HEADER TRANSPORT PROTEIN 22-FEB-23 8GA5 TITLE CLC-EC1 L25C/A450C/C85A AT PH 4.5 100MM CL INTERMEDIATE COMPND MOL_ID: 1; COMPND 2 MOLECULE: H(+)/CL(-) EXCHANGE TRANSPORTER CLCA; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 GENE: YADQ; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS CLC-EC1, ECCLC, ERIC, CLC TRANSPORTER, CHLORIDE PROTON ANTIPORTER, KEYWDS 2 TRANSPORT PROTEIN EXPDTA ELECTRON MICROSCOPY AUTHOR E.FORTEA,S.LEE,Y.ARGYOS,R.CHADDA,D.CIFTCI,G.HUYSMANS,J.L.ROBERTSON, AUTHOR 2 O.BOUDKER,A.ACCARDI REVDAT 2 01-MAY-24 8GA5 1 JRNL REVDAT 1 07-FEB-24 8GA5 0 JRNL AUTH E.FORTEA,S.LEE,R.CHADDA,Y.ARGYROS,P.SANDAL, JRNL AUTH 2 R.MAHONEY-KRUSZKA,H.D.CIFTCI,M.E.FALZONE,G.HUYSMANS, JRNL AUTH 3 J.L.ROBERTSON,O.BOUDKER,A.ACCARDI JRNL TITL STRUCTURAL BASIS OF PH-DEPENDENT ACTIVATION IN A CLC JRNL TITL 2 TRANSPORTER. JRNL REF NAT.STRUCT.MOL.BIOL. V. 31 644 2024 JRNL REFN ESSN 1545-9985 JRNL PMID 38279055 JRNL DOI 10.1038/S41594-023-01210-5 REMARK 2 REMARK 2 RESOLUTION. 2.60 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : NULL REMARK 3 REFINEMENT SPACE : NULL REMARK 3 REFINEMENT PROTOCOL : NULL REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : NULL REMARK 3 REMARK 3 FITTING PROCEDURE : NULL REMARK 3 REMARK 3 EM IMAGE RECONSTRUCTION STATISTICS REMARK 3 NOMINAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 ACTUAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 EFFECTIVE RESOLUTION (ANGSTROMS) : 2.600 REMARK 3 NUMBER OF PARTICLES : 160382 REMARK 3 CTF CORRECTION METHOD : PHASE FLIPPING AND AMPLITUDE REMARK 3 CORRECTION REMARK 3 REMARK 3 EM RECONSTRUCTION MAGNIFICATION CALIBRATION: NULL REMARK 3 REMARK 3 OTHER DETAILS: NULL REMARK 4 REMARK 4 8GA5 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 24-FEB-23. REMARK 100 THE DEPOSITION ID IS D_1000272451. REMARK 245 REMARK 245 EXPERIMENTAL DETAILS REMARK 245 RECONSTRUCTION METHOD : SINGLE PARTICLE REMARK 245 SPECIMEN TYPE : NULL REMARK 245 REMARK 245 ELECTRON MICROSCOPE SAMPLE REMARK 245 SAMPLE TYPE : PARTICLE REMARK 245 PARTICLE TYPE : POINT REMARK 245 NAME OF SAMPLE : STRUCTURE OF ECCLC REMARK 245 -L25C/A450C/C85A MUTANT AT PH REMARK 245 4.5 IN 100MM CL REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : NULL REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : NULL REMARK 245 SAMPLE BUFFER : NULL REMARK 245 PH : 4.50 REMARK 245 SAMPLE DETAILS : NULL REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : NULL REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : FEI TITAN KRIOS REMARK 245 DETECTOR TYPE : GATAN K3 (6K X 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 700.