HEADER TRANSFERASE/DNA/RNA 25-MAY-24 9C0J TITLE STRUCTURE OF THE ELONGATING DRT2 REVERSE TRANSCRIPTASE IN COMPLEX WITH TITLE 2 ITS NON-CODING RNA AND DNTPS COMPND MOL_ID: 1; COMPND 2 MOLECULE: REVERSE TRANSCRIPTASE/MATURASE FAMILY PROTEIN; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: ANTIVIRAL REVERSE TRANSCRIPTASE DRT2; COMPND 5 ENGINEERED: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: CCDNA; COMPND 8 CHAIN: P; COMPND 9 ENGINEERED: YES; COMPND 10 MOL_ID: 3; COMPND 11 MOLECULE: DRT2 NCRNA; COMPND 12 CHAIN: R; COMPND 13 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: KLEBSIELLA PNEUMONIAE; SOURCE 3 ORGANISM_TAXID: 573; SOURCE 4 GENE: QIG75_19540; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 MOL_ID: 2; SOURCE 8 ORGANISM_SCIENTIFIC: KLEBSIELLA PNEUMONIAE; SOURCE 9 ORGANISM_TAXID: 573; SOURCE 10 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 11 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 12 MOL_ID: 3; SOURCE 13 ORGANISM_SCIENTIFIC: KLEBSIELLA PNEUMONIAE; SOURCE 14 ORGANISM_TAXID: 573; SOURCE 15 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 16 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS REVERSE TRANSCRIPTASE, ROLLING CIRCLE AMPLIFICATION, PHAGE DEFENSE, KEYWDS 2 TRANSFERASE-DNA-RNA COMPLEX EXPDTA ELECTRON MICROSCOPY AUTHOR M.E.WILKINSON,F.ZHANG REVDAT 4 16-OCT-24 9C0J 1 JRNL REVDAT 3 18-SEP-24 9C0J 1 REMARK REVDAT 2 11-SEP-24 9C0J 1 JRNL REVDAT 1 04-SEP-24 9C0J 0 JRNL AUTH M.E.WILKINSON,D.LI,A.GAO,R.K.MACRAE,F.ZHANG JRNL TITL PHAGE-TRIGGERED REVERSE TRANSCRIPTION ASSEMBLES A TOXIC JRNL TITL 2 REPETITIVE GENE FROM A NONCODING RNA. JRNL REF SCIENCE V. 386 Q3977 2024 JRNL REFN ESSN 1095-9203 JRNL PMID 39208082 JRNL DOI 10.1126/SCIENCE.ADQ3977 REMARK 2 REMARK 2 RESOLUTION. 3.17 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : RELION 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) : 3.170 REMARK 3 NUMBER OF PARTICLES : 136601 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 9C0J COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 28-MAY-24. REMARK 100 THE DEPOSITION ID IS D_1000284014. 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 : UG2 REVERSE TRANSCRIPTASE REMARK 245 RIBONUCLEOPROTEIN COMPLEX, REMARK 245 ELONGATING STATE 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 : 7.90 REMARK 245 SAMPLE DETAILS : NULL REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : 18453 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) : 1000.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2700.00 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) : 4030.00 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: TRIMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, P, R 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 U R 26 REMARK 465 G R 27 REMARK 465 U R 28 REMARK 465 A R 29 REMARK 465 C R 30 REMARK 465 A R 31 REMARK 465 G R 32 REMARK 465 G R 33 REMARK 465 U R 34 REMARK 465 U R 35 REMARK 465 G R 36 REMARK 465 