HEADER IMMUNE SYSTEM 27-OCT-25 9YXV TITLE CRYO-EM STRUCTURE OF THE CORE REGION OF CIL-U1A-FAB1R-PGA1-SFFAB TITLE 2 QUATERNARY COMPLEX AT 2.9 A RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: U1A; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES; COMPND 7 MOL_ID: 2; COMPND 8 MOLECULE: HAIRPIN II OF THE U1 SNRNA (U1HPII); COMPND 9 CHAIN: B; COMPND 10 ENGINEERED: YES; COMPND 11 MOL_ID: 3; COMPND 12 MOLECULE: PROTEIN G; COMPND 13 CHAIN: C; COMPND 14 ENGINEERED: YES; COMPND 15 MOL_ID: 4; COMPND 16 MOLECULE: SFFAB18 LIGHT CHAIN; COMPND 17 CHAIN: D; COMPND 18 ENGINEERED: YES; COMPND 19 MOL_ID: 5; COMPND 20 MOLECULE: SFFAB18 HEAVY CHAIN; COMPND 21 CHAIN: E; COMPND 22 ENGINEERED: YES; COMPND 23 MOL_ID: 6; COMPND 24 MOLECULE: FAB1R HEAVY CHAIN; COMPND 25 CHAIN: H; COMPND 26 ENGINEERED: YES; COMPND 27 MOL_ID: 7; COMPND 28 MOLECULE: FAB1R LIGHT CHAIN; COMPND 29 CHAIN: L; COMPND 30 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: SNRPA; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PHFT2; SOURCE 10 MOL_ID: 2; SOURCE 11 SYNTHETIC: YES; SOURCE 12 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 13 ORGANISM_TAXID: 32630; SOURCE 14 MOL_ID: 3; SOURCE 15 ORGANISM_SCIENTIFIC: STREPTOCOCCUS SP. 'GROUP G'; SOURCE 16 ORGANISM_TAXID: 1320; SOURCE 17 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 18 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 19 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 20 EXPRESSION_SYSTEM_PLASMID: PHFT2; SOURCE 21 MOL_ID: 4; SOURCE 22 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 23 ORGANISM_COMMON: HUMAN; SOURCE 24 ORGANISM_TAXID: 9606; SOURCE 25 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 26 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 27 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 28 EXPRESSION_SYSTEM_PLASMID: PSFV4; SOURCE 29 MOL_ID: 5; SOURCE 30 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 31 ORGANISM_COMMON: HUMAN; SOURCE 32 ORGANISM_TAXID: 9606; SOURCE 33 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 34 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 35 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 36 EXPRESSION_SYSTEM_PLASMID: PSFV4; SOURCE 37 MOL_ID: 6; SOURCE 38 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 39 ORGANISM_COMMON: HUMAN; SOURCE 40 ORGANISM_TAXID: 9606; SOURCE 41 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 42 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 43 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 44 EXPRESSION_SYSTEM_PLASMID: PSFV4; SOURCE 45 MOL_ID: 7; SOURCE 46 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 47 ORGANISM_COMMON: HUMAN; SOURCE 48 ORGANISM_TAXID: 9606; SOURCE 49 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 50 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 51 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 52 EXPRESSION_SYSTEM_PLASMID: PSFV4 KEYWDS ANTIBODY, FAB, RNA, RIBOZYME, U1A, RIBONUCLEOPROTEIN (SNRNP) COMPLEX, KEYWDS 2 IMMUNE SYSTEM EXPDTA ELECTRON MICROSCOPY AUTHOR E.V.FILIPPOVA,A.A.KOSSIAKOFF REVDAT 1 27-MAY-26 9YXV 0 JRNL AUTH E.V.FILIPPOVA,D.KROCHMAL,S.MUKHERJEE,J.A.PICCIRILLI, JRNL AUTH 2 A.A.KOSSIAKOFF JRNL TITL A UNIVERSAL FAB TARGETING A CONSERVED U1A-RNA EPITOPE FOR JRNL TITL 2 RNA STRUCTURE DETERMINATION BY CRYO-EM JRNL REF NUCLEIC ACIDS RES. V. 54 2026 JRNL REFN ESSN 1362-4962 JRNL DOI 10.1093/NAR/GKAG502 REMARK 2 REMARK 2 RESOLUTION. 