HEADER RNA 12-APR-00 1ET4 TITLE CRYSTAL STRUCTURE OF A VITAMIN B12 BINDING RNA APTAMER WITH LIGAND AT TITLE 2 2.3 A CAVEAT 1ET4 C3' OF SEVEN RIBOSES HAVE INCORRECT CHIRALITY COMPND MOL_ID: 1; COMPND 2 MOLECULE: RNA APTAMER, 35-MER; COMPND 3 CHAIN: A, B, C, D, E; COMPND 4 ENGINEERED: YES; COMPND 5 OTHER_DETAILS: COMPLEXED WITH CYANO COBALAMIN SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES KEYWDS B12 BINDING RNA, VITAMIN B12, COBALAMIN, RNA EXPDTA X-RAY DIFFRACTION AUTHOR D.SUSSMAN,C.WILSON REVDAT 5 07-FEB-24 1ET4 1 REMARK REVDAT 4 18-AUG-21 1ET4 1 COMPND REMARK HETNAM FORMUL REVDAT 3 28-DEC-11 1ET4 1 CAVEAT VERSN REVDAT 2 24-FEB-09 1ET4 1 VERSN REVDAT 1 13-NOV-00 1ET4 0 JRNL AUTH D.SUSSMAN,C.WILSON JRNL TITL A WATER CHANNEL IN THE CORE OF THE VITAMIN B(12) RNA JRNL TITL 2 APTAMER. JRNL REF STRUCTURE FOLD.DES. V. 8 719 2000 JRNL REFN ISSN 0969-2126 JRNL PMID 10903943 JRNL DOI 10.1016/S0969-2126(00)00159-3 REMARK 2 REMARK 2 RESOLUTION. 2.30 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 35761 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.199 REMARK 3 FREE R VALUE : 0.232 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.300 REMARK 3 FREE R VALUE TEST SET COUNT : 1914 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 0 REMARK 3 NUCLEIC ACID ATOMS : 3755 REMARK 3 HETEROGEN ATOMS : 465 REMARK 3 SOLVENT ATOMS : 725 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : NULL REMARK 3 BOND ANGLES (DEGREES) : NULL REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : NULL REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1ET4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 14-APR-00. REMARK 100 THE DEPOSITION ID IS D_1000010872. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : 7.4 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 5.0.2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.600 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 39042 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.300 REMARK 200 RESOLUTION RANGE LOW (A) : 10.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.09500 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: EPMR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 71.56 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 4.32 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 6.9 M LICL, 8.0 % ISOPROPANOL, PH 7.4, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 2 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z REMARK 290 3555 -X,Y,-Z REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z+1/2 REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 X+1/2,-Y+1/2,-Z+1/2 REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 45.63500 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 49.04000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 108.98500 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 45.63500 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 49.04000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 108.98500 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 45.63500 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 49.04000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 108.98500 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 45.63500 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 49.04000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 108.98500 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2, 3, 4, 5 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 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 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 350 REMARK 350 BIOMOLECULE: 3 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: C 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 350 REMARK 350 BIOMOLECULE: 4 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: D 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 350 REMARK 350 BIOMOLECULE: 5 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: E 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 