HEADER TRANSPORT PROTEIN 04-APR-19 6OH2 TITLE X-RAY CRYSTAL STRUCTURE OF THE MOUSE CMP-SIALIC ACID TRANSPORTER IN TITLE 2 COMPLEX WITH CMP, BY LIPIDIC CUBIC PHASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: CMP-SIALIC ACID TRANSPORTER; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: RESIDUES 1-322; COMPND 5 SYNONYM: CMP-SIA-TR,SOLUTE CARRIER FAMILY 35 MEMBER A1; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: MUS MUSCULUS; SOURCE 3 ORGANISM_COMMON: MOUSE; SOURCE 4 ORGANISM_TAXID: 10090; SOURCE 5 GENE: SLC35A1; SOURCE 6 EXPRESSION_SYSTEM: KOMAGATAELLA PASTORIS; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 4922; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: SMD1168H KEYWDS DRUG/METABOLITE TRANSPORTER, NUCLEOTIDE-SUGAR, SIALIC ACID, KEYWDS 2 GLYCOSYLATION, TRANSPORT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR S.AHUJA,M.R.WHORTON REVDAT 3 13-MAR-24 6OH2 1 REMARK REVDAT 2 01-JAN-20 6OH2 1 REMARK REVDAT 1 24-APR-19 6OH2 0 JRNL AUTH S.AHUJA,M.R.WHORTON JRNL TITL STRUCTURAL BASIS FOR MAMMALIAN NUCLEOTIDE SUGAR TRANSPORT. JRNL REF ELIFE V. 8 2019 JRNL REFN ESSN 2050-084X JRNL PMID 30985278 JRNL DOI 10.7554/ELIFE.45221 REMARK 2 REMARK 2 RESOLUTION. 2.58 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.8.0158 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.58 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 47.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 97.6 REMARK 3 NUMBER OF REFLECTIONS : 10101 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) : 0.242 REMARK 3 R VALUE (WORKING SET) : 0.241 REMARK 3 FREE R VALUE : 0.252 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.700 REMARK 3 FREE R VALUE TEST SET COUNT : 503 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) : 2.58 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.65 REMARK 3 REFLECTION IN BIN (WORKING SET) : 608 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 78.56 REMARK 3 BIN R VALUE (WORKING SET) : 0.2690 REMARK 3 BIN FREE R VALUE SET COUNT : 26 REMARK 3 BIN FREE R VALUE : 0.4280 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2235 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 21 REMARK 3 SOLVENT ATOMS : 11 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 46.22 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.57000 REMARK 3 B22 (A**2) : -0.95000 REMARK 3 B33 (A**2) : -0.45000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 1.44000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.944 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.315 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.251 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 12.007 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.886 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.906 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2300 ; 0.008 ; 0.020 REMARK 3 BOND LENGTHS OTHERS (A): 2235 ; 0.001 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 3142 ; 1.127 ; 1.986 REMARK 3 BOND ANGLES OTHERS (DEGREES): 5130 ; 0.867 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 297 ; 5.207 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 65 ;36.011 ;23.077 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 363 ;13.286 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 5 ; 6.402 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 399 ; 0.053 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2495 ; 0.004 