2.90 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 SOFTWARE PACKAGES : CRYOSPARC, EPU, CRYOSPARC, UCSF REMARK 3 CHIMERA, PHENIX, COOT, CRYOSPARC REMARK 3 RECONSTRUCTION SCHEMA : FOURIER SPACE REMARK 3 REMARK 3 EM MAP-MODEL FITTING AND REFINEMENT REMARK 3 PDB ENTRY : 3HHN REMARK 3 REFINEMENT SPACE : REAL REMARK 3 REFINEMENT PROTOCOL : RIGID BODY FIT REMARK 3 REFINEMENT TARGET : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE : NULL 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) : 2.900 REMARK 3 NUMBER OF PARTICLES : 430597 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: FSC 0.143 CUT-OFF OBTAINED FROM CRYOSPARC REMARK 4 REMARK 4 9YXV COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-OCT-25. REMARK 100 THE DEPOSITION ID IS D_1000301555. 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 : CIL-U1A-FAB1R-PGA1-SFFAB18 REMARK 245 QUATERNARY COMPLEX 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 : CORE REGION REMARK 245 REMARK 245 DATA ACQUISITION REMARK 245 DATE OF EXPERIMENT : NULL REMARK 245 NUMBER OF MICROGRAPHS-IMAGES : 10696 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) : 900.00 REMARK 245 MAXIMUM DEFOCUS (NM) : 2500.00 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) : 6000.00 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: HEPTAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D, E, H, L 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 ALA A 2 REMARK 465 VAL A 3 REMARK 465 PRO A 4 REMARK 465 GLU A 5 REMARK 465 THR A 6 REMARK 465 A B 1001 REMARK 465 C B 1002 REMARK 465 C B 1003 REMARK 465 G B 1016 REMARK 465 G B 1017 REMARK 465 U B 1018 REMARK 465 THR C 2 REMARK 465 PRO C 3 REMARK 465 ALA C 4 REMARK 465 PRO C 63 REMARK 465 GLU C 64 REMARK 465 LYS C 65 REMARK 465 LEU C 66 REMARK 465 GLY C 67 REMARK 465 GLY C 68 REMARK 465 ILE D -24 REMARK 465 MET D -23 REMARK 465 LYS D -22 REMARK 465 LYS D -21 REMARK 465 ASN D -20 REMARK 465 ILE D -19 REMARK 465 ALA D -18 REMARK 465 PHE D -17 REMARK 465 LEU D -16 REMARK 465 LEU D -15 REMARK 465 ALA D -14 REMARK 465 SER D -13 REMARK 465 MET D -12 REMARK 465 PHE D -11 REMARK 465 VAL D -10 REMARK 465 PHE D -9 REMARK 465 SER D -8 REMARK 465 ILE D -7 REMARK 465 ALA D -6 REMARK 465 THR D -5 REMARK 465 ASN D -4 REMARK 465 ALA D -3 REMARK 465 TYR D -2 REMARK 465 ALA D -1 REMARK 465 SER D 0 REMARK 465 ARG D 108 REMARK 465 THR D 109 REMARK 465 VAL D 110 REMARK 465 ALA D 111 REMARK 465 ALA D 112 REMARK 465 PRO D 113 REMARK 465 SER D 114 REMARK 465 VAL D 115 REMARK 465 PHE D 116 REMARK 465 ILE D 117 REMARK 465 PHE D 118 REMARK 465 PRO D 119 REMARK 465 PRO D 120 REMARK 465 SER D 121 