HEADER METAL BINDING PROTEIN 11-FEB-14 2MKP TITLE N DOMAIN OF CARDIAC TROPONIN C BOUND TO THE SWITCH FRAGMENT OF FAST TITLE 2 SKELETAL TROPONIN I AT PH 6 CAVEAT 2MKP CHIRALITY ERROR AT CA ATOM OF GLY C42. COMPND MOL_ID: 1; COMPND 2 MOLECULE: TROPONIN C, SLOW SKELETAL AND CARDIAC MUSCLES; COMPND 3 CHAIN: C; COMPND 4 FRAGMENT: UNP RESIDUES 1-89; COMPND 5 SYNONYM: TN-C; COMPND 6 ENGINEERED: YES; COMPND 7 MOL_ID: 2; COMPND 8 MOLECULE: TROPONIN I, FAST SKELETAL MUSCLE; COMPND 9 CHAIN: I; COMPND 10 FRAGMENT: UNP RESIDUES 116-132; COMPND 11 SYNONYM: TROPONIN I, FAST-TWITCH ISOFORM; COMPND 12 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: TNNC1, TNNC; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_VECTOR: PET-3A; SOURCE 9 MOL_ID: 2; SOURCE 10 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 11 ORGANISM_COMMON: HUMAN; SOURCE 12 ORGANISM_TAXID: 9606; SOURCE 13 GENE: TNNI2; SOURCE 14 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 15 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS TROPONIN C, TROPONIN I, EF-HAND, CALCIUM BINDING, ISCHEMIA, METAL KEYWDS 2 BINDING PROTEIN EXPDTA SOLUTION NMR NUMMDL 10 AUTHOR I.M.ROBERTSON,S.E.PINEDA-SANABRIA,P.C.HOLMES,B.D.SYKES REVDAT 2 18-JUN-14 2MKP 1 JRNL REVDAT 1 26-FEB-14 2MKP 0 JRNL AUTH I.M.ROBERTSON,S.E.PINEDA-SANABRIA,P.C.HOLMES,B.D.SYKES JRNL TITL CONFORMATION OF THE CRITICAL PH SENSITIVE REGION OF TROPONIN JRNL TITL 2 DEPENDS UPON A SINGLE RESIDUE IN TROPONIN I. JRNL REF ARCH.BIOCHEM.BIOPHYS. V.-553 40 2014 JRNL REFN ISSN 0003-9861 JRNL PMID 24333682 JRNL DOI 10.1016/J.ABB.2013.12.003 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PSVS, X-PLOR_NIH REMARK 3 AUTHORS : BHATTACHARYA AND MONTELIONE (PSVS), SCHWIETERS, REMARK 3 KUSZEWSKI, TJANDRA AND CLORE (X-PLOR_NIH) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: SEMI-RIGID SIMULATED ANNEALING. STNI REMARK 3 WAS DOCKED ONTO CNTNC. CNTNC BACKBONE WAS KEPT RIGID AND SIDE REMARK 3 CHAIN'S WERE ALLOWED TO ROTATE. REMARK 4 REMARK 4 2MKP COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-FEB-14. REMARK 100 THE RCSB ID CODE IS RCSB103730. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 303 REMARK 210 PH : 6.00 REMARK 210 IONIC STRENGTH : 0.12 REMARK 210 PRESSURE : AMBIENT REMARK 210 SAMPLE CONTENTS : 0.2-0.3 MM [U-95% 13C; U-95% REMARK 210 15N] CNTNC, 2-2.5 MM STNI(115- REMARK 210 131), 0.25 MM DSS, 100 MM REMARK 210 POTASSIUM CHLORIDE, 10 MM REMARK 210 IMIDAZOLE, 10 MM CALCIUM, 95% REMARK 210 H2O/5% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D 1H-15N