U R 37 REMARK 465 C R 38 REMARK 465 A R 39 REMARK 465 A R 40 REMARK 465 G R 41 REMARK 465 C R 42 REMARK 465 C R 43 REMARK 465 U R 44 REMARK 465 C R 45 REMARK 465 C R 46 REMARK 465 C R 47 REMARK 465 A R 48 REMARK 465 C R 49 REMARK 465 A R 50 REMARK 465 G R 51 REMARK 465 G R 52 REMARK 465 U R 53 REMARK 465 C R 54 REMARK 465 U R 55 REMARK 465 U R 56 REMARK 465 G R 57 REMARK 465 G R 58 REMARK 465 U R 59 REMARK 465 G R 60 REMARK 465 A R 61 REMARK 465 A R 62 REMARK 465 A R 63 REMARK 465 C R 64 REMARK 465 C R 65 REMARK 465 A R 66 REMARK 465 A R 67 REMARK 465 U R 68 REMARK 465 C R 69 REMARK 465 A R 70 REMARK 465 C R 71 REMARK 465 U R 72 REMARK 465 G R 73 REMARK 465 U R 74 REMARK 465 G R 75 REMARK 465 A R 76 REMARK 465 C R 77 REMARK 465 G R 78 REMARK 465 A R 79 REMARK 465 C R 80 REMARK 465 G R 81 REMARK 465 G R 82 REMARK 465 U R 83 REMARK 465 A R 84 REMARK 465 A R 85 REMARK 465 G R 86 REMARK 465 C R 87 REMARK 465 A R 88 REMARK 465 A R 89 REMARK 465 C R 90 REMARK 465 A R 91 REMARK 465 C R 92 REMARK 465 U R 93 REMARK 465 U R 94 REMARK 465 G R 95 REMARK 465 G R 96 REMARK 465 A R 97 REMARK 465 U R 98 REMARK 465 G R 99 REMARK 465 A R 100 REMARK 465 U R 101 REMARK 465 A R 102 REMARK 465 U R 103 REMARK 465 U R 104 REMARK 465 C R 105 REMARK 465 A R 106 REMARK 465 U R 107 REMARK 465 A R 108 REMARK 465 A R 109 REMARK 465 U R 110 REMARK 465 U R 111 REMARK 465 G R 112 REMARK 465 A R 113 REMARK 465 C R 114 REMARK 465 U R 115 REMARK 465 C R 116 REMARK 465 C R 117 REMARK 465 A R 118 REMARK 465 C R 119 REMARK 465 G R 120 REMARK 465 C R 121 REMARK 465 U R 122 REMARK 465 A R 123 REMARK 465 C R 124 REMARK 465 U R 125 REMARK 465 G R 126 REMARK 465 A R 127 REMARK 465 U R 128 REMARK 465 U R 129 REMARK 465 A R 130 REMARK 465 C R 131 REMARK 465 A R 132 REMARK 465 U R 133 REMARK 465 U R 143 REMARK 465 A R 144 REMARK 465 U R 145 REMARK 465 C R 146 REMARK 465 U R 147 REMARK 465 A R 148 REMARK 465 A R 149 REMARK 465 C R 150 REMARK 465 A R 151 REMARK 465 U R 152 REMARK 465 U R 153 REMARK 465 U R 178 REMARK 465 U R 179 REMARK 465 A R 180 REMARK 465 G R 181 REMARK 465 U R 240 REMARK 465 C R 241 REMARK 465 C R 242 REMARK 465 A R 281 REMARK 465 U R 282 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 LYS A 56 CG CD CE NZ REMARK 470 ASP A 57 CG OD1 OD2 REMARK 470 LYS A 58 CG CD CE NZ REMARK 470 SER A 59 OG REMARK 470 THR A 60 OG1 CG2 REMARK 470 LYS A 61 CG CD CE NZ REMARK 470 GLN A 62 CG CD OE1 NE2 REMARK 470 LEU A 63 CG CD1 CD2 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 DT P 5 C1' DT P 5 N1 0.079 REMARK 500 DT P 8 C1' DT P 8 N1 0.080 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ASP A 5 CB - CG - OD2 ANGL. DEV. = 8.5 DEGREES REMARK 500 ASP A 329 CB - CG - OD1 ANGL. DEV. = 10.2 DEGREES REMARK 500 DT P 5 O4' - C1' - N1 ANGL. DEV. = 6.2 DEGREES REMARK 500 C R 2 C6 - N1 - C2 ANGL. DEV. = -2.5 DEGREES REMARK 500 U R 173 O4' - C1' - N1 ANGL. DEV. = 4.7 DEGREES REMARK 500 U R 268 C2 - N1 - C1' ANGL. DEV. = 7.8 DEGREES REMARK 500 C R 269 