1ETB - Header Asymmetric Unit

HEADER TRANSPORT(THYROXINE) 12-MAY-93 1ETB

TITLE THE X-RAY CRYSTAL STRUCTURE REFINEMENTS OF NORMAL HUMAN TITLE 2 TRANSTHYRETIN AND THE AMYLOIDOGENIC VAL 30-->MET VARIANT TITLE 3 TO 1.7 ANGSTROMS RESOLUTION

COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRANSTHYRETIN; COMPND 3 CHAIN: 1, 2; COMPND 4 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 ORGAN: PLASMA

KEYWDS TRANSPORT(THYROXINE)

EXPDTA X-RAY DIFFRACTION

AUTHOR B.C.BRADEN,L.K.STEINRAUF,J.A.HAMILTON

REVDAT 3 24-FEB-09 1ETB 1 VERSN REVDAT 2 01-APR-03 1ETB 1 JRNL REVDAT 1 26-JAN-95 1ETB 0

JRNL AUTH J.A.HAMILTON,L.K.STEINRAUF,B.C.BRADEN,J.LIEPNIEKS, JRNL AUTH 2 M.D.BENSON,G.HOLMGREN,O.SANDGREN,L.STEEN JRNL TITL THE X-RAY CRYSTAL STRUCTURE REFINEMENTS OF NORMAL JRNL TITL 2 HUMAN TRANSTHYRETIN AND THE AMYLOIDOGENIC JRNL TITL 3 VAL-30-->MET VARIANT TO 1.7-A RESOLUTION. JRNL REF J.BIOL.CHEM. V. 268 2416 1993 JRNL REFN ISSN 0021-9258 JRNL PMID 8428915

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH L.K.STEINRAUF,J.A.HAMILTON,B.C.BRADEN,J.R.MURRELL, REMARK 1 AUTH 2 M.D.BENSON REMARK 1 TITL X-RAY CRYSTAL STRUCTURE OF THE ALA 109(RIGHT REMARK 1 TITL 2 ARROW)THR VARIANT OF HUMAN TRANSTHYRETIN WHICH REMARK 1 TITL 3 PRODUCES EUTHYROID HYPERTHYROXINEMIA REMARK 1 REF J.BIOL.CHEM. V. 268 2425 1993 REMARK 1 REFN ISSN 0021-9258 REMARK 1 REFERENCE 2 REMARK 1 AUTH J.A.HAMILTON,L.K.STEINRAUF,J.J.LIEPNIEKS, REMARK 1 AUTH 2 M.D.BENSON,G.HOLMGREN,O.SANDGREN,L.STEEN REMARK 1 TITL ALTERATION IN MOLECULAR STRUCTURE WHICH RESULTS IN REMARK 1 TITL 2 DISEASE: THE MET 30 VARIANT OF HUMAN PLASMA REMARK 1 TITL 3 TRANSTHYRETIN REMARK 1 REF BIOCHIM.BIOPHYS.ACTA V. 139 9 1992 REMARK 1 REFN ISSN 0006-3002

REMARK 2 REMARK 2 RESOLUTION. 1.70 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROLSQ REMARK 3 AUTHORS : KONNERT,HENDRICKSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 5.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : NULL REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : 0.163 REMARK 3 R VALUE (WORKING SET) : NULL REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1829 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 48 REMARK 3 SOLVENT ATOMS : 172 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 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.018 ; NULL REMARK 3 ANGLE DISTANCE (A) : NULL ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; 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 OTHER REFINEMENT REMARKS: OCCUPANCIES OF DISORDERED SIDE REMARK 3 CHAINS OR OF ATOMS WITH LESS THAN UNIT OCCUPANCY WERE SELECTED REMARK 3 TO FLATTEN THE FINAL DIFFERENCE FOURIER. ATOMS WITH REMARK 3 OCCUPANCIES OF .001 HAVE NO OBSERVABLE ELECTRON DENSITY. SOME REMARK 3 WATER MOLECULES WERE PLACED IN POSITIONS THAT PROBABLY REMARK 3 REPRESENT ALTERNATE CONFORMATIONS.

