HEADER IMMUNE SYSTEM 09-FEB-20 6Y0M TITLE CRYSTAL STRUCTURE OF HUMAN CD23 LECTIN DOMAIN N225D, K229E, S252N, TITLE 2 T251N MUTANT COMPND MOL_ID: 1; COMPND 2 MOLECULE: LOW AFFINITY IMMUNOGLOBULIN EPSILON FC RECEPTOR MEMBRANE- COMPND 3 BOUND FORM; COMPND 4 CHAIN: A; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES; COMPND 7 OTHER_DETAILS: MUTATIONS: N225D, K229E, S252N, T251N SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: FCER2, CD23A, CLEC4J, FCE2, IGEBF; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS ANTIBODY RECEPTOR, C-TYPE LECTIN, CALCIUM BINDING PROTEIN, IGE, KEYWDS 2 IMMUNOGLOBULIN E, CD23, IMMUNE SYSTEM EXPDTA X-RAY DIFFRACTION AUTHOR V.F.ILKOW,A.M.DAVIES,B.J.SUTTON,J.M.MCDONNELL REVDAT 5 24-JAN-24 6Y0M 1 REMARK REVDAT 4 14-JUL-21 6Y0M 1 JRNL REVDAT 3 07-JUL-21 6Y0M 1 JRNL REVDAT 2 23-JUN-21 6Y0M 1 COMPND SOURCE REMARK DBREF REVDAT 2 2 1 SEQADV SEQRES HELIX SHEET REVDAT 2 3 1 SSBOND ATOM REVDAT 1 16-JUN-21 6Y0M 0 JRNL AUTH V.F.ILKOW,A.M.DAVIES,B.DHALIWAL,A.J.BEAVIL,B.J.SUTTON, JRNL AUTH 2 J.M.MCDONNELL JRNL TITL REVIVING LOST BINDING SITES: EXPLORING CALCIUM-BINDING SITE JRNL TITL 2 TRANSITIONS BETWEEN HUMAN AND MURINE CD23. JRNL REF FEBS OPEN BIO V. 11 1827 2021 JRNL REFN ESSN 2211-5463 JRNL PMID 34075727 JRNL DOI 10.1002/2211-5463.13214 REMARK 2 REMARK 2 RESOLUTION. 1.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (1.13_2998: ???) REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 49.88 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.340 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.7 REMARK 3 NUMBER OF REFLECTIONS : 28779 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.171 REMARK 3 R VALUE (WORKING SET) : 0.168 REMARK 3 FREE R VALUE : 0.212 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.990 REMARK 3 FREE R VALUE TEST SET COUNT : 1436 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 49.9046 - 3.2314 1.00 2988 158 0.1626 0.1897 REMARK 3 2 3.2314 - 2.5649 1.00 2815 148 0.1656 0.2208 REMARK 3 3 2.5649 - 2.2407 0.98 2726 142 0.1912 0.2391 REMARK 3 4 2.2407 - 2.0358 0.99 2723 144 0.1502 0.2017 REMARK 3 5 2.0358 - 1.8899 0.91 2507 129 0.2082 0.2391 REMARK 3 6 1.8899 - 1.7784 1.00 2728 144 0.1363 0.1881 REMARK 3 7 1.7784 - 1.6894 1.00 2723 144 0.1355 0.1997 REMARK 3 8 1.6894 - 1.6158 1.00 2714 143 0.1530 0.2333 REMARK 3 9 1.6158 - 1.5536 1.00 2713 142 0.1874 0.2376 REMARK 3 10 1.5536 - 1.5000 1.00 2706 142 0.2423 0.2934 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : NULL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.180 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 21.690 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 19.30 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 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.013 1205 REMARK 3 ANGLE : 1.316 1662 REMARK 3 CHIRALITY : 0.086 163 REMARK 3 PLANARITY : 0.009 218 REMARK 3 DIHEDRAL : 10.609 727 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 6Y0M COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 10-FEB-20. REMARK 100 THE DEPOSITION ID IS D_1200012418. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 07-JUL-14 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : DIAMOND REMARK 200 BEAMLINE : I04-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.92 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : AIMLESS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 29150 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.500 REMARK 200 RESOLUTION RANGE LOW (A) : 49.880 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 200 DATA REDUNDANCY : 39.00 REMARK 200 R MERGE (I) : 0.10900 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 24.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.50 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.53 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.7 REMARK 200 DATA REDUNDANCY IN SHELL : 35.50 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.700 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: 4G9A REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 54.50 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.70 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M SODIUM-CACODYLATE PH 6.5, 1M TRI REMARK 280 -SODIUM-CITRATE CRYSTALS WERE SOAKED WITH A SOLUTION OF 0.1M REMARK 280 SODIUM-CACODYLATE AT PH 7.1, 1.4M TRI-SODIUM-CITRATE AND 10MM REMARK 280 CACL2 FOR FOUR DAYS BEFORE HARVESTING WHICH ALSO SERVED AS A REMARK 280 CRYOPROTECTANT., VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 291K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 6 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 -X,-Y,Z REMARK 290 5555 Y,-X+Y,Z REMARK 290 6555 X-Y,X,Z REMARK 290 7555 Y,X,-Z REMARK 290 8555 X-Y,-Y,-Z REMARK 290 9555 -X,-X+Y,-Z REMARK 290 10555 -Y,-X,-Z