C2 - N1 - C1' ANGL. DEV. = 7.1 DEGREES 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 268 -106.55 58.71 REMARK 500 ASP A 312 -19.38 71.70 REMARK 500 SER A 313 -27.28 -146.81 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 MG A 501 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 LEU A 141 O REMARK 620 2 ASP A 269 OD2 111.5 REMARK 620 3 TTP A 502 O1B 142.7 103.1 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K R 301 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 G R 158 O6 REMARK 620 2 G R 250 O6 75.0 REMARK 620 3 U R 251 O4 72.9 67.2 REMARK 620 N 1 2 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-45086 RELATED DB: EMDB REMARK 900 STRUCTURE OF THE ELONGATING UG2 DARCART REVERSE TRANSCRIPTASE IN REMARK 900 COMPLEX WITH ITS NON-CODING RNA AND DNTPS DBREF1 9C0J A 1 425 UNP A0AA43TDM1_KLEPN DBREF2 9C0J A A0AA43TDM1 1 425 DBREF 9C0J P 3 11 PDB 9C0J 9C0J 3 11 DBREF 9C0J R 0 282 PDB 9C0J 9C0J 0 282 SEQRES 1 A 425 MET ASN ASN ASP ASP TYR PRO TRP PHE ARG LYS ARG GLY SEQRES 2 A 425 TYR LEU HIS PHE ASP GLU PRO VAL SER LEU LYS LYS ALA SEQRES 3 A 425 VAL LYS TYR VAL SER SER PRO GLU LYS ILE ILE LYS HIS SEQRES 4 A 425 SER PHE LEU PRO PHE LEU SER PHE GLU VAL LYS SER PHE SEQRES 5 A 425 LYS ILE LYS LYS ASP LYS SER THR LYS GLN LEU SER LYS SEQRES 6 A 425 THR GLU LYS LEU ARG PRO ILE ALA TYR SER SER HIS LEU SEQRES 7 A 425 ASP SER HIS ILE TYR ALA PHE TYR ALA GLU TYR LEU THR SEQRES 8 A 425 GLY HIS TYR GLU LEU LEU ILE GLN GLU ASN ASN LEU HIS SEQRES 9 A 425 GLU ASN ILE LEU ALA PHE ARG SER LEU ASN LYS SER ASN SEQRES 10 A 425 ILE GLU PHE ALA LYS ARG ALA PHE ASP THR ILE THR GLU SEQRES 11 A 425 MET GLY GLU CYS SER ALA VAL ALA LEU ASP LEU SER GLY SEQRES 12 A 425 PHE PHE ASP ASN LEU ASP HIS GLN ILE LEU LYS HIS GLN SEQRES 13 A 425 TRP CYS LYS VAL ILE GLY THR GLU ALA LEU PRO GLN ASP SEQRES 14 A 425 HIS PHE ALA ILE TYR LYS SER ILE THR ARG TYR SER LYS SEQRES 15 A 425 VAL ASP LYS ASN ARG ALA TYR GLU ILE LEU GLY ILE SER SEQRES 16 A 425 LYS ASN ASN PRO LYS TYR ASN ARG ARG LYS ILE CYS THR SEQRES 17 A 425 PRO VAL ASP PHE ARG ASN LYS ILE ARG LYS ASN GLY LEU SEQRES 18 A 425 ILE ILE VAL ASN ASN SER GLN LYS GLY ILE PRO GLN GLY SEQRES 19 A 425 SER PRO ILE SER ALA LEU LEU SER ASN ILE TYR MET LEU SEQRES 20 A 425 ASP PHE ASP ILE GLU MET ARG ASP TYR ALA GLN GLU ARG SEQRES 21 A 425 GLY GLY HIS TYR TYR ARG TYR CYS ASP ASP MET LEU PHE SEQRES 22 A 425 ILE VAL PRO THR LYS TYR ASN LYS THR LEU ALA GLY ASP SEQRES 23 A 425 VAL ALA GLN ARG ILE LYS HIS LEU LYS VAL GLU LEU ASN SEQRES 24 A 425 THR LYS LYS THR GLU ILE ARG ASP PHE ILE TYR LYS ASP SEQRES 25 A 425 SER THR LEU VAL ALA ASN MET PRO LEU GLN TYR LEU GLY SEQRES 26 A 425 PHE ILE PHE ASP GLY SER ASN ILE LEU LEU ARG SER SER SEQRES 27 A 425 SER LEU ALA ARG TYR SER GLU ARG MET LYS ARG GLY VAL SEQRES 28 A 425 ARG LEU ALA LYS ALA THR MET ASP SER LYS ASN ARG ILE SEQRES 29 A 425 ARG GLU ASN LYS GLY GLU ALA LEU LYS ALA LEU PHE LYS SEQRES 30 A 425 LYS LYS LEU TYR ALA ARG TYR SER HIS ILE GLY