REMARK 4 REMARK 4 1ETB COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.

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 : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> 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 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.10 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.24 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 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+1/2,Y+1/2,-Z REMARK 290 4555 X+1/2,-Y+1/2,-Z 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 21.86000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 43.04500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 21.86000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 43.04500 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL

REMARK 300 REMARK 300 BIOMOLECULE: 1, 2 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 300 REMARK: REMARK 300 THE TRANSFORMATION PRESENTED ON *MTRIX* RECORDS BELOW WILL REMARK 300 YIELD APPROXIMATE COORDINATES FOR CHAIN 2 WHEN APPLIED TO REMARK 300 CHAIN 1.

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 TOTAL BURIED SURFACE AREA: 2530 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 11710 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -10.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: 1, 2 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 9630 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 18840 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -34.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: 1, 2 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 BIOMT1 2 -1.000000 0.000000 0.000000 43.72000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 86.09000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000

REMARK 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH 1 216 LIES ON A SPECIAL POSITION. REMARK 375 HOH 2 212 LIES ON A SPECIAL POSITION.

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 GLY 1 1 REMARK 465 PRO 1 2 REMARK 465 THR 1 3 REMARK 465 GLY 1 4 REMARK 465 THR 1 5 REMARK 465 GLY 1 6 REMARK 465 GLU 1 7 REMARK 465 SER 1 8 REMARK 465 GLU 1 127 REMARK 465 GLY 2 1 REMARK 465 PRO 2 2 REMARK 465 THR 2 3 REMARK 465 GLY 2 4 REMARK 465 THR 2 5 REMARK 465 GLY 2 6 REMARK 465 GLU 2 7 REMARK 465 SER 2 8 REMARK 465 LYS 2 126 REMARK 465 GLU 2 127

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 1 9 CG CD CE NZ REMARK 470 LYS 1 126 CG CD CE NZ REMARK 470 LYS 2 9 CG CD CE NZ

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 GLU 1 62 CA - CB - CG ANGL. DEV. = 21.9 DEGREES REMARK 500 ASP 1 74 CB - CG - OD1 ANGL. DEV. = 6.4 DEGREES REMARK 500 ARG 1 103 NE - CZ - NH1 ANGL. DEV. = 3.6 DEGREES REMARK 500 ARG 1 103 NE - CZ - NH2 ANGL. DEV. = -3.7 DEGREES REMARK 500 ARG 1 104 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 ARG 2 21 NE - CZ - NH1 ANGL. DEV. = 4.5 DEGREES REMARK 500 ASN 2 27 OD1 - CG - ND2 ANGL. DEV. = 13.9 DEGREES REMARK 500 ASN 2 27 CB - CG - OD1 ANGL. DEV. = -20.5 DEGREES REMARK 500 ASP 2 74 CB - CG - OD1 ANGL. DEV. = 5.7 DEGREES REMARK 500 ARG 2 103 NE - CZ - NH1 ANGL. DEV. = 4.0 DEGREES REMARK 500 ARG 2 104 NE - CZ - NH1 ANGL. DEV. = 4.6 DEGREES REMARK 500 ARG 2 104 NE - CZ - NH2 ANGL. DEV. = -3.4 DEGREES REMARK 500 TYR 2 116 CB - CG - CD2 ANGL. DEV. = -6.1 DEGREES REMARK 500 TYR 2 116 CB - CG - CD1 ANGL. DEV. = 5.0 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 SER 1 100 26.79 -140.28 REMARK 500 PRO 1 125 132.22 -25.90 REMARK 500 PHE 2 44 -54.55 -123.81 REMARK 500 PRO 2 102 159.59 -46.30 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 ARG 2 104 0.09 SIDE_CHAIN REMARK 500 REMARK 500 REMARK: NULL

REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH 1 153 DISTANCE = 6.42 ANGSTROMS REMARK 525 HOH 2 179 DISTANCE = 6.34 ANGSTROMS

REMARK 700 REMARK 700 SHEET REMARK 700 SHEET IDENTIFIERS ARE BASED ON ENTRY 2PAB (PREALBUMIN, REMARK 700 BLAKE ET AL.).

