HEADER TRANSPORT PROTEIN 14-DEC-20 7L17 TITLE CRYSTAL STRUCTURE OF SUGAR-BOUND MELIBIOSE PERMEASE MELB COMPND MOL_ID: 1; COMPND 2 MOLECULE: MELIBIOSE CARRIER PROTEIN; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: MELIBIOSE PERMEASE,MELIBIOSE TRANSPORTER,NA+ (LI+)/MELIBIOSE COMPND 5 SYMPORTER,THIOMETHYLGALACTOSIDE PERMEASE II; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SALMONELLA TYPHIMURIUM (STRAIN LT2 / SGSC1412 / SOURCE 3 ATCC 700720); SOURCE 4 ORGANISM_TAXID: 99287; SOURCE 5 STRAIN: LT2 / SGSC1412 / ATCC 700720; SOURCE 6 ATCC: 700720; SOURCE 7 GENE: MELB, STM4299; SOURCE 8 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 9 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 10 EXPRESSION_SYSTEM_STRAIN: DW2; SOURCE 11 EXPRESSION_SYSTEM_VARIANT: MELBLACYZ; SOURCE 12 EXPRESSION_SYSTEM_VECTOR_TYPE: PK95; SOURCE 13 EXPRESSION_SYSTEM_PLASMID: PK95 KEYWDS MFS-FOLD, GALACTOSIDE BINDING, SECONDARY ACTIVE TRANSPORT, MELB, KEYWDS 2 TRANSPORT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR L.GUAN REVDAT 3 22-MAY-24 7L17 1 REMARK REVDAT 2 25-AUG-21 7L17 1 JRNL REVDAT 1 04-AUG-21 7L17 0 JRNL AUTH L.GUAN,P.HARIHARAN JRNL TITL X-RAY CRYSTALLOGRAPHY REVEALS MOLECULAR RECOGNITION JRNL TITL 2 MECHANISM FOR SUGAR BINDING IN A MELIBIOSE TRANSPORTER MELB. JRNL REF COMMUN BIOL V. 4 931 2021 JRNL REFN ESSN 2399-3642 JRNL PMID 34341464 JRNL DOI 10.1038/S42003-021-02462-X REMARK 2 REMARK 2 RESOLUTION. 3.05 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX DEV_3936 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 : GEOSTD + MONOMER LIBRARY + CDL V1.2 REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 3.05 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 29.89 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.330 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.7 REMARK 3 NUMBER OF REFLECTIONS : 18617 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.263 REMARK 3 R VALUE (WORKING SET) : 0.259 REMARK 3 FREE R VALUE : 0.294 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 9.970 REMARK 3 FREE R VALUE TEST SET COUNT : 1856 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 29.8900 - 7.1400 0.99 1366 149 0.2166 0.2482 REMARK 3 2 7.1400 - 5.6800 1.00 1329 142 0.2759 0.3164 REMARK 3 3 5.6800 - 4.9700 1.00 1283 144 0.2594 0.2989 REMARK 3 4 4.9700 - 4.5200 1.00 1300 147 0.2410 0.2539 REMARK 3 5 4.5100 - 4.1900 1.00 1284 142 0.2477 0.2792 REMARK 3 6 4.1900 - 3.9500 1.00 1284 150 0.2777 0.3314 REMARK 3 7 3.9500 - 3.7500 0.99 1266 136 0.2870 0.3240 REMARK 3 8 3.7500 - 3.5900 0.99 1272 141 0.3091 0.3505 REMARK 3 9 3.5900 - 3.4500 1.00 1282 144 0.2853 0.3223 REMARK 3 10 3.4500 - 3.3300 1.00 1263 133 0.3004 0.3241 REMARK 3 11 3.3300 - 3.2200 1.00 1283 148 0.2937 0.3348 REMARK 3 12 3.2200 - 3.1300 1.00 1284 137 0.3157 0.3639 REMARK 3 13 3.1300 - 3.0500 1.00 1265 143 0.3557 0.3383 