HEADER METAL BINDING PROTEIN 06-JAN-26 9ZZ4 TITLE NMR STRUCTURE OF CABP1 BOUND TO THE IQ MOTIF OF CAV1.2 COMPND MOL_ID: 1; COMPND 2 MOLECULE: CALCIUM-BINDING PROTEIN 1; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: CABP1,CALBRAIN,CALDENDRIN; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: VOLTAGE-DEPENDENT L-TYPE CALCIUM CHANNEL SUBUNIT ALPHA-1C; COMPND 8 CHAIN: B; COMPND 9 FRAGMENT: IQ MOTIF (UNP RESIDUES 1587-1609); COMPND 10 SYNONYM: CALCIUM CHANNEL, L TYPE, ALPHA-1 POLYPEPTIDE, ISOFORM 1, COMPND 11 CARDIAC MUSCLE, VOLTAGE-GATED CALCIUM CHANNEL SUBUNIT ALPHA CAV1.2; 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: CABP1; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 MOL_ID: 2; SOURCE 9 SYNTHETIC: YES; SOURCE 10 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 11 ORGANISM_COMMON: HUMAN; SOURCE 12 ORGANISM_TAXID: 9606 KEYWDS METAL BINDING PROTEIN EXPDTA SOLUTION NMR NUMMDL 10 AUTHOR I.SALVESON,D.E.ANDERSON,A.BEJ,J.B.AMES REVDAT 2 27-MAY-26 9ZZ4 1 JRNL REVDAT 1 08-APR-26 9ZZ4 0 JRNL AUTH I.SALVESON,D.E.ANDERSON,A.BEJ,M.NIEVES-CINTRON,M.NAVEDO, JRNL AUTH 2 J.W.HELL,J.B.AMES JRNL TITL STRUCTURAL INSIGHTS INTO L-TYPE VOLTAGE-GATED CA 2+ CHANNEL JRNL TITL 2 (CA V 1.2) ACTIVATION BY CABP1. JRNL REF BIOCHEMISTRY V. 65 1668 2026 JRNL REFN ISSN 0006-2960 JRNL PMID 41859936 JRNL DOI 10.1021/ACS.BIOCHEM.6C00032 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : HADDOCK REMARK 3 AUTHORS : BONVIN REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 9ZZ4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 08-JAN-26. REMARK 100 THE DEPOSITION ID IS D_1000304007. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 300 REMARK 210 PH : 7.5 REMARK 210 IONIC STRENGTH : 10 REMARK 210 PRESSURE : 1 ATM REMARK 210 SAMPLE CONTENTS : 0.5 MM [U-100% 15N] CABP1 C REMARK 210 -LOBE, 0.75 MM CAV1.2 IQ MOTIF, REMARK 210 1 MM CA2+, 10 MM [U-100% 2H] REMARK 210 TRIS, 90% H2O/10% D2O; 0.6 MM [U- REMARK 210 100% 13C; U-100% 15N] CABP1 C- REMARK 210 LOBE, 0.9 MM CAV1.2 IQ MOTIF, 1 REMARK 210 MM CA2+, 10 MM [U-100% 2H] TRIS, REMARK 210 90% H2O/10% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D 1H-15N HSQC; 3D CBCA(CO)NH; REMARK 210 3D HNCACB; 3D HCCH-TOCSY; 3D REMARK 210 HBHA(CO)NH; 3D HNCO; 2D 1H-13C REMARK 210 HSQC ALIPHATIC REMARK 210 SPECTROMETER FIELD STRENGTH : 600 MHZ; 800 MHZ REMARK 210 SPECTROMETER MODEL : AVANCE III REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : NMRFX, NMRFAM-SPARKY, HADDOCK REMARK 210 METHOD USED : SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 400 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 10 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA 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 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 OE2 GLU A 126 HZ3 LYS A 130 1.55 REMARK 500 OE1 GLU B 1656 HH21 ARG B 1659 1.56 REMARK 500 OD1 ASP A 147 HH21 ARG A 163 1.57 REMARK 500 OE1 GLU A 126 HH11 ARG A 129 1.58 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 MET A 72 -64.65 -97.81 REMARK 500 1 LEU A 92 32.97 -81.48 REMARK 500 1 THR A 95 -159.14 -129.04 REMARK 500 1 ASP A 147 -38.32 -131.01 REMARK 500 2 MET A 72 -64.89 -97.64 REMARK 500 2 LEU A 92 34.15 -80.26 REMARK 500 2 THR A 95 -169.31 -101.29 REMARK 500 3 MET A 72 -63.37 -97.99 REMARK 500 3 LEU A 92 38.75 -78.44 REMARK 500 4 MET A 72 -63.01 -97.68 REMARK 500 4 LEU A 92 32.96 -80.60 REMARK 500 5 MET A 72 -63.00 -97.54 REMARK 500 5 LEU A 92 36.68 -80.56 REMARK 500 5 MET A 165 31.68 -95.69 REMARK 500 6 MET A 72 -62.29 -96.99 REMARK 500 6 LEU A 92 33.10 -79.45 REMARK 500 6 MET A 165 49.58 -102.70 REMARK 500 7 ARG A 17 -175.50 -178.21 REMARK 500 7 MET A 72 -64.27 -97.27 REMARK 500 7 LEU A 92 41.69 -79.39 REMARK 500 7 THR A 95 -155.30 -129.62 REMARK 500 8 MET A 72 -63.84 -98.01 REMARK 500 8 LEU A 92 35.60 -80.62 REMARK 500 8 MET A 165 62.40 -103.61 REMARK 500 9 MET A 72 -64.16 -97.69 REMARK 500 9 LEU A 92 46.88 -78.64 REMARK 500 9 MET A 165 45.96 -104.69 REMARK 500 10 MET A 72 -62.29 -97.02 REMARK 500 10 LEU A 92 30.95 -79.68 REMARK 500 10 THR A 95 -168.33 -115.18 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 CA A 501 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 112 OD1 REMARK 620 2 ASN A 114 OD1 85.0 REMARK 620 3 ASP A 116 OD1 82.3 84.9 REMARK 620 4 GLU A 118 O 123.2 143.7 77.8 REMARK 620 5 GLU A 123 OE1 91.9 76.0 160.4 120.4 REMARK 620 6 GLU A 123 OE2 145.3 94.5 132.4 75.1 54.8 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 502 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 149 OD1 REMARK 620 2 ASN A 151 OD1 81.4 REMARK 620 3 ASP A 153 OD1 94.2 79.5 REMARK 620 4 ARG A 155 O 94.8 156.5 77.7 REMARK 620 5 GLU A 160 OE1 101.9 124.8 152.4 78.7 REMARK 620 6 GLU A 160 OE2 66.3 79.9 153.4 120.0 53.8 REMARK 620 N 1 2 3 4 5 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 51518 RELATED DB: BMRB DBREF 9ZZ4 A 16 167 UNP Q9NZU7 CABP1_HUMAN 219 370 DBREF 9ZZ4 B 1646 1668 UNP Q13936 CAC1C_HUMAN 1587 1609 SEQADV 9ZZ4 MET A 15 UNP Q9NZU7 INITIATING METHIONINE SEQRES 1 A 153 MET ASP ARG SER LEU ARG PRO GLU GLU ILE GLU GLU LEU SEQRES 2 A 153 ARG GLU ALA PHE ARG GLU PHE ASP LYS ASP LYS ASP GLY SEQRES 3 A 153 TYR ILE ASN CYS ARG ASP LEU GLY ASN CYS MET ARG THR SEQRES 4 A 153 MET GLY TYR MET PRO THR GLU MET GLU LEU ILE GLU LEU SEQRES 5 A 153 SER GLN GLN ILE ASN MET ASN LEU GLY GLY HIS VAL ASP SEQRES 6 A 153 PHE ASP ASP PHE VAL GLU LEU MET GLY PRO LYS LEU LEU SEQRES 7 A 153 ALA GLU THR ALA ASP MET ILE GLY VAL LYS GLU LEU ARG SEQRES 8 A 153 ASP ALA PHE ARG GLU PHE ASP THR ASN GLY ASP GLY GLU SEQRES 9 A 153 ILE SER THR SER GLU LEU ARG GLU ALA MET ARG LYS LEU SEQRES 10 A 153 LEU GLY HIS GLN VAL GLY HIS ARG ASP ILE GLU GLU ILE SEQRES 11 A 153 ILE ARG ASP VAL ASP LEU ASN GLY ASP GLY ARG VAL ASP SEQRES 12 A 153 PHE GLU GLU PHE VAL ARG MET MET SER ARG SEQRES 1 B 23 GLY LYS PHE TYR ALA THR PHE LEU ILE GLN GLU TYR PHE SEQRES 2 B 23 ARG LYS PHE LYS LYS ARG LYS GLU GLN GLY HET CA A 501 1 HET CA A 502 1 HETNAM CA CALCIUM ION FORMUL 3 CA 2(CA 2+) HELIX 1 AA1 ARG A 20 ASP A 35 1 16 HELIX 2 AA2 ASN A 43 MET A 51 1 9 HELIX 3 AA3 THR A 59 MET A 72 1 14 HELIX 4 AA4 ASP A 79 LEU A 92 1 14 HELIX 5 AA5 THR A 95 GLY A 100 1 6 HELIX 6 AA6 GLY A 100 ASP A 112 1 13 HELIX 7 AA7 SER A 120 GLY A 133 1 14 HELIX 8 AA8 GLY A 137 ASP A 149 1 13 HELIX 9 AA9 ASP A 157 MET A 165 1 9 HELIX 10 AB1 LYS B 1647 GLN B 1667 1 21 LINK OD1 ASP A 112 CA CA A 501 1555 1555 2.17 LINK OD1 ASN A 114 CA CA A 501 1555 1555 2.26 LINK OD1 ASP A 116 CA CA A 501 1555 1555 2.21 LINK O GLU A 118 CA CA A 501 1555 1555 2.25 LINK OE1 GLU A 123 CA CA A 501 1555 1555 2.31 LINK OE2 GLU A 123 CA CA A 501 1555 1555 2.41 LINK OD1 ASP A 149 CA CA A 502 1555 1555 2.32 LINK OD1 ASN A 151 CA CA A 502 1555 1555 2.37 LINK OD1 ASP A 153 CA CA A 502 1555 1555 2.22 LINK O ARG A 155 CA CA A 502 1555 1555 2.36 LINK OE1 GLU A 160 CA CA A 502 1555 1555 2.35 LINK OE2 GLU A 160 CA CA A 502 1555 1555 2.44 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 CONECT 1557 2851 CONECT 1583 2851 CONECT 1604 2851 CONECT 1620 2851 CONECT 1694 2851 CONECT 1695 2851 CONECT 2133 2852 CONECT 2164 2852 CONECT 2185 2852 CONECT 2201 2852 CONECT 2292 2852 CONECT 2293 2852 CONECT 2851 1557 1583 1604 1620 CONECT 2851 1694 1695 CONECT 2852 2133 2164 2185 2201 CONECT 2852 2292 2293 MASTER 165 0 2 10 0 0 0 6 1448 2 16 14 END