 3 40.48 29.40 REMARK 500 3 LEU A 4 41.54 34.84 REMARK 500 3 ALA A 6 92.14 -62.17 REMARK 500 4 LYS A 2 54.00 30.14 REMARK 500 4 LEU A 3 40.45 29.38 REMARK 500 4 LEU A 4 41.62 35.00 REMARK 500 4 ALA A 6 92.18 -62.16 REMARK 500 5 LYS A 2 54.09 30.15 REMARK 500 5 LEU A 3 40.48 29.46 REMARK 500 5 LEU A 4 41.52 34.91 REMARK 500 5 ALA A 6 92.03 -62.19 REMARK 500 6 LYS A 2 54.13 30.36 REMARK 500 6 LEU A 3 38.99 30.21 REMARK 500 6 LEU A 4 42.03 36.62 REMARK 500 6 ALA A 6 89.20 -62.69 REMARK 500 7 LYS A 2 54.30 32.20 REMARK 500 7 LEU A 3 39.11 31.05 REMARK 500 7 LEU A 4 43.19 35.93 REMARK 500 7 ALA A 6 86.35 -64.39 REMARK 500 8 LYS A 2 49.65 28.37 REMARK 500 8 LEU A 3 37.96 30.05 REMARK 500 8 LEU A 4 41.66 37.59 REMARK 500 8 LYS A 5 -176.64 -170.81 REMARK 500 8 ALA A 6 95.01 -62.26 REMARK 500 9 LYS A 2 52.92 28.88 REMARK 500 9 LEU A 3 52.67 27.67 REMARK 500 9 LEU A 4 73.03 39.61 REMARK 500 9 LYS A 5 -67.38 99.82 REMARK 500 9 ALA A 6 83.40 -62.99 REMARK 500 10 LYS A 2 52.96 28.92 REMARK 500 10 LEU A 3 52.58 27.61 REMARK 500 10 LEU A 4 72.97 39.87 REMARK 500 10 LYS A 5 -67.51 99.84 REMARK 500 10 ALA A 6 83.61 -62.99 REMARK 500 11 LYS A 2 52.92 28.95 REMARK 500 11 LEU A 3 52.66 27.68 REMARK 500 11 LEU A 4 72.87 39.79 REMARK 500 11 LYS A 5 -67.38 99.82 REMARK 500 11 ALA A 6 83.59 -63.05 REMARK 500 12 LYS A 2 59.76 89.00 REMARK 500 12 LEU A 3 36.56 34.31 REMARK 500 REMARK 500 THIS ENTRY HAS 92 RAMACHANDRAN OUTLIERS. REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 12UF RELATED DB: PDB REMARK 900 SAME PRIMARY CITATION REMARK 900 RELATED ID: 12UG RELATED DB: PDB REMARK 900 SAME PRIMARY CITATION REMARK 900 RELATED ID: 31304 RELATED DB: BMRB REMARK 900 K7 PEPTIDE STRUCTURE IN 98% H2SO4 DBREF 12UI A 1 7 PDB 12UI 12UI 1 7 SEQRES 1 A 7 ALA LYS LEU LEU LYS ALA VAL 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 ENDMDL MODEL 2 ENDMDL MODEL 3 ENDMDL MODEL 4 ENDMDL MODEL 5 ENDMDL MODEL 6 ENDMDL MODEL 7 ENDMDL MODEL 8 ENDMDL MODEL 9 ENDMDL MODEL 10 ENDMDL MODEL 11 ENDMDL MODEL 12 ENDMDL MODEL 13 ENDMDL MODEL 14 ENDMDL MODEL 15 ENDMDL MODEL 16 ENDMDL MODEL 17 ENDMDL MODEL 18 ENDMDL MODEL 19 ENDMDL MODEL 20 ENDMDL MASTER 146 0 0 0 0 0 0 6 52 1 0 1 END