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2000.00 REMARK 245 MINIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 MAXIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 NOMINAL CS : NULL REMARK 245 IMAGING MODE : BRIGHT FIELD REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 5865.30 REMARK 245 ILLUMINATION MODE : FLOOD BEAM REMARK 245 NOMINAL MAGNIFICATION : NULL REMARK 245 CALIBRATED MAGNIFICATION : NULL REMARK 245 SOURCE : FIELD EMISSION GUN REMARK 245 ACCELERATION VOLTAGE (KV) : 300 REMARK 245 IMAGING DETAILS : NULL REMARK 247 REMARK 247 ELECTRON MICROSCOPY REMARK 247 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM ELECTRON REMARK 247 MICROSCOPY DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE REMARK 247 THAT CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES REMARK 247 ON THESE RECORDS ARE MEANINGLESS EXCEPT FOR THE CALCULATION REMARK 247 OF THE STRUCTURE FACTORS. 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: 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 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 MET A 1 REMARK 465 LYS A 2 REMARK 465 THR A 3 REMARK 465 ASP A 4 REMARK 465 THR A 5 REMARK 465 PRO A 6 REMARK 465 SER A 7 REMARK 465 LEU A 8 REMARK 465 GLU A 9 REMARK 465 THR A 10 REMARK 465 PRO A 11 REMARK 465 MET B 1 REMARK 465 LYS B 2 REMARK 465 THR B 3 REMARK 465 ASP B 4 REMARK 465 THR B 5 REMARK 465 PRO B 6 REMARK 465 SER B 7 REMARK 465 LEU B 8 REMARK 465 GLU B 9 REMARK 465 THR B 10 REMARK 465 PRO B 11 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 MET A 204 33.47 -99.05 REMARK 500 ALA A 309 72.42 51.27 REMARK 500 LYS B 30 76.43 61.22 REMARK 500 ALA B 101 88.67 -151.39 REMARK 500 MET B 204 34.00 -95.35 REMARK 500 ALA B 309 72.60 52.72 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-29890 RELATED DB: EMDB REMARK 900 CLC-EC1 L25C/A450C/C85A AT PH 4.5 100MM CL INTERMEDIATE DBREF 8GA5 A 1 461 UNP J7Q633 J7Q633_ECOLX 1 461 DBREF 8GA5 B 1 461 UNP J7Q633 J7Q633_ECOLX 1 461 SEQADV 8GA5 CYS A 25 UNP J7Q633 LEU 25 ENGINEERED MUTATION SEQADV 8GA5 ALA A 85 UNP J7Q633 CYS 85 ENGINEERED MUTATION SEQADV 8GA5 CYS A 450 UNP J7Q633 ALA 450 ENGINEERED MUTATION SEQADV 8GA5 CYS B 25 UNP J7Q633 LEU 25 ENGINEERED MUTATION SEQADV 8GA5 ALA B 85 UNP J7Q633 CYS 85 ENGINEERED MUTATION SEQADV 8GA5 CYS B 450 UNP J7Q633 ALA 450 ENGINEERED MUTATION SEQRES 1 A 461 MET LYS THR ASP THR PRO SER LEU GLU THR PRO GLN ALA SEQRES 2 A 461 ALA ARG LEU ARG ARG ARG GLN LEU ILE ARG GLN CYS LEU SEQRES 3 A 461 GLU ARG ASP LYS THR PRO LEU ALA ILE LEU PHE MET ALA SEQRES 4 A 461 ALA VAL VAL GLY THR LEU VAL GLY LEU ALA ALA VAL ALA SEQRES 5 A 461 PHE ASP LYS GLY VAL ALA TRP LEU GLN ASN GLN ARG MET SEQRES 6 A 461 GLY ALA LEU VAL HIS THR ALA ASP ASN TYR PRO LEU LEU SEQRES 7 A 461 LEU THR VAL ALA PHE LEU ALA SER ALA VAL LEU ALA MET SEQRES 8 A 461 PHE GLY TYR PHE LEU VAL ARG LYS TYR ALA PRO GLU ALA SEQRES 9 A 461 GLY GLY SER GLY ILE PRO GLU ILE GLU GLY ALA LEU GLU SEQRES 10 A 461 ASP GLN ARG PRO VAL ARG TRP TRP ARG VAL LEU PRO VAL SEQRES 11 A 461 LYS PHE PHE GLY GLY LEU GLY THR LEU GLY GLY GLY MET SEQRES 12 A 461 VAL LEU GLY ARG GLU GLY PRO THR VAL GLN ILE GLY GLY SEQRES 13 A 461 ASN ILE GLY ARG MET VAL LEU ASP ILE PHE ARG LEU LYS SEQRES 14 A 461 GLY ASP GLU ALA ARG HIS THR LEU LEU ALA THR GLY ALA SEQRES 