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 479 ; 0.001 ; 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): 1194 ; 1.329 ; 4.717 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 1193 ; 1.329 ; 4.717 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1489 ; 2.144 ; 7.074 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): 1490 ; 2.143 ; 7.075 REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1106 ; 1.327 ; 4.806 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): 1102 ; 1.326 ; 4.809 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): 1648 ; 2.126 ; 7.175 REMARK 3 LONG RANGE B REFINED ATOMS (A**2): 2641 ; 3.860 ;56.089 REMARK 3 LONG RANGE B OTHER ATOMS (A**2): 2639 ; 3.858 ;56.077 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 : NULL 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 6OH2 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 05-APR-19. REMARK 100 THE DEPOSITION ID IS D_1000240638. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 30-NOV-17 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 : APS REMARK 200 BEAMLINE : 23-ID-B REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0332 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS EIGER X 16M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : XDS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 10101 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.580 REMARK 200 RESOLUTION RANGE LOW (A) : 47.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.9 REMARK 200 DATA REDUNDANCY : 7.200 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 9.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.58 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.67 REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL 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 (%): 48.45 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.39 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 26.7-30% PEG 300, 0.1 M MES PH 6.5, REMARK 280 AND 0.1 M NACL, LIPIDIC CUBIC PHASE, TEMPERATURE 293.15K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 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+1/2,Y+1/2,Z REMARK 290 4555 -X+1/2,Y+1/2,-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 -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 72.27000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 24.76500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 72.27000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 24.76500 REMARK 290 SMTRY3 4 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 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 MET A 1 REMARK 465 ALA A 2 REMARK 465 PRO A 3 REMARK 465 ALA A 4 REMARK 465 ARG A 5 REMARK 465 GLU A 6 REMARK 465 ASN A 7 REMARK 465 VAL A 8 REMARK 465 SER A 9 REMARK 465 LEU A 10 REMARK 465 PHE A 11 REMARK 465 PHE A 12 REMARK 465 LYS A 13 REMARK 465 LEU A 14 REMARK 465 GLN A 164 REMARK 465 ALA A 165 REMARK 465 THR A 166 REMARK 465 LYS A 167 REMARK 465 GLN A 318 REMARK 465 ASP A 319 REMARK 465 THR A 320 REMARK 465 THR A 321 REMARK 465 SER A 322 REMARK 465 ASN A 323 REMARK 465 SER A 324 REMARK 465 LEU A 325 REMARK 465 GLU A 326 REMARK 465 VAL A 327 REMARK 465 LEU A 328 REMARK 465 PHE A 329 REMARK 465 GLN A 330 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 39 CG CD OE1 OE2 REMARK 470 GLU A 40 CG CD OE1 OE2 REMARK 470 GLU A 79 CG CD OE1 OE2 REMARK 470 LYS A 142 CG CD CE NZ REMARK 470 VAL A 168 CG1 CG2 REMARK 470 VAL A 169 CG1 CG2 