RNA Structure

Tree Topology: 3_1


Topological Aspects

  • 3 Vertices


  • Eigenvalues
  • 0.0000000000
    1.0000000000
    3.0000000000


Examples of actual RNAs corresponding to this structure from RNA databases: 481

PDB_Chain Type Discovery Method
17RA_ARNASOLUTION NMR
1A3M_AB16S RRNA (5'-R(*GP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*USOLUTION NMR
1A4D_ABRNA (5'-R(*GP*GP*CP*CP*GP*AP*UP*GP*GP*UP*AP*GP*UP*SOLUTION NMR
1A51_A5S RRNA LOOP D/LOOP ESOLUTION NMR
1A60_ATYMV PSEUDOKNOTSOLUTION NMR
1AJU_ATAR RNASOLUTION NMR
1AKX_ATAR RNASOLUTION NMR
1ARJ_NTAR RNASOLUTION NMR
1AUD_BRNA 3UTRSOLUTION NMR
1B36_ARNA (RNA LOOP B)SOLUTION NMR
1BAU_ABSL1 RNA DIMERSOLUTION NMR
1BGZ_ARNASOLUTION NMR
1BIV_ABOVINE IMMUNODEFICIENCY VIRUS TAT-TAR COMPLEXSOLUTION NMR
1BYJ_ARNA (16S RNA)SOLUTION NMR
1CSL_BAHIV-1 RREX-RAY DIFFRACTION
1D6K_B5S RRNA E-LOOP (5SE)SOLUTION NMR
1DFU_MN5S RRNAX-RAY DIFFRACTION
1DZ5_CDPIE, RNA (5'-R(*GP*AP*GP*AP*CP*AP*UP*UP*GP*CP*AP*CSOLUTION NMR
1E4P_ARNA (5'-R(*GP*UP*GP*CP*GP*AP*AP*GP*AP*CP*GP*AP*AP*SOLUTION NMR
1EBQ_AHIV-1 REV RESPONSIVE ELEMENT RNASOLUTION NMR
1EBR_AHIV-1 REV RESPONSIVE ELEMENT RNASOLUTION NMR
1EBS_AHIV-1 REV RESPONSIVE ELEMENT RNASOLUTION NMR
1ESY_ARNA (5'-R(P*GP*GP*CP*GP*AP*CP*UP*GP*GP*UP*GP*AP*GPSOLUTION NMR
1ETF_AREV RESPONSE ELEMENT RNASOLUTION NMR
1ETG_AREV RESPONSIVE ELEMENT RNASOLUTION NMR
1F6U_BHIV-1 STEM-LOOP SL2 FROM PSI-RNA PACKAGINGSOLUTION NMR
1F84_AHCV-1B IRES RNA DOMAIN IIIDSOLUTION NMR
1F9L_A5'-R(*GP*GP*CP*GP*AP*AP*GP*UP*CP*GP*AP*AP*AP*GP*APSOLUTION NMR
1FEU_CBFRAGMENT OF 5S RRNAX-RAY DIFFRACTION
1FMN_ARNA (5'-R(*GP*GP*CP*GP*UP*GP*UP*AP*GP*GP*AP*UP*AP*SOLUTION NMR
1FQZ_AHEPATITIS C VIRUS IRES DOMAIN IIIDSOLUTION NMR
1FUF_AB(5'-R(*GP*GP*UP*AP*UP*UP*UP*CP*GP*GP*UP*AP*(CBR)P*X-RAY DIFFRACTION
1FYO_AFRAGMENT OF 18S RIBOSOMAL RNASOLUTION NMR
1FYP_AFRAGMENT OF 18S RIBOSOMAL RNASOLUTION NMR
1G70_AHIV-1 RRE-IIB 32 NUCLEOTIDE RNASOLUTION NMR
1HWQ_AVS RIBOZYME SUBSTRATE RNASOLUTION NMR
1I6U_C16S RRNA FRAGMENTX-RAY DIFFRACTION
1I9F_AREV RESPONSE ELEMENT RNASOLUTION NMR
1IE2_A 5'-R(*GP*GP*CP*CP*GP*AP*AP*AP*UP*CP*CP*CP*GP*AP*ASOLUTION NMR
1J7T_AB5'-R(*CP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UP*GPX-RAY DIFFRACTION
1JID_BHELIX 6 OF HUMAN SRP RNAX-RAY DIFFRACTION
1JO7_AInfluenza A virus promoter RNASOLUTION NMR
1JU1_ABHIV-1Lai SL1SOLUTION NMR
1JUR_A5'-R(*GP*GP*CP*CP*UP*GP*AP*GP*GP*AP*GP*AP*CP*UP*CPSOLUTION NMR
1K2G_A5'-R(*CP*AP*GP*AP*CP*UP*UP*CP*GP*GP*UP*CP*GP*CP*APSOLUTION NMR
1KD3_AB5'-R(*GP*GP*UP*CP*AP*CP*AP*GP*CP*CP*C)-3'X-RAY DIFFRACTION
1KD4_AB5'-R(*GP*GP*UP*CP*AP*CP*AP*GP*CP*CP*C)-3'X-RAY DIFFRACTION
1KD5_AB5'-R(*GP*GP*UP*CP*AP*CP*AP*GP*CP*CP*C)-3'X-RAY DIFFRACTION
1KOG_OTHREONYL-TRNA SYNTHETASE MRNAX-RAY DIFFRACTION
1KP7_AHepatitis C Virus Internal Ribosome Entry Site FraSOLUTION NMR
1L1W_A SRP19 BINDING DOMAIN OF SRP RNASOLUTION NMR
1LC4_AB5'-R(*UP*UP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UPX-RAY DIFFRACTION
1LC6_AU6 Intramolecular Stem-loop RNASOLUTION NMR
1LDZ_A LEAD-DEPENDENT RIBOZYMESOLUTION NMR
1LVJ_AHIV-1 Trans Activating Region RNASOLUTION NMR
1M82_ARNA (25-MER): THE COMPLEMENTARY RNA PROMOTER OF INSOLUTION NMR
