HEADER HYDROLASE 12-JUL-25 9PJA TITLE CRYO-EM STRUCTURE OF HUMAN NXPE1 COMPND MOL_ID: 1; COMPND 2 MOLECULE: NXPE FAMILY MEMBER 1; COMPND 3 CHAIN: B, A; COMPND 4 SYNONYM: PROTEIN FAM55A; COMPND 5 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: NXPE1, FAM55A; SOURCE 6 EXPRESSION_SYSTEM: HOMO SAPIENS; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 9606 KEYWDS SIALIC ACID, ACETYLTRANSFERASE, HYDROLASE EXPDTA ELECTRON MICROSCOPY AUTHOR H.ZHANG,F.LI,D.PIPER,X.MIN REVDAT 1 03-JUN-26 9PJA 0 JRNL AUTH H.ZHANG,F.LI,M.ZHANG,H.KONNO,W.YU,X.MIN,M.PAULCHAKRABARTI, JRNL AUTH 2 B.CHOUDHURY,A.SIMONS,D.PIPER,H.HSU,W.OUYANG JRNL TITL STRUCTURE AND FUNCTION OF HUMAN NXPE1, A SIALIC ACID JRNL TITL 2 O-ACETYLTRANSFERASE JRNL REF BIORXIV 2026 JRNL REFN ISSN 2692-8205 JRNL DOI 10.64898/2026.05.20.726592 REMARK 2 REMARK 2 RESOLUTION. 2.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, EPU, PHENIX, CRYOSPARC, REMARK 3 PHENIX REMARK 3 RECONSTRUCTION SCHEMA : NULL REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : NULL REMARK 3 REFINEMENT SPACE : REAL REMARK 3 REFINEMENT PROTOCOL : FLEXIBLE FIT REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : 114.900 REMARK 3 REMARK 3 FITTING PROCEDURE : NULL REMARK 3 REMARK 3 EM IMAGE RECONSTRUCTION STATISTICS REMARK 3 NOMINAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 ACTUAL PIXEL SIZE (ANGSTROMS) : NULL REMARK 3 EFFECTIVE RESOLUTION (ANGSTROMS) : 2.800 REMARK 3 NUMBER OF PARTICLES : 106947 REMARK 3 CTF CORRECTION METHOD : PHASE FLIPPING AND AMPLITUDE REMARK 3 CORRECTION REMARK 3 REMARK 3 EM RECONSTRUCTION MAGNIFICATION CALIBRATION: NULL REMARK 3 REMARK 3 OTHER DETAILS: NULL REMARK 4 REMARK 4 9PJA COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 14-JUL-25. REMARK 100 THE DEPOSITION ID IS D_1000297746. REMARK 245 REMARK 245 EXPERIMENTAL DETAILS REMARK 245 RECONSTRUCTION METHOD : SINGLE PARTICLE REMARK 245 SPECIMEN TYPE : NULL REMARK 245 REMARK 245 ELECTRON MICROSCOPE SAMPLE REMARK 245 SAMPLE TYPE : PARTICLE REMARK 245 PARTICLE TYPE : POINT REMARK 245 NAME OF SAMPLE : DIMER OF NXPE1 REMARK 245 SAMPLE CONCENTRATION (MG ML-1) : 3.00 REMARK 245 SAMPLE SUPPORT DETAILS : NULL REMARK 245 SAMPLE VITRIFICATION DETAILS : NULL REMARK 245 SAMPLE BUFFER : NULL REMARK 245 PH : 7.40 REMARK 245 SAMPLE DETAILS : NULL REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : NULL REMARK 245 TEMPERATURE (KELVIN) : NULL REMARK 245 MICROSCOPE MODEL : TFS KRIOS REMARK 245 DETECTOR TYPE : GATAN K3 BIOQUANTUM (6K X REMARK 245 4K) REMARK 245 MINIMUM DEFOCUS (NM) : 5000.