HEADER TRANSCRIPTION/RNA 25-AUG-11 2LI8 TITLE THE SOLUTION STRUCTURE OF THE LIN28-ZNF DOMAINS BOUND TO AGGAGAU OF TITLE 2 PRE-LET-7 MIRNA COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN LIN-28 HOMOLOG A; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: CCHC-TYPE 1 AND CCHC-TYPE 1 ZINC FINGER DOMAIN RESIDUES COMPND 5 124-186; COMPND 6 SYNONYM: LIN-28A, ZINC FINGER CCHC DOMAIN-CONTAINING PROTEIN 1; COMPND 7 ENGINEERED: YES; COMPND 8 MOL_ID: 2; COMPND 9 MOLECULE: RNA (5'-R(*AP*GP*GP*AP*GP*AP*U)-3'); COMPND 10 CHAIN: B; COMPND 11 FRAGMENT: HSA-PRE-LET-7G TERMINAL LOOP; 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: CSDD1, LIN-28A, LIN28, LIN28A, ZCCHC1; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3)CODON PLUS; SOURCE 9 EXPRESSION_SYSTEM_VECTOR: PET28A; SOURCE 10 MOL_ID: 2; SOURCE 11 SYNTHETIC: YES KEYWDS ZINC FINGER, MICRO RNA, TRANSCRIPTION-RNA COMPLEX EXPDTA SOLUTION NMR NUMMDL 20 AUTHOR F.H.-T.ALLAIN,F.E.LOUGHLIN REVDAT 2 25-JAN-12 2LI8 1 JRNL REVDAT 1 07-DEC-11 2LI8 0 JRNL AUTH F.E.LOUGHLIN,L.F.GEBERT,H.TOWBIN,A.BRUNSCHWEIGER,J.HALL, JRNL AUTH 2 F.H.ALLAIN JRNL TITL STRUCTURAL BASIS OF PRE-LET-7 MIRNA RECOGNITION BY THE ZINC JRNL TITL 2 KNUCKLES OF PLURIPOTENCY FACTOR LIN28. JRNL REF NAT.STRUCT.MOL.BIOL. V. 19 84 2011 JRNL REFN ISSN 1545-9993 JRNL PMID 22157959 JRNL DOI 10.1038/NSMB.2202 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : AMBER REMARK 3 AUTHORS : CASE, DARDEN, CHEATHAM, III, SIMMERLING, WANG, REMARK 3 DUKE, LUO, AND KOLLM REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: EXPLICIT WATER AMBER FF99 25 PS REMARK 4 REMARK 4 2LI8 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 21-SEP-11. REMARK 100 THE RCSB ID CODE IS RCSB102416. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 303; 283 REMARK 210 PH : 5.6; 5.6 REMARK 210 IONIC STRENGTH : 10; 10 REMARK 210 PRESSURE : 1 ATM; 1 ATM REMARK 210 SAMPLE CONTENTS : 10 MM [U-99% 2H] SODIUM ACETATE, REMARK 210 1.5 MM BETA-MERCAPTOETHANOL, 1.6 REMARK 210 MM ZNCL2, 0.8 MM [U-99% 13C; U- REMARK 210 99% 15N] LIN28-ZNF, 0.8 MM REMARK 210 AGGAGAU, 90% H2O, 10% D2O; 10 MM REMARK 210 [U-99% 2H] SODIUM ACETATE, 1.5 MM REMARK 210 BETA-MERCAPTOETHANOL, 1.6 MM REMARK 210 ZNCL2, 0.8 MM [U-99% 15N] LIN28- REMARK 210 ZNF, 0.8 MM AGGAGAU, 90% H2O, 10% REMARK 210 D2O; 10 MM [U-99% 2H] SODIUM REMARK 210 ACETATE, 1.5 MM BETA- REMARK 210 MERCAPTOETHANOL, 1.6 MM ZNCL2, REMARK 210 0.8 MM [U-99% 13C; U-99% 15N] REMARK 210 LIN28-ZNF, 0.8 MM AGGAGAU, 100% REMARK 210 D2O; 10 MM [U-99% 2H] SODIUM REMARK 210 ACETATE, 1.5 MM BETA- REMARK 210 MERCAPTOETHANOL, 1.6 MM ZNCL2, REMARK 210 0.8 MM [U-10% 13C; U-99% 15N] REMARK 210 LIN28-ZNF, 0.8 MM AGGAGAU, 100% REMARK 210 D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 3D_15N-SEPARATED_NOESY 3D_13C- REMARK 210 SEPARATED_NOESY; 3D 1H-13C NOESY; REMARK 210 2D 1H-15N HSQC; 2D 1H-13C HSQC REMARK 