15 A 461 ALA ALA GLY LEU ALA ALA ALA PHE ASN ALA PRO LEU ALA SEQRES 16 A 461 GLY ILE LEU PHE ILE ILE GLU GLU MET ARG PRO GLN PHE SEQRES 17 A 461 ARG TYR THR LEU ILE SER ILE LYS ALA VAL PHE ILE GLY SEQRES 18 A 461 VAL ILE MET SER THR ILE MET TYR ARG ILE PHE ASN HIS SEQRES 19 A 461 GLU VAL ALA LEU ILE ASP VAL GLY LYS LEU SER ASP ALA SEQRES 20 A 461 PRO LEU ASN THR LEU TRP LEU TYR LEU ILE LEU GLY ILE SEQRES 21 A 461 ILE PHE GLY ILE PHE GLY PRO ILE PHE ASN LYS TRP VAL SEQRES 22 A 461 LEU GLY MET GLN ASP LEU LEU HIS ARG VAL HIS GLY GLY SEQRES 23 A 461 ASN ILE THR LYS TRP VAL LEU MET GLY GLY ALA ILE GLY SEQRES 24 A 461 GLY LEU CYS GLY LEU LEU GLY PHE VAL ALA PRO ALA THR SEQRES 25 A 461 SER GLY GLY GLY PHE ASN LEU ILE PRO ILE ALA THR ALA SEQRES 26 A 461 GLY ASN PHE SER MET GLY MET LEU VAL PHE ILE PHE VAL SEQRES 27 A 461 ALA ARG VAL ILE THR THR LEU LEU CYS PHE SER SER GLY SEQRES 28 A 461 ALA PRO GLY GLY ILE PHE ALA PRO MET LEU ALA LEU GLY SEQRES 29 A 461 THR VAL LEU GLY THR ALA PHE GLY MET VAL ALA VAL GLU SEQRES 30 A 461 LEU PHE PRO GLN TYR HIS LEU GLU ALA GLY THR PHE ALA SEQRES 31 A 461 ILE ALA GLY MET GLY ALA LEU LEU ALA ALA SER ILE ARG SEQRES 32 A 461 ALA PRO LEU THR GLY ILE ILE LEU VAL LEU GLU MET THR SEQRES 33 A 461 ASP ASN TYR GLN LEU ILE LEU PRO MET ILE ILE THR GLY SEQRES 34 A 461 LEU GLY ALA THR LEU LEU ALA GLN PHE THR GLY GLY LYS SEQRES 35 A 461 PRO LEU TYR SER ALA ILE LEU CYS ARG THR LEU ALA LYS SEQRES 36 A 461 GLN GLU ALA GLU GLN LEU SEQRES 1 B 461 MET LYS THR ASP THR PRO SER LEU GLU THR PRO GLN ALA SEQRES 2 B 461 ALA ARG LEU ARG ARG ARG GLN LEU ILE ARG GLN CYS LEU SEQRES 3 B 461 GLU ARG ASP LYS THR PRO LEU ALA ILE LEU PHE MET ALA SEQRES 4 B 461 ALA VAL VAL GLY THR LEU VAL GLY LEU ALA ALA VAL ALA SEQRES 5 B 461 PHE ASP LYS GLY VAL ALA TRP LEU GLN ASN GLN ARG MET SEQRES 6 B 461 GLY ALA LEU VAL HIS THR ALA ASP ASN TYR PRO LEU LEU SEQRES 7 B 461 LEU THR VAL ALA PHE LEU ALA SER ALA VAL LEU ALA MET SEQRES 8 B 461 PHE GLY TYR PHE LEU VAL ARG LYS TYR ALA PRO GLU ALA SEQRES 9 B 461 GLY GLY SER GLY ILE PRO GLU ILE GLU GLY ALA LEU GLU SEQRES 10 B 461 ASP GLN ARG PRO VAL ARG TRP TRP ARG VAL LEU PRO VAL SEQRES 11 B 461 LYS PHE PHE GLY GLY LEU GLY THR LEU GLY GLY GLY MET SEQRES 12 B 461 VAL LEU GLY ARG GLU GLY PRO THR VAL GLN ILE GLY GLY SEQRES 13 B 461 ASN ILE GLY ARG MET VAL LEU ASP ILE PHE ARG LEU LYS SEQRES 14 B 461 GLY ASP GLU ALA ARG HIS THR LEU LEU ALA THR GLY ALA SEQRES 15 B 461 ALA ALA GLY LEU ALA ALA ALA PHE ASN ALA PRO LEU ALA SEQRES 16 B 461 GLY ILE LEU PHE ILE ILE GLU GLU MET ARG PRO GLN PHE SEQRES 17 B 461 ARG TYR THR LEU ILE SER ILE LYS ALA VAL PHE ILE GLY SEQRES 18 B 461 VAL ILE MET SER THR ILE MET TYR ARG ILE PHE ASN HIS SEQRES 19 B 461 GLU VAL ALA LEU ILE ASP VAL GLY LYS LEU SER ASP ALA SEQRES 20 B 461 PRO LEU ASN THR LEU TRP LEU TYR LEU ILE LEU GLY ILE SEQRES 21 B 461 ILE PHE GLY ILE PHE GLY PRO ILE PHE ASN LYS TRP VAL SEQRES 22 B 461 LEU GLY MET GLN ASP LEU LEU HIS ARG VAL HIS GLY GLY