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 20000.00 REMARK 245 MINIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 MAXIMUM TILT ANGLE (DEGREES) : NULL REMARK 245 NOMINAL CS : NULL REMARK 245 IMAGING MODE : BRIGHT FIELD REMARK 245 ELECTRON DOSE (ELECTRONS NM**-2) : 5400.00 REMARK 245 ILLUMINATION MODE : FLOOD BEAM REMARK 245 NOMINAL MAGNIFICATION : NULL REMARK 245 CALIBRATED MAGNIFICATION : NULL REMARK 245 SOURCE : FIELD EMISSION GUN REMARK 245 ACCELERATION VOLTAGE (KV) : 300 REMARK 245 IMAGING DETAILS : NULL REMARK 247 REMARK 247 ELECTRON MICROSCOPY REMARK 247 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM ELECTRON REMARK 247 MICROSCOPY DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE REMARK 247 THAT CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES REMARK 247 ON THESE RECORDS ARE MEANINGLESS EXCEPT FOR THE CALCULATION REMARK 247 OF THE STRUCTURE FACTORS. 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, A, C, D 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 B 1 REMARK 465 SER B 2 REMARK 465 SER B 3 REMARK 465 ASN B 4 REMARK 465 THR B 5 REMARK 465 MET B 6 REMARK 465 LEU B 7 REMARK 465 GLN B 8 REMARK 465 LYS B 9 REMARK 465 THR B 10 REMARK 465 LEU B 11 REMARK 465 LEU B 12 REMARK 465 ILE B 13 REMARK 465 LEU B 14 REMARK 465 ILE B 15 REMARK 465 SER B 16 REMARK 465 PHE B 17 REMARK 465 SER B 18 REMARK 465 VAL B 19 REMARK 465 VAL B 20 REMARK 465 THR B 21 REMARK 465 TRP B 22 REMARK 465 MET B 23 REMARK 465 ILE B 24 REMARK 465 PHE B 25 REMARK 465 ILE B 26 REMARK 465 ILE B 27 REMARK 465 SER B 28 REMARK 465 GLN B 29 REMARK 465 ASN B 30 REMARK 465 PHE B 31 REMARK 465 THR B 32 REMARK 465 LYS B 33 REMARK 465 LEU B 34 REMARK 465 TRP B 35 REMARK 465 SER B 36 REMARK 465 ALA B 37 REMARK 465 LEU B 38 REMARK 465 ASN B 39 REMARK 465 LEU B 40 REMARK 465 SER B 41 REMARK 465 ILE B 42 REMARK 465 SER B 43 REMARK 465 VAL B 44 REMARK 465 HIS B 45 REMARK 465 TYR B 46 REMARK 465 TRP B 47 REMARK 465 ASN B 48 REMARK 465 ASN B 49 REMARK 465 SER B 50 REMARK 465 ALA B 51 REMARK 465 LYS B 52 REMARK 465 SER B 53 REMARK 465 LEU B 54 REMARK 465 PHE B 55 REMARK 465 PRO B 56 REMARK 465 LYS B 57 REMARK 465 THR B 58 REMARK 465 SER B 59 REMARK 465 LEU B 60 REMARK 465 ILE B 61 REMARK 465 PRO B 62 REMARK 465 MET A 1 REMARK 465 SER A 2 REMARK 465 SER A 3 REMARK 465 ASN A 4 REMARK 465 THR A 5 REMARK 465 MET A 6 REMARK 465 LEU A 7 REMARK 465 GLN A 8 REMARK 465 LYS A 9 REMARK 465 THR A 10 REMARK 465 LEU A 11 REMARK 465 LEU A 12 REMARK 465 ILE A 13 REMARK 465 LEU A 14 REMARK 465 ILE A 15 REMARK 465 SER A 16 REMARK 465 PHE A 17 REMARK 465 SER A 18 REMARK 465 VAL A 19 REMARK 465 VAL A 20 REMARK 465 THR A 21 REMARK 465 TRP A 22 REMARK 465 MET A 23 REMARK 465 ILE A 24 REMARK 465 PHE A 25 REMARK 465 ILE A 26 REMARK 465 ILE A 27 REMARK 465 SER A 28 REMARK 465 GLN A 29 REMARK 465 ASN A 30 REMARK 465 PHE A 31 REMARK 465 THR A 32 REMARK 465 LYS A 33 REMARK 465 LEU A 34 REMARK 465 TRP A 35 REMARK 465 SER A 36 REMARK 465 ALA A 37 REMARK 465 LEU A 38 REMARK 465 ASN A 39 REMARK 465 LEU A 40 REMARK 465 SER A 41 REMARK 465 ILE A 42 REMARK 465 SER A 43 REMARK 465 VAL A 44 REMARK 465 HIS A 45 REMARK 465 TYR A 46 REMARK 465 TRP A 47 REMARK 465 ASN A 48 REMARK 465 ASN A 49 REMARK 465 SER A 50 REMARK 465 ALA A 51 REMARK 465 LYS A 52 REMARK 465 SER A 53 REMARK 465 LEU A 54 REMARK 465 PHE A 55 REMARK 465 PRO A 56 REMARK 465 LYS A 57 REMARK 465 THR A 58 REMARK 465 SER A 59 REMARK 