2O27 - Header Asymmetric Unit

HEADER CYTOKINE, SIGNALING PROTEIN 29-NOV-06 2O27

TITLE STRUCTURE OF A CLASS III RTK SIGNALING ASSEMBLY

COMPND MOL_ID: 1; COMPND 2 MOLECULE: KIT LIGAND; COMPND 3 CHAIN: A, B; COMPND 4 FRAGMENT: RESIDUES 28-166; COMPND 5 SYNONYM: C-KIT LIGAND, STEM CELL FACTOR, SCF, MAST CELL COMPND 6 GROWTH FACTOR, MGF, HEMATOPOIETIC GROWTH FACTOR KL, STEEL COMPND 7 FACTOR; COMPND 8 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: MUS MUSCULUS; SOURCE 3 ORGANISM_COMMON: HOUSE MOUSE; SOURCE 4 ORGANISM_TAXID: 10090; SOURCE 5 GENE: KITLG, KITL, MGF, SL, SLF; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 511693; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PGEX-4T-1

KEYWDS STEM CELL FACTOR, RECEPTOR TYROSINE KINASE, CLASS III, KEYWDS 2 RECEPTOR/LIGAND COMPLEX, GROWTH FACTOR, CYTOKINE, 4-HELIX KEYWDS 3 BUNDLE, SIGNALING PROTEIN

EXPDTA X-RAY DIFFRACTION

AUTHOR H.LIU,X.CHEN,P.FOCIA,X.HE

REVDAT 2 24-FEB-09 2O27 1 VERSN REVDAT 1 13-MAR-07 2O27 0

JRNL AUTH H.LIU,X.CHEN,P.J.FOCIA,X.HE JRNL TITL STRUCTURAL BASIS FOR STEM CELL FACTOR-KIT JRNL TITL 2 SIGNALING AND ACTIVATION OF CLASS III RECEPTOR JRNL TITL 3 TYROSINE KINASES. JRNL REF EMBO J. V. 26 891 2007 JRNL REFN ISSN 0261-4189 JRNL PMID 17255936 JRNL DOI 10.1038/SJ.EMBOJ.7601545

REMARK 1

REMARK 2 REMARK 2 RESOLUTION. 2.20 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES, PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.20 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 18.74 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 158204.800 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 95.2 REMARK 3 NUMBER OF REFLECTIONS : 12636 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 SET) : 0.242 REMARK 3 FREE R VALUE : 0.266 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 646 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.010 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.20 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.34 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 91.70 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1927 REMARK 3 BIN R VALUE (WORKING SET) : 0.2560 REMARK 3 BIN FREE R VALUE : 0.3020 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.10 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 104 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.030 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1987 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 480 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 31.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 56.80 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 1.91000 REMARK 3 B22 (A**2) : 1.91000 REMARK 3 B33 (A**2) : -3.82000 REMARK 3 B12 (A**2) : 1.01000 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) : 0.28 REMARK 3 ESD FROM SIGMAA (A) : 0.22 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.35 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.27 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.009 REMARK 3 BOND ANGLES (DEGREES) : 1.50 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.20 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.01 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED 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 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.31 REMARK 3 BSOL : 132.48 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : CARBOHYDRATE.PARAM REMARK 3 PARAMETER FILE 4 : ION.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 TOPOLOGY FILE 2 : NULL REMARK 3 TOPOLOGY FILE 3 : NULL REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 2O27 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 06-DEC-06. REMARK 100 THE RCSB ID CODE IS RCSB040593.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-DEC-05 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 5ID-B REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MAR CCD 165 MM REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 13625 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.200 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.9 REMARK 200 DATA REDUNDANCY : 13.000 REMARK 200 R MERGE (I) : 0.10000 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 43.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.20 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.26 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 13.00 REMARK 200 R MERGE FOR SHELL (I) : 0.49000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 5.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: MOLREP REMARK 200 STARTING MODEL: PDB ENTRY 2O26 REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 39.72 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.04 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.8M AMMONIUM SULFATE, 0.1M HEPES, REMARK 280 PH PH 8.0, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 65 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 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/6 REMARK 290 6555 X-Y,X,Z+5/6 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 165.62200 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 82.81100 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 124.21650 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 41.40550 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 207.02750 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 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: 1520 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 14490 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -5.0 KCAL/MOL 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 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 1940 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 14080 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -11.0 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 350 APPLY THE FOLLOWING TO CHAINS: B REMARK 350 BIOMT1 2 0.500000 0.866025 0.000000 0.00000 REMARK 350 BIOMT2 2 -0.866025 0.500000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 41.40550