REMARK 465 ASP D 122 REMARK 465 GLU D 123 REMARK 465 GLN D 124 REMARK 465 LEU D 125 REMARK 465 LYS D 126 REMARK 465 SER D 127 REMARK 465 GLY D 128 REMARK 465 THR D 129 REMARK 465 ALA D 130 REMARK 465 SER D 131 REMARK 465 VAL D 132 REMARK 465 VAL D 133 REMARK 465 CYS D 134 REMARK 465 LEU D 135 REMARK 465 LEU D 136 REMARK 465 ASN D 137 REMARK 465 ASN D 138 REMARK 465 PHE D 139 REMARK 465 TYR D 140 REMARK 465 PRO D 141 REMARK 465 ARG D 142 REMARK 465 GLU D 143 REMARK 465 ALA D 144 REMARK 465 LYS D 145 REMARK 465 VAL D 146 REMARK 465 GLN D 147 REMARK 465 TRP D 148 REMARK 465 LYS D 149 REMARK 465 VAL D 150 REMARK 465 ASP D 151 REMARK 465 ASN D 152 REMARK 465 ALA D 153 REMARK 465 LEU D 154 REMARK 465 GLN D 155 REMARK 465 SER D 156 REMARK 465 GLY D 157 REMARK 465 ASN D 158 REMARK 465 SER D 159 REMARK 465 GLN D 160 REMARK 465 GLU D 161 REMARK 465 SER D 162 REMARK 465 VAL D 163 REMARK 465 THR D 164 REMARK 465 GLU D 165 REMARK 465 GLN D 166 REMARK 465 ASP D 167 REMARK 465 SER D 168 REMARK 465 LYS D 169 REMARK 465 ASP D 170 REMARK 465 SER D 171 REMARK 465 THR D 172 REMARK 465 TYR D 173 REMARK 465 SER D 174 REMARK 465 LEU D 175 REMARK 465 SER D 176 REMARK 465 SER D 177 REMARK 465 THR D 178 REMARK 465 LEU D 179 REMARK 465 THR D 180 REMARK 465 LEU D 181 REMARK 465 SER D 182 REMARK 465 LYS D 183 REMARK 465 ALA D 184 REMARK 465 ASP D 185 REMARK 465 TYR D 186 REMARK 465 GLU D 187 REMARK 465 LYS D 188 REMARK 465 HIS D 189 REMARK 465 LYS D 190 REMARK 465 VAL D 191 REMARK 465 TYR D 192 REMARK 465 ALA D 193 REMARK 465 CYS D 194 REMARK 465 GLU D 195 REMARK 465 VAL D 196 REMARK 465 THR D 197 REMARK 465 HIS D 198 REMARK 465 GLN D 199 REMARK 465 GLY D 200 REMARK 465 LEU D 201 REMARK 465 SER D 202 REMARK 465 SER D 203 REMARK 465 PRO D 204 REMARK 465 VAL D 205 REMARK 465 THR D 206 REMARK 465 LYS D 207 REMARK 465 SER D 208 REMARK 465 PHE D 209 REMARK 465 ASN D 210 REMARK 465 ARG D 211 REMARK 465 GLY D 212 REMARK 465 GLU D 213 REMARK 465 CYS D 214 REMARK 465 MET E -25 REMARK 465 LYS E -24 REMARK 465 LYS E -23 REMARK 465 ASN E -22 REMARK 465 ILE E -21 REMARK 465 ALA E -20 REMARK 465 PHE E -19 REMARK 465 LEU E -18 REMARK 465 LEU E -17 REMARK 465 ALA E -16 REMARK 465 SER E -15 REMARK 465 MET E -14 REMARK 465 PHE E -13 REMARK 465 VAL E -12 REMARK 465 PHE E -11 REMARK 465 SER E -10 REMARK 465 ILE E -9 REMARK 465 ALA E -8 REMARK 465 THR E -7 REMARK 465 ASN E -6 REMARK 465 ALA E -5 REMARK 465 TYR E -4 REMARK 465 ALA E -3 REMARK 465 GLU E -2 REMARK 465 ILE E -1 REMARK 465 SER E 0 REMARK 465 SER E 113 REMARK 465 ALA E 114 REMARK 465 SER E 115 REMARK 465 THR E 116 REMARK 465 LYS E 117 REMARK 465 GLY E 118 REMARK 465 PRO E 119 REMARK 465 SER E 120 REMARK 465 VAL E 121 REMARK 465 PHE E 122 REMARK 465 PRO E 123 REMARK 465 LEU E 124 REMARK 465 ALA E 125 REMARK 465 PRO E 126 REMARK 465 SER E 127 REMARK 465 SER E 128 REMARK 465 LYS E 129 REMARK 465 SER E 130 REMARK 465 THR E 131 REMARK 465 SER E 132 REMARK 465 GLY E 133 REMARK 465 GLY E 134 REMARK 465 THR E 135 REMARK 465 ALA E 136 REMARK 465 ALA E 137 REMARK 465 LEU E 138 