1MFY_AC4 promoter of influneza A virusSOLUTION NMR
1MJI_D5S RRNA FRAGMENTX-RAY DIFFRACTION
1MNB_BBIV TAR RNASOLUTION NMR
1MNX_ALoop E from 5S rRNASOLUTION NMR
1MUV_AB5'-R(*GP*GP*CP*AP*AP*GP*CP*CP*U)-3'SOLUTION NMR
1MV1_AB5'-R(*GP*GP*CP*(P5P)P*AP*GP*CP*CP*U)-3'SOLUTION NMR
1MV2_AB5'-R(*GP*GP*CP*AP*(P5P)P*GP*CP*CP*U)-3'SOLUTION NMR
1MV6_AB5'-R(*GP*GP*CP*(P5P)P*(P5P)P*GP*CP*CP*U)-3SOLUTION NMR
1MWL_AB5'-R(*CP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UP*GPX-RAY DIFFRACTION
1N66_Ainternal loop in the Y-domain of poliovirus 3'UTRSOLUTION NMR
1N8X_AHIV-1 STEM LOOP SL1 MONOMERIC RNASOLUTION NMR
1NA2_Atelomerase RNA p2b hairpinSOLUTION NMR
1NJP_5tRNA acceptor stem mimicX-RAY DIFFRACTION
1NLC_BAHIV-1 DIS(MAL) genomic RNAX-RAY DIFFRACTION
1NUJ_CD5'-R(*CP*GP*GP*AP*CP*CP*GP*AP*GP*CP*CP*AP*G)-3'X-RAY DIFFRACTION
1NUV_EF5'-R(*CP*GP*GP*AP*CP*CP*GP*AP*GP*CP*CP*AP*G)-3'X-RAY DIFFRACTION
1NZ1_ASP U6 Intramolecular Stem-Loop RNASOLUTION NMR
1O3Z_BAHIV-1 DIS(MAL) GENOMIC RNAX-RAY DIFFRACTION
1O9M_ABEUBACTERIAL A-SITEX-RAY DIFFRACTION
1OSW_A5'-R(*GP*GP*AP*GP*GP*CP*GP*CP*UP*AP*CP*GP*GP*CP*GPSOLUTION NMR
1OW9_AA mimic of the VS Ribozyme Hairpin SubstrateSOLUTION NMR
1P5N_A34-MERSOLUTION NMR
1PBR_A16S RIBOSOMAL RNASOLUTION NMR
1QBP_AB5'-R(*UP*GP*(CBV)P*(CBV)P*AP*GP*UP*UP*CP*GP*CP*UP*X-RAY DIFFRACTION
1QD3_AHIV-1 TAR RNASOLUTION NMR
1R2P_A34-MERSOLUTION NMR
1R3E_DE5'-R(*CP*UP*GP*UP*GP*UP*(FHU)P*CP*GP*AP*UP*CP*CP*AX-RAY DIFFRACTION
1R7W_A34-MERSOLUTION NMR
1R7Z_A34-MERSOLUTION NMR
1RAW_ARNA APTAMERSOLUTION NMR
1RFR_Astemloop-D RNA of the 5'-cloverleaf of coxsackieviSOLUTION NMR
1RLG_D25-MERX-RAY DIFFRACTION
1RY1_OPSRP RNAELECTRON MICROSCOPY
1S03_B47-MERX-RAY DIFFRACTION
1SY4_AU6 Intramolecular Stem-Loop RNASOLUTION NMR
1SYZ_AU6 INTRAMOLECULAR STEM-LOOP RNASOLUTION NMR
1T0D_CD5'-R(*CP*AP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*AP*CP*CPX-RAY DIFFRACTION
1T0E_AC5'-R(*GP*GP*UP*GP*GP*UP*GP*AP*AP*GP*UP*CP*GP*CP*UPX-RAY DIFFRACTION
1T0K_DC5'-R(*G*GP*AP*CP*GP*CP*AP*GP*AP*GP*AP*UP*GP*GP*UP*X-RAY DIFFRACTION
1T28_A34-MERSOLUTION NMR
1TJZ_AVS RibozymeSOLUTION NMR
1TLR_ARNA TETRALOOP RECEPTOR (5'-R(GGCCUAAGACUUCGGUUAUGGSOLUTION NMR
1U63_D49 NT FRAGMENT OF MRNA FOR L1X-RAY DIFFRACTION
1UTS_BRNA (5'-(*GP*GP*CP*AP*GP*AP*UP*CP*UP*GP*AP*GP*CP*CSOLUTION NMR
1UUD_BRNA (5'-(*GP*GP*CP*AP*GP*AP*UP*CP*UP*GP*AP*GP*CP*CSOLUTION NMR
1UUI_B5'-R(*GP*GP*CP*AP*GP*AP*UP*CP*UP*GP*AP*GP*CP* CP*USOLUTION NMR
1WVD_BA5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*GP*GP*UP*GP*CP*AP*CPX-RAY DIFFRACTION
1X9C_DCAB5'-R(*UP*CP*GP*UP*GP*GP*UP*AP*CP*AP*UP*UP*AP*CP*CPX-RAY DIFFRACTION
1XHP_AU6 snRNASOLUTION NMR
1XP7_AB5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*UP*GP*CP*AP*CPX-RAY DIFFRACTION
1XPE_AB5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*CP*GP*CP*GP*CPX-RAY DIFFRACTION
1XPF_AB5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*CP*GP*CP*GP*CPX-RAY DIFFRACTION
1XV0_AB'-R(*GP*GP*UP*GP*GP*AP*GP*GP*CP*U)-3'SOLUTION NMR
1Y3O_AB5'-R(*CP*UP*(5BU)P*GP*CP*UP*GP*AP*AP*GP*UP*GP*CP*AX-RAY DIFFRACTION
1Y3S_AB5'-R(*CP*UP*(5BU)P*GP*CP*UP*GP*AP*AP*GP*UP*GP*CP*AX-RAY DIFFRACTION