SEQRES 23 B 461 ASN ILE THR LYS TRP VAL LEU MET GLY GLY ALA ILE GLY SEQRES 24 B 461 GLY LEU CYS GLY LEU LEU GLY PHE VAL ALA PRO ALA THR SEQRES 25 B 461 SER GLY GLY GLY PHE ASN LEU ILE PRO ILE ALA THR ALA SEQRES 26 B 461 GLY ASN PHE SER MET GLY MET LEU VAL PHE ILE PHE VAL SEQRES 27 B 461 ALA ARG VAL ILE THR THR LEU LEU CYS PHE SER SER GLY SEQRES 28 B 461 ALA PRO GLY GLY ILE PHE ALA PRO MET LEU ALA LEU GLY SEQRES 29 B 461 THR VAL LEU GLY THR ALA PHE GLY MET VAL ALA VAL GLU SEQRES 30 B 461 LEU PHE PRO GLN TYR HIS LEU GLU ALA GLY THR PHE ALA SEQRES 31 B 461 ILE ALA GLY MET GLY ALA LEU LEU ALA ALA SER ILE ARG SEQRES 32 B 461 ALA PRO LEU THR GLY ILE ILE LEU VAL LEU GLU MET THR SEQRES 33 B 461 ASP ASN TYR GLN LEU ILE LEU PRO MET ILE ILE THR GLY SEQRES 34 B 461 LEU GLY ALA THR LEU LEU ALA GLN PHE THR GLY GLY LYS SEQRES 35 B 461 PRO LEU TYR SER ALA ILE LEU CYS ARG THR LEU ALA LYS SEQRES 36 B 461 GLN GLU ALA GLU GLN LEU HET CL A 501 1 HET CL A 502 1 HET CL A 503 1 HET CL B 501 1 HET CL B 502 1 HET CL B 503 1 HETNAM CL CHLORIDE ION FORMUL 3 CL 6(CL 1-) FORMUL 9 HOH *29(H2 O) HELIX 1 AA1 ALA A 14 LEU A 26 1 13 HELIX 2 AA2 PRO A 32 THR A 71 1 40 HELIX 3 AA3 ASN A 74 TYR A 100 1 27 HELIX 4 AA4 ALA A 101 GLY A 105 5 5 HELIX 5 AA5 GLY A 108 LEU A 116 1 9 HELIX 6 AA6 ARG A 126 GLY A 141 1 16 HELIX 7 AA7 ARG A 147 PHE A 166 1 20 HELIX 8 AA8 GLY A 170 PHE A 190 1 21 HELIX 9 AA9 ALA A 192 GLU A 202 1 11 HELIX 10 AB1 THR A 211 ASN A 233 1 23 HELIX 11 AB2 PRO A 248 ASN A 250 5 3 HELIX 12 AB3 THR A 251 GLY A 285 1 35 HELIX 13 AB4 ASN A 287 LEU A 305 1 19 HELIX 14 AB5 ALA A 309 SER A 313 5 5 HELIX 15 AB6 LEU A 319 ALA A 325 1 7 HELIX 16 AB7 SER A 329 SER A 349 1 21 HELIX 17 AB8 ILE A 356 PHE A 379 1 24 HELIX 18 AB9 ALA A 386 SER A 401 1 16 HELIX 19 AC1 ALA A 404 ASP A 417 1 14 HELIX 20 AC2 ASN A 418 GLN A 420 5 3 HELIX 21 AC3 LEU A 421 THR A 439 1 19 HELIX 22 AC4 PRO A 443 GLU A 457 1 15 HELIX 23 AC5 ALA B 14 GLN B 24 1 11 HELIX 24 AC6 LEU B 33 THR B 71 1 39 HELIX 25 AC7 ASN B 74 ALA B 101 1 28 HELIX 26 AC8 PRO B 102 GLY B 105 5 4 HELIX 27 AC9 GLY B 108 GLU B 117 1 10 HELIX 28 AD1 ARG B 123 GLY B 140 1 18 HELIX 29 AD2 ARG B 147 PHE B 166 1 20 HELIX 30 AD3 GLY B 170 ALA B 189 1 20 HELIX 31 AD4 ALA B 192 GLU B 202 1 11 HELIX 32 AD5 THR B 211 ASN B 233 1 23 HELIX 33 AD6 PRO B 248 ASN B 250 5 3 HELIX 34 AD7 THR B 251 GLY B 285 1 35 HELIX 35 AD8 ASN B 287 LEU B 305 1 19 HELIX 36 AD9 ALA B 309 SER B 313 5 5 HELIX 37 AE1 ASN B 318 ALA B 325 1 8 HELIX 38 AE2 MET B 330 SER B 349 1 20 HELIX 39 AE3 ILE B 356 PHE B 379 1 24 HELIX 40 AE4 PRO B 380 HIS B 383 5 4 HELIX 41 AE5 GLY B 387 GLY B 395 1 9 HELIX 42 AE6 GLY B 395 SER B 401 1 7 HELIX 43 AE7 ALA B 404 ASP B 417 1 14 HELIX 44 AE8 LEU B 421 THR B 439 1 19 HELIX 45 AE9 PRO B 443 GLN B 460 1 18 SSBOND 1 CYS A 25 CYS B 450 1555 1555 2.02 SSBOND 2 CYS A 450 CYS B 25 1555 1555 2.03 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 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