210 ALIPHATIC; 2D 1H-13C HSQC REMARK 210 AROMATIC; 3D CBCA(CO)NH; 3D REMARK 210 HNCACB; 3D HNCO; 3D H(CCO)NH; 3D REMARK 210 HCCH-TOCSY; 2D 1H-1H TOCSY; 2D- REMARK 210 F1F-F2F-NOESY; 2D-F2F-NOESY; 3D- REMARK 210 F3F-NOESY; 2D 1H-15N HMQC; 2D 1H- REMARK 210 1H NOESY; 3D-F3FE-NOESY; 3D 1H- REMARK 210 15N NOESY REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ; 600 MHZ; 700 MHZ; 900 REMARK 210 MHZ REMARK 210 SPECTROMETER MODEL : AV-III; AVANCE REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : SPARKY, TOPSPIN, CYANA 3.0 REMARK 210 METHOD USED : SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 200 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 20 REMARK 210 CONFORMERS, SELECTION CRITERIA : LOWEST ENERGY/FEWEST VIOLATION 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: 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. (RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 465 SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 MODELS 1-20 REMARK 465 RES C SSSEQI REMARK 465 SER A 113 REMARK 465 SER A 114 REMARK 465 GLY A 115 REMARK 465 LEU A 116 REMARK 465 VAL A 117 REMARK 465 PRO A 118 REMARK 465 ARG A 119 REMARK 465 GLY A 120 REMARK 465 SER A 121 REMARK 465 HIS A 122 REMARK 465 MET A 123 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 1 PRO A 124 CA - N - CD ANGL. DEV. = -9.8 DEGREES REMARK 500 1 A B 1 O4' - C1' - N9 ANGL. DEV. = 5.9 DEGREES REMARK 500 1 G B 3 O4' - C1' - N9 ANGL. DEV. = 4.9 DEGREES REMARK 500 1 A B 6 O4' - C1' - N9 ANGL. DEV. = 4.2 DEGREES REMARK 500 2 PRO A 124 CA - N - CD ANGL. DEV. = -9.5 DEGREES REMARK 500 2 A B 1 O4' - C1' - N9 ANGL. DEV. = 8.0 DEGREES REMARK 500 3 A B 1 O4' - C1' - N9 ANGL. DEV. = 6.8 DEGREES REMARK 500 3 A B 6 O4' - C1' - N9 ANGL. DEV. = 4.2 DEGREES REMARK 500 4 PRO A 124 CA - N - CD ANGL. DEV. = -9.6 DEGREES REMARK 500 4 A B 1 O4' - C1' - N9 ANGL. DEV. = 7.6 DEGREES REMARK 500 5 PRO A 124 CA - N - CD ANGL. DEV. = -9.9 DEGREES REMARK 500 5 A B 1 O4' - C1' - N9 ANGL. DEV. = 6.0 DEGREES REMARK 500 5 A B 6 O4' - C1' - N9 ANGL. DEV. = 4.6 DEGREES REMARK 500 6 A B 1 O4' - C1' - N9 ANGL. DEV. = 8.9 DEGREES REMARK 500 7 PRO A 124 CA - N - CD ANGL. DEV. = -9.6 DEGREES REMARK 500 7 A B 1 O4' - C1' - N9 ANGL. DEV. = 8.9 DEGREES REMARK 500 7 G B 3 O4' - C1' - N9 ANGL. DEV. = 4.5 DEGREES REMARK 500 8 PRO A 124 CA - N - CD ANGL. DEV. = -10.4 DEGREES REMARK 500 8 A B 1 O4' - C1' - N9 ANGL. DEV. = 5.6 DEGREES REMARK 500 9 A B 1 O4' - C1' - N9 ANGL. DEV. = 5.4 DEGREES REMARK 500 9 G B 3 O4' - C1' - N9 ANGL. DEV. = 4.6 DEGREES REMARK 500 9 U B 7 O4' - C1' - N1 ANGL. DEV. = 4.6 DEGREES REMARK 500 10 PRO A 124 CA - N - CD ANGL. DEV. = -10.1 DEGREES REMARK 500 10 A B 1 O4' - C1' - N9 ANGL. DEV. = 5.7 DEGREES REMARK 500 10 G B 3 O4' - C1' - N9 ANGL. DEV. = 4.5 DEGREES REMARK 500 11 PRO A 124 CA - N - CD ANGL. DEV. = -9.3 DEGREES REMARK 500 11 A B 1 