1T46 - Header Asymmetric Unit

HEADER TRANSFERASE ACTIVATOR 28-APR-04 1T46

TITLE STRUCTURAL BASIS FOR THE AUTOINHIBITION AND STI-571 TITLE 2 INHIBITION OF C-KIT TYROSINE KINASE

COMPND MOL_ID: 1; COMPND 2 MOLECULE: HOMO SAPIENS V-KIT HARDY-ZUCKERMAN 4 FELINE COMPND 3 SARCOMA VIRAL ONCOGENE HOMOLOG; COMPND 4 CHAIN: A; COMPND 5 FRAGMENT: TYROSINE KINASE; COMPND 6 EC: 2.7.1.112; COMPND 7 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: KIT; 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; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PSXB1

KEYWDS KINASE, STRUCTURE, INHIBITOR, STI-571, GLEEVEC, TRANSFERASE KEYWDS 2 ACTIVATOR

EXPDTA X-RAY DIFFRACTION

AUTHOR C.D.MOL,D.R.DOUGAN,T.R.SCHNEIDER,R.J.SKENE,M.L.KRAUS, AUTHOR 2 D.N.SCHEIBE,G.P.SNELL,H.ZOU,B.C.SANG,K.P.WILSON

REVDAT 3 24-FEB-09 1T46 1 VERSN REVDAT 2 03-AUG-04 1T46 1 JRNL REVDAT 1 15-JUN-04 1T46 0

JRNL AUTH C.D.MOL,D.R.DOUGAN,T.R.SCHNEIDER,R.J.SKENE, JRNL AUTH 2 M.L.KRAUS,D.N.SCHEIBE,G.P.SNELL,H.ZOU,B.C.SANG, JRNL AUTH 3 K.P.WILSON JRNL TITL STRUCTURAL BASIS FOR THE AUTOINHIBITION AND JRNL TITL 2 STI-571 INHIBITION OF C-KIT TYROSINE KINASE. JRNL REF J.BIOL.CHEM. V. 279 31655 2004 JRNL REFN ISSN 0021-9258 JRNL PMID 15123710 JRNL DOI 10.1074/JBC.M403319200

REMARK 1

REMARK 2 REMARK 2 RESOLUTION. 1.60 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.1.19 REMARK 3 AUTHORS : MURSHUDOV,VAGIN,DODSON REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.60 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.4 REMARK 3 NUMBER OF REFLECTIONS : 45483 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) : 0.190 REMARK 3 R VALUE (WORKING SET) : 0.188 REMARK 3 FREE R VALUE : 0.213 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 2406 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) : 1.60 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.64 REMARK 3 REFLECTION IN BIN (WORKING SET) : 2980 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.2450 REMARK 3 BIN FREE R VALUE SET COUNT : 159 REMARK 3 BIN FREE R VALUE : 0.2760 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2381 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 47 REMARK 3 SOLVENT ATOMS : 268 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 23.46 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 1.18000 REMARK 3 B22 (A**2) : 1.18000 REMARK 3 B33 (A**2) : -1.78000 REMARK 3 B12 (A**2) : 0.59000 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): 0.086 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.085 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.059 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.717 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.961 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.955 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2487 ; 0.007 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 3368 ; 1.085 ; 1.980 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 295 ; 5.050 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): NULL ; NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 366 ; 0.075 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1853 ; 0.004 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 1328 ; 0.193 ; 0.200 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): 252 ; 0.118 ; 0.200 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): 68 ; 0.165 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 21 ; 0.153 ; 0.200 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): 1485 ; 1.481 ; 2.000 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 2402 ; 2.471 ; 3.000 REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1002 ; 1.866 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 966 ; 2.825 ; 3.000 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 : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : BABINET MODEL WITH MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.40 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 1T46 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 17-MAY-04. REMARK 100 THE RCSB ID CODE IS RCSB022289.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 16-NOV-03 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 8.50 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 5.0.3 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.00 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 48006 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.600 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.4 REMARK 200 DATA REDUNDANCY : 4.600 REMARK 200 R MERGE (I) : 0.02800 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 19.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.60 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.66 REMARK 200 COMPLETENESS FOR SHELL (%) : 90.0 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.36700 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.600 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 50.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.40 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PHOSPHATE, PH 8.50, VAPOR REMARK 280 DIFFUSION, SITTING DROP, TEMPERATURE 275K