HSQC; 2D 1H-13C HSQC; REMARK 210 3D CBCA(CO)NH; 3D C(CO)NH; 3D REMARK 210 HNCACB; 3D H(CCO)NH; 3D 1H-15N REMARK 210 NOESY; 3D 1H-13C NOESY ALIPHATIC; REMARK 210 2D 1H-1H NOESY; 2D 1H-1H TOCSY REMARK 210 SPECTROMETER FIELD STRENGTH : 600 MHZ; 500 MHZ REMARK 210 SPECTROMETER MODEL : UNITY; INOVA REMARK 210 SPECTROMETER MANUFACTURER : VARIAN REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : VNMRJ, PSVS, NMRDRAW, NMRPIPE, REMARK 210 NMRVIEW, X-PLOR_NIH 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 : STRUCTURES WITH THE LEAST REMARK 210 RESTRAINT VIOLATIONS 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: DIMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: C, I 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: 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 O ALA C 23 H PHE C 27 1.55 REMARK 500 O GLU C 56 H GLU C 59 1.55 REMARK 500 O GLN C 58 H ASP C 62 1.56 REMARK 500 OD1 ASP C 67 H SER C 69 1.57 REMARK 500 O PHE C 24 HG12 VAL C 28 1.57 REMARK 500 O PHE C 24 CG1 VAL C 28 2.00 REMARK 500 O LEU I 122 O LEU I 126 2.17 REMARK 500 OD1 ASP C 65 OD1 ASP C 67 2.18 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 1 GLN C 11 44.83 -93.39 REMARK 500 1 LEU C 29 93.59 -68.55 REMARK 500 1 CYS C 35 -167.88 -128.32 REMARK 500 1 SER C 37 42.51 -154.08 REMARK 500 1 THR C 38 -57.42 70.79 REMARK 500 1 ARG C 46 -36.85 -39.00 REMARK 500 1 ASN C 51 81.16 -175.96 REMARK 500 1 VAL C 64 53.44 -147.77 REMARK 500 1 CYS C 84 40.95 -109.38 REMARK 500 1 MET C 85 -76.54 -57.90 REMARK 500 1 ASP C 88 36.39 -152.86 REMARK 500 1 MET I 116 130.32 58.36 REMARK 500 1 ALA I 124 -84.77 -80.47 REMARK 500 2 GLN C 11 45.43 -93.89 REMARK 500 2 LEU C 29 95.18 -65.82 REMARK 500 2 CYS C 35 -168.32 -129.25 REMARK 500 2 SER C 37 40.78 -157.27 REMARK 500 2 THR C 38 -55.05 70.65 REMARK 500 2 ARG C 46 -36.64 -39.21 REMARK 500 2 ASN C 51 81.94 -175.70 REMARK 500 2 VAL C 64 51.82 -145.64 REMARK 500 2 CYS C 84 41.05 -109.49 REMARK 500 2 MET C 85 -75.76 -56.96 REMARK 500 2 ASP C 88 35.63 -154.73 REMARK 500 2 ALA I 124 -84.20 -77.00 REMARK 500 2 LEU I 125 -50.00 -29.81 REMARK 500 2 SER I 128 -67.83 55.09 REMARK 500 2 HIS I 130 -136.83 -165.38 REMARK 500 3 GLN C 11 45.10 -95.06 REMARK 500 3 PHE C 24 -38.51 -38.49 REMARK 500 3 LEU C 29 94.51 -65.74 REMARK 500 3 CYS C 35 -168.17 -128.70 REMARK 500 3 SER C 37 42.25 -157.24 REMARK 500 3 THR C 38 -55.14 69.88 REMARK 500 3 ARG C 46 -37.33 -39.16 REMARK 500 3 ASN C 51 80.42 -178.10 REMARK 500 3 VAL C 64 50.95 -146.24 REMARK 500 3 MET C 85 -75.21 -59.05 REMARK 500 3 ASP