REMARK 470 GLU A 235 CG CD OE1 OE2 REMARK 470 TYR A 244 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 GLN A 294 CG CD OE1 NE2 REMARK 470 ARG A 317 CG CD NE CZ NH1 NH2 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 THR A 267 -111.79 -126.13 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 C5P A 401 DBREF 6OH2 A 1 322 UNP Q61420 S35A1_MOUSE 1 322 SEQADV 6OH2 ASN A 323 UNP Q61420 EXPRESSION TAG SEQADV 6OH2 SER A 324 UNP Q61420 EXPRESSION TAG SEQADV 6OH2 LEU A 325 UNP Q61420 EXPRESSION TAG SEQADV 6OH2 GLU A 326 UNP Q61420 EXPRESSION TAG SEQADV 6OH2 VAL A 327 UNP Q61420 EXPRESSION TAG SEQADV 6OH2 LEU A 328 UNP Q61420 EXPRESSION TAG SEQADV 6OH2 PHE A 329 UNP Q61420 EXPRESSION TAG SEQADV 6OH2 GLN A 330 UNP Q61420 EXPRESSION TAG SEQRES 1 A 330 MET ALA PRO ALA ARG GLU ASN VAL SER LEU PHE PHE LYS SEQRES 2 A 330 LEU TYR CYS LEU THR VAL MET THR LEU VAL ALA ALA ALA SEQRES 3 A 330 TYR THR VAL ALA LEU ARG TYR THR ARG THR THR ALA GLU SEQRES 4 A 330 GLU LEU TYR PHE SER THR THR ALA VAL CYS ILE THR GLU SEQRES 5 A 330 VAL ILE LYS LEU LEU ILE SER VAL GLY LEU LEU ALA LYS SEQRES 6 A 330 GLU THR GLY SER LEU GLY ARG PHE LYS ALA SER LEU SER SEQRES 7 A 330 GLU ASN VAL LEU GLY SER PRO LYS GLU LEU ALA LYS LEU SEQRES 8 A 330 SER VAL PRO SER LEU VAL TYR ALA VAL GLN ASN ASN MET SEQRES 9 A 330 ALA PHE LEU ALA LEU SER ASN LEU ASP ALA ALA VAL TYR SEQRES 10 A 330 GLN VAL THR TYR GLN LEU LYS ILE PRO CYS THR ALA LEU SEQRES 11 A 330 CYS THR VAL LEU MET LEU ASN ARG THR LEU SER LYS LEU SEQRES 12 A 330 GLN TRP ILE SER VAL PHE MET LEU CYS GLY GLY VAL THR SEQRES 13 A 330 LEU VAL GLN TRP LYS PRO ALA GLN ALA THR LYS VAL VAL SEQRES 14 A 330 VAL ALA GLN ASN PRO LEU LEU GLY PHE GLY ALA ILE ALA SEQRES 15 A 330 ILE ALA VAL LEU CYS SER GLY PHE ALA GLY VAL TYR PHE SEQRES 16 A 330 GLU LYS VAL LEU LYS SER SER ASP THR SER LEU TRP VAL SEQRES 17 A 330 ARG ASN ILE GLN MET TYR LEU SER GLY ILE VAL VAL THR SEQRES 18 A 330 LEU ALA GLY THR TYR LEU SER ASP GLY ALA GLU ILE GLN SEQRES 19 A 330 GLU LYS GLY PHE PHE TYR GLY TYR THR TYR TYR VAL TRP SEQRES 20 A 330 PHE VAL ILE PHE LEU ALA SER VAL GLY GLY LEU TYR THR SEQRES 21 A 330 SER VAL VAL VAL LYS TYR THR ASP ASN ILE MET LYS GLY SEQRES 22 A 330 PHE SER ALA ALA ALA ALA ILE VAL LEU SER THR ILE ALA SEQRES 23 A 330 SER VAL LEU LEU PHE GLY LEU GLN ILE THR LEU SER PHE SEQRES 24 A 330 ALA LEU GLY ALA LEU LEU VAL CYS VAL SER ILE TYR LEU SEQRES 25 A 330 TYR GLY LEU PRO ARG GLN ASP THR THR SER ASN SER LEU SEQRES 26 A 330 GLU VAL LEU PHE GLN HET C5P A 401 21 HETNAM C5P CYTIDINE-5'-MONOPHOSPHATE FORMUL 2 C5P C9 H14 N3 O8 P FORMUL 3 HOH *11(H2 O) HELIX 1 AA1 LEU A 17 THR A 37 1 21 HELIX 2 AA2 PHE A 43 GLY A 68 1 26 HELIX 3 AA3 SER A 69 VAL A 81 1 13 HELIX 4 AA4 SER A 84 LEU A 112 1 29 HELIX 5 AA5 ASP A 113 GLN A 122 1 10 HELIX 6 AA6 LEU A 123 LEU A 136 1 14 HELIX 7 AA7 SER A 141 TRP A 160 1 20 HELIX 8 AA8 ASN A 173 SER A 201 1 29 HELIX 9 AA9 SER A 205 GLY A 237 1 33 HELIX 10 AB1 THR A 243 THR A 267 1 25 HELIX 11 AB2 ASP A 268 GLY A 292 1 25 HELIX 12 AB3 THR A 296 GLY A 314 1 19 SITE 1 AC1 16 LYS A 55 TYR A 98 GLN A 101 ASN A 102 SITE 2 AC1 16 TYR A 121 LYS A 124 SER A 188 PHE A 195 SITE 3 AC1 16 ASN A 210 TYR A 214 GLY A 257 SER A 261 SITE 4 AC1 16 LYS A 272 HOH A 503 HOH A 504 HOH A 509 CRYST1 144.540 49.530 50.150 90.00 107.63 90.00 C 1 2 1 4 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 0.006919 0.000000 0.002199 0.00000 SCALE2 0.000000 0.020190 0.000000 0.00000 SCALE3 0.000000 0.000000 0.020923 0.00000