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 32 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+2/3 REMARK 290 3555 -X+Y,-X,Z+1/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+1/3 REMARK 290 6555 -X,-X+Y,-Z+2/3 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 85.25333 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 42.62667 REMARK 290 SMTRY1 4 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 0.866025 0.500000 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 0.00000 REMARK 290 SMTRY2 5 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 42.62667 REMARK 290 SMTRY1 6 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 85.25333 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 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 ILE A 690 REMARK 465 CYS A 691 REMARK 465 SER A 692 REMARK 465 LYS A 693 REMARK 465 THR A 694 REMARK 465 SER A 753 REMARK 465 PRO A 754 REMARK 465 ALA A 755 REMARK 465 ILE A 756 REMARK 465 MET A 757 REMARK 465 GLU A 758 REMARK 465 ASP A 759 REMARK 465 ASP A 760 REMARK 465 GLU A 761 REMARK 465 HIS A 934 REMARK 465 ILE A 935

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 ASP A 876 CB - CG - OD2 ANGL. DEV. = 5.5 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 ARG A 791 -17.12 82.13 REMARK 500 ASP A 792 45.98 -142.54 REMARK 500 ASN A 828 45.56 -106.12 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 A1111 DISTANCE = 5.74 ANGSTROMS REMARK 525 HOH A1202 DISTANCE = 5.07 ANGSTROMS

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 4 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 5 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE STI A 3

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1PKG RELATED DB: PDB REMARK 900 ACTIVE C-KIT REMARK 900 RELATED ID: 1T45 RELATED DB: PDB REMARK 900 AUTOINHIBITED C-KIT

REMARK 999 REMARK 999 SEQUENCE REMARK 999 THIS IS A RECEPTOR PROTEIN TYROSINE KINASE REMARK 999 WITH A "SPLIT" KINASE DOMAIN. THUS THE TWO REMARK 999 CONSERVED KINASE DOMAINS ARE INTERRUPTED BY REMARK 999 A LARGE NON-CONSERVED INSERTION CALLED THE REMARK 999 KINASE INSERTION DOMAIN (KID). IN THE REMARK 999 CONSTRUCT THE KID RESIDUES 694-753 WERE REMARK 999 DELETED AND REPLACED WITH TWO VECTOR REMARK 999 RESIDUES (THR-SER).

DBREF 1T46 A 565 693 UNP P10721 KIT_HUMAN 565 693 DBREF 1T46 A 754 935 GB 4557695 NP_000213 754 935

SEQADV 1T46 THR A 694 UNP P10721 SEE REMARK 999 SEQADV 1T46 SER A 753 UNP P10721 SEE REMARK 999

SEQRES 1 A 313 GLY ASN ASN TYR VAL TYR ILE ASP PRO THR GLN LEU PRO SEQRES 2 A 313 TYR ASP HIS LYS TRP GLU PHE PRO ARG ASN ARG LEU SER SEQRES 3 A 313 PHE GLY LYS THR LEU GLY ALA GLY ALA PHE GLY LYS VAL SEQRES 4 A 313 VAL GLU ALA THR ALA TYR GLY LEU ILE LYS SER ASP ALA SEQRES 5 A 313 ALA MET THR VAL ALA VAL LYS MET LEU LYS PRO SER ALA SEQRES 6 A 313 HIS LEU THR GLU ARG GLU ALA LEU MET SER GLU LEU LYS SEQRES 7 A 313 VAL LEU SER TYR LEU GLY ASN HIS MET ASN ILE VAL ASN SEQRES 8 A 313 LEU LEU GLY ALA CYS THR ILE GLY GLY PRO THR LEU VAL SEQRES 9 A 313 ILE THR GLU TYR CYS CYS TYR GLY ASP LEU LEU ASN PHE SEQRES 10 A 313 LEU ARG ARG LYS ARG ASP SER PHE ILE CYS SER LYS THR SEQRES 11 A 313 SER PRO ALA ILE MET GLU ASP ASP GLU LEU ALA LEU ASP SEQRES 12 A 313 LEU GLU ASP LEU LEU SER PHE SER TYR GLN VAL ALA LYS SEQRES 13 A 313 GLY MET ALA PHE LEU ALA SER LYS ASN CYS ILE HIS ARG SEQRES 14 A 313 ASP LEU ALA ALA ARG ASN ILE LEU LEU THR HIS GLY ARG SEQRES 15 A 313 ILE THR LYS ILE CYS ASP PHE GLY LEU ALA ARG ASP ILE SEQRES 16 A 313 LYS ASN ASP SER ASN TYR VAL VAL LYS GLY ASN ALA ARG SEQRES 17 A 313 LEU PRO VAL LYS TRP MET ALA PRO GLU SER ILE PHE ASN SEQRES 18 A 313 CYS VAL TYR THR PHE GLU SER ASP VAL TRP SER TYR GLY SEQRES 19 A 313 ILE PHE LEU TRP GLU LEU PHE SER LEU GLY SER SER PRO SEQRES 20 A 313 TYR PRO GLY MET PRO VAL ASP SER LYS PHE TYR LYS MET SEQRES 21 A 313 ILE LYS GLU GLY PHE ARG MET LEU SER PRO GLU HIS ALA SEQRES 22 A 313 PRO ALA GLU MET TYR ASP ILE MET LYS THR CYS TRP ASP SEQRES 23 A 313 ALA ASP PRO LEU LYS ARG PRO THR PHE LYS GLN ILE VAL SEQRES 24 A 313 GLN LEU ILE GLU LYS GLN ILE SER GLU SER THR ASN HIS SEQRES 25 A 313 ILE