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 3 REMARK 465 PRO A 7 REMARK 465 VAL A 8 REMARK 465 THR A 9 REMARK 465 ASP A 10 REMARK 465 LYS A 99 REMARK 465 GLU A 100 REMARK 465 MET A 130 REMARK 465 VAL A 131 REMARK 465 ALA A 132 REMARK 465 SER A 133 REMARK 465 ASP A 134 REMARK 465 THR A 135 REMARK 465 HIS A 142 REMARK 465 HIS A 143 REMARK 465 HIS A 144 REMARK 465 HIS A 145 REMARK 465 HIS A 146 REMARK 465 HIS A 147 REMARK 465 ILE B 3 REMARK 465 CYS B 4 REMARK 465 GLY B 5 REMARK 465 ASN B 6 REMARK 465 PRO B 7 REMARK 465 VAL B 8 REMARK 465 LYS B 99 REMARK 465 GLU B 100 REMARK 465 VAL B 131 REMARK 465 ALA B 132 REMARK 465 SER B 133 REMARK 465 ASP B 134 REMARK 465 THR B 135 REMARK 465 SER B 136 REMARK 465 HIS B 142 REMARK 465 HIS B 143 REMARK 465 HIS B 144 REMARK 465 HIS B 145 REMARK 465 HIS B 146 REMARK 465 HIS B 147

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 ARG B 104 O HOH B 314 2.18 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 VAL A 12 -9.09 -143.82 REMARK 500 ASP A 14 95.97 57.86 REMARK 500 LEU A 70 77.83 48.38 REMARK 500 PRO A 102 -70.17 -39.22 REMARK 500 ASP A 128 23.77 -148.13 REMARK 500 CYS A 138 89.61 -63.90 REMARK 500 ASP B 10 83.02 57.94 REMARK 500 VAL B 12 -132.92 -100.39 REMARK 500 LYS B 13 4.67 59.99 REMARK 500 GLU B 92 35.26 -77.28 REMARK 500 ASN B 93 -15.09 -161.68 REMARK 500 LYS B 96 141.78 -27.17 REMARK 500 PRO B 102 -85.01 -41.09 REMARK 500 PRO B 105 144.93 -8.37 REMARK 500 LYS B 127 1.75 -59.29 REMARK 500 ASP B 128 24.74 -146.15 REMARK 500 LEU B 140 -75.13 -114.71 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 A 178 DISTANCE = 5.80 ANGSTROMS REMARK 525 HOH A 182 DISTANCE = 7.57 ANGSTROMS REMARK 525 HOH A 189 DISTANCE = 5.04 ANGSTROMS REMARK 525 HOH B 203 DISTANCE = 5.96 ANGSTROMS REMARK 525 HOH A 207 DISTANCE = 6.33 ANGSTROMS REMARK 525 HOH A 224 DISTANCE = 8.58 ANGSTROMS REMARK 525 HOH A 226 DISTANCE = 5.23 ANGSTROMS REMARK 525 HOH A 228 DISTANCE = 10.89 ANGSTROMS REMARK 525 HOH A 234 DISTANCE = 8.63 ANGSTROMS REMARK 525 HOH A 240 DISTANCE = 6.15 ANGSTROMS REMARK 525 HOH B 245 DISTANCE = 6.60 ANGSTROMS REMARK 525 HOH B 247 DISTANCE = 6.28 ANGSTROMS REMARK 525 HOH A 249 DISTANCE = 5.75 ANGSTROMS REMARK 525 HOH A 258 DISTANCE = 10.85 ANGSTROMS REMARK 525 HOH B 262 DISTANCE = 5.21 ANGSTROMS REMARK 525 HOH A 264 DISTANCE = 8.74 ANGSTROMS REMARK 525 HOH A 283 DISTANCE = 7.13 ANGSTROMS REMARK 525 HOH A 293 DISTANCE = 8.32 ANGSTROMS REMARK 525 HOH A 300 DISTANCE = 6.56 ANGSTROMS REMARK 525 HOH A 306 DISTANCE = 6.88 ANGSTROMS REMARK 525 HOH B 308 DISTANCE = 5.93 ANGSTROMS REMARK 525 HOH B 344 DISTANCE = 5.24 ANGSTROMS REMARK 525 HOH B 355 DISTANCE = 8.26 ANGSTROMS REMARK 525 HOH A 363 DISTANCE = 7.63 ANGSTROMS REMARK 525 HOH B 378 DISTANCE = 7.55 ANGSTROMS

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2O26 RELATED DB: PDB REMARK 900 STRUCTURE OF A CLASS III RTK SIGNALING ASSEMBLY