1Y6S_BA5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*GP*GP*UP*GP*CP*AP*CPX-RAY DIFFRACTION
1Y6T_BA5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*GP*GP*UP*GP*CP*AP*CPX-RAY DIFFRACTION
1Y73_BA5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*GP*GP*UP*GP*CP*AP*CPX-RAY DIFFRACTION
1Y90_BA5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*GP*GP*UP*GP*CP*AP*CPX-RAY DIFFRACTION
1Y95_BA5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*GP*GP*UP*GP*CP*AP*CPX-RAY DIFFRACTION
1Y99_AB5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*GP*GP*UP*GP*CP*AP*CPX-RAY DIFFRACTION
1YKQ_DDIELS-ALDER RIBOZYMEX-RAY DIFFRACTION
1YKV_DDiels-Alder ribozymeX-RAY DIFFRACTION
1YLG_Aapolipoprotein B mRNASOLUTION NMR
1YNC_Aapolipoprotein B mRNASOLUTION NMR
1YNE_AAPOLIPOPROTEIN B MRNASOLUTION NMR
1YNG_Aapolipoprotein B mRNASOLUTION NMR
1YSH_FRNA (34-MER)ELECTRON MICROSCOPY
1YXP_AB5'-R(*CP*UP*(5BU)P*GP*CP*UP*GP*AP*AP*GP*UP*GP*CP*AX-RAY DIFFRACTION
1YZ9_CDEF5'-R(*CP*GP*AP*AP*CP*UP*UP*CP*GP*CP*G)-3'X-RAY DIFFRACTION
1Z2J_AHIV-1 frameshift site RNASOLUTION NMR
1Z31_Ahuman telomerase PJ6 hairpinSOLUTION NMR
1ZBN_ABIV TAR hairpin complexed to JDV TatSOLUTION NMR
1ZC5_AHIV-1 frameshift RNA signalSOLUTION NMR
1ZCI_AB5'-R(*CP*(5BU)P*UP*GP*CP*UP*GP*AP*AP*GP*UP*GP*CP*AX-RAY DIFFRACTION
1ZFT_DCABHairpin RibozymeX-RAY DIFFRACTION
1ZFV_DCABHairpin RibozymeX-RAY DIFFRACTION
1ZFX_DCABHairpin RibozymeX-RAY DIFFRACTION
1ZHO_DMRNAX-RAY DIFFRACTION
28SP_ACONSERVED MOTIF IN SRP RNASOLUTION NMR
28SR_ASRP DOMAIN IVSOLUTION NMR
299D_BARNA HAMMERHEAD RIBOZYMEX-RAY DIFFRACTION
2A9X_2BIV TAR RNASOLUTION NMR
2ADT_B43-MERSOLUTION NMR
2AHT_A27-MERSOLUTION NMR
2AU4_AClass I RNA aptamer to GTPSOLUTION NMR
2B63_R31-MERX-RAY DIFFRACTION
2B8R_AB5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*CP*GP*CP*GP*CPX-RAY DIFFRACTION
2B8S_AB5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*CP*GP*CP*GP*CPX-RAY DIFFRACTION
2BCY_DCABHairpin RibozymeX-RAY DIFFRACTION
2BCZ_DCABHairpin RibozymeX-RAY DIFFRACTION
2BE0_AB5'-R(*CP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UP*GPX-RAY DIFFRACTION
2BEE_AB5'-R(*CP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UP*GPX-RAY DIFFRACTION
2D18_AB5'-R(*GP*CP*UP*GP*AP*AP*GP*UP*GP*CP*AP*CP*AP*CP*GPSOLUTION NMR
2D1B_ARNASOLUTION NMR
2D2K_DCABHairpin RibozymeX-RAY DIFFRACTION
2D2L_DCABHairpin RibozymeX-RAY DIFFRACTION
2DD1_AB5'-R(*GP*GP*UP*GP*GP*AP*GP*GP*CP*U)-3'SOLUTION NMR
2DD2_AB5'-R(*GP*GP*UP*GP*AP*AP*GP*GP*CP*U)-3'SOLUTION NMR
2DD3_AB5'-R(*GP*GP*UP*GP*AP*AP*GP*GP*CP*U)-3'SOLUTION NMR
2DR5_B TRNA (32-MER)X-RAY DIFFRACTION
2ESI_AB5'-R(*UP*UP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UPX-RAY DIFFRACTION
2ESJ_AB5'-R(*UP*UP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UPX-RAY DIFFRACTION
2ET3_AB5'-R(*CP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UP*GPX-RAY DIFFRACTION
2ET4_AB5'-R(*CP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UP*GPX-RAY DIFFRACTION
2ET5_AB5'-R(*CP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UP*GPX-RAY DIFFRACTION
2ET8_AB5'-R(*CP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UP*GPX-RAY DIFFRACTION
2EUY_AU65 box H/ACA snoRNASOLUTION NMR