REMARK 465 GLY E 139 REMARK 465 CYS E 140 REMARK 465 LEU E 141 REMARK 465 VAL E 142 REMARK 465 LYS E 143 REMARK 465 ASP E 144 REMARK 465 TYR E 145 REMARK 465 PHE E 146 REMARK 465 PRO E 147 REMARK 465 GLU E 148 REMARK 465 PRO E 149 REMARK 465 VAL E 150 REMARK 465 THR E 151 REMARK 465 VAL E 152 REMARK 465 SER E 153 REMARK 465 TRP E 154 REMARK 465 ASN E 155 REMARK 465 SER E 156 REMARK 465 GLY E 157 REMARK 465 ALA E 158 REMARK 465 LEU E 159 REMARK 465 THR E 160 REMARK 465 SER E 161 REMARK 465 GLY E 162 REMARK 465 VAL E 163 REMARK 465 HIS E 164 REMARK 465 THR E 165 REMARK 465 PHE E 166 REMARK 465 PRO E 167 REMARK 465 ALA E 168 REMARK 465 VAL E 169 REMARK 465 LEU E 170 REMARK 465 GLN E 171 REMARK 465 SER E 172 REMARK 465 SER E 173 REMARK 465 GLY E 174 REMARK 465 LEU E 175 REMARK 465 TYR E 176 REMARK 465 SER E 177 REMARK 465 LEU E 178 REMARK 465 UNK E 179 REMARK 465 SER E 180 REMARK 465 VAL E 181 REMARK 465 VAL E 182 REMARK 465 THR E 183 REMARK 465 VAL E 184 REMARK 465 PRO E 185 REMARK 465 SER E 186 REMARK 465 SER E 187 REMARK 465 SER E 188 REMARK 465 LEU E 189 REMARK 465 GLY E 190 REMARK 465 THR E 191 REMARK 465 GLN E 192 REMARK 465 THR E 193 REMARK 465 TYR E 194 REMARK 465 ILE E 195 REMARK 465 CYS E 196 REMARK 465 THR E 197 REMARK 465 GLY H -28 REMARK 465 ASP H -27 REMARK 465 PHE H -26 REMARK 465 MET H -25 REMARK 465 LYS H -24 REMARK 465 LYS H -23 REMARK 465 ASN H -22 REMARK 465 ILE H -21 REMARK 465 ALA H -20 REMARK 465 PHE H -19 REMARK 465 LEU H -18 REMARK 465 LEU H -17 REMARK 465 ALA H -16 REMARK 465 SER H -15 REMARK 465 MET H -14 REMARK 465 PHE H -13 REMARK 465 VAL H -12 REMARK 465 PHE H -11 REMARK 465 SER H -10 REMARK 465 ILE H -9 REMARK 465 ALA H -8 REMARK 465 THR H -7 REMARK 465 ASN H -6 REMARK 465 ALA H -5 REMARK 465 TYR H -4 REMARK 465 ALA H -3 REMARK 465 GLU H -2 REMARK 465 ILE H -1 REMARK 465 SER H 0 REMARK 465 SER H 130 REMARK 465 THR H 131 REMARK 465 SER H 132 REMARK 465 GLY H 133 REMARK 465 LYS H 214 REMARK 465 SER H 215 REMARK 465 CYS H 216 REMARK 465 ASP H 217 REMARK 465 LYS H 218 REMARK 465 THR H 219 REMARK 465 HIS H 220 REMARK 465 THR H 221 REMARK 465 ALA L -6 REMARK 465 GLN L -5 REMARK 465 PRO L -4 REMARK 465 ALA L -3 REMARK 465 MET L -2 REMARK 465 ALA L -1 REMARK 465 SER L 0 REMARK 465 GLU L 211 REMARK 465 CYS L 212 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 LYS A 96 48.33 -93.21 REMARK 500 SER D 30 -126.50 51.89 REMARK 500 SER D 50 18.56 59.60 REMARK 500 ALA D 51 -7.18 67.42 REMARK 500 MET D 92 -110.68 70.90 REMARK 500 PRO D 95 80.46 -65.68 REMARK 500 SER H 31 53.24 -95.27 REMARK 500 PRO H 52A 45.61 -81.79 REMARK 500 SER L 31 40.52 -105.19 REMARK 500 ALA L 51 -7.22 71.17 REMARK 500 ALA L 84 -168.99 -160.06 REMARK 500 PRO L 95 108.70 -58.46 REMARK 500 REMARK 500 REMARK: NULL REMARK 610 REMARK 610 MISSING HETEROATOM REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 610 I=INSERTION CODE): REMARK 610 M RES C SSEQI REMARK 610 DMU A 101 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: EMD-73618 RELATED DB: EMDB REMARK 900 CRYO-EM STRUCTURE OF THE