HEADER TRANSFERASE/TRANSFERASE INHIBITOR 11-FEB-19 6NY4 TITLE CRYSTAL STRUCTURE OF JAK3 KINASE DOMAIN IN COMPLEX WITH A TITLE 2 PYRROLOPYRIDAZINE CARBOXAMIDE INHIBITOR COMPND MOL_ID: 1; COMPND 2 MOLECULE: TYROSINE-PROTEIN KINASE JAK3; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: KINASE DOMAIN (UNP RESIDUES 810-1100); COMPND 5 SYNONYM: JANUS KINASE 3, JAK-3, LEUKOCYTE JANUS KINASE, L-JAK; COMPND 6 EC: 2.7.10.2; COMPND 7 ENGINEERED: YES; COMPND 8 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: JAK3; SOURCE 6 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 7 EXPRESSION_SYSTEM_COMMON: FALL ARMYWORM; SOURCE 8 EXPRESSION_SYSTEM_TAXID: 7108; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: BACULOVIRUS KEYWDS TRANSFERASE-TRANSFERASE INHIBITOR COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR J.S.SACK REVDAT 2 13-MAR-24 6NY4 1 REMARK REVDAT 1 22-MAY-19 6NY4 0 JRNL AUTH S.H.SPERGEL,M.E.MERTZMAN,J.KEMPSON,J.GUO,S.STACHURA,L.HAQUE, JRNL AUTH 2 J.S.LIPPY,R.F.ZHANG,M.GALELLA,S.PITT,G.SHEN,A.FURA, JRNL AUTH 3 K.GILLOOLY,K.W.MCINTYRE,V.TANG,J.TOKARSKI,J.S.SACK,J.KHAN, JRNL AUTH 4 P.H.CARTER,J.C.BARRISH,S.G.NADLER,L.M.SALTER-CID, JRNL AUTH 5 G.L.SCHIEVEN,S.T.WROBLESKI,W.J.PITTS JRNL TITL DISCOVERY OF A JAK1/3 INHIBITOR AND USE OF A PRODRUG TO JRNL TITL 2 DEMONSTRATE EFFICACY IN A MODEL OF RHEUMATOID ARTHRITIS. JRNL REF ACS MED.CHEM.LETT. V. 10 306 2019 JRNL REFN ISSN 1948-5875 JRNL PMID 30891131 JRNL DOI 10.1021/ACSMEDCHEMLETT.8B00508 REMARK 2 REMARK 2 RESOLUTION. 2.33 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : BUSTER 2.11.7 REMARK 3 AUTHORS : BRICOGNE,BLANC,BRANDL,FLENSBURG,KELLER, REMARK 3 : PACIOREK,ROVERSI,SHARFF,SMART,VONRHEIN, REMARK 3 : WOMACK,MATTHEWS,TEN EYCK,TRONRUD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.33 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 37.95 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.2 REMARK 3 NUMBER OF REFLECTIONS : 13857 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 + TEST SET) : 0.216 REMARK 3 R VALUE (WORKING SET) : 0.215 REMARK 3 FREE R VALUE : 0.241 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.950 REMARK 3 FREE R VALUE TEST SET COUNT : 686 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 : 34 REMARK 3 BIN RESOLUTION RANGE HIGH (ANGSTROMS) : 2.33 REMARK 3 BIN RESOLUTION RANGE LOW (ANGSTROMS) : 2.35 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 81.76 REMARK 3 REFLECTIONS IN BIN (WORKING + TEST SET) : 408 REMARK 3 BIN R VALUE (WORKING + TEST SET) : 0.2363 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 388 REMARK 3 BIN R VALUE (WORKING SET) : 0.2319 REMARK 3 BIN FREE R VALUE : 0.3198 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.90 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 : 2115 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 25 REMARK 3 SOLVENT ATOMS : 49 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 54.95 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 56.28 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -13.36940 REMARK 