465 LEU A 60 REMARK 465 ILE A 61 REMARK 465 PRO A 62 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 LEU B 63 CG CD1 CD2 REMARK 470 LYS B 64 CG CD CE NZ REMARK 470 ARG B 300 CG CD NE CZ NH1 NH2 REMARK 470 GLU B 301 CG CD OE1 OE2 REMARK 470 GLU B 305 CG CD OE1 OE2 REMARK 470 LEU A 63 CG CD1 CD2 REMARK 470 ASN A 298 CG OD1 ND2 REMARK 470 LYS A 299 CG CD CE NZ REMARK 470 ARG A 300 CG CD NE CZ NH1 NH2 REMARK 470 GLU A 301 CG CD OE1 OE2 REMARK 470 LYS A 302 CG CD CE NZ 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 OE1 GLU A 422 NH2 ARG A 425 2.18 REMARK 500 OH TYR A 523 OD1 ASN A 537 2.19 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 B 161 20.44 -141.19 REMARK 500 ASN B 227 53.38 -92.36 REMARK 500 GLU B 304 31.79 -95.18 REMARK 500 GLU B 305 160.50 69.45 REMARK 500 ASP B 354 -168.96 -78.75 REMARK 500 ARG B 392 72.03 52.12 REMARK 500 HIS B 393 79.12 -65.48 REMARK 500 SER B 402 -164.85 -79.94 REMARK 500 SER B 468 86.43 -155.50 REMARK 500 ASN A 161 15.96 -141.78 REMARK 500 TRP A 172 -169.76 -127.02 REMARK 500 ARG A 289 54.50 -90.82 REMARK 500 ASP A 354 -167.91 -78.90 REMARK 500 ILE A 414 -63.82 -92.47 REMARK 500 GLU A 478 -178.64 -68.63 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 ARG B 392 HIS B 393 -149.79 REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-71685 RELATED DB: EMDB REMARK 900 CRYO-EM STRUCTURE OF HUMAN NXPE1 DBREF 9PJA B 1 547 UNP Q8N323 NXPE1_HUMAN 1 547 DBREF 9PJA A 1 547 UNP Q8N323 NXPE1_HUMAN 1 547 SEQRES 1 B 547 MET SER SER ASN THR MET LEU GLN LYS THR LEU LEU ILE SEQRES 2 B 547 LEU ILE SER PHE SER VAL VAL THR TRP MET ILE PHE ILE SEQRES 3 B 547 ILE SER GLN ASN PHE THR LYS LEU TRP SER ALA LEU ASN SEQRES 4 B 547 LEU SER ILE SER VAL HIS TYR TRP ASN ASN SER ALA LYS SEQRES 5 B 547 SER LEU PHE PRO LYS THR SER LEU ILE PRO LEU LYS PRO SEQRES 6 B 547 LEU THR GLU THR GLU LEU ARG ILE LYS GLU ILE ILE GLU SEQRES 7 B 547 LYS LEU ASP GLN GLN ILE PRO PRO ARG PRO PHE THR HIS SEQRES 8 B 547 VAL ASN THR THR THR SER ALA THR HIS SER THR ALA THR SEQRES 9 B 547 ILE LEU ASN PRO ARG ASP THR TYR CYS ARG GLY ASP GLN SEQRES 10 B 547 LEU ASP ILE LEU LEU GLU VAL ARG ASP HIS LEU GLY GLN SEQRES 11 B 547 ARG LYS GLN TYR GLY GLY ASP PHE LEU ARG ALA ARG MET SEQRES 12 B 547 SER SER PRO ALA LEU THR ALA GLY ALA SER GLY LYS VAL SEQRES 13 B 547 MET ASP PHE ASN ASN GLY THR TYR LEU VAL SER PHE THR SEQRES 14 B 547 LEU PHE TRP GLU GLY GLN VAL SER LEU SER LEU LEU LEU SEQRES 15 B 547 ILE HIS PRO SER GLU GLY ALA SER ALA LEU TRP ARG ALA SEQRES 16 B 547 ARG ASN GLN GLY TYR ASP LYS ILE ILE PHE LYS GLY LYS SEQRES 17 B 547 PHE VAL ASN GLY THR SER HIS VAL PHE THR GLU CYS GLY SEQRES 18 B 547 LEU THR LEU ASN SER ASN ALA GLU LEU CYS GLU TYR LEU SEQRES 19 B 547 ASP ASP ARG ASP GLN GLU ALA PHE TYR CYS MET LYS PRO SEQRES 20 B 547 GLN HIS MET PRO CYS GLU ALA LEU THR TYR MET THR THR SEQRES 21 B 547 ARG ASN ARG GLU VAL SER TYR LEU THR ASP LYS GLU ASN SEQRES 22 B 547 SER LEU PHE HIS ARG SER LYS VAL GLY VAL GLU MET MET SEQRES 23 B 547 LYS