CORE REGION OF CIL-U1A-FAB1R-PGA1-SFFAB REMARK 900 QUATERNARY COMPLEX AT 2.9 A RESOLUTION DBREF 9YXV A 2 98 UNP P09012 SNRPA_HUMAN 2 98 DBREF 9YXV B 1001 1018 PDB 9YXV 9YXV 1001 1018 DBREF 9YXV C 2 68 PDB 9YXV 9YXV 2 68 DBREF 9YXV D -24 214 PDB 9YXV 9YXV -24 214 DBREF 9YXV E -25 197 PDB 9YXV 9YXV -25 197 DBREF 9YXV H -28 221 PDB 9YXV 9YXV -28 221 DBREF 9YXV L -6 212 PDB 9YXV 9YXV -6 212 SEQADV 9YXV HIS A 31 UNP P09012 TYR 31 ENGINEERED MUTATION SEQADV 9YXV ARG A 36 UNP P09012 GLN 36 ENGINEERED MUTATION SEQRES 1 A 97 ALA VAL PRO GLU THR ARG PRO ASN HIS THR ILE TYR ILE SEQRES 2 A 97 ASN ASN LEU ASN GLU LYS ILE LYS LYS ASP GLU LEU LYS SEQRES 3 A 97 LYS SER LEU HIS ALA ILE PHE SER ARG PHE GLY GLN ILE SEQRES 4 A 97 LEU ASP ILE LEU VAL SER ARG SER LEU LYS MET ARG GLY SEQRES 5 A 97 GLN ALA PHE VAL ILE PHE LYS GLU VAL SER SER ALA THR SEQRES 6 A 97 ASN ALA LEU ARG SER MET GLN GLY PHE PRO PHE TYR ASP SEQRES 7 A 97 LYS PRO MET ARG ILE GLN TYR ALA LYS THR ASP SER ASP SEQRES 8 A 97 ILE ILE ALA LYS MET LYS SEQRES 1 B 18 A C C C A U U G C A C U C SEQRES 2 B 18 C G G G U SEQRES 1 C 67 THR PRO ALA VAL THR THR TYR LYS LEU VAL ILE ASN GLY SEQRES 2 C 67 ARG THR LEU SER GLY TYR THR THR THR THR ALA VAL ASP SEQRES 3 C 67 ALA ALA THR ALA GLU LYS VAL PHE LYS GLN TYR ALA TYR SEQRES 4 C 67 VAL HIS GLU VAL ASP GLY GLU TRP THR TYR ASP ASP ALA SEQRES 5 C 67 THR LYS THR PHE THR VAL THR GLU LYS PRO GLU LYS LEU SEQRES 6 C 67 GLY GLY SEQRES 1 D 239 ILE MET LYS LYS ASN ILE ALA PHE LEU LEU ALA SER MET SEQRES 2 D 239 PHE VAL PHE SER ILE ALA THR ASN ALA TYR ALA SER ASP SEQRES 3 D 239 ILE GLN MET THR GLN SER PRO SER SER LEU SER ALA SER SEQRES 4 D 239 VAL GLY ASP ARG VAL THR ILE THR CYS ARG ALA SER GLN SEQRES 5 D 239 SER VAL SER SER ALA VAL ALA TRP TYR GLN GLN LYS PRO SEQRES 6 D 239 GLY LYS ALA PRO LYS LEU LEU ILE TYR SER ALA SER SER SEQRES 7 D 239 LEU TYR SER GLY VAL PRO SER ARG PHE SER GLY SER ARG SEQRES 8 D 239 SER GLY THR ASP PHE THR LEU THR ILE SER SER LEU GLN SEQRES 9 D 239 PRO GLU ASP PHE ALA THR TYR TYR CYS GLN GLN THR MET SEQRES 10 D 239 THR TYR PRO ILE THR PHE GLY GLN GLY THR LYS VAL GLU SEQRES 11 D 239 ILE LYS ARG THR VAL ALA ALA PRO SER VAL PHE ILE PHE SEQRES 12 D 239 PRO PRO SER ASP GLU GLN LEU LYS SER GLY THR ALA SER SEQRES 13 D 239 VAL VAL CYS LEU LEU ASN ASN PHE TYR PRO ARG GLU ALA SEQRES 14 D 239 LYS VAL GLN TRP LYS VAL ASP ASN ALA LEU GLN SER GLY SEQRES 15 D 239 ASN SER GLN GLU SER VAL THR GLU GLN ASP SER LYS ASP SEQRES 16 D 239 SER THR TYR SER LEU SER SER THR LEU THR LEU SER LYS SEQRES 17 D 239 ALA ASP TYR GLU LYS HIS LYS VAL TYR ALA CYS GLU VAL SEQRES 18 D 239 THR HIS GLN GLY LEU SER SER PRO VAL THR LYS SER PHE SEQRES 19 D 239 ASN ARG GLY GLU CYS SEQRES 1 E 234 MET LYS LYS ASN ILE ALA PHE LEU LEU ALA SER MET PHE SEQRES 2 E 234 VAL PHE SER ILE ALA THR ASN ALA TYR ALA GLU ILE SER SEQRES 3 E 234 GLU VAL GLN LEU VAL GLU SER GLY GLY GLY LEU VAL GLN SEQRES 4 E 234 PRO GLY GLY SER LEU ARG LEU SER CYS ALA ALA SER GLY SEQRES 5 E 234 PHE ASN PHE ALA SER ALA SER ILE HIS TRP VAL ARG GLN SEQRES 6 E 234 ALA PRO