HEADER SIGNALING PROTEIN 07-NOV-23 8UWR TITLE CRYSTAL STRUCTURE OF HUMAN ACVR1 (ALK2) KINASE IN COMPLEX WITH TITLE 2 COMPOUND 3 COMPND MOL_ID: 1; COMPND 2 MOLECULE: ACTIVIN RECEPTOR TYPE-1; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: ACTIVIN RECEPTOR TYPE I,ACTR-I,ACTIVIN RECEPTOR-LIKE KINASE COMPND 5 2,ALK-2,SERINE/THREONINE-PROTEIN KINASE RECEPTOR R1,SKR1,TGF-B COMPND 6 SUPERFAMILY RECEPTOR TYPE I,TSR-I; COMPND 7 EC: 2.7.11.30; COMPND 8 ENGINEERED: YES; COMPND 9 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: ACVR1, ACVRLK2; SOURCE 6 EXPRESSION_SYSTEM: SPODOPTERA FRUGIPERDA; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 7108 KEYWDS KINASE, INHIBITOR, TRANSFERASE, SIGNALING PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR J.L.KIM REVDAT 1 06-NOV-24 8UWR 0 JRNL AUTH A.J.DAVIS,N.BROOIJMANS,J.D.BRUBAKER,F.STEVISON, JRNL AUTH 2 T.P.LABRANCHE,F.ALBAYYA,P.FLEMING,B.L.HODOUS,J.L.KIM,S.KIM, JRNL AUTH 3 R.LOBBARDI,M.PALMER,M.P.SHEETS,J.VASSILIADIS,R.WANG, JRNL AUTH 4 B.D.WILLIAMS,D.WILSON,L.XU,X.J.ZHU,K.BOUCHARD,J.W.HUNTER, JRNL AUTH 5 C.GRAUL,E.GREENBLATT,A.HUSSEIN,M.LYON,J.RUSSO,R.STEWART, JRNL AUTH 6 M.DORSCH,T.J.GUZI,V.KADAMBI,C.LENGAUER,A.P.GARNER JRNL TITL AN ALK2 INHIBITOR, BLU-782, PREVENTS HETEROTOPIC JRNL TITL 2 OSSIFICATION IN A MOUSE MODEL OF FIBRODYSPLASIA OSSIFICANS JRNL TITL 3 PROGRESSIVA. JRNL REF SCI TRANSL MED V. 16 P8334 2024 JRNL REFN ESSN 1946-6242 JRNL PMID 38809966 JRNL DOI 10.1126/SCITRANSLMED.ABP8334 REMARK 2 REMARK 2 RESOLUTION. 2.04 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.8.0123 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.04 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 92.0 REMARK 3 NUMBER OF REFLECTIONS : 15959 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) : 0.214 REMARK 3 R VALUE (WORKING SET) : 0.211 REMARK 3 FREE R VALUE : 0.281 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.800 REMARK 3 FREE R VALUE TEST SET COUNT : 807 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.04 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.09 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1197 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 95.29 REMARK 3 BIN R VALUE (WORKING SET) : 0.3560 REMARK 3 BIN FREE R VALUE SET COUNT : 56 REMARK 3 BIN FREE R VALUE : 0.3490 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2389 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 62 REMARK 3 SOLVENT ATOMS : 163 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 39.80 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.03000 REMARK 3 B22 (A**2) : -0.09000 REMARK 3 B33 (A**2) : 0.12000 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.314 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.243 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.267 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 19.937 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.954 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.909 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2511 ; 0.012 ; 0.019 REMARK 3 BOND LENGTHS OTHERS (A): 2374 ; 0.002 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 3415 ; 1.610 ; 1.975 REMARK 3 BOND ANGLES OTHERS (DEGREES): 