ASP ARG LYS HIS ILE ASP VAL THR ASN CYS ASN LYS SEQRES 24 B 547 ARG GLU LYS ILE GLU GLU THR CYS GLN VAL GLY MET LYS SEQRES 25 B 547 PRO PRO VAL PRO GLY GLY TYR THR LEU GLN GLY LYS TRP SEQRES 26 B 547 ILE THR THR PHE CYS ASN GLN VAL GLN LEU ASP THR ILE SEQRES 27 B 547 LYS ILE ASN GLY CYS LEU LYS GLY LYS LEU ILE TYR LEU SEQRES 28 B 547 LEU GLY ASP SER THR LEU ARG GLN TRP ILE TYR TYR PHE SEQRES 29 B 547 PRO LYS VAL VAL LYS THR LEU LYS PHE PHE ASP LEU HIS SEQRES 30 B 547 GLU THR GLY ILE PHE LYS LYS HIS LEU LEU LEU ASP ALA SEQRES 31 B 547 GLU ARG HIS THR GLN ILE GLN TRP LYS LYS HIS SER TYR SEQRES 32 B 547 PRO PHE VAL THR PHE GLN LEU TYR SER LEU ILE ASP HIS SEQRES 33 B 547 ASP TYR ILE PRO ARG GLU ILE ASP ARG LEU SER GLY ASP SEQRES 34 B 547 LYS ASN THR ALA ILE VAL ILE THR PHE GLY GLN HIS PHE SEQRES 35 B 547 ARG PRO PHE PRO ILE ASP ILE PHE ILE ARG ARG ALA ILE SEQRES 36 B 547 GLY VAL GLN LYS ALA ILE GLU ARG LEU PHE LEU ARG SER SEQRES 37 B 547 PRO ALA THR LYS VAL ILE ILE LYS THR GLU ASN ILE ARG SEQRES 38 B 547 GLU MET HIS ILE GLU THR GLU ARG PHE GLY ASP PHE HIS SEQRES 39 B 547 GLY TYR ILE HIS TYR LEU ILE MET LYS ASP ILE PHE LYS SEQRES 40 B 547 ASP LEU ASN VAL GLY ILE ILE ASP ALA TRP ASP MET THR SEQRES 41 B 547 ILE ALA TYR GLY THR ASP THR ILE HIS PRO PRO ASP HIS SEQRES 42 B 547 VAL ILE GLY ASN GLN ILE ASN MET PHE LEU ASN TYR ILE SEQRES 43 B 547 CYS SEQRES 1 A 547 MET SER SER ASN THR MET LEU GLN LYS THR LEU LEU ILE SEQRES 2 A 547 LEU ILE SER PHE SER VAL VAL THR TRP MET ILE PHE ILE SEQRES 3 A 547 ILE SER GLN ASN PHE THR LYS LEU TRP SER ALA LEU ASN SEQRES 4 A 547 LEU SER ILE SER VAL HIS TYR TRP ASN ASN SER ALA LYS SEQRES 5 A 547 SER LEU PHE PRO LYS THR SER LEU ILE PRO LEU LYS PRO SEQRES 6 A 547 LEU THR GLU THR GLU LEU ARG ILE LYS GLU ILE ILE GLU SEQRES 7 A 547 LYS LEU ASP GLN GLN ILE PRO PRO ARG PRO PHE THR HIS SEQRES 8 A 547 VAL ASN THR THR THR SER ALA THR HIS SER THR ALA THR SEQRES 9 A 547 ILE LEU ASN PRO ARG ASP THR TYR CYS ARG GLY ASP GLN SEQRES 10 A 547 LEU ASP ILE LEU LEU GLU VAL ARG ASP HIS LEU GLY GLN SEQRES 11 A 547 ARG LYS GLN TYR GLY GLY ASP PHE LEU ARG ALA ARG MET SEQRES 12 A 547 SER SER PRO ALA LEU THR ALA GLY ALA SER GLY LYS VAL SEQRES 13 A 547 MET ASP PHE ASN ASN GLY THR TYR LEU VAL SER PHE THR SEQRES 14 A 547 LEU PHE TRP GLU GLY GLN VAL SER LEU SER LEU LEU LEU SEQRES 15 A 547 ILE HIS PRO SER GLU GLY ALA SER ALA LEU TRP ARG ALA SEQRES 16 A 547 ARG ASN GLN GLY TYR ASP LYS ILE ILE PHE LYS GLY LYS SEQRES 17 A 547 PHE VAL ASN GLY THR SER HIS VAL PHE THR GLU CYS GLY SEQRES 18 A 547 LEU THR LEU ASN SER ASN ALA GLU LEU CYS GLU TYR LEU SEQRES 19 A 547 ASP ASP ARG ASP GLN GLU ALA PHE TYR CYS MET LYS PRO SEQRES 20 A 547 GLN HIS MET PRO CYS GLU ALA LEU THR TYR MET THR THR SEQRES 21 A 547 ARG ASN ARG GLU VAL SER TYR LEU THR ASP LYS GLU ASN SEQRES 22 A 547 SER LEU PHE HIS ARG SER LYS VAL GLY VAL GLU MET MET SEQRES 23 A 547 LYS ASP ARG LYS HIS ILE ASP VAL THR ASN CYS ASN LYS SEQRES 24 A 547 ARG GLU LYS ILE GLU GLU THR CYS GLN VAL GLY MET