GLY LYS GLY LEU GLU TRP VAL ALA SER ILE TYR SEQRES 7 E 234 SER TYR SER GLY TYR THR TYR TYR ALA ASP SER VAL LYS SEQRES 8 E 234 GLY ARG PHE THR ILE SER ALA ASP THR SER LYS ASN THR SEQRES 9 E 234 ALA TYR LEU GLN MET ASN SER LEU ARG ALA GLU ASP THR SEQRES 10 E 234 ALA VAL TYR TYR CYS ALA ARG ASN TYR ASP TYR PRO TYR SEQRES 11 E 234 TRP TYR SER GLU GLU ALA PHE ASP TYR TRP GLY GLN GLY SEQRES 12 E 234 THR LEU VAL THR VAL SER SER ALA SER THR LYS GLY PRO SEQRES 13 E 234 SER VAL PHE PRO LEU ALA PRO SER SER LYS SER THR SER SEQRES 14 E 234 GLY GLY THR ALA ALA LEU GLY CYS LEU VAL LYS ASP TYR SEQRES 15 E 234 PHE PRO GLU PRO VAL THR VAL SER TRP ASN SER GLY ALA SEQRES 16 E 234 LEU THR SER GLY VAL HIS THR PHE PRO ALA VAL LEU GLN SEQRES 17 E 234 SER SER GLY LEU TYR SER LEU UNK SER VAL VAL THR VAL SEQRES 18 E 234 PRO SER SER SER LEU GLY THR GLN THR TYR ILE CYS THR SEQRES 1 H 264 GLY ASP PHE MET LYS LYS ASN ILE ALA PHE LEU LEU ALA SEQRES 2 H 264 SER MET PHE VAL PHE SER ILE ALA THR ASN ALA TYR ALA SEQRES 3 H 264 GLU ILE SER GLU VAL GLN LEU VAL GLU SER GLY GLY GLY SEQRES 4 H 264 LEU VAL GLN PRO GLY GLY SER LEU ARG LEU SER CYS ALA SEQRES 5 H 264 ALA SER GLY PHE ASN ILE TYR SER SER SER ILE HIS TRP SEQRES 6 H 264 VAL ARG GLN ALA PRO GLY LYS GLY LEU GLU TRP VAL ALA SEQRES 7 H 264 SER ILE TYR PRO TYR SER GLY TYR THR SER TYR ALA ASP SEQRES 8 H 264 SER VAL LYS GLY ARG PHE THR ILE SER ALA ASP THR SER SEQRES 9 H 264 LYS ASN THR ALA TYR LEU GLN MET ASN SER LEU ARG ALA SEQRES 10 H 264 GLU ASP THR ALA VAL TYR TYR CYS ALA ARG SER PRO TRP SEQRES 11 H 264 GLY TRP PHE TRP GLN TYR GLY GLN TYR SER VAL ALA LEU SEQRES 12 H 264 ASP TYR TRP GLY GLN GLY THR LEU VAL THR VAL SER SER SEQRES 13 H 264 ALA SER THR LYS GLY PRO SER VAL PHE PRO LEU ALA PRO SEQRES 14 H 264 SER SER LYS SER THR SER GLY GLY THR ALA ALA LEU GLY SEQRES 15 H 264 CYS LEU VAL LYS ASP TYR PHE PRO GLU PRO VAL THR VAL SEQRES 16 H 264 SER TRP ASN SER GLY ALA LEU THR SER GLY VAL HIS THR SEQRES 17 H 264 PHE PRO ALA VAL LEU GLN SER SER GLY LEU TYR SER LEU SEQRES 18 H 264 SER SER VAL VAL THR VAL PRO SER SER SER LEU GLY THR SEQRES 19 H 264 GLN THR TYR ILE CYS ASN VAL ASN HIS LYS PRO SER ASN SEQRES 20 H 264 THR LYS VAL ASP LYS LYS VAL GLU PRO LYS SER CYS ASP SEQRES 21 H 264 LYS THR HIS THR SEQRES 1 L 219 ALA GLN PRO ALA MET ALA SER ASP ILE GLN MET THR GLN SEQRES 2 L 219 SER PRO SER SER LEU SER ALA SER VAL GLY ASP ARG VAL SEQRES 3 L 219 THR ILE THR CYS ARG ALA SER GLN SER VAL SER SER ALA SEQRES 4 L 219 VAL ALA TRP TYR GLN GLN LYS PRO GLY LYS ALA PRO LYS SEQRES 5 L 219 LEU LEU ILE TYR SER ALA SER SER LEU TYR SER GLY VAL SEQRES 6 L 219 PRO SER ARG PHE SER GLY SER ARG SER GLY THR ASP PHE SEQRES 7 L 219 THR LEU THR ILE SER SER LEU GLN PRO GLU ASP PHE ALA SEQRES 8 L 219 THR TYR TYR CYS GLN GLN SER SER PHE TYR PRO ILE THR SEQRES 9 L 219 PHE GLY GLN GLY THR LYS VAL GLU ILE LYS ARG THR VAL SEQRES 10 L 219 ALA ALA PRO SER VAL PHE ILE PHE PRO PRO SER ASP LEU SEQRES 11 L 219 ARG THR GLY THR ALA SER VAL VAL CYS LEU LEU ASN ASN SEQRES 12 L 219 PHE TYR PRO ARG GLU ALA LYS VAL GLN