C 88 34.49 -154.63 REMARK 500 3 ALA I 124 -74.85 -83.23 REMARK 500 4 GLN C 11 43.17 -94.39 REMARK 500 4 PHE C 24 -38.42 -38.30 REMARK 500 4 LEU C 29 95.38 -66.88 REMARK 500 4 CYS C 35 -168.35 -129.78 REMARK 500 4 SER C 37 40.53 -159.68 REMARK 500 4 THR C 38 -57.00 70.75 REMARK 500 4 ARG C 46 -38.31 -38.42 REMARK 500 4 ASN C 51 81.88 -176.40 REMARK 500 4 VAL C 64 58.99 -146.91 REMARK 500 4 MET C 80 -18.10 -49.66 REMARK 500 REMARK 500 THIS ENTRY HAS 131 RAMACHANDRAN OUTLIERS. REMARK 500 REMARK 500 REMARK: NULL REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 1 CA C 101 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR C 71 O REMARK 620 2 GLU C 76 OE2 109.3 REMARK 620 3 ASP C 67 OD1 144.8 78.1 REMARK 620 4 ASP C 67 OD2 103.3 57.9 50.3 REMARK 620 5 GLU C 76 OE1 71.6 50.1 127.7 97.7 REMARK 620 6 SER C 69 OG 71.8 124.0 75.8 67.3 135.4 REMARK 620 7 ASP C 65 OD2 121.5 119.0 78.8 129.1 117.4 103.2 REMARK 620 8 ASP C 65 OD1 164.6 81.3 46.5 91.7 110.1 112.0 43.6 REMARK 620 N 1 2 3 4 5 6 7 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA C 101 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 19789 RELATED DB: BMRB DBREF 2MKP C 1 89 UNP P63316 TNNC1_HUMAN 1 89 DBREF 2MKP I 115 131 UNP P48788 TNNI2_HUMAN 116 132 SEQRES 1 C 89 MET ASP ASP ILE TYR LYS ALA ALA VAL GLU GLN LEU THR SEQRES 2 C 89 GLU GLU GLN LYS ASN GLU PHE LYS ALA ALA PHE ASP ILE SEQRES 3 C 89 PHE VAL LEU GLY ALA GLU ASP GLY CYS ILE SER THR LYS SEQRES 4 C 89 GLU LEU GLY LYS VAL MET ARG MET LEU GLY GLN ASN PRO SEQRES 5 C 89 THR PRO GLU GLU LEU GLN GLU MET ILE ASP GLU VAL ASP SEQRES 6 C 89 GLU ASP GLY SER GLY THR VAL ASP PHE ASP GLU PHE LEU SEQRES 7 C 89 VAL MET MET VAL ARG CYS MET LYS ASP ASP SER SEQRES 1 I 17 ARG MET SER ALA ASP ALA MET LEU LYS ALA LEU LEU GLY SEQRES 2 I 17 SER LYS HIS LYS HET CA C 101 1 HETNAM CA CALCIUM ION FORMUL 3 CA CA 2+ HELIX 1 1 TYR C 5 GLN C 11 1 7 HELIX 2 2 THR C 13 PHE C 27 1 15 HELIX 3 3 GLU C 40 GLY C 49 1 10 HELIX 4 4 THR C 53 GLU C 63 1 11 HELIX 5 5 ASP C 75 ARG C 83 1 9 HELIX 6 6 SER I 117 ALA I 124 1 8 LINK O THR C 71 CA CA C 101 1555 1555 2.44 LINK OE2 GLU C 76 CA CA C 101 1555 1555 2.48 LINK OD1 ASP C 67 CA CA C 101 1555 1555 2.53 LINK OD2 ASP C 67 CA CA C 101 1555 1555 2.54 LINK OE1 GLU C 76 CA CA C 101 1555 1555 2.60 LINK OG SER C 69 CA CA C 101 1555 1555 2.71 LINK OD2 ASP C 65 CA CA C 101 1555 1555 2.89 LINK OD1 ASP C 65 CA CA C 101 1555 1555 2.91 SITE 1 AC1 6 ASP C 65 ASP C 67 SER C 69 GLY C 70 SITE 2 AC1 6 THR C 71 GLU C 76 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