O4' - C1' - N9 ANGL. DEV. = 5.4 DEGREES REMARK 500 12 PRO A 124 CA - N - CD ANGL. DEV. = -9.7 DEGREES REMARK 500 12 A B 1 O4' - C1' - N9 ANGL. DEV. = 7.5 DEGREES REMARK 500 13 PRO A 124 CA - N - CD ANGL. DEV. = -9.1 DEGREES REMARK 500 13 A B 1 O4' - C1' - N9 ANGL. DEV. = 6.8 DEGREES REMARK 500 14 PRO A 124 CA - N - CD ANGL. DEV. = -9.3 DEGREES REMARK 500 14 A B 1 C1' - O4' - C4' ANGL. DEV. = -4.4 DEGREES REMARK 500 14 A B 1 C3' - C2' - C1' ANGL. DEV. = -4.8 DEGREES REMARK 500 14 A B 1 O4' - C1' - N9 ANGL. DEV. = 11.6 DEGREES REMARK 500 14 A B 4 O4' - C1' - N9 ANGL. DEV. = 5.0 DEGREES REMARK 500 15 PRO A 124 CA - N - CD ANGL. DEV. = -10.1 DEGREES REMARK 500 15 A B 1 O4' - C1' - N9 ANGL. DEV. = 6.0 DEGREES REMARK 500 16 PRO A 124 CA - N - CD ANGL. DEV. = -9.7 DEGREES REMARK 500 17 PRO A 124 CA - N - CD ANGL. DEV. = -10.0 DEGREES REMARK 500 17 A B 1 O4' - C1' - N9 ANGL. DEV. = 9.5 DEGREES REMARK 500 18 G B 3 O4' - C1' - N9 ANGL. DEV. = 5.0 DEGREES REMARK 500 19 PRO A 124 CA - N - CD ANGL. DEV. = -8.9 DEGREES REMARK 500 19 A B 1 O4' - C1' - N9 ANGL. DEV. = 6.2 DEGREES REMARK 500 19 G B 3 O4' - C1' - N9 ANGL. DEV. = 4.8 DEGREES REMARK 500 20 PRO A 124 CA - N - CD ANGL. DEV. = -9.2 DEGREES REMARK 500 20 A B 6 C5' - C4' - C3' ANGL. DEV. = -8.5 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 1 SER A 134 -147.92 55.75 REMARK 500 1 TYR A 140 5.46 -67.90 REMARK 500 1 PRO A 156 98.68 -67.49 REMARK 500 1 HIS A 162 10.93 -67.87 REMARK 500 1 PHE A 163 -33.69 -131.35 REMARK 500 1 SER A 173 13.40 -146.66 REMARK 500 1 GLN A 179 18.82 -141.62 REMARK 500 1 SER A 183 -169.02 50.06 REMARK 500 1 ALA A 184 14.08 -149.78 REMARK 500 2 MET A 129 -178.84 -65.56 REMARK 500 2 GLN A 130 -169.72 -126.38 REMARK 500 2 SER A 134 18.32 -142.78 REMARK 500 2 LYS A 135 -24.52 123.59 REMARK 500 2 TYR A 140 10.73 -69.97 REMARK 500 2 HIS A 162 8.97 -68.39 REMARK 500 2 PHE A 163 -32.24 -131.09 REMARK 500 2 HIS A 169 -164.08 -128.98 REMARK 500 2 SER A 173 14.85 -145.14 REMARK 500 2 GLN A 179 16.15 -140.37 REMARK 500 2 ALA A 184 -0.91 -147.13 REMARK 500 3 LYS A 127 -172.26 50.38 REMARK 500 3 LYS A 131 -5.57 -148.14 REMARK 500 3 ARG A 133 34.23 -73.71 REMARK 500 3 TYR A 140 5.77 -68.14 REMARK 500 3 PRO A 156 97.36 -65.16 REMARK 500 3 HIS A 162 12.36 -67.73 REMARK 500 3 PHE A 163 -34.01 -131.37 REMARK 500 3 SER A 173 13.59 -145.53 REMARK 500 3 GLN A 179 11.13 -143.69 REMARK 500 4 LYS A 127 -171.28 57.35 REMARK 500 4 SER A 128 -164.05 57.40 REMARK 500 4 ARG A 132 -161.18 49.23 REMARK 500 4 HIS A 162 8.86 -68.01 REMARK 500 4 PHE A 163 -36.12 -131.16 REMARK 500 4 SER A 173 11.81 -144.07 REMARK 500 4 GLN A 179 -6.85 -141.95 REMARK 500 4 PRO A 182 3.08 -66.36 REMARK 500 5 LYS A 125 -8.41 -147.58 REMARK 500 5 LYS A 131 26.26 40.65 REMARK 500 5 ARG A 132 -22.98 59.89 REMARK 500 5 SER A 134 -155.38 39.48 REMARK 500 5 ASP A 137 -177.11 -69.92 REMARK 500 5 HIS A 162 12.15 -66.99 REMARK 500 5 PHE A 163 -37.84 -131.06 REMARK 500 5 SER A 173 11.36 -147.14 REMARK 500 5 PRO A 182 1.03 -60.89 REMARK 500 6 LYS A 127 -161.94 44.77 REMARK 500 6 ARG A 132 -155.61 43.49 REMARK 500 6 CYS A 139 108.92 -45.05 REMARK 500 6 TYR A 140 12.24 -69.44 REMARK 500 REMARK 500 THIS ENTRY HAS 179 RAMACHANDRAN OUTLIERS. 