TRP LYS VAL ASP SEQRES 13 L 219 ASN ALA LEU GLN SER GLY ASN SER GLN GLU SER VAL THR SEQRES 14 L 219 GLU GLN ASP SER LYS ASP SER THR TYR SER LEU SER SER SEQRES 15 L 219 THR LEU THR LEU SER LYS ALA ASP TYR GLU LYS HIS LYS SEQRES 16 L 219 VAL TYR ALA CYS GLU VAL THR HIS GLN GLY LEU SER SER SEQRES 17 L 219 PRO VAL THR LYS SER PHE ASN ARG GLY GLU CYS HET DMU A 101 26 HETNAM DMU DECYL-BETA-D-MALTOPYRANOSIDE HETSYN DMU DECYLMALTOSIDE FORMUL 8 DMU C22 H42 O11 HELIX 1 AA1 LYS A 22 SER A 35 1 14 HELIX 2 AA2 ARG A 36 GLY A 38 5 3 HELIX 3 AA3 GLU A 61 GLN A 73 1 13 HELIX 4 AA4 SER A 91 LYS A 96 1 6 HELIX 5 AA5 ASP C 27 HIS C 42 1 16 HELIX 6 AA6 GLN D 79 PHE D 83 5 5 HELIX 7 AA7 ASN E 28 SER E 31 5 4 HELIX 8 AA8 ARG E 83 THR E 87 5 5 HELIX 9 AA9 ARG H 83 THR H 87 5 5 HELIX 10 AB1 TRP H 97 TRP H 100A 5 5 HELIX 11 AB2 SER H 187 LEU H 189 5 3 HELIX 12 AB3 LYS H 201 ASN H 204 5 4 HELIX 13 AB4 GLN L 79 PHE L 83 5 5 HELIX 14 AB5 ASP L 122 THR L 125 5 4 HELIX 15 AB6 LYS L 181 GLU L 185 1 5 SHEET 1 AA1 4 ILE A 40 VAL A 45 0 SHEET 2 AA1 4 ALA A 55 PHE A 59 -1 O PHE A 56 N LEU A 44 SHEET 3 AA1 4 THR A 11 ASN A 15 -1 N ILE A 14 O ALA A 55 SHEET 4 AA1 4 ARG A 83 TYR A 86 -1 O GLN A 85 N TYR A 13 SHEET 1 AA2 7 THR C 49 ASP C 51 0 SHEET 2 AA2 7 THR C 56 VAL C 59 -1 O THR C 58 N THR C 49 SHEET 3 AA2 7 THR C 6 ASN C 13 1 N LYS C 9 O PHE C 57 SHEET 4 AA2 7 LEU C 17 ALA C 25 -1 O THR C 23 N TYR C 8 SHEET 5 AA2 7 THR H 205 VAL H 211 -1 O ASP H 208 N SER C 18 SHEET 6 AA2 7 TYR H 194 HIS H 200 -1 N VAL H 198 O VAL H 207 SHEET 7 AA2 7 THR H 151 TRP H 154 -1 N SER H 153 O ASN H 197 SHEET 1 AA3 4 MET D 4 SER D 7 0 SHEET 2 AA3 4 VAL D 19 ALA D 25 -1 O ARG D 24 N THR D 5 SHEET 3 AA3 4 ASP D 70 ILE D 75 -1 O LEU D 73 N ILE D 21 SHEET 4 AA3 4 PHE D 62 SER D 67 -1 N SER D 63 O THR D 74 SHEET 1 AA4 6 SER D 10 ALA D 13 0 SHEET 2 AA4 6 THR D 102 ILE D 106 1 O GLU D 105 N LEU D 11 SHEET 3 AA4 6 THR D 85 GLN D 90 -1 N TYR D 86 O THR D 102 SHEET 4 AA4 6 VAL D 33 GLN D 38 -1 N ALA D 34 O GLN D 89 SHEET 5 AA4 6 LYS D 45 TYR D 49 -1 O LYS D 45 N GLN D 37 SHEET 6 AA4 6 SER D 53 LEU D 54 -1 O SER D 53 N TYR D 49 SHEET 1 AA5 4 GLN E 3 SER E 7 0 SHEET 2 AA5 4 SER E 17 SER E 25 -1 O SER E 21 N SER E 7 SHEET 3 AA5 4 THR E 77 ASN E 82A-1 O MET E 82 N LEU E 18 SHEET 4 AA5 4 PHE E 67 ASP E 72 -1 N SER E 70 O TYR E 79 SHEET 1 AA6 6 LEU E 11 VAL E 12 0 SHEET 2 AA6 6 THR E 107 VAL E 111 1 O THR E 110 N VAL E 12 SHEET 3 AA6 6 ALA E 88 ASN E 95 -1 N TYR E 90 O THR E 107 SHEET 4 AA6 6 SER E 33 GLN E 39 -1 N VAL E 37 O TYR E 91 SHEET 5 AA6 6 LEU E 45 TYR E 52 -1 O ALA E 49 N TRP E 36 SHEET 6 AA6 6 THR E 57 TYR E 59 -1 O TYR E 58 N SER E 50 SHEET 1 AA7 4 LEU E 11 VAL E 12 0 SHEET 2 AA7 4 THR E 107 VAL E 111 1 O THR E 110 N VAL E 12 SHEET 3 AA7 4 ALA E 88 ASN E 95 -1 N TYR E 90 O THR E 107 SHEET 4 AA7 4 PHE E 100G TRP E 103 -1 O TYR E 102 N ARG E 94 SHEET 1 AA8 4 GLN H 3 SER H 7 0 SHEET 2 AA8 4 GLY H 16 SER H 25 -1 O ALA H 23 N VAL H 5 SHEET 3 AA8 4 THR H 77 LEU H 82C-1 O MET H 82 N LEU H 18 SHEET 4 AA8 4 PHE H 67 ASP H 72 -1 N SER H 70 O TYR H 