LYS SEQRES 25 A 547 PRO PRO VAL PRO GLY GLY TYR THR LEU GLN GLY LYS TRP SEQRES 26 A 547 ILE THR THR PHE CYS ASN GLN VAL GLN LEU ASP THR ILE SEQRES 27 A 547 LYS ILE ASN GLY CYS LEU LYS GLY LYS LEU ILE TYR LEU SEQRES 28 A 547 LEU GLY ASP SER THR LEU ARG GLN TRP ILE TYR TYR PHE SEQRES 29 A 547 PRO LYS VAL VAL LYS THR LEU LYS PHE PHE ASP LEU HIS SEQRES 30 A 547 GLU THR GLY ILE PHE LYS LYS HIS LEU LEU LEU ASP ALA SEQRES 31 A 547 GLU ARG HIS THR GLN ILE GLN TRP LYS LYS HIS SER TYR SEQRES 32 A 547 PRO PHE VAL THR PHE GLN LEU TYR SER LEU ILE ASP HIS SEQRES 33 A 547 ASP TYR ILE PRO ARG GLU ILE ASP ARG LEU SER GLY ASP SEQRES 34 A 547 LYS ASN THR ALA ILE VAL ILE THR PHE GLY GLN HIS PHE SEQRES 35 A 547 ARG PRO PHE PRO ILE ASP ILE PHE ILE ARG ARG ALA ILE SEQRES 36 A 547 GLY VAL GLN LYS ALA ILE GLU ARG LEU PHE LEU ARG SER SEQRES 37 A 547 PRO ALA THR LYS VAL ILE ILE LYS THR GLU ASN ILE ARG SEQRES 38 A 547 GLU MET HIS ILE GLU THR GLU ARG PHE GLY ASP PHE HIS SEQRES 39 A 547 GLY TYR ILE HIS TYR LEU ILE MET LYS ASP ILE PHE LYS SEQRES 40 A 547 ASP LEU ASN VAL GLY ILE ILE ASP ALA TRP ASP MET THR SEQRES 41 A 547 ILE ALA TYR GLY THR ASP THR ILE HIS PRO PRO ASP HIS SEQRES 42 A 547 VAL ILE GLY ASN GLN ILE ASN MET PHE LEU ASN TYR ILE SEQRES 43 A 547 CYS HET NAG C 1 14 HET NAG C 2 14 HET NAG D 1 14 HET NAG D 2 14 HET ACO B 601 51 HET NAG B 602 14 HET NAG B 603 14 HET ACO A 601 51 HET NAG A 602 14 HETNAM NAG 2-ACETAMIDO-2-DEOXY-BETA-D-GLUCOPYRANOSE HETNAM ACO ACETYL COENZYME *A HETSYN NAG N-ACETYL-BETA-D-GLUCOSAMINE; 2-ACETAMIDO-2-DEOXY-BETA- HETSYN 2 NAG D-GLUCOSE; 2-ACETAMIDO-2-DEOXY-D-GLUCOSE; 2-ACETAMIDO- HETSYN 3 NAG 2-DEOXY-GLUCOSE; N-ACETYL-D-GLUCOSAMINE FORMUL 3 NAG 7(C8 H15 N O6) FORMUL 5 ACO 2(C23 H38 N7 O17 P3 S) HELIX 1 AA1 THR B 67 ILE B 84 1 18 HELIX 2 AA2 HIS B 91 THR B 94 5 4 HELIX 3 AA3 PRO B 185 ASN B 197 1 13 HELIX 4 AA4 PRO B 251 GLU B 253 5 3 HELIX 5 AA5 THR B 269 SER B 274 1 6 HELIX 6 AA6 ASP B 336 LEU B 344 1 9 HELIX 7 AA7 ASP B 354 VAL B 368 1 15 HELIX 8 AA8 TYR B 418 ARG B 425 1 8 HELIX 9 AA9 PHE B 438 ARG B 443 5 6 HELIX 10 AB1 PRO B 446 SER B 468 1 23 HELIX 11 AB2 GLU B 486 GLY B 491 1 6 HELIX 12 AB3 GLY B 491 PHE B 506 1 16 HELIX 13 AB4 ASP B 515 GLY B 524 1 10 HELIX 14 AB5 PRO B 531 CYS B 547 1 17 HELIX 15 AB6 THR A 67 ILE A 84 1 18 HELIX 16 AB7 HIS A 91 THR A 94 5 4 HELIX 17 AB8 PRO A 185 ASN A 197 1 13 HELIX 18 AB9 PRO A 251 GLU A 253 5 3 HELIX 19 AC1 THR A 269 SER A 274 1 6 HELIX 20 AC2 ASP A 336 LYS A 345 1 10 HELIX 21 AC3 ASP A 354 PHE A 364 1 11 HELIX 22 AC4 PRO A 365 VAL A 367 5 3 HELIX 23 AC5 ALA A 390 HIS A 393 5 4 HELIX 24 AC6 TYR A 418 ARG A 425 1 8 HELIX 25 AC7 PHE A 438 ARG A 443 5 6 HELIX 26 AC8 PRO A 446 SER A 468 1 23 HELIX 27 AC9 GLU A 486 GLY A 491 1 6 HELIX 28 AD1 GLY A 491 PHE A 506 1 16 HELIX 29 AD2 ASP A 515 GLY A 524 1 10 HELIX 30 AD3 PRO A 531 CYS A 547 1 17 SHEET 1 AA1 4 THR B 96 LEU B 106 0 SHEET 2 AA1 4 GLN B 117 ASP B 126 -1 O ASP B 119 N LEU B 106 SHEET 3 AA1 4 THR B 163 THR B 169 -1 O VAL B 166 