HEADER CHAPERONE 16-JUL-26 37EI TITLE SOLUTION STRUCTURE OF THE CYS-RICH DOMAIN OF THE 15 KDA SELENOPROTEIN COMPND MOL_ID: 1; COMPND 2 MOLECULE: SELENOPROTEIN F; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: 15 KDA SELENOPROTEIN; 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: SELENOF, SEP15; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: SHUFFLE KEYWDS ENDOPLASMIC RETICULUM, CHAPERONE EXPDTA SOLUTION NMR NUMMDL 20 AUTHOR R.WILLIAMS,L.GIERASCH REVDAT 1 28-OCT-26 37EI 0 JRNL AUTH R.V.WILLIAMS,K.P.GUAY,O.H.LESK,D.N.HEBERT,L.M.GIERASCH JRNL TITL THE CYSTEINE-RICH DOMAIN OF SEP15, A SELENOPROTEIN JRNL TITL 2 CO-CHAPERONE OF THE ER CHAPERONE, UDP-GLUCOSE:GLYCOPROTEIN JRNL TITL 3 GLUCOSYLTRANSFERASE, ADOPTS A NOVEL FOLD. JRNL REF J.BIOL.CHEM. 13629 2026 JRNL REFN ESSN 1083-351X JRNL PMID 42854909 JRNL DOI 10.1016/J.JBC.2026.113629 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : ARIA, CNS REMARK 3 AUTHORS : LINGE, O'DONOGHUE AND NILGES (ARIA), BRUNGER, REMARK 3 ADAMS, CLORE, GROS, NILGES AND READ (CNS) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: CARTESIAN DYNAMICS REMARK 4 REMARK 4 37EI COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 17-JUL-26. REMARK 100 THE DEPOSITION ID IS D_1000309928. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 298 REMARK 210 PH : 6 REMARK 210 IONIC STRENGTH : 100 REMARK 210 PRESSURE : 1 ATM REMARK 210 SAMPLE CONTENTS : 800 UM [U-15N] CRD, 20 MM MES, REMARK 210 100 MM SODIUM CHLORIDE, 10 UM REMARK 210 DSS, 0.02 % W/V SODIUM AZIDE, 95% REMARK 210 H2O/5% D2O; 400 UM CRD, 20 MM REMARK 210 MES, 100 MM SODIUM CHLORIDE, 10 REMARK 210 UM DSS, 0.02 % W/V SODIUM AZIDE, REMARK 210 100% D2O; 800 UM [U-13C; U-15N] REMARK 210 CRD, 20 MM MES, 100 MM SODIUM REMARK 210 CHLORIDE, 10 UM DSS, 0.02 % W/V REMARK 210 SODIUM AZIDE, 100% D2O; 800 UM REMARK 210 [U-13C; U-15N] CRD, 800 UM CRD, REMARK 210 20 MM MES, 100 MM SODIUM REMARK 210 CHLORIDE, 10 UM DSS, 0.02 % W/V REMARK 210 SODIUM AZIDE, 100% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 1D PROTON; 2D 1H-13C HSQC; 2D 1H REMARK 210 -15N HSQC; 3D 1H-13C NOESY; 2D REMARK 210 1H-1H NOESY; 3D HNCA; 3D HN(CO) REMARK 210 CA; 3D HNCACB; 3D CBCA(CO)NH; 3D REMARK 210 HCCH-COSY; 3D HCCH-TOCSY; 3D 1H- REMARK 210 15N TOCSY; 3D 1H-15N NOESY; 3D REMARK 210 1H-13C HALF-FILTERED HALF-EDITED REMARK 210 NOESY; 3D HCCH-COSY AROMATIC REMARK 210 SPECTROMETER FIELD STRENGTH : 600 MHZ; 800 MHZ REMARK 210 SPECTROMETER MODEL : AVANCE III; AVANCE NEO REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : TOPSPIN, NMRFAM-SPARKY, NMRPIPE REMARK 210 METHOD USED : TORSION ANGLE DYNAMICS REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 50 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 20 REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH THE LOWEST REMARK 210 ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1 REMARK 210 REMARK 210 REMARK: NULL REMARK 215 REMARK 215 NMR STUDY REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION REMARK 215 NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON REMARK 215 THESE RECORDS ARE MEANINGLESS. 