2F4S_AB5'-R(P*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UP*GP*AX-RAY DIFFRACTION
2F4U_AB5'-R(P*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UP*GP*AX-RAY DIFFRACTION
2F4X_AB5'-R(P*GP*GP*UP*UP*GP*CP*UP*GP*AP*AP*GP*CP*GP*CP*GSOLUTION NMR
2F88_A D5-PL RNA RIBOZYME DOMAINSOLUTION NMR
2FCX_ABHIV-1 DIS RNAX-RAY DIFFRACTION
2FCY_ABHIV-1 DIS RNAX-RAY DIFFRACTION
2FCZ_ABHIV-1 DIS RNAX-RAY DIFFRACTION
2FD0_ABHIV-1 DIS RNAX-RAY DIFFRACTION
2FDT_A36-merSOLUTION NMR
2FGP_DCABHairpin RibozymeX-RAY DIFFRACTION
2FQN_AB5'-R(*UP*UP*GP*CP*GP*UP*CP*GP*CP*UP*CP*CP*GP*GP*APX-RAY DIFFRACTION
2GIO_A29-MER SOLUTION NMR
2GIP_A28-MERSOLUTION NMR
2GRW_A 5'-GGACCUCUCGAAAGAGAUGUCC-3'SOLUTION NMR
2H1M_AB5'-R(*GP*CP*AP*(XUG)P*AP*GP*UP*UP*AP*AP*AP*UP*CP*UX-RAY DIFFRACTION
2HEM_A5'-R(P*GP*GP*GP*AP*AP*GP*GP*CP*GP*CP*UP*UP*CP*GP*GSOLUTION NMR
2HVY_EH/ACA RNAX-RAY DIFFRACTION
2HW8_B36-MERX-RAY DIFFRACTION
2I7E_B43-MERSOLUTION NMR
2I7Z_B43-MERSOLUTION NMR
2IL9_ARIBOSOMAL BINDING DOMAIN OF THE IRES RNAX-RAY DIFFRACTION
2IRN_AB5'-R(P*GP*CP*UP*GP*AP*GP*GP*CP*U)-3'SOLUTION NMR
2IRO_AB5'-R(P*GP*CP*GP*GP*AP*UP*GP*CP*U)-3'SOLUTION NMR
2JSE_ARNA (5'-R(*GP*GP*AP*GP*UP*GP*GP*CP*CP*GP*AP*AP*AP*SOLUTION NMR
2JTP_ASIV17-50 RNA (34-MER)SOLUTION NMR
2JWV_ARNA (29-MER)SOLUTION NMR
2JXV_ARNA (33-MER)SOLUTION NMR
2JYF_ARNA (43-MER)SOLUTION NMR
2JYH_BRNA (43-MER)SOLUTION NMR
2JYJ_ARNA (43-MER)SOLUTION NMR
2KDQ_BHIV-1 TAR RNASOLUTION NMR
2KEZ_A RNA (5'-R(*GP*GP*UP*UP*CP*CP*CP*CP*UP*GP*CP*AP*UPSOLUTION NMR
2KF0_ARNA (5'-R(*GP*GP*UP*UP*CP*CP*CP*CP*UP*GP*CP*AP*UP*SOLUTION NMR
2KMJ_ARNA (28-MER)SOLUTION NMR
2KPV_ARNA (34-MER)SOLUTION NMR
2KUR_A K10 TLS RNASOLUTION NMR
2KUW_AK10 TLS RNASOLUTION NMR
2KX5_AHIV TAR RNASOLUTION NMR
2KXM_ARNA (27-MER)SOLUTION NMR
2KXZ_AB5'-R(*GP*AP*CP*AP*AP*GP*UP*GP*UP*CP*A)-3'SOLUTION NMR
2KY0_AB5'-R(*GP*AP*CP*GP*AP*GP*CP*GP*UP*CP*A)-3'SOLUTION NMR
2KY1_AB5'-R(*GP*AP*CP*UP*AP*GP*AP*GP*UP*CP*A)-3'SOLUTION NMR
2KY2_AB5'-R(*GP*GP*UP*AP*GP*GP*CP*CP*A)-3'SOLUTION NMR
2L3E_A35-MERSOLUTION NMR
2L5Z_A RNA (26-MER)SOLUTION NMR
2L8F_ABRNA (5'-R(*GP*UP*GP*AP*AP*GP*CP*CP*CP*GP*U)-3')SOLUTION NMR
2L8H_AHIV TAR RNASOLUTION NMR
2L94_ARNA_(45-MER)SOLUTION NMR
2LDT_ARNA (31-MER)SOLUTION NMR
2LDZ_ALEAD-DEPENDENT RIBOZYMESOLUTION NMR
2LHP_ARNA (37-MER)SOLUTION NMR
2LJJ_AIV-B RNASOLUTION NMR
2LK3_ARNA (5'-R(*GP*GP*CP*UP*UP*AP*GP*AP*UP*CP*AP*GP*AP*SOLUTION NMR
2LPS_A RNA (34-MER)SOLUTION NMR
2LPT_ARNA_(34-MER)SOLUTION NMR
2LQZ_ARNA (27-MER)SOLUTION NMR
2LUB_ARNA (37-MER)SOLUTION NMR
2LUN_ARNA (28-MER)SOLUTION NMR
2LWK_ARNA (32-MER)SOLUTION NMR
2LX1_ABRNA (5'-R(*GP*AP*CP*GP*AP*GP*UP*GP*UP*CP*A)-3')SOLUTION NMR
2M4Q_1 RNA (27-MER)SOLUTION NMR
2M4W_ARNA (5'-R(*GP*GP*AP*AP*UP*CP*GP*AP*AP*AP*GP*AP*UP*SOLUTION NMR
2MIS_AVS RibozymeSOLUTION NMR
2MIY_ARNA_(59-MER)SOLUTION NMR
2MXL_ARNA (39-MER)SOLUTION NMR
2MXS_ARNA (27-MER)SOLUTION NMR
2N0J_ARNA_(27-MER)SOLUTION NMR
2N6X_ARNA (43-MER)SOLUTION NMR
2N7X_ARNA (5'-R(*GP*GP*UP*AP*GP*UP*UP*UP*UP*GP*GP*CP*AP*SOLUTION NMR
2N8V_XRNA (70-MER)SOLUTION NMR
2NBZ_AIRES RNA 40-MERSOLUTION NMR
2NC0_AIRES RNA (28-MER)SOLUTION NMR
2NCI_ARNA (28-MER)SOLUTION NMR
2NPY_DCABHairpin RibozymeX-RAY DIFFRACTION