N ILE B 120 SHEET 4 AA1 4 LYS B 155 PHE B 159 -1 N MET B 157 O LEU B 165 SHEET 1 AA2 4 TYR B 112 CYS B 113 0 SHEET 2 AA2 4 ILE B 292 THR B 295 1 O THR B 295 N TYR B 112 SHEET 3 AA2 4 GLY B 174 HIS B 184 -1 N GLY B 174 O VAL B 294 SHEET 4 AA2 4 VAL B 283 GLU B 284 -1 O VAL B 283 N LEU B 182 SHEET 1 AA3 7 TYR B 112 CYS B 113 0 SHEET 2 AA3 7 ILE B 292 THR B 295 1 O THR B 295 N TYR B 112 SHEET 3 AA3 7 GLY B 174 HIS B 184 -1 N GLY B 174 O VAL B 294 SHEET 4 AA3 7 PHE B 138 SER B 145 -1 N SER B 144 O SER B 177 SHEET 5 AA3 7 ALA B 150 SER B 153 -1 O ALA B 150 N SER B 145 SHEET 6 AA3 7 GLY B 318 LEU B 321 -1 O THR B 320 N GLY B 151 SHEET 7 AA3 7 LYS B 324 THR B 327 -1 O LYS B 324 N LEU B 321 SHEET 1 AA4 6 LEU B 230 ASP B 235 0 SHEET 2 AA4 6 GLU B 240 MET B 245 -1 O PHE B 242 N TYR B 233 SHEET 3 AA4 6 SER B 214 GLY B 221 -1 N GLY B 221 O TYR B 243 SHEET 4 AA4 6 ILE B 203 ASN B 211 -1 N ASN B 211 O SER B 214 SHEET 5 AA4 6 LEU B 255 ASN B 262 -1 O THR B 259 N LYS B 206 SHEET 6 AA4 6 TYR B 411 SER B 412 -1 O TYR B 411 N MET B 258 SHEET 1 AA5 7 LYS B 372 PHE B 373 0 SHEET 2 AA5 7 HIS B 385 ASP B 389 -1 O LEU B 388 N LYS B 372 SHEET 3 AA5 7 THR B 394 LYS B 399 -1 O TRP B 398 N HIS B 385 SHEET 4 AA5 7 LEU B 348 GLY B 353 1 N LEU B 351 O GLN B 397 SHEET 5 AA5 7 THR B 432 THR B 437 1 O VAL B 435 N LEU B 352 SHEET 6 AA5 7 LYS B 472 LYS B 476 1 O LYS B 476 N ILE B 436 SHEET 7 AA5 7 GLY B 512 ILE B 514 1 O GLY B 512 N ILE B 475 SHEET 1 AA6 4 THR A 96 LEU A 106 0 SHEET 2 AA6 4 GLN A 117 ASP A 126 -1 O ARG A 125 N SER A 97 SHEET 3 AA6 4 THR A 163 THR A 169 -1 O TYR A 164 N LEU A 122 SHEET 4 AA6 4 LYS A 155 ASP A 158 -1 N MET A 157 O LEU A 165 SHEET 1 AA7 4 ALA A 150 SER A 153 0 SHEET 2 AA7 4 PHE A 138 SER A 145 -1 N MET A 143 O ALA A 152 SHEET 3 AA7 4 GLY A 174 HIS A 184 -1 O SER A 177 N SER A 144 SHEET 4 AA7 4 VAL A 283 GLU A 284 -1 O VAL A 283 N LEU A 182 SHEET 1 AA8 4 ALA A 150 SER A 153 0 SHEET 2 AA8 4 PHE A 138 SER A 145 -1 N MET A 143 O ALA A 152 SHEET 3 AA8 4 GLY A 174 HIS A 184 -1 O SER A 177 N SER A 144 SHEET 4 AA8 4 ILE A 292 VAL A 294 -1 O VAL A 294 N GLY A 174 SHEET 1 AA9 6 LEU A 230 ASP A 235 0 SHEET 2 AA9 6 GLU A 240 MET A 245 -1 O CYS A 244 N CYS A 231 SHEET 3 AA9 6 HIS A 215 GLY A 221 -1 N GLU A 219 O MET A 245 SHEET 4 AA9 6 ILE A 203 VAL A 210 -1 N PHE A 209 O VAL A 216 SHEET 5 AA9 6 LEU A 255 ASN A 262 -1 O THR A 259 N LYS A 206 SHEET 6 AA9 6 TYR A 411 SER A 412 -1 O TYR A 411 N MET A 258 SHEET 1 AB1 2 GLY A 318 LEU A 321 0 SHEET 2 AB1 2 LYS A 324 THR A 327 -1 O LYS A 324 N LEU A 321 SHEET 1 AB2 7 LYS A 372 PHE A 373 0 SHEET 2 AB2 7 HIS A 385 ASP A 389 -1 O LEU A 388 N LYS A 372 SHEET 3 AB2 7 THR A 394 LYS A 399 -1 O ILE A 396 N LEU A 387 SHEET 4 AB2 7 LEU A 348 GLY A 353 1 N LEU A 351 O GLN A 397 SHEET 5 AB2 7 THR A 432 THR A 437 1 O VAL A 435 N LEU A 352 SHEET 6 AB2 7 LYS A 472 LYS A 476 1 O LYS A 476 N ILE A 436 SHEET 7 AB2 7 GLY A 512 ILE A 514 1 O GLY A 512 N ILE A 475 SSBOND 1 CYS B 113 CYS B 297 1555 1555 2.03 SSBOND 2 CYS