IN SAME ASYMMETRIC UNIT 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 O2' U D 523 O HOH D 1302 2.01 REMARK 500 OP2 C C 433 O HOH C 1309 2.12 REMARK 500 OP2 G D 501 O HOH D 1750 2.15 REMARK 500 O3' A A 235 O HOH A 1643 2.17 REMARK 500 O3' A D 535 O HOH D 1346 2.18 REMARK 500 O3' A C 435 O HOH C 1323 2.18 REMARK 500 REMARK 500 REMARK: NULL 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 G A 201 P G A 201 OP3 -0.076 REMARK 500 G D 501 P G D 501 OP3 -0.081 REMARK 500 G E 101 P G E 101 OP3 -0.075 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 G A 212 C2' - C3' - O3' ANGL. DEV. = 12.5 DEGREES REMARK 500 G B 312 C2' - C3' - O3' ANGL. DEV. = 10.4 DEGREES REMARK 500 U B 323 C2' - C3' - O3' ANGL. DEV. = 15.2 DEGREES REMARK 500 C B 324 O3' - P - OP2 ANGL. DEV. = 6.8 DEGREES REMARK 500 G C 412 C2' - C3' - O3' ANGL. DEV. = 12.7 DEGREES REMARK 500 G D 512 C2' - C3' - O3' ANGL. DEV. = 11.6 DEGREES REMARK 500 G E 112 C2' - C3' - O3' ANGL. DEV. = 13.8 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 A A 214 0.06 SIDE CHAIN REMARK 500 G A 226 0.08 SIDE CHAIN REMARK 500 A B 314 0.07 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CNC A 701 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CNC B 801 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CNC C 901 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CNC D 1001 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CNC E 601 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1DDY RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF A VITAMIN B12 BINDING RNA APTAMER WITH LIGAND REMARK 900 AT 3.0 A DBREF 1ET4 A 201 235 PDB 1ET4 1ET4 201 235 DBREF 1ET4 B 301 335 PDB 1ET4 1ET4 301 335 DBREF 1ET4 C 401 435 PDB 1ET4 1ET4 401 435 DBREF 1ET4 D 501 535 PDB 1ET4 1ET4 501 535 DBREF 1ET4 E 101 135 PDB 1ET4 1ET4 101 135 SEQRES 1 A 35 G G A A C C G G U G C G C SEQRES 2 A 35 A U A A C C A C C U C A G SEQRES 3 A 35 U G C G A G C A A SEQRES 1 B 35 G G A A C C G G U G C G C SEQRES 2 B 35 A U A A C C A C C U C A G SEQRES 3 B 35 U G C G A G C A A SEQRES 1 C 35 G G A A C C G G U G C G C SEQRES 2 C 35 A U A A C C A C C U C A G SEQRES 3 C 35 U G C G A G C A A SEQRES 1 D 35 G G A A C C G G U G C G C SEQRES 2 D 35 A U A A C C A C C U C A G SEQRES 3 D 35 U G C G A G C A A SEQRES 1 E 35 G G A A C C G G U G C G C SEQRES 2 E 35 A U A A C C A C C U C A G SEQRES 3 E 35 U G C G A G C A A HET CNC A 701 93 HET CNC B 801 93 HET CNC C 901 93 HET CNC D1001 93 HET CNC E 601 93 HETNAM CNC CYANOCOBALAMIN FORMUL 6 CNC 5(C63 H89 CO N14 O14 P 2+) FORMUL 11 HOH *725(H2 O) SITE 1 AC1 22 C A 211 A A 214 A A 216 C A 229 SITE 2 AC1 22 G A 230 A A 231 HOH A1151 HOH A1180 SITE 3 AC1 22 HOH A1246 HOH A1253 HOH A1272 HOH A1387 SITE 4 AC1 22 HOH A1459 HOH A1503 HOH A1508 HOH A1673 SITE 5 AC1 22 HOH A1764 HOH B1490 HOH B1612 A D 516 SITE 6 AC1 22 HOH D1189 HOH D1443 SITE 1 AC2 22 HOH A1290 C B 311 A B 314 A B 316 SITE 2 AC2 22 C B 329 G B 330 HOH B1121 HOH B1137 SITE 3 AC2 22 HOH B1266 HOH B1293 HOH B1364 HOH B1420 SITE 4 AC2 22 HOH B1468 HOH B1612 HOH B1707 HOH B1709 SITE 5 AC2 22 HOH B1725 HOH B1777 HOH B1802 CNC D1001 SITE 6 AC2 22 HOH D1256 HOH D1328 SITE 1 AC3 15 C C 411 A C 414 A C 416 C C 429 SITE 2 AC3 15 G C 430 HOH C1109 HOH C1139 HOH C1178 SITE 3 AC3 15 HOH C1211 HOH C1236 HOH C1258 HOH C1271 SITE 4 AC3 15 HOH C1454 A E 117 HOH E1314 SITE 1 AC4 21 A A 216 A A 217 HOH A1246 CNC B 801 SITE 2 AC4 21 HOH B1725 C D 511 A D 514 A D 516 SITE 3 AC4 21 C D 529 G D 530 HOH D1107 HOH D1143 SITE 4 AC4 21 HOH D1168 HOH D1232 HOH D1255 HOH D1256 SITE 5 AC4 21 HOH D1288 HOH D1328 HOH D1332 HOH D1409 SITE 6 AC4 21 HOH D1591 SITE 1 AC5 13 A C 417 HOH C1211 C E 111 A E 114 SITE 2 AC5 13 A E 116 C E 129 G E 130 HOH E1281 SITE 3 AC5 13 HOH E1321 HOH E1585 HOH E1754 HOH E1759 SITE 4 AC5 13 HOH E1778 CRYST1 91.270 98.080 217.970 90.00 90.00 90.00 I 2 2 2 40 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 0.010957 0.000000 0.000000 0.00000 SCALE2 0.000000 0.010196 0.000000 0.00000 SCALE3 0.000000 0.000000 0.004588 0.00000