3 B22 (A**2) : 9.91060 REMARK 3 B33 (A**2) : 3.45880 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.300 REMARK 3 DPI (BLOW EQ-10) BASED ON R VALUE (A) : 0.340 REMARK 3 DPI (BLOW EQ-9) BASED ON FREE R VALUE (A) : 0.223 REMARK 3 DPI (CRUICKSHANK) BASED ON R VALUE (A) : 0.328 REMARK 3 DPI (CRUICKSHANK) BASED ON FREE R VALUE (A) : 0.223 REMARK 3 REMARK 3 REFERENCES: BLOW, D. (2002) ACTA CRYST D58, 792-797 REMARK 3 CRUICKSHANK, D.W.J. (1999) ACTA CRYST D55, 583-601 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.920 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.919 REMARK 3 REMARK 3 NUMBER OF GEOMETRIC FUNCTION TERMS DEFINED : 15 REMARK 3 TERM COUNT WEIGHT FUNCTION. REMARK 3 BOND LENGTHS : 2192 ; 2.000 ; HARMONIC REMARK 3 BOND ANGLES : 2981 ; 2.000 ; HARMONIC REMARK 3 TORSION ANGLES : 722 ; 2.000 ; SINUSOIDAL REMARK 3 TRIGONAL CARBON PLANES : NULL ; NULL ; NULL REMARK 3 GENERAL PLANES : 391 ; 5.000 ; HARMONIC REMARK 3 ISOTROPIC THERMAL FACTORS : 2192 ; 20.000 ; HARMONIC REMARK 3 BAD NON-BONDED CONTACTS : NULL ; NULL ; NULL REMARK 3 IMPROPER TORSIONS : NULL ; NULL ; NULL REMARK 3 PSEUDOROTATION ANGLES : NULL ; NULL ; NULL REMARK 3 CHIRAL IMPROPER TORSION : 275 ; 5.000 ; SEMIHARMONIC REMARK 3 SUM OF OCCUPANCIES : NULL ; NULL ; NULL REMARK 3 UTILITY DISTANCES : NULL ; NULL ; NULL REMARK 3 UTILITY ANGLES : NULL ; NULL ; NULL REMARK 3 UTILITY TORSION : NULL ; NULL ; NULL REMARK 3 IDEAL-DIST CONTACT TERM : 2532 ; 4.000 ; SEMIHARMONIC REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.06 REMARK 3 PEPTIDE OMEGA TORSION ANGLES (DEGREES) : 2.98 REMARK 3 OTHER TORSION ANGLES (DEGREES) : 16.55 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 6NY4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-FEB-19. REMARK 100 THE DEPOSITION ID IS D_1000239657. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-SEP-11 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.8 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : CLSI REMARK 200 BEAMLINE : 08ID-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9800 REMARK 200 MONOCHROMATOR : DOUBLE CRYSTAL SI(111) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : RAYONIX MX-300 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : AIMLESS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 17298 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.120 REMARK 200 RESOLUTION RANGE LOW (A) : 87.750 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 94.6 REMARK 200 DATA REDUNDANCY : 5.900 REMARK 200 R MERGE (I) : 0.05100 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 19.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.12 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.23 REMARK 200 COMPLETENESS FOR SHELL (%) : 96.4 REMARK 200 DATA REDUNDANCY IN SHELL : 5.90 REMARK 200 R MERGE FOR SHELL (I) : 0.57900 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.400 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH 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 (%): 48.15 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.37 