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL 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) : 0.415 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 31.966 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 98.33 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 107.0 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 : 0.003 3676 REMARK 3 ANGLE : 0.536 5005 REMARK 3 CHIRALITY : 0.036 589 REMARK 3 PLANARITY : 0.004 604 REMARK 3 DIHEDRAL : 4.096 495 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 1 REMARK 3 TLS GROUP : 1 REMARK 3 SELECTION: ALL REMARK 3 ORIGIN FOR THE GROUP (A): -24.7771 50.3639 -6.0734 REMARK 3 T TENSOR REMARK 3 T11: 0.3562 T22: 0.9959 REMARK 3 T33: 1.0099 T12: -0.1049 REMARK 3 T13: 0.0640 T23: 0.0372 REMARK 3 L TENSOR REMARK 3 L11: 2.6386 L22: 2.3158 REMARK 3 L33: 2.7120 L12: 0.4261 REMARK 3 L13: 0.5530 L23: 0.5719 REMARK 3 S TENSOR REMARK 3 S11: 0.3357 S12: 0.3740 S13: 0.0658 REMARK 3 S21: 0.0619 S22: -0.1265 S23: 0.0521 REMARK 3 S31: 0.1406 S32: 0.0766 S33: -0.1967 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 7L17 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 17-DEC-20. REMARK 100 THE DEPOSITION ID IS D_1000253492. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 19-JUN-18 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 - 8.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 5.0.2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97949 REMARK 200 MONOCHROMATOR : DOUBLE-CRYSTAL, SI(111) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS3 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : AIMLESS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 18680 REMARK 200 RESOLUTION RANGE HIGH (A) : 3.050 REMARK 200 RESOLUTION RANGE LOW (A) : 29.895 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.7 REMARK 200 DATA REDUNDANCY : 21.00 REMARK 200 R MERGE (I) : 0.10900 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 20.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 3.05 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 3.26 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.9 REMARK 200 DATA REDUNDANCY IN SHELL : 22.50 REMARK 200 R MERGE FOR SHELL (I) : 1.37000 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: SAD REMARK 200 SOFTWARE USED: CRANK2 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: ROD REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 74.18 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 4.76 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 50 MM BACL2, 50 MM CACL2, 100 MM TRIS REMARK 280 -HCL, PH 8.5, AND 29-32% PEG 400, 6 MM A-NPG, VAPOR DIFFUSION, REMARK 280 HANGING DROP, TEMPERATURE 297.15K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 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+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+2/3 