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 8 G B 5 0.07 SIDE CHAIN 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 ZN A 187 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 147 NE2 REMARK 620 2 CYS A 142 SG 98.4 REMARK 620 3 CYS A 139 SG 108.1 111.1 REMARK 620 4 CYS A 152 SG 108.5 112.6 116.5 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 1 ZN A 188 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 164 SG REMARK 620 2 CYS A 161 SG 106.6 REMARK 620 3 HIS A 169 NE2 90.3 115.1 REMARK 620 4 CYS A 174 SG 119.1 113.0 111.0 REMARK 620 N 1 2 3 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 187 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 188 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2CQF RELATED DB: PDB REMARK 900 STRUCTURE OF LIN28 ZNFS FREE FORM REMARK 900 RELATED ID: 17883 RELATED DB: BMRB DBREF 2LI8 A 124 186 UNP Q9H9Z2 LN28A_HUMAN 124 186 DBREF 2LI8 B 1 7 PDB 2LI8 2LI8 1 7 SEQADV 2LI8 SER A 113 UNP Q9H9Z2 EXPRESSION TAG SEQADV 2LI8 SER A 114 UNP Q9H9Z2 EXPRESSION TAG SEQADV 2LI8 GLY A 115 UNP Q9H9Z2 EXPRESSION TAG SEQADV 2LI8 LEU A 116 UNP Q9H9Z2 EXPRESSION TAG SEQADV 2LI8 VAL A 117 UNP Q9H9Z2 EXPRESSION TAG SEQADV 2LI8 PRO A 118 UNP Q9H9Z2 EXPRESSION TAG SEQADV 2LI8 ARG A 119 UNP Q9H9Z2 EXPRESSION TAG SEQADV 2LI8 GLY A 120 UNP Q9H9Z2 EXPRESSION TAG SEQADV 2LI8 SER A 121 UNP Q9H9Z2 EXPRESSION TAG SEQADV 2LI8 HIS A 122 UNP Q9H9Z2 EXPRESSION TAG SEQADV 2LI8 MET A 123 UNP Q9H9Z2 EXPRESSION TAG SEQRES 1 A 74 SER SER GLY LEU VAL PRO ARG GLY SER HIS MET PRO LYS SEQRES 2 A 74 GLY LYS SER MET GLN LYS ARG ARG SER LYS GLY ASP ARG SEQRES 3 A 74 CYS TYR ASN CYS GLY GLY LEU ASP HIS HIS ALA LYS GLU SEQRES 4 A 74 CYS LYS LEU PRO PRO GLN PRO LYS LYS CYS HIS PHE CYS SEQRES 5 A 74 GLN SER ILE SER HIS MET VAL ALA SER CYS PRO LEU LYS SEQRES 6 A 74 ALA GLN GLN GLY PRO SER ALA GLN GLY SEQRES 1 B 7 A G G A G A U HET ZN A 187 1 HET ZN A 188 1 HETNAM ZN ZINC ION FORMUL 3 ZN 2(ZN 2+) HELIX 1 1 MET A 170 CYS A 174 5 5 HELIX 2 2 LEU A 176 GLN A 180 5 5 LINK NE2 HIS A 147 ZN ZN A 187 1555 1555 2.08 LINK SG CYS A 142 ZN ZN A 187 1555 1555 2.10 LINK SG CYS A 164 ZN ZN A 188 1555 1555 2.11 LINK SG CYS A 139 ZN ZN A 187 1555 1555 2.12 LINK SG CYS A 161 ZN ZN A 188 1555 1555 2.12 LINK SG CYS A 152 ZN ZN A 187 1555 1555 2.12 LINK NE2 HIS A 169 ZN ZN A 188 1555 1555 2.14 LINK SG CYS A 174 ZN ZN A 188 1555 1555 2.14 SITE 1 AC1 4 CYS A 139 CYS A 142 HIS A 147 CYS A 152 SITE 1 AC2 4 CYS A 161 CYS A 164 HIS A 169 CYS A 174 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