HEADER TRANSPORT (THYROXINE,RETINOL) IN SERUM 25-AUG-76 1PAB OBSLTE 24-OCT-77 1PAB 2PAB COMPND MOL_ID: 1; COMPND 2 MOLECULE:; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1 KEYWDS TRANSPORT (THYROXINE,RETINOL) IN SERUM EXPDTA X-RAY DIFFRACTION AUTHOR C. C. F.BLAKE,S. J. OATLEY AND M. J.GEISOW REVDAT 1 1PAB 0 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. NULL ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : NULL REMARK 3 AUTHORS : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : NULL REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : NULL 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 : 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 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 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 : 1766 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 0 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 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 1PAB COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998 REMARK 5 REMARK 5 1PAB THIS COORDINATE SET IS DESIGNATED PA-3C BY THE AUTHOR. REMARK 5 1PAB REMARK 6 REMARK 6 1PAB RESIDUES 1-9, 124-128 OF BOTH CHAINS ARE ILL-DEFINED REMARK 6 IN THE 1PAB ISOMORPHOUS MAP AND ARE NOT INCLUDED. 1PAB REMARK 7 REMARK 7 1PAB THIS COORDINATE SET COMPRISES TWO CHAINS REPRESENTING REMARK 7 TWO 1PAB CHEMICALLY EQUIVALENT, BUT CRYSTALLOGRAPHICALLY REMARK 7 DISTINCT, 1PAB ENTITIES. THE OTHER HALF OF THE BIOLOGICALLY REMARK 7 ACTIVE 1PAB TETRAMER MAY BE GENERATED FROM THIS DIMER BY REMARK 7 APPLICATION 1PAB OF THE CRYSTALLOGRAPHIC DIAD PARALLEL TO Z REMARK 7 THROUGH THE 1PAB ORIGIN OF THIS COORDINATE SYSTEM, I. E. REMARK 7 XPRIME=-X, 1PAB YPRIME=-Y, ZPRIME=Z. 1PAB REMARK 8 REMARK 8 1PAB THE AXES OF THIS COORDINATES SYSTEM ARE ALIGNED WITH REMARK 8 THE 1PAB CRYSTALLOGRAPHIC AXES BUT THE ORIGIN IS DISPLACED REMARK 8 BY 1PAB A/2, B/2, C/4 AS GIVEN IN THE SCALE RECORDS BELOW. REMARK 8 1PAB REMARK 9 REMARK 9 1PAB CORRECTION. FIX MASTER RECORD TO SHOW CORRECT NUMBER REMARK 9 OF 1PAB FTNOTE RECORDS. 28-MAR-77. 1PAB REMARK 10 REMARK 10 1PAB CORRECTION. THIS ENTRY IS OBSOLETE. 14-FEB-84. 1PAB 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 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: 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 (%): 49.61 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.44 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 1/2-X,1/2+Y,-Z REMARK 290 4555 1/2+X,1/2-Y,-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 21.65533 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 -42.83022 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 21.65533 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 -42.83022 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT REMARK 300 WHICH CONSISTS OF 2 CHAIN(S). SEE REMARK 350 FOR REMARK 300 INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S). REMARK 350 REMARK 350 GENERATING THE BIOMOLECULE 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 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 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 REMARK 500 CD1 PHE B 64 NH1 ARG B 103 1.20 REMARK 500 CE1 PHE B 64 NH1 ARG B 103 1.29 REMARK 500 OD2 ASP B 18 OH TYR B 78 1.44 REMARK 500 CB GLU B 66 ND2 ASN B 98 1.57 REMARK 500 OD2 ASP B 18 CZ TYR B 78 1.59 REMARK 500 OE2 GLU B 66 OD1 ASN B 98 1.68 REMARK 500 CD GLU B 66 OD1 ASN B 98 1.78 REMARK 500 OD2 ASP B 18 CE2 TYR B 78 1.84 REMARK 500 OD1 ASP A 18 OH TYR A 78 1.87 REMARK 500 NH1 ARG A 34 CB ALA A 36 1.87 REMARK 500 CD1 PHE A 64 NH2 ARG A 103 1.93 REMARK 500 N VAL B 32 O ALA B 45 1.96 REMARK 500 CB ALA A 120 CZ PHE B 87 1.99 REMARK 500 CB ALA A 120 CE1 PHE B 87 2.08 REMARK 500 CD GLU B 66 CG ASN B 98 2.09 REMARK 500 CD2 LEU B 12 CD2 LEU B 58 2.10 REMARK 500 CG ASP A 18 OH TYR A 78 2.15 REMARK 500 CB LYS A 35 CZ3 TRP A 41 2.15 REMARK 500 CE1 PHE B 64 CZ ARG B 103 2.15 REMARK 500 O VAL A 94 CA HIS B 88 2.19 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 OG SER A 23 CG1 VAL A 121 2665 1.13 REMARK 500 OG SER B 23 CG1 VAL B 121 2665 1.28 REMARK 500 OG SER B 23 CB VAL B 121 2665 1.54 REMARK 500 N TYR A 114 O ALA B 19 2665 1.55 REMARK 500 OG SER B 23 CA VAL B 121 2665 1.57 REMARK 500 CB SER B 23 CG1 VAL B 121 2665 1.63 REMARK 500 OG SER A 23 CB VAL A 121 2665 1.65 REMARK 500 CD1 TYR A 114 CA GLY B 22 2665 1.78 REMARK 500 OG SER A 23 CG2 VAL A 121 2665 1.88 REMARK 500 O LEU A 82 OG SER B 85 1655 1.96 REMARK 500 CG PRO A 113 CA VAL B 20 2665 1.97 REMARK 500 CB SER A 23 CG1 VAL A 121 2665 1.98 REMARK 500 CB TYR A 114 O ALA B 19 2665 2.04 REMARK 500 CA TYR A 114 O ALA B 19 2665 2.06 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),F6.3) REMARK 500 REMARK 500 EXPECTED VALUES: ENGH AND HUBER, 1991 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 ARG A 21 NE ARG A 21 CZ 0.139 REMARK 500 ARG A 34 NE ARG A 34 CZ 0.138 REMARK 500 ARG A 103 NE ARG A 103 CZ 0.141 REMARK 500 ARG A 104 NE ARG A 104 CZ 0.142 REMARK 500 ARG B 21 NE ARG B 21 CZ 0.133 REMARK 500 ARG B 34 NE ARG B 34 CZ 0.141 REMARK 500 ARG B 103 NE ARG B 103 CZ 0.134 REMARK 500 ARG B 104 NE ARG B 104 CZ 0.141 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: ENGH AND HUBER, 1991 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ASP A 38 C - N - CA ANGL. DEV. = 19.5 DEGREES 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 M RES CSSEQI PSI PHI REMARK 500 ILE A 26 129.62 81.63 