5458 ; 1.013 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 300 ; 6.795 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 112 ;36.366 ;23.482 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 435 ;16.546 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 19 ;18.297 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 380 ; 0.096 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2782 ; 0.007 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 584 ; 0.002 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 1192 ; 1.771 ; 2.104 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 1193 ; 1.770 ; 2.107 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1488 ; 2.901 ; 3.141 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): 1489 ; 2.901 ; 3.143 REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1318 ; 2.078 ; 2.360 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): 1319 ; 2.077 ; 2.362 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): 1923 ; 3.197 ; 3.469 REMARK 3 LONG RANGE B REFINED ATOMS (A**2): 3080 ; 8.302 ;18.020 REMARK 3 LONG RANGE B OTHER ATOMS (A**2): 3028 ; 8.183 ;17.627 REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 1 REMARK 3 REMARK 3 TLS GROUP : 1 REMARK 3 NUMBER OF COMPONENTS GROUP : 1 REMARK 3 COMPONENTS C SSSEQI TO C SSSEQI REMARK 3 RESIDUE RANGE : A 203 A 499 REMARK 3 ORIGIN FOR THE GROUP (A): -17.6290 -15.7750 -21.5850 REMARK 3 T TENSOR REMARK 3 T11: 0.0031 T22: 0.3419 REMARK 3 T33: 0.0127 T12: 0.0094 REMARK 3 T13: -0.0038 T23: 0.0165 REMARK 3 L TENSOR REMARK 3 L11: 2.0117 L22: 0.7857 REMARK 3 L33: 1.6938 L12: 0.0234 REMARK 3 L13: -0.6984 L23: 0.1403 REMARK 3 S TENSOR REMARK 3 S11: -0.0166 S12: 0.0323 S13: 0.1100 REMARK 3 S21: 0.0222 S22: 0.0085 S23: -0.0433 REMARK 3 S31: -0.0436 S32: 0.0152 S33: 0.0081 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS REMARK 4 REMARK 4 8UWR COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 08-NOV-23. REMARK 100 THE DEPOSITION ID IS D_1000278965. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-NOV-16 REMARK 200 TEMPERATURE (KELVIN) : 110 REMARK 200 PH : 5.6-7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : BRUKER AXS MICROSTAR REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : OSMIC MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MAR SCANNER 345 MM PLATE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 16767 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.040 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 93.0 REMARK 200 DATA REDUNDANCY : 2.500 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 4.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.04 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.15 REMARK 200 COMPLETENESS FOR SHELL (%) : 95.8 REMARK 200 DATA REDUNDANCY IN SHELL : 2.40 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.200 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 34.32 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.87 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.5 M AMMONIUM SULPHATE, 0.1 M SODIUM REMARK 280 CITRATE, PH 5.6, PH 7.5, VAPOR DIFFUSION, HANGING DROP, REMARK 280 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 25.80500 