8PV6 image
Deposition Date 2023-07-17
Release Date 2023-11-15
Last Version Date 2023-12-20
Entry Detail
PDB ID:
8PV6
Keywords:
RIBOSOME
Title:
Chaetomium thermophilum pre-60S State 3 - post-5S rotation with Rix1 complex with Foot - composite structure
Biological Source:
Source Organism(s):
Thermochaetoides thermophila DSM 1495 (Taxon ID: 759272)
Expression System(s):
Thermochaetoides thermophila dsm 1495
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
2.94 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
8PV6 validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:26S rRNA
Chain IDs:A (auth: C1)
Chain Length:3342
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
Polymer Type:polyribonucleotide
Molecule:5.8S rRNA
Chain IDs:B (auth: C2)
Chain Length:156
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
Polymer Type:polyribonucleotide
Molecule:ITS2
Chain IDs:C (auth: C3)
Chain Length:162
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
Polymer Type:polyribonucleotide
Molecule:5S rRNA
Chain IDs:D (auth: C4)
Chain Length:119
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Large ribosomal subunit protein uL10
Gene (Uniprot):CTHT_0025680
Chain IDs:E (auth: CF)
Chain Length:270
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S616 Pfam ID:PF00466, PF17777
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Nucleolar GTP-binding protein 1
Gene (Uniprot):NOG1
Chain IDs:F (auth: CH)
Chain Length:517
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S8F1 Pfam ID:PF17835, PF06858, PF08155
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Putative RNA-binding protein
Gene (Uniprot):CTHT_0013570
Chain IDs:G (auth: CI)
Chain Length:414
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S1H0 Pfam ID:PF00076
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Pescadillo homolog
Gene (Uniprot):NOP7
Chain IDs:H (auth: CJ)
Chain Length:679
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SHX6 Pfam ID:PF06732, PF00533
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosome biogenesis protein NSA2 homolog
Gene (Uniprot):CTHT_0009080
Chain IDs:I (auth: CK)
Chain Length:261
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S081 Pfam ID:PF01201
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Putative GTP binding protein
Gene (Uniprot):CTHT_0059920
Chain IDs:J (auth: CL)
Chain Length:558
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SEW3 Pfam ID:PF08701, PF01926
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein l7-like protein
Gene (Uniprot):CTHT_0071220
Chain IDs:K (auth: CM), EA (auth: LF)
Chain Length:249
Number of Molecules:2
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SFL0 Pfam ID:PF08079, PF00327
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Eukaryotic translation initiation factor 6
Gene (Uniprot):TIF6
Chain IDs:L (auth: CN)
Chain Length:246
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S683 Pfam ID:PF01912
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DUF2423 domain-containing protein
Gene (Uniprot):CTHT_0070290
Chain IDs:M (auth: CO)
Chain Length:120
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SHK0 Pfam ID:PF10338
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosome biogenesis protein RLP24
Gene (Uniprot):CTHT_0039400
Chain IDs:N (auth: CQ)
Chain Length:225
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S497 Pfam ID:PF01246
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Protein SDA1
Gene (Uniprot):SDA1
Chain IDs:O (auth: CR)
Chain Length:767
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S215 Pfam ID:PF08158, PF05285, PF21638
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Pre-rRNA-processing protein IPI1
Gene (Uniprot):IPI1
Chain IDs:P (auth: CS)
Chain Length:338
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:P0CT45 Pfam ID:PF12333
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Pre-rRNA-processing protein IPI3
Gene (Uniprot):CTHT_0014750
Chain IDs:Q (auth: CT), R (auth: CU)
Chain Length:437
Number of Molecules:2
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S1T5 Pfam ID:PF00400
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Pre-rRNA-processing protein RIX1
Gene (Uniprot):CTHT_0025150
Chain IDs:S (auth: CV), T (auth: CW)
Chain Length:781
Number of Molecules:2
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S5R0 Pfam ID:PF08167
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Zinc finger domain-containing protein
Gene (Uniprot):CTHT_0048710
Chain IDs:U (auth: Cb)
Chain Length:117
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SB32 Pfam ID:PF12171
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Nucleolar GTP-binding protein 2
Gene (Uniprot):CTHT_0055100
Chain IDs:V (auth: Cd)
Chain Length:627
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SBX1 Pfam ID:PF08153, PF01926
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosome biogenesis protein NOP53
Gene (Uniprot):CTHT_0039380
Chain IDs:W (auth: Ce)
Chain Length:443
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S495 Pfam ID:PF07767
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosome assembly protein 4
Gene (Uniprot):CTHT_0055700
Mutagens:E117D
Chain IDs:X (auth: Ch)
Chain Length:517
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SC29 Pfam ID:PF00400
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:rRNA-processing protein
Gene (Uniprot):CTHT_0057940
Chain IDs:Y (auth: Cz)
Chain Length:123
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SCP3 Pfam ID:PF03879
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L2-like protein
Gene (Uniprot):CTHT_0023090
Chain IDs:Z (auth: LA)
Chain Length:149
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S4P8 Pfam ID:PF00181, PF03947
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L3-like protein
Gene (Uniprot):CTHT_0004490
Chain IDs:AA (auth: LB)
Chain Length:65
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0RXW1 Pfam ID:PF00297
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L4-like protein
Gene (Uniprot):CTHT_0061540
Chain IDs:BA (auth: LC)
Chain Length:365
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SFC3 Pfam ID:PF00573, PF14374
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein l5-like protein
Gene (Uniprot):HT_0063640
Chain IDs:CA (auth: LD)
Chain Length:304
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SEG2 Pfam ID:PF17144, PF14204
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6
Gene (Uniprot):CTHT_0009640
Chain IDs:DA (auth: LE)
Chain Length:131
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S0D6 Pfam ID:PF01159
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L8
Gene (Uniprot):CTHT_0042550
Chain IDs:FA (auth: LG)
Chain Length:119
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SAJ9 Pfam ID:PF01248
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein l9-like protein
Chain IDs:GA (auth: LH)
Chain Length:935