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AA REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: T4 BINDING SITE COMPOSED OF RESIDUES FROM REMARK 800 CHAIN 1 AND ITS 2-FOLD SYMMETRIC CHAIN. ONLY THE RESIDUES FROM REMARK 800 CHAIN 1 ARE LISTED HERE REMARK 800 SITE_IDENTIFIER: BB REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: T4 BINDING SITE COMPOSED OF RESIDUES FROM REMARK 800 CHAIN 2 AND ITS 2-FOLD SYMMETRIC CHAIN. ONLY THE RESIDUES FROM REMARK 800 CHAIN 1 ARE LISTED HERE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE T44 1 128 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE T44 2 129

DBREF 1ETB 1 1 127 UNP P02766 TTHY_HUMAN 21 147 DBREF 1ETB 2 1 127 UNP P02766 TTHY_HUMAN 21 147

SEQADV 1ETB THR 1 109 UNP P02766 ALA 129 CONFLICT SEQADV 1ETB THR 2 109 UNP P02766 ALA 129 CONFLICT

SEQRES 1 1 127 GLY PRO THR GLY THR GLY GLU SER LYS CYS PRO LEU MET SEQRES 2 1 127 VAL LYS VAL LEU ASP ALA VAL ARG GLY SER PRO ALA ILE SEQRES 3 1 127 ASN VAL ALA VAL HIS VAL PHE ARG LYS ALA ALA ASP ASP SEQRES 4 1 127 THR TRP GLU PRO PHE ALA SER GLY LYS THR SER GLU SER SEQRES 5 1 127 GLY GLU LEU HIS GLY LEU THR THR GLU GLU GLU PHE VAL SEQRES 6 1 127 GLU GLY ILE TYR LYS VAL GLU ILE ASP THR LYS SER TYR SEQRES 7 1 127 TRP LYS ALA LEU GLY ILE SER PRO PHE HIS GLU HIS ALA SEQRES 8 1 127 GLU VAL VAL PHE THR ALA ASN ASP SER GLY PRO ARG ARG SEQRES 9 1 127 TYR THR ILE ALA THR LEU LEU SER PRO TYR SER TYR SER SEQRES 10 1 127 THR THR ALA VAL VAL THR ASN PRO LYS GLU SEQRES 1 2 127 GLY PRO THR GLY THR GLY GLU SER LYS CYS PRO LEU MET SEQRES 2 2 127 VAL LYS VAL LEU ASP ALA VAL ARG GLY SER PRO ALA ILE SEQRES 3 2 127 ASN VAL ALA VAL HIS VAL PHE ARG LYS ALA ALA ASP ASP SEQRES 4 2 127 THR TRP GLU PRO PHE ALA SER GLY LYS THR SER GLU SER SEQRES 5 2 127 GLY GLU LEU HIS GLY LEU THR THR GLU GLU GLU PHE VAL SEQRES 6 2 127 GLU GLY ILE TYR LYS VAL GLU ILE ASP THR LYS SER TYR SEQRES 7 2 127 TRP LYS ALA LEU GLY ILE SER PRO PHE HIS GLU HIS ALA SEQRES 8 2 127 GLU VAL VAL PHE THR ALA ASN ASP SER GLY PRO ARG ARG SEQRES 9 2 127 TYR THR ILE ALA THR LEU LEU SER PRO TYR SER TYR SER SEQRES 10 2 127 THR THR ALA VAL VAL THR ASN PRO LYS GLU

HET T44 1 128 24 HET T44 2 129 24

HETNAM T44 3,5,3',5'-TETRAIODO-L-THYRONINE

FORMUL 3 T44 2(C15 H11 I4 N O4) FORMUL 5 HOH *172(H2 O)