DBREF 2O27 A 3 141 UNP P20826 SCF_MOUSE 28 166 DBREF 2O27 B 3 141 UNP P20826 SCF_MOUSE 28 166

SEQADV 2O27 HIS A 142 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS A 143 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS A 144 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS A 145 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS A 146 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS A 147 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS B 142 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS B 143 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS B 144 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS B 145 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS B 146 UNP P20826 EXPRESSION TAG SEQADV 2O27 HIS B 147 UNP P20826 EXPRESSION TAG

SEQRES 1 A 145 ILE CYS GLY ASN PRO VAL THR ASP ASN VAL LYS ASP ILE SEQRES 2 A 145 THR LYS LEU VAL ALA ASN LEU PRO ASN ASP TYR MET ILE SEQRES 3 A 145 THR LEU ASN TYR VAL ALA GLY MET ASP VAL LEU PRO SER SEQRES 4 A 145 HIS CYS TRP LEU ARG ASP MET VAL ILE GLN LEU SER LEU SEQRES 5 A 145 SER LEU THR THR LEU LEU ASP LYS PHE SER ASN ILE SER SEQRES 6 A 145 GLU GLY LEU SER ASN TYR SER ILE ILE ASP LYS LEU GLY SEQRES 7 A 145 LYS ILE VAL ASP ASP LEU VAL LEU CYS MET GLU GLU ASN SEQRES 8 A 145 ALA PRO LYS ASN ILE LYS GLU SER PRO LYS ARG PRO GLU SEQRES 9 A 145 THR ARG SER PHE THR PRO GLU GLU PHE PHE SER ILE PHE SEQRES 10 A 145 ASN ARG SER ILE ASP ALA PHE LYS ASP PHE MET VAL ALA SEQRES 11 A 145 SER ASP THR SER ASP CYS VAL LEU SER HIS HIS HIS HIS SEQRES 12 A 145 HIS HIS SEQRES 1 B 145 ILE CYS GLY ASN PRO VAL THR ASP ASN VAL LYS ASP ILE SEQRES 2 B 145 THR LYS LEU VAL ALA ASN LEU PRO ASN ASP TYR MET ILE SEQRES 3 B 145 THR LEU ASN TYR VAL ALA GLY MET ASP VAL LEU PRO SER SEQRES 4 B 145 HIS CYS TRP LEU ARG ASP MET VAL ILE GLN LEU SER LEU SEQRES 5 B 145 SER LEU THR THR LEU LEU ASP LYS PHE SER ASN ILE SER SEQRES 6 B 145 GLU GLY LEU SER ASN TYR SER ILE ILE ASP LYS LEU GLY SEQRES 7 B 145 LYS ILE VAL ASP ASP LEU VAL LEU CYS MET GLU GLU ASN SEQRES 8 B 145 ALA PRO LYS ASN ILE LYS GLU SER PRO LYS ARG PRO GLU SEQRES 9 B 145 THR ARG SER PHE THR PRO GLU GLU PHE PHE SER ILE PHE SEQRES 10 B 145 ASN ARG SER ILE ASP ALA PHE LYS ASP PHE MET VAL ALA SEQRES 11 B 145 SER ASP THR SER ASP CYS VAL LEU SER HIS HIS HIS HIS SEQRES 12 B 145 HIS HIS

FORMUL 3 HOH *480(H2 O)

HELIX 1 1 ASP A 14 ASN A 21 1 8 HELIX 2 2 PRO A 40 CYS A 43 5 4 HELIX 3 3 TRP A 44 ASP A 61 1 18 HELIX 4 4 SER A 71 ALA A 94 1 24 HELIX 5 5 THR A 111 LYS A 127 1 17 HELIX 6 6 ASP B 14 ASN B 21 1 8 HELIX 7 7 PRO B 40 CYS B 43 5 4 HELIX 8 8 TRP B 44 ASP B 61 1 18 HELIX 9 9 SER B 71 GLU B 92 1 22 HELIX 10 10 THR B 111 LYS B 127 1 17

SHEET 1 A 2 ILE A 28 TYR A 32 0 SHEET 2 A 2 GLU A 106 PHE A 110 -1 O PHE A 110 N ILE A 28 SHEET 1 B 2 ILE B 28 TYR B 32 0 SHEET 2 B 2 GLU B 106 PHE B 110 -1 O PHE B 110 N ILE B 28

SSBOND 1 CYS A 4 CYS A 89 1555 1555 2.03 SSBOND 2 CYS A 43 CYS A 138 1555 1555 2.03 SSBOND 3 CYS B 43 CYS B 138 1555 1555 2.02

CRYST1 43.270 43.270 248.433 90.00 90.00 120.00 P 65 12

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 0.023111 0.013343 0.000000 0.00000

SCALE2 0.000000 0.026686 0.000000 0.00000

SCALE3 0.000000 0.000000 0.004025 0.00000