2NPZ_DCABHairpin RibozymeX-RAY DIFFRACTION
2NRE_Fleucyl tRNAX-RAY DIFFRACTION
2NUG_EFCD5'-R(P*AP*AP*GP*GP*UP*CP*AP*UP*UP*CP*G)-3'X-RAY DIFFRACTION
2O32_A 5'-R(*(PSU)P*CP*UP*CP*(OMG)P*(OMG)P*CP*CP*(PSU)SOLUTION NMR
2O33_AU2 snRNASOLUTION NMR
2O3V_ABRNA (5'-R(*UP*UP*GP*CP*GP*UP*CP*GP*CP*UP*CP*CP*GP*X-RAY DIFFRACTION
2O3W_ABRNA (5'-R(*UP*UP*GP*CP*GP*UP*CP*GP*CP*UP*CP*CP*GP*X-RAY DIFFRACTION
2O3X_ABRNA (5'-R(*UP*UP*GP*CP*GP*UP*CP*GP*CP*UP*CP*CP*GP*X-RAY DIFFRACTION
2O3Y_ABRNA (5'-R(*UP*UP*GP*CP*GP*UP*CP*GP*CP*UP*CP*CP*GP*X-RAY DIFFRACTION
2O81_AB5'-R(*GP*CP*(IG)P*GP*AP*(IC)P*GP*CP*A)-3'SOLUTION NMR
2O83_AB5'-R(*GP*GP*(IC)P*GP*AP*(IG)P*CP*CP*A)-3'SOLUTION NMR
2OE5_BARNA (5'-R(*CP*GP*GP*UP*AP*CP*UP*AP*AP*AP*AP*GP*UP*X-RAY DIFFRACTION
2OE6_BARNA (5'-R(*CP*GP*GP*UP*AP*CP*UP*AP*AP*AP*AP*GP*UP*X-RAY DIFFRACTION
2OE8_BARNA (5'-R(*CP*GP*GP*UP*AP*CP*UP*AP*AP*AP*AP*GP*UP*X-RAY DIFFRACTION
2OIJ_AB5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*CP*GP*CP*GP*CPX-RAY DIFFRACTION
2OIY_AB5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*CP*GP*CP*GP*CPX-RAY DIFFRACTION
2OJ0_AB5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*CP*GP*CP*GP*CPX-RAY DIFFRACTION
2OUE_DCABHairpin RibozymeX-RAY DIFFRACTION
2OZB_CRNA comprising the 5' Stem-Loop RNA of U4snRNAX-RAY DIFFRACTION
2P7F_DCABHairpin RibozymeX-RAY DIFFRACTION
2P89_AU65 H/ACA snoRNASOLUTION NMR
2PCW_AU65 box H/ACA snoRNASOLUTION NMR
2PWT_AB22-mer of the ribosomal decoding siteX-RAY DIFFRACTION
2QEK_ABHIV-1 subtype F DIS genomic RNAX-RAY DIFFRACTION
2QUW_BHammerhead ribozyme, cleaved fragmentX-RAY DIFFRACTION
2RVO_ARNA (34-MER)SOLUTION NMR
2VPL_BFRAGMENT OF MRNA FOR L1-OPERON CONTAINING REGULATOX-RAY DIFFRACTION
2WW9_F25S RRNAELECTRON MICROSCOPY
2WWA_F25S RRNAELECTRON MICROSCOPY
2WWB_F25S RRNAELECTRON MICROSCOPY
2XEB_AB5'-R(P*GP*AP*UP*CP*GP*UP*AP*GP*CP*CP*AP*AP*UP*GP*ASOLUTION NMR
300D_BARNA HAMMERHEAD RIBOZYMEX-RAY DIFFRACTION
301D_BARNA HAMMERHEAD RIBOZYMEX-RAY DIFFRACTION
359D_BARNA HAMMERHEAD RIBOZYMEX-RAY DIFFRACTION
397D_ABRNA (5'-R(*GP*GP*CP*CP*AP*GP*AP*UP*CP*UP*GP*AP*GP*X-RAY DIFFRACTION
3AGV_U5'-R(*GP*GP*AP*GP*GP*(UFT)P*GP*(CFZ)P*(UFT)P*(CFZ)X-RAY DIFFRACTION
3AVV_TGviral RNA polymerase complex 3X-RAY DIFFRACTION
3B0V_AtRNAX-RAY DIFFRACTION
3B58_BCAHairpin RibozymeX-RAY DIFFRACTION
3B5A_BCAHairpin RibozymeX-RAY DIFFRACTION
3B5F_BCAHairpin RibozymeX-RAY DIFFRACTION
3B5S_BCA29-mer Loop A and Loop B Ribozyme strandX-RAY DIFFRACTION
3B91_BCAHairpin RibozymeX-RAY DIFFRACTION
3BBI_BCAHairpin RibozymeX-RAY DIFFRACTION
3BBK_BCAHairpin RibozymeX-RAY DIFFRACTION
3BBM_BCAHairpin RibozymeX-RAY DIFFRACTION
3BNN_CDA site of human ribosomeX-RAY DIFFRACTION
3BNO_ABA site of human mitochondrial ribosomeX-RAY DIFFRACTION
3BNP_ABA site of bacterial ribosomeX-RAY DIFFRACTION
3C44_ABHIV-1 subtype F genomic RNAX-RAY DIFFRACTION
3CGP_BARNA (5'-R(*GP*CP*GP*CP*GP*(PSU)P*AP*GP*UP*AP*GP*C)X-RAY DIFFRACTION
3CGQ_BARNA (5'-R(*GP*CP*GP*CP*GP*(PSU)P*AP*GP*UP*AP*GP*C)X-RAY DIFFRACTION
3CGR_BARNA (5'-R(*GP*CP*GP*CP*GP*(PSU)P*AP*GP*UP*AP*GP*C)X-RAY DIFFRACTION
3CGS_BARNA (5'-R(*GP*CP*GP*CP*GP*(PSU)P*AP*GP*UP*AP*GP*C)X-RAY DIFFRACTION
3CJZ_ABRNA (5'-R(*GP*GP*AP*CP*GP*(M2G)P*AP*CP*GP*UP*CP*CPX-RAY DIFFRACTION