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: 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 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS 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 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 1 ALA A 3 -52.00 69.79 REMARK 500 1 THR A 51 68.47 65.52 REMARK 500 1 ALA B 3 -51.96 69.47 REMARK 500 1 THR B 51 68.13 66.14 REMARK 500 2 ALA A 3 -55.53 68.27 REMARK 500 2 GLU A 45 -83.87 64.57 REMARK 500 2 ALA A 47 -47.01 -153.39 REMARK 500 2 ALA B 3 -55.74 67.83 REMARK 500 2 GLU B 45 -83.96 64.11 REMARK 500 2 ALA B 47 -47.04 -153.29 REMARK 500 3 ALA A 3 -57.11 69.59 REMARK 500 3 GLU A 45 -89.64 61.06 REMARK 500 3 THR A 51 41.31 -166.96 REMARK 500 3 ALA B 3 -56.90 69.54 REMARK 500 3 GLU B 45 -89.94 60.99 REMARK 500 3 THR B 51 40.84 -166.31 REMARK 500 4 ALA A 3 -9.44 67.51 REMARK 500 4 GLU A 45 -86.71 64.51 REMARK 500 4 ALA B 3 -9.83 67.56 REMARK 500 4 GLU B 45 -86.81 64.26 REMARK 500 5 ALA A 3 -58.88 69.00 REMARK 500 5 GLU A 45 -79.16 65.70 REMARK 500 5 ALA B 3 -58.72 68.84 REMARK 500 5 GLU B 45 -78.54 65.68 REMARK 500 6 ALA A 3 -59.08 68.35 REMARK 500 6 GLU A 45 -62.86 68.42 REMARK 500 6 GLN A 48 50.66 35.74 REMARK 500 6 GLU A 50 72.44 48.79 REMARK 500 6 THR A 51 -37.96 -142.77 REMARK 500 6 ALA B 3 -58.61 68.52 REMARK 500 6 GLU B 45 -62.38 68.88 REMARK 500 6 GLN B 48 50.57 35.78 REMARK 500 6 GLU B 50 72.73 48.88 REMARK 500 6 THR B 51 -38.56 -142.94 REMARK 500 7 ALA A 3 -61.19 66.08 REMARK 500 7 GLU A 46 92.29 63.22 REMARK 500 7 ALA A 47 -72.01 -67.66 REMARK 500 7 ALA B 3 -60.86 66.11 REMARK 500 7 GLU B 46 92.92 63.57 REMARK 500 7 ALA B 47 -71.60 -68.38 REMARK 500 8 ALA A 3 -53.34 69.07 REMARK 500 8 THR A 51 81.32 62.63 REMARK 500 8 ALA B 3 -53.34 68.84 REMARK 500 8 THR B 51 80.96 62.27 REMARK 500 9 ALA A 3 -63.88 66.98 REMARK 500 9 ALA B 3 -64.07 67.23 REMARK 500 10 ALA A 3 -40.97 69.15 REMARK 500 10 GLU A 45 -92.78 63.37 REMARK 500 10 ALA A 47 -43.05 -134.92 REMARK 500 10 ALA B 3 -40.77 69.12 REMARK 500 REMARK 500 THIS ENTRY HAS 106 RAMACHANDRAN OUTLIERS. REMARK 500 REMARK 500 REMARK: NULL REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 31309 RELATED DB: BMRB REMARK 900 SOLUTION STRUTURE OF THE CYS-RICH DOMAIN OF THE 15 KDA SELENOPROTEIN DBREF 37EI A 1 52 UNP O60613 SEP15_HUMAN 32 83 DBREF 37EI B 1 52 UNP O60613 SEP15_HUMAN 32 83 SEQRES 1 A 52 PHE GLY ALA GLU PHE SER SER GLU ALA CYS ARG GLU LEU SEQRES 2 A 52 GLY PHE SER SER ASN LEU LEU CYS SER SER CYS ASP LEU SEQRES 3 A 52 LEU GLY GLN PHE ASN LEU LEU GLN LEU ASP PRO ASP CYS SEQRES 4 A 52 ARG GLY CYS CYS GLN GLU GLU ALA GLN PHE GLU THR LYS SEQRES 1 B 52 PHE GLY ALA GLU PHE SER SER GLU ALA CYS ARG GLU LEU SEQRES 2 B 52 GLY PHE SER SER ASN LEU LEU CYS SER SER CYS ASP LEU SEQRES 3 B 52 LEU GLY GLN PHE ASN LEU LEU GLN LEU ASP PRO ASP CYS SEQRES 4 B 52 ARG GLY CYS CYS GLN GLU GLU ALA GLN PHE GLU THR LYS HELIX 1 AA1 SER A 6 GLY A 14 1 9 HELIX 2 AA2 LEU A 20 ASP A 25 1 6 HELIX 3 AA3 LEU A 26 ASN A 31 5 6 HELIX 4 AA4 LEU A 32 GLN A 34 5 3 HELIX 5 AA5 LEU A 35 CYS A 43 1 9 HELIX 6 AA6 SER B 6 GLY B 14 1 9 HELIX 7 AA7 LEU B 20 ASP B 25 1 6 HELIX 8 AA8 LEU B 26 ASN B 31 5 6 HELIX 9 AA9 LEU B 32 GLN B 34 5 3 HELIX 10 AB1 LEU B 35 CYS B 43 1 9 SSBOND 1 CYS A 10 CYS A 42 1555 1555 2.03 SSBOND 2 CYS A 21 CYS A 43 1555 1555 2.03 SSBOND 3 CYS A 24 CYS A 39 1555 1555 2.03 SSBOND 4 CYS B 10 CYS B 42 1555 1555 2.03 SSBOND 5 CYS B 21 CYS B 43 1555 1555 2.03 SSBOND 6 CYS B 24 CYS B 39 1555 1555 2.03 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 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 MODEL 1 ENDMDL MODEL 2 ENDMDL MODEL 3 ENDMDL MODEL 4 ENDMDL MODEL 5 ENDMDL MODEL 6 ENDMDL MODEL 7 ENDMDL MODEL 8 ENDMDL MODEL 9 ENDMDL MODEL 10 ENDMDL MODEL 11 ENDMDL MODEL 12 ENDMDL MODEL 13 ENDMDL MODEL 14 ENDMDL MODEL 15 ENDMDL MODEL 16 ENDMDL MODEL 17 ENDMDL MODEL 18 ENDMDL MODEL 19 ENDMDL MODEL 20 ENDMDL CONECT 127 599 CONECT 296 609 CONECT 328 558 CONECT 558 328 CONECT 599 127 CONECT 609 296 CONECT 887 1359 CONECT 1056 1369 CONECT 1088 1318 CONECT 1318 1088 CONECT 1359 887 CONECT 1369 1056 MASTER 169 0 0 10 0 0 0 6 796 2 12 8 END