79 SHEET 1 AA9 6 LEU H 11 VAL H 12 0 SHEET 2 AA9 6 THR H 107 VAL H 111 1 O THR H 110 N VAL H 12 SHEET 3 AA9 6 ALA H 88 ARG H 94 -1 N TYR H 90 O THR H 107 SHEET 4 AA9 6 ILE H 34 GLN H 39 -1 N HIS H 35 O ALA H 93 SHEET 5 AA9 6 LEU H 45 ILE H 51 -1 O VAL H 48 N TRP H 36 SHEET 6 AA9 6 THR H 57 TYR H 59 -1 O SER H 58 N SER H 50 SHEET 1 AB1 4 SER H 120 LEU H 124 0 SHEET 2 AB1 4 THR H 135 TYR H 145 -1 O GLY H 139 N LEU H 124 SHEET 3 AB1 4 TYR H 176 PRO H 185 -1 O VAL H 182 N LEU H 138 SHEET 4 AB1 4 VAL H 163 THR H 165 -1 N HIS H 164 O VAL H 181 SHEET 1 AB2 4 SER H 120 LEU H 124 0 SHEET 2 AB2 4 THR H 135 TYR H 145 -1 O GLY H 139 N LEU H 124 SHEET 3 AB2 4 TYR H 176 PRO H 185 -1 O VAL H 182 N LEU H 138 SHEET 4 AB2 4 VAL H 169 LEU H 170 -1 N VAL H 169 O SER H 177 SHEET 1 AB3 4 MET L 4 SER L 7 0 SHEET 2 AB3 4 VAL L 19 ALA L 25 -1 O ARG L 24 N THR L 5 SHEET 3 AB3 4 ASP L 70 ILE L 75 -1 O LEU L 73 N ILE L 21 SHEET 4 AB3 4 PHE L 62 SER L 67 -1 N SER L 63 O THR L 74 SHEET 1 AB4 6 SER L 10 ALA L 13 0 SHEET 2 AB4 6 THR L 102 ILE L 106 1 O GLU L 105 N ALA L 13 SHEET 3 AB4 6 THR L 85 GLN L 89 -1 N TYR L 86 O THR L 102 SHEET 4 AB4 6 ALA L 34 GLN L 38 -1 N GLN L 38 O THR L 85 SHEET 5 AB4 6 LYS L 45 TYR L 49 -1 O LEU L 47 N TRP L 35 SHEET 6 AB4 6 SER L 53 LEU L 54 -1 O SER L 53 N TYR L 49 SHEET 1 AB5 4 SER L 114 PHE L 118 0 SHEET 2 AB5 4 THR L 127 PHE L 137 -1 O LEU L 133 N PHE L 116 SHEET 3 AB5 4 TYR L 171 SER L 180 -1 O LEU L 177 N VAL L 130 SHEET 4 AB5 4 SER L 157 VAL L 161 -1 N GLN L 158 O THR L 176 SHEET 1 AB6 4 ALA L 151 LEU L 152 0 SHEET 2 AB6 4 LYS L 143 VAL L 148 -1 N VAL L 148 O ALA L 151 SHEET 3 AB6 4 VAL L 189 THR L 195 -1 O GLU L 193 N GLN L 145 SHEET 4 AB6 4 VAL L 203 ASN L 208 -1 O VAL L 203 N VAL L 194 SSBOND 1 CYS D 23 CYS D 88 1555 1555 2.03 SSBOND 2 CYS E 22 CYS E 92 1555 1555 2.03 SSBOND 3 CYS H 22 CYS H 92 1555 1555 2.03 SSBOND 4 CYS H 140 CYS H 196 1555 1555 2.03 SSBOND 5 CYS L 23 CYS L 88 1555 1555 2.03 SSBOND 6 CYS L 132 CYS L 192 1555 1555 2.03 CISPEP 1 SER D 7 PRO D 8 0 -2.63 CISPEP 2 PHE H 146 PRO H 147 0 -2.19 CISPEP 3 GLU H 148 PRO H 149 0 -2.56 CISPEP 4 SER L 7 PRO L 8 0 -3.77 CISPEP 5 TYR L 138 PRO L 139 0 3.13 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 1627 2124 CONECT 2124 1627 CONECT 2427 3005 CONECT 3005 2427 CONECT 3391 3969 CONECT 3969 3391 CONECT 4375 4789 CONECT 4789 4375 CONECT 5089 5586 CONECT 5586 5089 CONECT 5919 6398 CONECT 6398 5919 CONECT 6536 6537 6541 6547 CONECT 6537 6536 6538 6548 CONECT 6538 6537 6539 6542 CONECT 6539 6538 6540 6549 CONECT 6540 6539 6541 CONECT 6541 6536 6540 6543 CONECT 6542 6538 6556 CONECT 6543 6541 6544 CONECT 6544 6543 6545 CONECT 6545 6544 6546 CONECT 6546 6545 CONECT 6547 6536 CONECT 6548 6537 CONECT 6549 6539 6550 CONECT 6550 6549 CONECT 6551 6552 6556 6558 CONECT 6552 6551 6553 6559 CONECT 6553 6552 6554 6557 CONECT 6554 6553 6555 6560 CONECT 6555 6554 6556 CONECT 6556 6542 6551 6555 CONECT 6557 6553 CONECT 6558 6551 CONECT 6559 6552 CONECT 6560 6554 6561 CONECT 6561 6560 MASTER 457 0 1 15 71 0 0 6 6554 7 38 91 END