3CQS_ABCHairpin RibozymeX-RAY DIFFRACTION
3CR1_ABCHairpin RibozymeX-RAY DIFFRACTION
3DD2_BRNA (26-MER)X-RAY DIFFRACTION
3DH3_FEstem loop fragment of E. Coli 23S RNAX-RAY DIFFRACTION
3DKN_DERNA (5'-R(P*CP*GP*UP*GP*CP*CP*AP*AP*GP*CP*UP*GP*CPELECTRON MICROSCOPY
3DKN_FRNA (32-MER)ELECTRON MICROSCOPY
3DVV_ABHIV-1 genomic RNAX-RAY DIFFRACTION
3FAR_ABRNA (5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*AP*GP*CP*GP*CP*X-RAY DIFFRACTION
3FS0_BA5'-R(*GP*GP*UP*GP*AP*GP*GP*CP*UP*G)-3'X-RAY DIFFRA3_1
3FTE_CD5'-R(P*AP*AP*CP*CP*GP*UP*AP*GP*GP*GP*GP*AP*AP*CP*CX-RAY DIFFRACTION
3FTF_CD5'-R(P*AP*AP*CP*CP*GP*UP*AP*GP*GP*GP*GP*AP*AP*CP*CX-RAY DIFFRACTION
3FTM_DC5'-R(*CP*CP*AP*GP*UP*CP*GP*GP*AP*AP*CP*A)-3'X-RAY DIFFRACTION
3GS1_DCABHairpin RibozymeX-RAY DIFFRACTION
3GS8_DCABHairpin RibozymeX-RAY DIFFRACTION
3HAX_EH/ACA RNAX-RAY DIFFRACTION
3HAY_EH/ACA RNAX-RAY DIFFRACTION
3HJW_D RNA (58-MER)X-RAY DIFFRACTION
3I2Q_ABCHairpin RibozymeX-RAY DIFFRACTION
3I2R_ABCHairpin RibozymeX-RAY DIFFRACTION
3I2S_ABCHairpin RibozymeX-RAY DIFFRACTION
3I2U_ABCHairpin RibozymeX-RAY DIFFRACTION
3IAB_RP3 domain of the RNA component of RNase MRPX-RAY DIFFRACTION
3ICQ_ERNA (62-MER)X-RAY DIFFRACTION
3J0D_hHribosomal 16S RNAELECTRON MICROSCOPY
3J0E_eEribosomal 16S RNAELECTRON MICROSCOPY
3J0L_760S RIBOSOMAL RNA FRAGMENTELECTRON MICROSCOPY
3J0O_760S ribosomal RNA fragmentELECTRON MICROSCOPY
3J0P_760S RIBOSOMAL RNA FRAGMENTELECTRON MICROSCOPY
3J0P_YTRNAELECTRON MICROSCOPY
3J0Q_760S RIBOSOMAL RNA FRAGMENTELECTRON MICROSCOPY
3J46_223S RIBOSOMAL RNAELECTRON MICROSCOPY
3J7R_S6P/E tRNAELECTRON MICROSCOPY
3LWO_DH/ACA RNAX-RAY DIFFRACTION
3LWP_DH/ACA RNAX-RAY DIFFRACTION
3LWQ_DH/ACA RNAX-RAY DIFFRACTION
3LWR_DH/ACA RNAX-RAY DIFFRACTION
3LWV_DH/ACA RNAX-RAY DIFFRACTION
3MEI_ABRNA (5'-R(*CP*CP*GP*CP*CP*GP*CP*GP*CP*CP*AP*(5BU)PX-RAY DIFFRACTION
3NPN_AS-ADENOSYLHOMOCYSTEINE RIBOSWITCHX-RAY DIFFRACTION
3NPQ_AS-ADENOSYLHOMOCYSTEINE RIBOSWITCHX-RAY DIFFRACTION
3OL7_JNKOLPRNA (5'-R(*AP*AP*GP*UP*CP*UP*CP*CP*AP*GP*GP*UP*CP*X-RAY DIFFRACTION
3OL8_JNKOLPRNA (5'-R(*AP*AP*GP*UP*CP*UP*CP*CP*AP*GP*GP*UP*CP*X-RAY DIFFRACTION
3OLA_JKLRNA (5'-R(*AP*AP*GP*UP*CP*UP*CP*CP*AP*GP*GP*UP*CP*X-RAY DIFFRACTION
3P22_ACORE ENE HAIRPIN FROM KSHV PAN RNAX-RAY DIFFRACTION
3Q3Z_Vc-di-GMP-II riboswitchX-RAY DIFFRACTION
3R2D_RS5'-R(*GP*GP*CP*UP*CP*CP*UP*UP*GP*GP*CP*A)-3'X-RAY DIFFRACTION
3S4P_ABRNA (5'-R(P*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UPX-RAY DIFFRACTION
3SIU_FU4atac snRNAX-RAY DIFFRACTION
3SNP_Dferritin H IRE RNAX-RAY DIFFRACTION
3VRS_AFLUORIDE RIBOSWITCHX-RAY DIFFRACTION
3WBM_XYRNA (25-MER)X-RAY DIFFRACTION
3WRU_ABRNA (5'-R(*UP*UP*GP*CP*GP*UP*CP*AP*CP*GP*CP*CP*GP*X-RAY DIFFRACTION
3ZN8_G4.5 S RNAELECTRON MICROSCOPY
422D_AB5'-R(*GP*AP*UP*CP*AP*CP*UP*UP*CP*GP*GP*U)-3'X-RAY DIFFRACTION
429D_CDRNA (5'-R(*CP*GP*GP*AP*CP*CP*GP*AP*GP*CP*CP*AP*G)-X-RAY DIFFRACTION
462D_BARNA (5'-R(*CP*UP*UP*GP*CP*UP*GP*AP*GP*GP*UP*GP*CP*X-RAY DIFFRACTION
484D_BRNA APTAMERSOLUTION NMR
4BW0_AHMKT-7X-RAY DIFFRACTION
4BY9_ASSR26SOLUTION NMR
4C4W_HTSKT-23X-RAY DIFFRACTION
4C7O_ESRP RNAX-RAY DIFFRACTION
4CXG_228S RRNA - H89ELECTRON MICROSCOPY
4CXH_228S RRNA - H89ELECTRON MICROSCOPY