REMARK 290 6555 -X,-X+Y,-Z+1/3 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 34.77800 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 69.55600 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 69.55600 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 34.77800 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 PRO A 455 REMARK 465 PRO A 456 REMARK 465 PHE A 457 REMARK 465 VAL A 458 REMARK 465 GLU A 459 REMARK 465 GLN A 460 REMARK 465 PRO A 461 REMARK 465 ASP A 462 REMARK 465 SER A 463 REMARK 465 PRO A 464 REMARK 465 ALA A 465 REMARK 465 ILE A 466 REMARK 465 SER A 467 REMARK 465 VAL A 468 REMARK 465 VAL A 469 REMARK 465 ALA A 470 REMARK 465 THR A 471 REMARK 465 SER A 472 REMARK 465 ASP A 473 REMARK 465 VAL A 474 REMARK 465 LYS A 475 REMARK 465 ALA A 476 REMARK 465 HIS A 477 REMARK 465 HIS A 478 REMARK 465 HIS A 479 REMARK 465 HIS A 480 REMARK 465 HIS A 481 REMARK 465 HIS A 482 REMARK 465 HIS A 483 REMARK 465 HIS A 484 REMARK 465 HIS A 485 REMARK 465 HIS A 486 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 36 -52.89 -120.79 REMARK 500 ALA A 319 -157.66 -95.96 REMARK 500 HIS A 322 -34.57 -131.14 REMARK 500 ALA A 401 137.41 -171.37 REMARK 500 ASN A 436 -32.96 -135.46 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 9PG A 501 DBREF 7L17 A 2 476 UNP P30878 MELB_SALTY 2 476 SEQADV 7L17 MET A 5 UNP P30878 LEU 5 ENGINEERED MUTATION SEQADV 7L17 CYS A 59 UNP P30878 ASP 59 ENGINEERED MUTATION SEQADV 7L17 HIS A 477 UNP P30878 EXPRESSION TAG SEQADV 7L17 HIS A 478 UNP P30878 EXPRESSION TAG SEQADV 7L17 HIS A 479 UNP P30878 EXPRESSION TAG SEQADV 7L17 HIS A 480 UNP P30878 EXPRESSION TAG SEQADV 7L17 HIS A 481 UNP P30878 EXPRESSION TAG SEQADV 7L17 HIS A 482 UNP P30878 EXPRESSION TAG SEQADV 7L17 HIS A 483 UNP P30878 EXPRESSION TAG SEQADV 7L17 HIS A 484 UNP P30878 EXPRESSION TAG SEQADV 7L17 HIS A 485 UNP P30878 EXPRESSION TAG SEQADV 7L17 HIS A 486 UNP P30878 EXPRESSION TAG SEQRES 1 A 485 SER ILE SER MET THR THR LYS LEU SER TYR GLY PHE GLY SEQRES 2 A 485 ALA PHE GLY LYS ASP PHE ALA ILE GLY ILE VAL TYR MET SEQRES 3 A 485 TYR LEU MET TYR TYR TYR THR ASP VAL VAL GLY LEU SER SEQRES 4 A 485 VAL GLY LEU VAL GLY THR LEU PHE LEU VAL ALA ARG ILE SEQRES 5 A 485 TRP ASP ALA ILE ASN CYS PRO ILE MET GLY TRP ILE VAL SEQRES 6 A 485 ASN ALA THR ARG SER ARG TRP GLY LYS PHE LYS PRO TRP SEQRES 7 A 485 ILE LEU ILE GLY THR LEU THR ASN SER LEU VAL LEU PHE SEQRES 8 A 485 LEU LEU PHE SER ALA HIS LEU PHE GLU GLY THR ALA GLN SEQRES 9 A 485 VAL VAL PHE VAL CYS VAL THR TYR ILE LEU TRP GLY MET SEQRES 10 A 485 THR TYR THR ILE MET ASP ILE PRO PHE TRP SER LEU VAL SEQRES 11 A 485 PRO THR ILE THR LEU ASP LYS ARG GLU ARG GLU GLN LEU SEQRES 12 A 485 VAL PRO PHE PRO ARG PHE PHE ALA SER LEU ALA GLY PHE SEQRES 13 A 485 VAL THR ALA GLY ILE THR LEU PRO PHE VAL SER TYR VAL SEQRES 14 A 485 GLY GLY ALA ASP ARG GLY PHE GLY PHE GLN MET PHE