ARG ARG SEQRES 31 A 425 ASN PHE LEU THR TYR GLY TYR ARG ALA ALA LYS ILE MET SEQRES 32 A 425 ASN SER LYS ALA ILE LYS ARG GLN LEU LYS PRO LEU GLN SEQRES 33 A 425 LYS ARG LEU GLU ASN GLU ILE LEU LYS SEQRES 1 P 9 DT DA DT DG DC DT DG DT DA SEQRES 1 R 283 G G C C C U A A A C A A A SEQRES 2 R 283 G G U U U A G G G G U A U SEQRES 3 R 283 U G U A C A G G U U G U C SEQRES 4 R 283 A A G C C U C C C A C A G SEQRES 5 R 283 G U C U U G G U G A A A C SEQRES 6 R 283 C A A U C A C U G U G A C SEQRES 7 R 283 G A C G G U A A G C A A C SEQRES 8 R 283 A C U U G G A U G A U A U SEQRES 9 R 283 U C A U A A U U G A C U C SEQRES 10 R 283 C A C G C U A C U G A U U SEQRES 11 R 283 A C A U U A U A C A G C A SEQRES 12 R 283 U A U C U A A C A U U U G SEQRES 13 R 283 C G G C G A G G U U C A C SEQRES 14 R 283 A A U U U G U A U U U A G SEQRES 15 R 283 G U A C U G A U U G U G G SEQRES 16 R 283 A U G A G A A G G U U G G SEQRES 17 R 283 A G A A A G A C C A C U U SEQRES 18 R 283 G G U U A A G C C G G A G SEQRES 19 R 283 G A U G U G U C C U A G A SEQRES 20 R 283 A U U G U C G C U A U U C SEQRES 21 R 283 U G U C A U C C U C C G G SEQRES 22 R 283 U U U U G C U A A U HET MG A 501 1 HET TTP A 502 29 HET K R 301 1 HETNAM MG MAGNESIUM ION HETNAM TTP THYMIDINE-5'-TRIPHOSPHATE HETNAM K POTASSIUM ION FORMUL 4 MG MG 2+ FORMUL 5 TTP C10 H17 N2 O14 P3 FORMUL 6 K K 1+ HELIX 1 AA1 SER A 22 SER A 31 1 10 HELIX 2 AA2 SER A 32 LYS A 38 1 7 HELIX 3 AA3 SER A 76 ASN A 101 1 26 HELIX 4 AA4 SER A 116 GLY A 132 1 17 HELIX 5 AA5 ASP A 149 GLY A 162 1 14 HELIX 6 AA6 PRO A 167 ARG A 179 1 13 HELIX 7 AA7 LYS A 185 GLY A 193 1 9 HELIX 8 AA8 THR A 208 ILE A 216 1 9 HELIX 9 AA9 ILE A 237 MET A 246 1 10 HELIX 10 AB1 MET A 246 ARG A 260 1 15 HELIX 11 AB2 PRO A 276 ASN A 280 5 5 HELIX 12 AB3 THR A 282 LYS A 292 1 11 HELIX 13 AB4 ASN A 299 THR A 303 5 5 HELIX 14 AB5 ARG A 336 LYS A 368 1 33 HELIX 15 AB6 LYS A 377 SER A 385 1 9 HELIX 16 AB7 ASN A 391 MET A 403 1 13 HELIX 17 AB8 SER A 405 LYS A 413 1 9 HELIX 18 AB9 PRO A 414 LYS A 425 1 12 SHEET 1 AA1 4 LEU A 63 TYR A 74 0 SHEET 2 AA1 4 PHE A 44 LYS A 56 -1 N LEU A 45 O TYR A 74 SHEET 3 AA1 4 SER A 181 ASP A 184 1 O VAL A 183 N PHE A 44 SHEET 4 AA1 4 ILE A 222 VAL A 224 -1 O ILE A 223 N LYS A 182 SHEET 1 AA2 5 HIS A 263 TYR A 267 0 SHEET 2 AA2 5 ASP A 270 VAL A 275 -1 O LEU A 272 N TYR A 265 SHEET 3 AA2 5 CYS A 134 LEU A 139 -1 N SER A 135 O VAL A 275 SHEET 4 AA2 5 GLU A 304 LYS A 311 -1 O ARG A 306 N ALA A 136 SHEET 5 AA2 5 THR A 314 ALA A 317 -1 O THR A 314 N LYS A 311 SHEET 1 AA3 3 LEU A 321 TYR A 323 0 SHEET 2 AA3 3 PHE A 326 PHE A 328 -1 O PHE A 328 N LEU A 321 SHEET 3 AA3 3 ILE A 333 LEU A 335 -1 O LEU A 334 N ILE A 327 LINK O LEU A 141 MG MG A 501 1555 1555 2.31 LINK OD2 ASP A 269 MG MG A 501 1555 1555 2.12 LINK MG MG A 501 O1B TTP A 502 1555 1555 2.10 LINK O6 G R 158 K K R 301 1555 1555 3.00 LINK O6 G R 250 K K R 301 1555 1555 3.39 LINK O4 U R 251 K K R 301 1555 1555 2.85 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