4EN5_AFLUORIDE RIBOSWITCHX-RAY DIFFRACTION
4ENA_AFLUORIDE RIBOSWITCHX-RAY DIFFRACTION
4ENB_AFluoride riboswitchX-RAY DIFFRACTION
4ENC_AFLUORIDE RIBOSWITCHX-RAY DIFFRACTION
4EYA_efRNA (5'-R(*GP*GP*CP*UP*CP*CP*UP*UP*GP*GP*CP*A)-3')X-RAY DIFFRACTION
4F8U_ABRNA (5'-R(P*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UPX-RAY DIFFRACTION
4F8V_ABRNA (5'-R(P*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UPX-RAY DIFFRACTION
4G6P_BCAHairpin RibozymeX-RAY DIFFRACTION
4G6R_DCABHairpin RibozymeX-RAY DIFFRACTION
4G6S_BCAHairpin RibozymeX-RAY DIFFRACTION
4GCW_BTRNA(THR)X-RAY DIFFRACTION
4GPX_ABRNA (5'-R(*UP*UP*GP*CP*GP*UP*CP*AP*CP*GP*CP*CP*GP*X-RAY DIFFRACTION
4K32_ABRNA (5'-R(*UP*UP*GP*CP*GP*UP*CP*GP*UP*UP*CP*CP*GP*X-RAY DIFFRACTION
4K4Z_FGHRNA (5'-R(*AP*AP*GP*UP*CP*UP*CP*CP*AP*GP*GP*UP*CP*X-RAY DIFFRACTION
4KR6_CRNA (39-MER)X-RAY DIFFRACTION
4KR7_XRNA (39-MER)X-RAY DIFFRACTION
4KR9_XRNA (39-MER)X-RAY DIFFRACTION
4M4O_BRNA (59-MER)X-RAY DIFFRACTION
4M6D_LAPTAMERX-RAY DIFFRACTION
4P20_AB5'-R(*UP*UP*GP*CP*GP*UP*CP*AP*CP*AP*CP*CP*GP*GP*UPX-RAY DIFFRACTION
4P97_ABRNA (5'-R(*CP*GP*UP*CP*UP*AP*CP*CP*CP*AP*CP*CP*UP*X-RAY DIFFRACTION
4PLX_ACore ENE hairpin and A-rich tract from MALAT1X-RAY DIFFRACTION
4QIK_CD5'-R(*AP*C*AP*UP*GP*UP*UP*UP*UP*CP*UP*GP*UP*GP*AP*X-RAY DIFFRACTION
4QLM_ARNA (108-MER)X-RAY DIFFRACTION
4V4W_B95S ribosomal RNAELECTRON MICROSCOPY
4V5G_AYA-SITE TRNA THRX-RAY DIFFRACTION
4V7H_B35S ribosomal RNAELECTRON MICROSCOPY
4V8M_ABE-SITE TRNAELECTRON MICROSCOPY
4V8M_BHSHORT RRNA-IV OF THE LARGE RIBOSOMAL SUBUNITELECTRON MICROSCOPY
4V8N_AWA-SITE TRNA ILE2 AGMATIDINEX-RAY DIFFRACTION
4V8Q_BYTMRNA DELAX-RAY DIFFRACTION
4V9I_AWE-SITE tRNAX-RAY DIFFRACTION
4WCE_Y5S RRNAX-RAY DIFFRACTION
4WF9_Y5S RIBOSOMAL RNAX-RAY DIFFRACTION
4WRT_VRInfluenza virus polymerase vRNA promoterX-RAY DIFFRACTION
4WSA_VRInfluenza virus polymerase vRNA promoterX-RAY DIFFRACTION
4WSB_VRInfluenza virus polymerase vRNA promoterX-RAY DIFFRACTION
4WSM_3KtRNA-LeuX-RAY DIFFRACTION
4X0A_BRNA (73-MER)X-RAY DIFFRACTION
4X4O_DG70A tRNA minihelixX-RAY DIFFRACTION
4X4P_BG70A TRNA MINIHELIX ENDING IN CCACX-RAY DIFFRACTION
4X4Q_BG70A TRNA MINIHELIX ENDING IN CCACX-RAY DIFFRACTION
4X4T_BG70A TRNA MINIHELIX ENDING IN CCACCAX-RAY DIFFRACTION
4X4U_BHUMAN MENBETA MINIHELIXX-RAY DIFFRACTION
4X4V_BHuman MenBeta minihelix ending in CCACCX-RAY DIFFRACTION
4XW0_ABRNA (5'-R(*GP*CP*CP*UP*(LCG)P*CP*CP*UP*GP*C)-3')X-RAY DIFFRACTION
4Z31_CDRNA (5'-R(*A)-D(P*UP*GP*UP*UP*CP*UP*GP*UP*GP*AP*APX-RAY DIFFRACTION
4ZC7_ABRNA duplexX-RAY DIFFRACTION
5AA0_BCtRNA chain 1ELECTRON MICROSCOPY
5BTP_BRNA (62-MER)X-RAY DIFFRACTION
5CNR_ABRNA (5'-R(*GP*UP*CP*UP*AP*CP*CP*CP*AP*CP*CP*UP*CP*X-RAY DIFFRACTION
5DO4_ARNA (25-MER)X-RAY DIFFRACTION
5E7K_1LtRNALysX-RAY DIFFRACTION
5E81_1KtRNA-LysX-RAY DIFFRACTION
5EL4_3KtRNA-LysX-RAY DIFFRACTION
5FJ0_ABHMKT-7X-RAY DIFFRACTION
5FJ1_BHMKT-7X-RAY DIFFRACTION
5FJ4_HHMKT-7X-RAY DIFFRACTION
5G4U_IJHMKT-7X-RAY DIFFRACTION
5G4V_ABHMKT-7X-RAY DIFFRACTION
5GAO_VSACCHAROMYCES CEREVISIAE STRAIN UOA_M2 CHROMOSOME ELECTRON MICROSCOPY
5GAP_VU4 snRNA, 5' region, nucleotides 1-67ELECTRON MICROSCOPY
5HKV_Y5S RIBOSOMAL RNAX-RAY DIFFRACTION