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 33.18000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 81.07000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 25.80500 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 33.18000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 81.07000 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 25.80500 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 33.18000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 81.07000 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 25.80500 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 33.18000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 81.07000 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 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 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 O3 SO4 A1004 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 MET A 177 REMARK 465 GLY A 178 REMARK 465 HIS A 179 REMARK 465 HIS A 180 REMARK 465 HIS A 181 REMARK 465 HIS A 182 REMARK 465 HIS A 183 REMARK 465 HIS A 184 REMARK 465 SER A 185 REMARK 465 SER A 186 REMARK 465 GLY A 187 REMARK 465 VAL A 188 REMARK 465 ASP A 189 REMARK 465 LEU A 190 REMARK 465 GLY A 191 REMARK 465 THR A 192 REMARK 465 GLU A 193 REMARK 465 ASN A 194 REMARK 465 LEU A 195 REMARK 465 TYR A 196 REMARK 465 PHE A 197 REMARK 465 GLN A 198 REMARK 465 SER A 199 REMARK 465 MET A 200 REMARK 465 GLN A 201 REMARK 465 ARG A 202 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 O HOH A 1101 O HOH A 1148 1.92 REMARK 500 REMARK 500 REMARK: NULL 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 O HOH A 1136 O HOH A 1136 2455 2.12 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 ARG A 258 120.38 -34.32 REMARK 500 HIS A 274 -122.98 69.13 REMARK 500 HIS A 284 153.44 -46.69 REMARK 500 ASP A 336 40.80 -167.12 REMARK 500 ASN A 347 0.31 -67.81 REMARK 500 ASP A 354 63.25 71.58 REMARK 500 ASN A 372 49.09 -150.04 REMARK 500 REMARK 500 REMARK: NULL DBREF 8UWR A 201 499 UNP Q04771 ACVR1_HUMAN 201 499 SEQADV 8UWR MET A 177 UNP Q04771 INITIATING METHIONINE SEQADV 8UWR GLY A 178 UNP Q04771 EXPRESSION TAG SEQADV 8UWR HIS A 179 UNP Q04771 EXPRESSION TAG SEQADV 8UWR HIS A 180 UNP Q04771 EXPRESSION TAG SEQADV 8UWR HIS A 181 UNP Q04771 EXPRESSION TAG SEQADV 8UWR HIS A 182 UNP Q04771 EXPRESSION TAG SEQADV 8UWR HIS A 183 UNP Q04771 EXPRESSION TAG SEQADV 8UWR HIS A 184 UNP Q04771 EXPRESSION TAG SEQADV 8UWR SER A 185 UNP Q04771 EXPRESSION TAG SEQADV 8UWR SER A 186 UNP Q04771 EXPRESSION TAG SEQADV 8UWR GLY A 187 UNP Q04771 EXPRESSION TAG SEQADV 8UWR VAL A 188 UNP Q04771 EXPRESSION TAG SEQADV 8UWR ASP A 189 UNP Q04771 EXPRESSION TAG SEQADV 8UWR LEU A 190 UNP Q04771 EXPRESSION TAG SEQADV 8UWR GLY A 191 UNP Q04771 EXPRESSION TAG SEQADV 8UWR THR A 192 UNP Q04771 EXPRESSION TAG SEQADV 8UWR GLU A 193 UNP Q04771 EXPRESSION TAG SEQADV 8UWR ASN A 194 UNP Q04771 EXPRESSION TAG SEQADV 8UWR LEU A 195 UNP Q04771 EXPRESSION TAG SEQADV 8UWR TYR A 196 UNP Q04771 EXPRESSION TAG SEQADV 8UWR PHE A 197 UNP Q04771 EXPRESSION TAG SEQADV 8UWR GLN A 198 UNP Q04771 EXPRESSION TAG SEQADV 8UWR SER A 199 UNP Q04771 EXPRESSION TAG SEQADV 8UWR MET A 200 UNP Q04771 EXPRESSION TAG SEQADV 8UWR ASP A 207 UNP Q04771 GLN 207 