B 220 CYS B 244 1555 1555 2.03 SSBOND 3 CYS B 231 CYS B 252 1555 1555 2.02 SSBOND 4 CYS B 307 CYS B 330 1555 1555 2.03 SSBOND 5 CYS B 343 CYS B 547 1555 1555 2.03 SSBOND 6 CYS A 113 CYS A 297 1555 1555 2.03 SSBOND 7 CYS A 220 CYS A 244 1555 1555 2.03 SSBOND 8 CYS A 231 CYS A 252 1555 1555 2.02 SSBOND 9 CYS A 307 CYS A 330 1555 1555 2.04 SSBOND 10 CYS A 343 CYS A 547 1555 1555 2.03 LINK ND2 ASN B 93 C1 NAG B 602 1555 1555 1.44 LINK ND2 ASN B 161 C1 NAG C 1 1555 1555 1.44 LINK ND2 ASN B 211 C1 NAG B 603 1555 1555 1.45 LINK ND2 ASN A 93 C1 NAG A 602 1555 1555 1.44 LINK ND2 ASN A 161 C1 NAG D 1 1555 1555 1.44 LINK O4 NAG C 1 C1 NAG C 2 1555 1555 1.45 LINK O4 NAG D 1 C1 NAG D 2 1555 1555 1.44 CISPEP 1 VAL B 315 PRO B 316 0 -3.51 CISPEP 2 TYR B 403 PRO B 404 0 -0.92 CISPEP 3 VAL A 315 PRO A 316 0 -2.15 CISPEP 4 TYR A 403 PRO A 404 0 -1.01 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 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 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000 CONECT 253 7987 CONECT 402 1870 CONECT 773 7880 CONECT 1175 8001 CONECT 1242 1435 CONECT 1319 1499 CONECT 1435 1242 CONECT 1499 1319 CONECT 1870 402 CONECT 1941 2116 CONECT 2116 1941 CONECT 2215 3939 CONECT 3939 2215 CONECT 4198 8066 CONECT 4347 5815 CONECT 4718 7908 CONECT 5187 5380 CONECT 5264 5444 CONECT 5380 5187 CONECT 5444 5264 CONECT 5815 4347 CONECT 5879 6054 CONECT 6054 5879 CONECT 6153 7877 CONECT 7877 6153 CONECT 7880 773 7881 7891 CONECT 7881 7880 7882 7888 CONECT 7882 7881 7883 7889 CONECT 7883 7882 7884 7890 CONECT 7884 7883 7885 7891 CONECT 7885 7884 7892 CONECT 7886 7887 7888 7893 CONECT 7887 7886 CONECT 7888 7881 7886 CONECT 7889 7882 CONECT 7890 7883 7894 CONECT 7891 7880 7884 CONECT 7892 7885 CONECT 7893 7886 CONECT 7894 7890 7895 7905 CONECT 7895 7894 7896 7902 CONECT 7896 7895 7897 7903 CONECT 7897 7896 7898 7904 CONECT 7898 7897 7899 7905 CONECT 7899 7898 7906 CONECT 7900 7901 7902 7907 CONECT 7901 7900 CONECT 7902 7895 7900 CONECT 7903 7896 CONECT 7904 7897 CONECT 7905 7894 7898 CONECT 7906 7899 CONECT 7907 7900 CONECT 7908 4718 7909 7919 CONECT 7909 7908 7910 7916 CONECT 7910 7909 7911 7917 CONECT 7911 7910 7912 7918 CONECT 7912 7911 7913 7919 CONECT 7913 7912 7920 CONECT 7914 7915 7916 7921 CONECT 7915 7914 CONECT 7916 7909 7914 CONECT 7917 7910 CONECT 7918 7911 7922 CONECT 7919 7908 7912 CONECT 7920 7913 CONECT 7921 7914 CONECT 7922 7918 7923 7933 CONECT 7923 7922 7924 7930 CONECT 7924 7923 7925 7931 CONECT 7925 7924 7926 7932 CONECT 7926 7925 7927 7933 CONECT 7927 7926 7934 CONECT 7928 7929 7930 7935 CONECT 7929 7928 CONECT 7930 7923 7928 CONECT 7931 7924 CONECT 7932 7925 CONECT 7933 7922 7926 CONECT 7934 7927 CONECT 7935 7928 CONECT 7936 7937 7941 CONECT 7937 7936 7938 CONECT 7938 7937 7939 CONECT 7939 7938 7940 7945 CONECT 7940 7939 7941 7943 CONECT 7941 7936 7940 7942 CONECT 7942 7941 CONECT 7943 7940 7944 CONECT 7944 7943 7945 CONECT 7945 7939 7944 7946 CONECT 7946 7945 7947 7956 CONECT 7947 7946 7948 7949 