HELIX 1 1HX THR 1 75 GLY 1 83 1 9 HELIX 2 2HX THR 2 75 GLY 2 83 1 9

SHEET 1 INT 8 GLY 1 53 HIS 1 56 0 SHEET 2 INT 8 PRO 1 11 ASP 1 18 -1 N VAL 1 14 O LEU 1 55 SHEET 3 INT 8 ARG 1 103 SER 1 112 1 N ILE 1 107 O MET 1 13 SHEET 4 INT 8 SER 1 115 THR 1 123 -1 N THR 1 119 O ALA 1 108 SHEET 5 INT 8 SER 2 115 THR 2 123 -1 N THR 2 118 O TYR 1 116 SHEET 6 INT 8 ARG 2 103 SER 2 112 -1 N ALA 2 108 O THR 2 119 SHEET 7 INT 8 PRO 2 11 ASP 2 18 1 N MET 2 13 O ILE 2 107 SHEET 8 INT 8 GLY 2 53 HIS 2 56 -1 N LEU 2 55 O VAL 2 14 SHEET 1 XIA 4 THR 1 40 GLU 1 42 0 SHEET 2 XIA 4 VAL 1 28 ALA 1 36 -1 N ARG 1 34 O GLU 1 42 SHEET 3 XIA 4 GLU 1 66 ASP 1 74 -1 N GLU 1 72 O HIS 1 31 SHEET 4 XIA 4 HIS 1 90 ALA 1 97 -1 N VAL 1 93 O VAL 1 71 SHEET 1 X2A 4 ALA 1 45 THR 1 49 0 SHEET 2 X2A 4 VAL 1 28 ALA 1 36 -1 N VAL 1 30 O GLY 1 47 SHEET 3 X2A 4 GLU 1 66 ASP 1 74 -1 N GLU 1 72 O HIS 1 31 SHEET 4 X2A 4 HIS 1 90 ALA 1 97 -1 N VAL 1 93 O VAL 1 71 SHEET 1 X1B 4 THR 2 40 GLU 2 42 0 SHEET 2 X1B 4 VAL 2 28 ALA 2 36 -1 N ARG 2 34 O GLU 2 42 SHEET 3 X1B 4 GLU 2 66 ASP 2 74 -1 N GLU 2 72 O HIS 2 31 SHEET 4 X1B 4 HIS 2 90 ALA 2 97 -1 N VAL 2 93 O VAL 2 71 SHEET 1 X2B 4 ALA 2 45 THR 2 49 0 SHEET 2 X2B 4 VAL 2 28 ALA 2 36 -1 N VAL 2 30 O GLY 2 47 SHEET 3 X2B 4 GLU 2 66 ASP 2 74 -1 N GLU 2 72 O HIS 2 31 SHEET 4 X2B 4 HIS 2 90 ALA 2 97 -1 N VAL 2 93 O VAL 2 71

LINK NZ LYS 2 15 C7 T44 2 129 1555 1555 1.73 LINK OE2 GLU 2 54 N8 T44 2 129 1555 1555 1.84 LINK OE2 GLU 2 54 C8 T44 2 129 1555 1555 1.32

SITE 1 AA 7 LYS 1 15 GLU 1 54 LEU 1 17 ALA 1 108 SITE 2 AA 7 THR 1 109 LEU 1 110 SER 1 117 SITE 1 BB 7 LYS 2 15 GLU 2 54 LEU 2 17 ALA 2 108 SITE 2 BB 7 THR 2 109 LEU 2 110 SER 2 117 SITE 1 AC1 8 MET 1 13 LYS 1 15 LEU 1 17 GLU 1 54 SITE 2 AC1 8 ALA 1 108 THR 1 109 LEU 1 110 HOH 1 215 SITE 1 AC2 7 LYS 2 15 LEU 2 17 GLU 2 54 ALA 2 108 SITE 2 AC2 7 THR 2 109 LEU 2 110 HOH 2 211

CRYST1 43.720 86.090 65.790 90.00 90.00 90.00 P 21 21 2 8

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 0.022873 0.000000 0.000000 0.00000

SCALE2 0.000000 0.011616 0.000000 0.00000

SCALE3 0.000000 0.000000 0.015200 0.00000

MTRIX1 1 -0.990400 0.138000 -0.004400 37.60100 1

MTRIX2 1 0.138000 0.990400 -0.002600 -2.39600 1

MTRIX3 1 0.003990 -0.003210 -0.999900 98.62600 1