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 30% PEG3350, 200 MM MAGNESIUM REMARK 280 CHLORIDE, 100 MM BIS-TRIS, PH 5.8, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 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 23.47500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 43.89500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 37.76500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 43.89500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 23.47500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 37.76500 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 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 0 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 13100 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: 0.0 KCAL/MOL 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 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 A 808 REMARK 465 PRO A 809 REMARK 465 ALA A 810 REMARK 465 SER A 811 REMARK 465 GLN A 812 REMARK 465 ASP A 813 REMARK 465 PRO A 814 REMARK 465 GLY A 894 REMARK 465 ARG A 895 REMARK 465 GLN A 896 REMARK 465 SER A 897 REMARK 465 ARG A 984 REMARK 465 GLU A 985 REMARK 465 PRO A 986 REMARK 465 GLY A 987 REMARK 465 SER A 1100 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 THR A 815 OG1 CG2 REMARK 470 GLU A 818 CG CD OE1 OE2 REMARK 470 LYS A 823 CG CD CE NZ REMARK 470 ASN A 832 CG OD1 ND2 REMARK 470 PHE A 833 CG CD1 CD2 CE1 CE2 CZ REMARK 470 GLN A 856 CG CD OE1 NE2 REMARK 470 GLN A 858 CG CD OE1 NE2 REMARK 470 HIS A 859 CG ND1 CD2 CE1 NE2 REMARK 470 ASP A 863 CG OD1 OD2 REMARK 470 GLN A 864 CG CD OE1 NE2 REMARK 470 GLN A 865 CG CD OE1 NE2 REMARK 470 ARG A 866 CG CD NE CZ NH1 NH2 REMARK 470 ARG A 870 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 885 CD CE NZ REMARK 470 TYR A 891 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 LYS A 935 CG CD CE NZ REMARK 470 LYS A 972 CG CD CE NZ REMARK 470 LYS A1026 CG CD CE NZ REMARK 470 GLU A1041 CG CD OE1 OE2 REMARK 470 ARG A1042 CG CD NE CZ NH1 NH2 REMARK 470 ARG A1049 CG CD NE CZ NH1 NH2 REMARK 470 GLU A1052 CG CD OE1 OE2 REMARK 470 GLU A1055 CG CD OE1 OE2 REMARK 470 GLN A1083 CG CD OE1 NE2 REMARK 470 MET A1097 CG SD CE 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 PHE A 833 -45.33 66.39 REMARK 500 ASP A 842 71.06 -117.11 REMARK 500 PRO A 862 50.59 -97.59 REMARK 500 ASP A 863 -36.04 -155.58 REMARK 500 ARG A 948 -6.14 70.71 REMARK 500 ASP A 967 85.44 50.15 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 Z3A A 4000 DBREF 6NY4 A 810 1100 UNP P52333 JAK3_HUMAN 810 1100 SEQADV 6NY4 GLY A 808 UNP P52333 EXPRESSION TAG SEQADV 6NY4 PRO A 809 UNP P52333 EXPRESSION TAG SEQADV 6NY4 SER A 811 UNP P52333 CYS 811 ENGINEERED MUTATION SEQADV 6NY4 SER A 1040 UNP P52333 CYS 1040 ENGINEERED MUTATION SEQADV 6NY4 SER A 1048 UNP P52333 CYS 1048 ENGINEERED MUTATION SEQRES 1 A 293 GLY PRO ALA SER GLN ASP PRO THR ILE PHE GLU GLU ARG SEQRES 2 A 293 HIS LEU LYS TYR ILE SER GLN LEU GLY LYS GLY ASN PHE SEQRES 3 A 293 GLY SER VAL GLU LEU CYS ARG TYR ASP PRO