REMARK 500 THR A 40 -116.03 168.60 REMARK 500 PHE A 44 -109.47 95.83 REMARK 500 GLU A 61 -109.27 112.73 REMARK 500 VAL A 65 133.50 113.70 REMARK 500 ARG A 103 -173.16 136.86 REMARK 500 SER B 23 -133.13 172.52 REMARK 500 ALA B 37 -158.48 17.37 REMARK 500 THR B 40 -155.71 139.74 REMARK 500 PHE B 44 -91.93 99.06 REMARK 500 GLU B 61 -78.18 90.96 REMARK 500 ASN B 98 119.72 142.55 REMARK 500 SER B 100 85.47 113.28 REMARK 500 ARG B 103 -135.00 136.40 SEQRES 1 A 114 CYS PRO LEU MET VAL LYS VAL LEU ASP ALA VAL ARG GLY SEQRES 2 A 114 SER PRO ALA ILE ASN VAL ALA VAL HIS VAL PHE ARG LYS SEQRES 3 A 114 ALA ALA ASP ASP THR TRP GLU PRO PHE ALA SER GLY LYS SEQRES 4 A 114 THR SER GLU SER GLY GLU LEU HIS GLY LEU THR THR GLU SEQRES 5 A 114 GLU GLN PHE VAL GLU GLY ILE TYR LYS VAL GLU ILE ASP SEQRES 6 A 114 THR LYS SER TYR TRP LYS ALA LEU GLY ILE SER PRO PHE SEQRES 7 A 114 HIS GLU HIS ALA GLU VAL VAL PHE THR ALA ASN ASP SER SEQRES 8 A 114 GLY PRO ARG ARG TYR THR ILE ALA ALA LEU LEU SER PRO SEQRES 9 A 114 TYR SER TYR SER THR THR ALA VAL VAL GLU SEQRES 1 B 114 CYS PRO LEU MET VAL LYS VAL LEU ASP ALA VAL ARG GLY SEQRES 2 B 114 SER PRO ALA ILE ASN VAL ALA VAL HIS VAL PHE ARG LYS SEQRES 3 B 114 ALA ALA ASP ASP THR TRP GLU PRO PHE ALA SER GLY LYS SEQRES 4 B 114 THR SER GLU SER GLY GLU LEU HIS GLY LEU THR THR GLU SEQRES 5 B 114 GLU GLN PHE VAL GLU GLY ILE TYR LYS VAL GLU ILE ASP SEQRES 6 B 114 THR LYS SER TYR TRP LYS ALA LEU GLY ILE SER PRO PHE SEQRES 7 B 114 HIS GLU HIS ALA GLU VAL VAL PHE THR ALA ASN ASP SER SEQRES 8 B 114 GLY PRO ARG ARG TYR THR ILE ALA ALA LEU LEU SER PRO SEQRES 9 B 114 TYR SER TYR SER THR THR ALA VAL VAL GLU FTNOTE 1 RESIDUES 21-24 ARE IN ERROR BY ABOUT 1 ANGSTROM IN THE Y- FTNOTE 1 DIRECTION (I. E. ADD 1.0 TO GIVEN Y). HELIX 1 AA THR A 75 GLY A 83 1 9 HELIX 2 BA THR B 75 GLY B 83 1 9 SHEET 1 INA 4 GLY A 53 LEU A 55 0 SHEET 2 INA 4 PRO A 11 ALA A 19 -1 SHEET 3 INA 4 ARG A 104 SER A 112 1 SHEET 4 INA 4 SER A 115 GLU A 123 -1 SHEET 1 EXA 4 ALA A 45 THR A 49 0 SHEET 2 EXA 4 VAL A 28 LYS A 35 -1 SHEET 3 EXA 4 GLY A 67 THR A 75 -1 SHEET 4 EXA 4 GLU A 89 ALA A 97 -1 SHEET 1 INB 4 GLY B 53 LEU B 55 0 SHEET 2 INB 4 PRO B 11 ALA B 19 -1 SHEET 3 INB 4 ARG B 104 SER B 112 1 SHEET 4 INB 4 SER B 115 GLU B 123 -1 SHEET 1 EXB 4 ALA B 45 THR B 49 0 SHEET 2 EXB 4 VAL B 28 LYS B 35 -1 SHEET 3 EXB 4 GLY B 67 THR B 75 -1 SHEET 4 EXB 4 GLU B 89 ALA B 97 -1 CRYST1 43.310 85.660 65.890 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 0.023089 0.000000 0.000000 0.50000 SCALE2 0.000000 -0.011674 0.000000 0.50000 SCALE3 0.000000 0.000000 -0.015177 0.25000 MTRIX1 1 -0.987710 -0.156297 0.000000 0.00000 MTRIX2 1 -0.156297 0.987710 0.000000 0.00000 MTRIX3 1 0.000000 0.000000 -1.000000 0.00000