ENGINEERED MUTATION SEQRES 1 A 323 MET GLY HIS HIS HIS HIS HIS HIS SER SER GLY VAL ASP SEQRES 2 A 323 LEU GLY THR GLU ASN LEU TYR PHE GLN SER MET GLN ARG SEQRES 3 A 323 THR VAL ALA ARG ASP ILE THR LEU LEU GLU CYS VAL GLY SEQRES 4 A 323 LYS GLY ARG TYR GLY GLU VAL TRP ARG GLY SER TRP GLN SEQRES 5 A 323 GLY GLU ASN VAL ALA VAL LYS ILE PHE SER SER ARG ASP SEQRES 6 A 323 GLU LYS SER TRP PHE ARG GLU THR GLU LEU TYR ASN THR SEQRES 7 A 323 VAL MET LEU ARG HIS GLU ASN ILE LEU GLY PHE ILE ALA SEQRES 8 A 323 SER ASP MET THR SER ARG HIS SER SER THR GLN LEU TRP SEQRES 9 A 323 LEU ILE THR HIS TYR HIS GLU MET GLY SER LEU TYR ASP SEQRES 10 A 323 TYR LEU GLN LEU THR THR LEU ASP THR VAL SER CYS LEU SEQRES 11 A 323 ARG ILE VAL LEU SER ILE ALA SER GLY LEU ALA HIS LEU SEQRES 12 A 323 HIS ILE GLU ILE PHE GLY THR GLN GLY LYS PRO ALA ILE SEQRES 13 A 323 ALA HIS ARG ASP LEU LYS SER LYS ASN ILE LEU VAL LYS SEQRES 14 A 323 LYS ASN GLY GLN CYS CYS ILE ALA ASP LEU GLY LEU ALA SEQRES 15 A 323 VAL MET HIS SER GLN SER THR ASN GLN LEU ASP VAL GLY SEQRES 16 A 323 ASN ASN PRO ARG VAL GLY THR LYS ARG TYR MET ALA PRO SEQRES 17 A 323 GLU VAL LEU ASP GLU THR ILE GLN VAL ASP CYS PHE ASP SEQRES 18 A 323 SER TYR LYS ARG VAL ASP ILE TRP ALA PHE GLY LEU VAL SEQRES 19 A 323 LEU TRP GLU VAL ALA ARG ARG MET VAL SER ASN GLY ILE SEQRES 20 A 323 VAL GLU ASP TYR LYS PRO PRO PHE TYR ASP VAL VAL PRO SEQRES 21 A 323 ASN ASP PRO SER PHE GLU ASP MET ARG LYS VAL VAL CYS SEQRES 22 A 323 VAL ASP GLN GLN ARG PRO ASN ILE PRO ASN ARG TRP PHE SEQRES 23 A 323 SER ASP PRO THR LEU THR SER LEU ALA LYS LEU MET LYS SEQRES 24 A 323 GLU CYS TRP TYR GLN ASN PRO SER ALA ARG LEU THR ALA SEQRES 25 A 323 LEU ARG ILE LYS LYS THR LEU THR LYS ILE ASP HET SO4 A1001 5 HET SO4 A1002 5 HET SO4 A1003 5 HET SO4 A1004 5 HET SO4 A1005 5 HET SO4 A1006 5 HET XQX A1007 32 HETNAM SO4 SULFATE ION HETNAM XQX CYCLOPROPYL(4-{(8R)-6-[4-(PIPERAZIN-1-YL) HETNAM 2 XQX PHENYL]PYRROLO[1,2-B]PYRIDAZIN-4-YL}PIPERAZIN-1-YL) HETNAM 3 XQX METHANONE FORMUL 2 SO4 6(O4 S 2-) FORMUL 8 XQX C25 H30 N6 O FORMUL 9 HOH *163(H2 O) HELIX 1 AA1 THR A 203 ASP A 207 1 5 HELIX 2 AA2 ASP A 241 VAL A 255 1 15 HELIX 3 AA3 SER A 290 THR A 298 1 9 HELIX 4 AA4 ASP A 301 ILE A 321 1 21 HELIX 5 AA5 ALA A 383 ASP A 388 1 6 HELIX 6 AA6 CYS A 395 ARG A 416 1 22 HELIX 7 AA7 SER A 440 CYS A 449 1 10 HELIX 8 AA8 PRO A 458 SER A 463 5 6 HELIX 9 AA9 ASP A 464 GLU A 476 1 13 HELIX 10 AB1 ASN A 481 ARG A 485 5 5 HELIX 11 AB2 THR A 487 ILE A 498 1 12 SHEET 1 AA1 5 ILE A 208 GLY A 217 0 SHEET 2 AA1 5 GLY A 220 TRP A 227 -1 O ARG A 224 N GLU A 212 SHEET 3 AA1 5 GLU A 230 PHE A 237 -1 O ILE A 236 N GLU A 221 SHEET 4 AA1 5 THR A 277 HIS A 284 -1 O THR A 283 N ALA A 233 SHEET 5 AA1 5 PHE A 265 SER A 272 -1 N THR A 271 O GLN A 278 SHEET 1 AA2 3 ALA A 331 ALA A 333 0 SHEET 2 AA2 3 VAL A 359 SER A 362 -1 O VAL A 359 N ALA A 333 SHEET 3 AA2 3 GLN A 367 ASP A 369 -1 O ASP A 369 N MET A 360 SHEET 1 AA3 2 ILE A 342 VAL A 344 0 SHEET 2 AA3 2 CYS A 350 ILE A 352 -1 O CYS A 351 N LEU A 343 CRYST1 51.610 66.360 162.140 90.00 90.00 90.00 I 2 2 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 0.019376 0.000000 0.000000 0.00000 SCALE2 0.000000 0.015069 0.000000 0.00000 SCALE3 0.000000 0.000000 0.006168 0.00000