LEU GLY ASP SEQRES 4 A 293 ASN THR GLY ALA LEU VAL ALA VAL LYS GLN LEU GLN HIS SEQRES 5 A 293 SER GLY PRO ASP GLN GLN ARG ASP PHE GLN ARG GLU ILE SEQRES 6 A 293 GLN ILE LEU LYS ALA LEU HIS SER ASP PHE ILE VAL LYS SEQRES 7 A 293 TYR ARG GLY VAL SER TYR GLY PRO GLY ARG GLN SER LEU SEQRES 8 A 293 ARG LEU VAL MET GLU TYR LEU PRO SER GLY CYS LEU ARG SEQRES 9 A 293 ASP PHE LEU GLN ARG HIS ARG ALA ARG LEU ASP ALA SER SEQRES 10 A 293 ARG LEU LEU LEU TYR SER SER GLN ILE CYS LYS GLY MET SEQRES 11 A 293 GLU TYR LEU GLY SER ARG ARG CYS VAL HIS ARG ASP LEU SEQRES 12 A 293 ALA ALA ARG ASN ILE LEU VAL GLU SER GLU ALA HIS VAL SEQRES 13 A 293 LYS ILE ALA ASP PHE GLY LEU ALA LYS LEU LEU PRO LEU SEQRES 14 A 293 ASP LYS ASP TYR TYR VAL VAL ARG GLU PRO GLY GLN SER SEQRES 15 A 293 PRO ILE PHE TRP TYR ALA PRO GLU SER LEU SER ASP ASN SEQRES 16 A 293 ILE PHE SER ARG GLN SER ASP VAL TRP SER PHE GLY VAL SEQRES 17 A 293 VAL LEU TYR GLU LEU PHE THR TYR CYS ASP LYS SER CYS SEQRES 18 A 293 SER PRO SER ALA GLU PHE LEU ARG MET MET GLY SER GLU SEQRES 19 A 293 ARG ASP VAL PRO ALA LEU SER ARG LEU LEU GLU LEU LEU SEQRES 20 A 293 GLU GLU GLY GLN ARG LEU PRO ALA PRO PRO ALA CYS PRO SEQRES 21 A 293 ALA GLU VAL HIS GLU LEU MET LYS LEU CYS TRP ALA PRO SEQRES 22 A 293 SER PRO GLN ASP ARG PRO SER PHE SER ALA LEU GLY PRO SEQRES 23 A 293 GLN LEU ASP MET LEU TRP SER HET Z3A A4000 25 HETNAM Z3A 4-{[(2R,3R)-1,3-DIHYDROXYBUTAN-2-YL]AMINO}-6- HETNAM 2 Z3A PHENYLPYRROLO[1,2-B]PYRIDAZINE-3-CARBOXAMIDE FORMUL 2 Z3A C18 H20 N4 O3 FORMUL 3 HOH *49(H2 O) HELIX 1 AA1 ASP A 863 ALA A 877 1 15 HELIX 2 AA2 CYS A 909 HIS A 917 1 9 HELIX 3 AA3 ARG A 918 LEU A 921 5 4 HELIX 4 AA4 ASP A 922 ARG A 943 1 22 HELIX 5 AA5 ALA A 951 ARG A 953 5 3 HELIX 6 AA6 PRO A 990 TYR A 994 5 5 HELIX 7 AA7 ALA A 995 ASN A 1002 1 8 HELIX 8 AA8 ARG A 1006 THR A 1022 1 17 HELIX 9 AA9 SER A 1029 GLY A 1039 1 11 HELIX 10 AB1 PRO A 1045 GLU A 1056 1 12 HELIX 11 AB2 PRO A 1067 TRP A 1078 1 12 HELIX 12 AB3 SER A 1081 ARG A 1085 5 5 HELIX 13 AB4 SER A 1087 TRP A 1099 1 13 SHEET 1 AA1 6 ILE A 816 GLU A 818 0 SHEET 2 AA1 6 TYR A 886 TYR A 891 1 O TYR A 891 N PHE A 817 SHEET 3 AA1 6 LEU A 900 GLU A 903 -1 O VAL A 901 N GLY A 888 SHEET 4 AA1 6 LEU A 851 LEU A 857 -1 N LYS A 855 O LEU A 900 SHEET 5 AA1 6 GLY A 834 TYR A 841 -1 N CYS A 839 O VAL A 852 SHEET 6 AA1 6 LEU A 822 GLN A 827 -1 N LYS A 823 O ARG A 840 SHEET 1 AA2 2 CYS A 945 VAL A 946 0 SHEET 2 AA2 2 LYS A 972 LEU A 973 -1 O LYS A 972 N VAL A 946 SHEET 1 AA3 2 ILE A 955 SER A 959 0 SHEET 2 AA3 2 HIS A 962 ILE A 965 -1 O LYS A 964 N LEU A 956 SHEET 1 AA4 2 TYR A 980 VAL A 982 0 SHEET 2 AA4 2 ILE A1003 SER A1005 -1 O PHE A1004 N TYR A 981 SITE 1 AC1 11 LEU A 828 GLY A 829 ALA A 853 VAL A 884 SITE 2 AC1 11 MET A 902 GLU A 903 TYR A 904 LEU A 905 SITE 3 AC1 11 PRO A 906 GLY A 908 LEU A 956 CRYST1 46.950 75.530 87.790 90.00 90.00 90.00 P 21 21 21 4 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 0.021299 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013240 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011391 0.00000