HET PO4 A 4 5 HET PO4 A 5 5 HET STI A 3 37

HETNAM PO4 PHOSPHATE ION HETNAM STI 4-(4-METHYL-PIPERAZIN-1-YLMETHYL)-N-[4-METHYL-3-(4- HETNAM 2 STI PYRIDIN-3-YL-PYRIMIDIN-2-YLAMINO)-PHENYL]-BENZAMIDE

HETSYN STI STI-571;IMATINIB

FORMUL 2 PO4 2(O4 P 3-) FORMUL 4 STI C29 H31 N7 O FORMUL 5 HOH *268(H2 O)

HELIX 1 1 ASP A 579 GLU A 583 5 5 HELIX 2 2 PRO A 585 ASN A 587 5 3 HELIX 3 3 HIS A 630 GLY A 648 1 19 HELIX 4 4 LEU A 678 LYS A 685 1 8 HELIX 5 5 ASP A 765 LYS A 786 1 22 HELIX 6 6 ALA A 794 ARG A 796 5 3 HELIX 7 7 PHE A 811 ARG A 815 5 5 HELIX 8 8 PRO A 832 MET A 836 5 5 HELIX 9 9 ALA A 837 CYS A 844 1 8 HELIX 10 10 THR A 847 SER A 864 1 18 HELIX 11 11 ASP A 876 GLY A 886 1 11 HELIX 12 12 PRO A 896 TRP A 907 1 12 HELIX 13 13 ASP A 910 ARG A 914 5 5 HELIX 14 14 THR A 916 SER A 931 1 16

SHEET 1 A 5 LEU A 589 ALA A 597 0 SHEET 2 A 5 GLY A 601 TYR A 609 -1 O GLU A 605 N GLY A 592 SHEET 3 A 5 ALA A 617 LEU A 625 -1 O MET A 618 N ALA A 608 SHEET 4 A 5 LEU A 667 GLU A 671 -1 O VAL A 668 N LYS A 623 SHEET 5 A 5 LEU A 656 CYS A 660 -1 N LEU A 657 O ILE A 669 SHEET 1 B 3 GLY A 676 ASP A 677 0 SHEET 2 B 3 ILE A 798 THR A 801 -1 O LEU A 800 N GLY A 676 SHEET 3 B 3 ILE A 805 ILE A 808 -1 O LYS A 807 N LEU A 799 SHEET 1 C 2 VAL A 824 VAL A 825 0 SHEET 2 C 2 ARG A 830 LEU A 831 -1 O LEU A 831 N VAL A 824

SITE 1 AC1 6 LYS A 642 TYR A 675 HIS A 802 GLY A 803 SITE 2 AC1 6 LYS A 913 HOH A1189 SITE 1 AC2 7 THR A 619 TYR A 672 CYS A 674 HIS A 802 SITE 2 AC2 7 HOH A 997 HOH A1011 HOH A1188 SITE 1 AC3 17 ALA A 621 LYS A 623 GLU A 640 LEU A 644 SITE 2 AC3 17 VAL A 654 VAL A 668 THR A 670 TYR A 672 SITE 3 AC3 17 CYS A 673 CYS A 788 ILE A 789 HIS A 790 SITE 4 AC3 17 LEU A 799 CYS A 809 ASP A 810 PHE A 811 SITE 5 AC3 17 HOH A1105

CRYST1 70.089 70.089 127.880 90.00 90.00 120.00 P 32 2 1 6

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 0.014268 0.008237 0.000000 0.00000

SCALE2 0.000000 0.016475 0.000000 0.00000

SCALE3 0.000000 0.000000 0.007820 0.00000