THR SEQRES 15 A 485 LEU VAL LEU ILE ALA PHE PHE ILE ALA SER THR ILE VAL SEQRES 16 A 485 THR LEU ARG ASN VAL HIS GLU VAL TYR SER SER ASP ASN SEQRES 17 A 485 GLY VAL THR ALA GLY ARG PRO HIS LEU THR LEU LYS THR SEQRES 18 A 485 ILE VAL GLY LEU ILE TYR LYS ASN ASP GLN LEU SER CYS SEQRES 19 A 485 LEU LEU GLY MET ALA LEU ALA TYR ASN ILE ALA SER ASN SEQRES 20 A 485 ILE ILE ASN GLY PHE ALA ILE TYR TYR PHE THR TYR VAL SEQRES 21 A 485 ILE GLY ASP ALA ASP LEU PHE PRO TYR TYR LEU SER TYR SEQRES 22 A 485 ALA GLY ALA ALA ASN LEU LEU THR LEU ILE VAL PHE PRO SEQRES 23 A 485 ARG LEU VAL LYS MET LEU SER ARG ARG ILE LEU TRP ALA SEQRES 24 A 485 GLY ALA SER VAL MET PRO VAL LEU SER CYS ALA GLY LEU SEQRES 25 A 485 PHE ALA MET ALA LEU ALA ASP ILE HIS ASN ALA ALA LEU SEQRES 26 A 485 ILE VAL ALA ALA GLY ILE PHE LEU ASN ILE GLY THR ALA SEQRES 27 A 485 LEU PHE TRP VAL LEU GLN VAL ILE MET VAL ALA ASP THR SEQRES 28 A 485 VAL ASP TYR GLY GLU PHE LYS LEU ASN ILE ARG CYS GLU SEQRES 29 A 485 SER ILE ALA TYR SER VAL GLN THR MET VAL VAL LYS GLY SEQRES 30 A 485 GLY SER ALA PHE ALA ALA PHE PHE ILE ALA LEU VAL LEU SEQRES 31 A 485 GLY LEU ILE GLY TYR THR PRO ASN VAL ALA GLN SER ALA SEQRES 32 A 485 GLN THR LEU GLN GLY MET GLN PHE ILE MET ILE VAL LEU SEQRES 33 A 485 PRO VAL LEU PHE PHE MET MET THR LEU VAL LEU TYR PHE SEQRES 34 A 485 ARG TYR TYR ARG LEU ASN GLY ASP MET LEU ARG LYS ILE SEQRES 35 A 485 GLN ILE HIS LEU LEU ASP LYS TYR ARG LYS THR PRO PRO SEQRES 36 A 485 PHE VAL GLU GLN PRO ASP SER PRO ALA ILE SER VAL VAL SEQRES 37 A 485 ALA THR SER ASP VAL LYS ALA HIS HIS HIS HIS HIS HIS SEQRES 38 A 485 HIS HIS HIS HIS HET 9PG A 501 36 HETNAM 9PG 4-NITROPHENYL ALPHA-D-GALACTOPYRANOSIDE HETSYN 9PG 4-NITROPHENYL ALPHA-D-GALACTOSIDE; 4-NITROPHENYL D- HETSYN 2 9PG GALACTOSIDE; 4-NITROPHENYL GALACTOSIDE FORMUL 2 9PG C12 H15 N O8 HELIX 1 AA1 SER A 4 ALA A 21 1 18 HELIX 2 AA2 ILE A 22 VAL A 36 1 15 HELIX 3 AA3 SER A 40 ALA A 68 1 29 HELIX 4 AA4 PHE A 76 SER A 96 1 21 HELIX 5 AA5 ALA A 97 PHE A 100 5 4 HELIX 6 AA6 GLU A 101 SER A 129 1 29 HELIX 7 AA7 SER A 129 THR A 135 1 7 HELIX 8 AA8 ASP A 137 VAL A 145 1 9 HELIX 9 AA9 VAL A 145 GLY A 171 1 27 HELIX 10 AB1 ASP A 174 VAL A 201 1 28 HELIX 11 AB2 THR A 219 ASN A 230 1 12 HELIX 12 AB3 ASN A 230 TYR A 260 1 31 HELIX 13 AB4 ASP A 266 VAL A 285 1 20 HELIX 14 AB5 VAL A 285 LEU A 293 1 9 HELIX 15 AB6 SER A 294 ALA A 319 1 26 HELIX 16 AB7 ASN A 323 ASN A 361 1 39 HELIX 17 AB8 CYS A 364 GLY A 395 1 32 HELIX 18 AB9 SER A 403 TYR A 433 1 31 HELIX 19 AC1 GLY A 437 TYR A 451 1 15 SITE 1 AC1 9 LYS A 18 ASP A 19 TYR A 26 ASP A 124 SITE 2 AC1 9 TRP A 128 ARG A 149 TRP A 342 THR A 373 SITE 3 AC1 9 VAL A 376 CRYST1 126.364 126.364 104.334 90.00 90.00 120.00 P 31 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 0.007914 0.004569 0.000000 0.00000 SCALE2 0.000000 0.009138 0.000000 0.00000 SCALE3 0.000000 0.000000 0.009585 0.00000