5HL7_Y5S RIBOSOMAL RNAX-RAY DIFFRACTION
5IB8_1KtRNALysX-RAY DIFFRACTION
5IB8_3LtRNALysX-RAY DIFFRACTION
5J0M_BApical region (29-mer) of the HIV-1 TAR RNA elemenSOLUTION NMR
5J1O_BApical region (29mer) of the HIV-1 TAR elementSOLUTION NMR
5J2W_BApical region (29mer) of the HIV-1 TAR RNA elementSOLUTION NMR
5KH8_Ariboswitch (47-MER)SOLUTION NMR
5KQE_ATelomerase RNA P2abSOLUTION NMR
5L3P_ydeacylated A/R-tRNAELECTRON MICROSCOPY
5LWJ_AGTP Class II RNA (34-MER)SOLUTION NMR
5M0I_FASH1-E3 element, RNA (28-MER)X-RAY DIFFRACTION
5M0J_EASH1 E3 (28 nt-loop)X-RAY DIFFRACTION
5M3H_VRRNA 5'-pAGUAGUAACAAGAGGGX-RAY DIFFRACTION
5M3J_VRRNA 5'-pAGUAGUAACAAGAGGGX-RAY DIFFRACTION
5MPS_6SACCHAROMYCES CEREVISIAE STRAIN T.52_2H CHROMOSOMEELECTRON MICROSCOPY
5MSF_R5'-R(*CP*CP*GP*GP*AP*GP*GP*AP*UP*CP*AP*CP*CP*AP*CPX-RAY DIFFRACTION
5MSG_VRRNA (5'-R(*UP*AP*UP*AP*CP*CP*UP*CP*UP*GP*CP*UP*UP*X-RAY DIFFRACTION
5NRG_Y5S RIBOSOMAL RNAX-RAY DIFFRACTION
5NS3_CDOUBLE-STRANDED RNAX-RAY DIFFRACTION
5OSG_218S RRNAELECTRON MICROSCOPY
5T2A_FsrRNA3ELECTRON MICROSCOPY
5T3K_ABRNA (5'-R(*GP*GP*UP*GP*GP*UP*GP*AP*AP*GP*UP*CP*GP*X-RAY DIFFRACTION
5TCU_C5S rRNA CHAINELECTRON MICROSCOPY
5TZS_2U3 snoRNAELECTRON MICROSCOPY
5UF3_Aphage GA operator RNA hairpinSOLUTION NMR
5V16_ARNA (41-MER)SOLUTION NMR
5V17_ARNA (41-MER)SOLUTION NMR
5V1L_CDRNA (5'-R(*CP*GP*CP*GP*AP*AP*UP*(ZTH)P*AP*GP*CP*G)X-RAY DIFFRACTION
5V2R_ABRNA (5'-R(*CP*CP*AP*GP*AP*AP*AP*CP*GP*GP*AP*UP*GP*SOLUTION NMR
5VCF_ABRNA (5'-R(*CP*UP*GP*CP*UP*GP*GP*CP*UP*AP*AP*GP*GP*X-RAY DIFFRACTION
5VCI_ABRNA (5'-R(*CP*UP*GP*CP*UP*GP*GP*CP*UP*AP*AP*GP*GP*X-RAY DIFFRACTION
5VOE_AAPTAMER 11F7T (36-MER)X-RAY DIFFRACTION
5VOF_ADNA/RNA (36-MER)X-RAY DIFFRACTION
5VSU_I SACCHAROMYCES CEREVISIAE STRAIN T8 CHROMOSOME XII X-RAY DIFFRACTION
5WQE_BRNA (60-MER)X-RAY DIFFRACTION
5XBL_BRNA (98-MER)X-RAY DIFFRACTION
5XJC_BU5 snRNAELECTRON MICROSCOPY
5Y58_XTLC1X-RAY DIFFRACTION
5Y85_DDNA/RNA (50-MER)X-RAY DIFFRACTION
5Y87_DDNA/RNA (50-MER)X-RAY DIFFRACTION
5YDT_SASaccharomyces cerevisiae strain ALI 308 18S ribosoELECTRON MICROSCOPY
5YZG_BU5 snRNAELECTRON MICROSCOPY
5Z3G_CITS2 RNAELECTRON MICROSCOPY
5ZAL_CRNA (73-MER)ELECTRON MICROSCOPY
5ZEI_ABRNA (5'-R(P*UP*GP*CP*GP*UP*CP*(1MA)P*CP*GP*UP*CP*GX-RAY DIFFRACTION
5ZEM_ABRNA (5'-R(P*UP*GP*CP*GP*UP*CP*(1MA)P*CP*GP*UP*CP*GX-RAY DIFFRACTION
6ASO_ISACCHAROMYCES CEREVISIAE STRAIN HB_S_GIMBLETTROAD_X-RAY DIFFRACTION
6AZ3_6rRNA zetaELECTRON MICROSCOPY
6AZ4_ARNA (32-MER)X-RAY DIFFRACTION
6BOK_D16S ribosomal RNAX-RAY DIFFRACTION
6CMN_DTRANS-ACTIVATION RESPONSE RNA ELEMENTX-RAY DIFFRACTION
6D12_Chuman 7SK RNA stem-loop 4X-RAY DIFFRACTION
6D3P_ARNA (45-MER)X-RAY DIFFRACTION
6EK0_S6Human initiator Met-tRNA-iELECTRON MICROSCOPY
6EVJ_VRRNA (5'-R(P*AP*GP*UP*AP*GP*UP*AP*AP*CP*AP*AP*GP*APX-RAY DIFFRACTION
6EVK_VRRNA (5'-R(*UP*AP*UP*AP*CP*CP*UP*CP*UP*GP*CP*UP*U)-X-RAY DIFFRACTION
6EZ0_ARNA (27-MER)SOLUTION NMR
6F5O_VRRNA (5'-R(*UP*AP*UP*AP*CP*CP*UP*CP*UP*GP*CP*UP*U)-X-RAY DIFFRACTION
6FF4_5U5 SNRNAELECTRON MICROSCOPY
6FZ0_AMETY SAM V (53-MER)X-RAY DIFFRACTION
6GSJ_1KtRNAThrX-RAY DIFFRACTION
6GSK_1KtRNAThrX-RAY DIFFRACTION
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