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Putative ribosomal protein
Gene (Uniprot):HT_0072970
Chain IDs:HA (auth: LJ)
Chain Length:173
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SHQ2 Pfam ID:PF00281, PF00673
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L12-like protein
Gene (Uniprot):CTHT_0066380
Chain IDs:IA (auth: LK)
Chain Length:94
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SGH8 Pfam ID:PF03946, PF00298
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13
Gene (Uniprot):CTHT_0045000
Chain IDs:JA (auth: LL)
Chain Length:51
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S992 Pfam ID:PF01294
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L14-like protein
Gene (Uniprot):CTHT_0014490
Chain IDs:KA (auth: LM)
Chain Length:142
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S1R0 Pfam ID:PF01929
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L15
Gene (Uniprot):CTHT_0002100
Chain IDs:LA (auth: LN)
Chain Length:203
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0RZ88 Pfam ID:PF00827
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L16-like protein
Gene (Uniprot):CTHT_0068840
Chain IDs:MA (auth: LO)
Chain Length:204
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SH61 Pfam ID:PF00572
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein l17-like protein
Gene (Uniprot):CTHT_0067970
Chain IDs:NA (auth: LP)
Chain Length:92
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SGY1 Pfam ID:PF00237
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L18-like protein
Gene (Uniprot):CTHT_0045230
Chain IDs:OA (auth: LQ)
Chain Length:213
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S9B5 Pfam ID:PF17135
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L19
Gene (Uniprot):CTHT_0047080
Chain IDs:PA (auth: LR)
Chain Length:217
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S9T3 Pfam ID:PF12074, PF13513, PF21040, PF10274, PF01280, PF24993, PF24916, PF24987, PF24984, PF23271, PF25801, PF25476
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L20
Gene (Uniprot):CTHT_0056900
Chain IDs:QA (auth: LS)
Chain Length:174
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SCE2 Pfam ID:PF01775
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein l21-like protein
Gene (Uniprot):CTHT_0011760
Chain IDs:RA (auth: LT)
Chain Length:160
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S0Z3 Pfam ID:PF01157
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L22-like protein
Gene (Uniprot):CTHT_0052850
Chain IDs:SA (auth: LU)
Chain Length:127
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SDS8 Pfam ID:PF01776
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein l23-like protein
Gene (Uniprot):CTHT_0074440
Chain IDs:TA (auth: LV)
Chain Length:139
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SI44 Pfam ID:PF00238
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L25-like protein
Gene (Uniprot):CTHT_0023650
Chain IDs:UA (auth: LX)
Chain Length:156
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S507 Pfam ID:PF03939, PF00276
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L26-like protein
Gene (Uniprot):CTHT_0007360
Chain IDs:VA (auth: LY)
Chain Length:138
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0RYN9 Pfam ID:PF16906, PF00467
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27
Gene (Uniprot):CTHT_0002720
Chain IDs:WA (auth: LZ)
Chain Length:135
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0RZE9 Pfam ID:PF01777
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L28-like protein
Chain IDs:XA (auth: La)
Chain Length:149
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Gene (Uniprot):CHGG_02990
Chain IDs:YA (auth: Lb)
Chain Length:65
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:Q2H9W4 Pfam ID:PF01779
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein l30-like protein
Gene (Uniprot):CTHT_0063820
Chain IDs:ZA (auth: Lc)
Chain Length:365
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SEI0 Pfam ID:PF01248
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Putative 60S ribosomal protein
Gene (Uniprot):CTHT_0059140
Chain IDs:AB (auth: Ld)
Chain Length:304
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SD68 Pfam ID:PF01198
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L32-like protein
Gene (Uniprot):CTHT_0027000
Chain IDs:BB (auth: Le)
Chain Length:131
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S6V4 Pfam ID:PF01655
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein l33-like protein
Gene (Uniprot):CTHT_0057640
Chain IDs:CB (auth: Lf)
Chain Length:249
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SCL3 Pfam ID:PF01247
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein l34-like protein
Gene (Uniprot):CTHT_0071430
Chain IDs:DB (auth: Lg)
Chain Length:119
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SFN0 Pfam ID:PF01199
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:dolichyl-diphosphooligosaccharide--protein glycotransferase
Gene (Uniprot):CTHT_0009650
Chain IDs:EB (auth: Lh)
Chain Length:935
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S0D7 Pfam ID:PF00831, PF02516, PF21436
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36
Gene (Uniprot):CTHT_0054170
Chain IDs:FB (auth: Li)
Chain Length:110
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SBN1 Pfam ID:PF01158
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37
Gene (Uniprot):CTHT_0011850
Chain IDs:GB (auth: Lj)
Chain Length:173
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S101 Pfam ID:PF01907
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L38-like protein
Gene (Uniprot):CTHT_0065470
Chain IDs:HB (auth: Lk)
Chain Length:94
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SG89 Pfam ID:PF01781
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein eL39
Gene (Uniprot):CHGG_03042
Chain IDs:IB (auth: Ll)
Chain Length:51
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:Q2H9R2 Pfam ID:PF00832
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L43-like protein
Gene (Uniprot):CTHT_0026110
Chain IDs:JB (auth: Lp)
Chain Length:92
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S6B0 Pfam ID:PF01780
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Putative 60S ribosomal protein
Gene (Uniprot):CTHT_0070250
Chain IDs:KB (auth: Lq)
Chain Length:213
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0SHJ6 Pfam ID:PF01778
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein
Gene (Uniprot):CTHT_0023560
Chain IDs:LB (auth: Lr)
Chain Length:217
Number of Molecules:1
Biological Source:Thermochaetoides thermophila DSM 1495
UniProt ID:G0S4Z9 Pfam ID:PF00687
Ligand Molecules
GTP
MG
ZN
Primary Citation
Structural insights into coordinating 5S RNP rotation with ITS2 pre-RNA processing during ribosome formation.
Embo Rep. 24 e57984 e57984 (2023)
PMID: 37921038 DOI: 10.15252/embr.202357984