REMARK 290 11555 -X+Y,Y,-Z REMARK 290 12555 X,X-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 -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 0.00000 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 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 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 0.00000 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 0.00000 REMARK 290 SMTRY1 7 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 7 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 9 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 9 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 10 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 10 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 10 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 11 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 11 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 12 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 12 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 12 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: 7350 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 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 NE2 HIS A 186 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 413 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 466 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 483 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 487 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 514 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 519 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 524 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 537 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 546 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 SER A 156 REMARK 465 GLY A 157 REMARK 465 ALA A 292 REMARK 465 SER A 293 REMARK 465 GLU A 294 REMARK 465 GLY A 295 REMARK 465 SER A 296 REMARK 465 ALA A 297 REMARK 465 GLU A 298 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 GLU A 165 CD OE1 OE2 REMARK 470 LYS A 166 CE NZ REMARK 470 LYS A 179 CE NZ REMARK 470 ASN A 252 CB CG OD1 ND2 REMARK 470 GLN A 255 CG CD OE1 NE2 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 409 O HOH A 430 2.09 REMARK 500 O HOH A 406 O HOH A 459 2.12 REMARK 500 O HOH A 473 O HOH A 539 2.15 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 409 O HOH A 409 12565 2.14 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 ASN A 161 22.07 -140.84 REMARK 500 LYS A 166 -7.59 84.55 REMARK 500 GLN A 171 -128.56 53.46 REMARK 500 ASP A 241 -73.04 -103.83 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 558 DISTANCE = 6.44 ANGSTROMS REMARK 525 HOH A 559 DISTANCE = 7.31 ANGSTROMS DBREF 6Y0M A 156 298 UNP P06734 FCER2_HUMAN 156 298 SEQADV 6Y0M ASP A 225 UNP P06734 ASN 225 ENGINEERED MUTATION SEQADV 6Y0M GLU A 229 UNP P06734 LYS 229 ENGINEERED MUTATION SEQADV 6Y0M ASN A 251 UNP P06734 THR 251 ENGINEERED MUTATION SEQADV 6Y0M ASN A 252 UNP P06734 SER 252 ENGINEERED MUTATION SEQRES 1 A 143 SER GLY PHE VAL CYS ASN THR CYS PRO GLU LYS TRP ILE SEQRES 2 A 143 ASN PHE GLN ARG LYS CYS TYR TYR PHE GLY LYS GLY THR SEQRES 3 A 143 LYS GLN TRP VAL HIS ALA ARG TYR ALA CYS ASP ASP MET SEQRES 4 A 143 GLU GLY GLN LEU VAL SER ILE HIS SER PRO GLU GLU GLN SEQRES 5 A 143 ASP PHE LEU THR LYS HIS ALA SER HIS THR GLY SER TRP SEQRES 6 A 143 ILE GLY LEU ARG ASP LEU ASP LEU GLU GLY GLU PHE ILE SEQRES 7 A 143 TRP VAL ASP GLY SER HIS VAL ASP TYR SER ASN TRP ALA SEQRES 8 A 143 PRO GLY GLU PRO ASN ASN ARG SER GLN GLY GLU ASP CYS SEQRES 9 A 143 VAL MET MET ARG GLY SER GLY ARG TRP ASN ASP ALA PHE SEQRES 10 A 143 CYS ASP ARG LYS LEU GLY ALA TRP VAL CYS ASP ARG LEU SEQRES 11 A 143 ALA THR CYS THR PRO PRO ALA SER GLU GLY SER ALA GLU FORMUL 2 HOH *159(H2 O) HELIX 1 AA1 GLN A 183 MET A 194 1 12 HELIX 2 AA2 SER A 203 ALA A 214 1 12 SHEET 1 AA1 2 CYS A 160 THR A 162 0 SHEET 2 AA1 2 THR A 287 CYS A 288 -1 O THR A 287 N THR A 162 SHEET 1 AA2 4 ILE A 168 PHE A 170 0 SHEET 2 AA2 4 LYS A 173 LYS A 182 -1 O TYR A 175 N ILE A 168 SHEET 3 AA2 4 LEU A 277 LEU A 285 -1 O ARG A 284 N CYS A 174 SHEET 4 AA2 4 GLN A 197 LEU A 198 -1 N GLN A 197 O ASP A 283 SHEET 1 AA3 4 GLU A 231 TRP A 234 0 SHEET 2 AA3 4 SER A 219 LEU A 226 -1 N LEU A 226 O GLU A 231 SHEET 3 AA3 4 CYS A 259 MET A 262 -1 O MET A 262 N SER A 219 SHEET 4 AA3 4 TRP A 268 ALA A 271 -1 O ASN A 269 N MET A 261 SSBOND 1 CYS A 160 CYS A 288 1555 1555 2.03 SSBOND 2 CYS A 163 CYS A 174 1555 1555 2.05 SSBOND 3 CYS A 191 CYS A 282 1555 1555 2.05 SSBOND 4 CYS A 259 CYS A 273 1555 1555 2.05 CRYST1 115.186 115.186 45.752 90.00 90.00 120.00 P 6 2 2 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 0.008682 0.005012 0.000000 0.00000 SCALE2 0.000000 0.010025 0.000000 0.00000 SCALE3 0.000000 0.000000 0.021857 0.00000