CONECT 7948 7947 CONECT 7949 7947 7950 7955 CONECT 7950 7949 7951 CONECT 7951 7950 7952 7953 7954 CONECT 7952 7951 CONECT 7953 7951 CONECT 7954 7951 CONECT 7955 7949 7956 7957 CONECT 7956 7946 7955 CONECT 7957 7955 7958 CONECT 7958 7957 7959 CONECT 7959 7958 7960 7961 7962 CONECT 7960 7959 CONECT 7961 7959 CONECT 7962 7959 7963 CONECT 7963 7962 7964 7965 7966 CONECT 7964 7963 CONECT 7965 7963 CONECT 7966 7963 7968 CONECT 7967 7968 7969 7970 7971 CONECT 7968 7966 7967 CONECT 7969 7967 CONECT 7970 7967 CONECT 7971 7967 7972 7973 CONECT 7972 7971 CONECT 7973 7971 7974 7975 CONECT 7974 7973 CONECT 7975 7973 7976 CONECT 7976 7975 7977 CONECT 7977 7976 7978 CONECT 7978 7977 7979 7980 CONECT 7979 7978 CONECT 7980 7978 7981 CONECT 7981 7980 7982 CONECT 7982 7981 7983 CONECT 7983 7982 7984 CONECT 7984 7983 7985 7986 CONECT 7985 7984 CONECT 7986 7984 CONECT 7987 253 7988 7998 CONECT 7988 7987 7989 7995 CONECT 7989 7988 7990 7996 CONECT 7990 7989 7991 7997 CONECT 7991 7990 7992 7998 CONECT 7992 7991 7999 CONECT 7993 7994 7995 8000 CONECT 7994 7993 CONECT 7995 7988 7993 CONECT 7996 7989 CONECT 7997 7990 CONECT 7998 7987 7991 CONECT 7999 7992 CONECT 8000 7993 CONECT 8001 1175 8002 8012 CONECT 8002 8001 8003 8009 CONECT 8003 8002 8004 8010 CONECT 8004 8003 8005 8011 CONECT 8005 8004 8006 8012 CONECT 8006 8005 8013 CONECT 8007 8008 8009 8014 CONECT 8008 8007 CONECT 8009 8002 8007 CONECT 8010 8003 CONECT 8011 8004 CONECT 8012 8001 8005 CONECT 8013 8006 CONECT 8014 8007 CONECT 8015 8016 8020 CONECT 8016 8015 8017 CONECT 8017 8016 8018 CONECT 8018 8017 8019 8024 CONECT 8019 8018 8020 8022 CONECT 8020 8015 8019 8021 CONECT 8021 8020 CONECT 8022 8019 8023 CONECT 8023 8022 8024 CONECT 8024 8018 8023 8025 CONECT 8025 8024 8026 8035 CONECT 8026 8025 8027 8028 CONECT 8027 8026 CONECT 8028 8026 8029 8034 CONECT 8029 8028 8030 CONECT 8030 8029 8031 8032 8033 CONECT 8031 8030 CONECT 8032 8030 CONECT 8033 8030 CONECT 8034 8028 8035 8036 CONECT 8035 8025 8034 CONECT 8036 8034 8037 CONECT 8037 8036 8038 CONECT 8038 8037 8039 8040 8041 CONECT 8039 8038 CONECT 8040 8038 CONECT 8041 8038 8042 CONECT 8042 8041 8043 8044 8045 CONECT 8043 8042 CONECT 8044 8042 CONECT 8045 8042 8047 CONECT 8046 8047 8048 8049 8050 CONECT 8047 8045 8046 CONECT 8048 8046 CONECT 8049 8046 CONECT 8050 8046 8051 8052 CONECT 8051 8050 CONECT 8052 8050 8053 8054 CONECT 8053 8052 CONECT 8054 8052 8055 CONECT 8055 8054 8056 CONECT 8056 8055 8057 CONECT 8057 8056 8058 8059 CONECT 8058 8057 CONECT 8059 8057 8060 CONECT 8060 8059 8061 CONECT 8061 8060 8062 CONECT 8062 8061 8063 CONECT 8063 8062 8064 8065 CONECT 8064 8063 CONECT 8065 8063 CONECT 8066 4198 8067 8077 CONECT 8067 8066 8068 8074 CONECT 8068 8067 8069 8075 CONECT 8069 8068 8070 8076 CONECT 8070 8069 8071 8077 CONECT 8071 8070 8078 CONECT 8072 8073 8074 8079 CONECT 8073 8072 CONECT 8074 8067 8072 CONECT 8075 8068 CONECT 8076 8069 CONECT 8077 8066 8070 CONECT 8078 8071 CONECT 8079 8072 MASTER 304 0 9 30 55 0 0 6 8057 2 225 86 END