Abstact

The rixosome defined in Schizosaccharomyces pombe and humans performs diverse roles in pre-ribosomal RNA processing and gene silencing. Here, we isolate and describe the conserved rixosome from Chaetomium thermophilum, which consists of two sub-modules, the sphere-like Rix1-Ipi3-Ipi1 and the butterfly-like Las1-Grc3 complex, connected by a flexible linker. The Rix1 complex of the rixosome utilizes Sda1 as landing platform on nucleoplasmic pre-60S particles to wedge between the 5S rRNA tip and L1-stalk, thereby facilitating the 180° rotation of the immature 5S RNP towards its mature conformation. Upon rixosome positioning, the other sub-module with Las1 endonuclease and Grc3 polynucleotide-kinase can reach a strategic position at the pre-60S foot to cleave and 5' phosphorylate the nearby ITS2 pre-rRNA. Finally, inward movement of the L1 stalk permits the flexible Nop53 N-terminus with its AIM motif to become positioned at the base of the L1-stalk to facilitate Mtr4 helicase-exosome participation for completing ITS2 removal. Thus, the rixosome structure elucidates the coordination of two central ribosome biogenesis events, but its role in gene silencing may adapt similar strategies.

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Protein

Chemical

Disease

Primary Citation of related structures
8PV6
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