7MQA

Cryo-EM structure of the human SSU processome, state post-A1

  • Classification: RIBOSOME
  • Organism(s): Homo sapiens
  • Mutation(s): No 

  • Deposited: 2021-05-05 Released: 2021-09-22 
  • Deposition Author(s): Vanden Broeck, A., Singh, S., Klinge, S.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), European Molecular Biology Organization (EMBO)

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Nucleolar maturation of the human small subunit processome.

Singh, S.Vanden Broeck, A.Miller, L.Chaker-Margot, M.Klinge, S.

(2021) Science 373: eabj5338-eabj5338

  • DOI: https://doi.org/10.1126/science.abj5338
  • Primary Citation of Related Structures:  
    7MQ8, 7MQ9, 7MQA, 7MQJ

  • PubMed Abstract: 
  • The human small subunit processome mediates early maturation of the small ribosomal subunit by coupling RNA folding to subsequent RNA cleavage and processing steps. We report the high-resolution cryo–electron microscopy structures of maturing human small subunit (SSU) processomes at resolutions of 2 ...

    The human small subunit processome mediates early maturation of the small ribosomal subunit by coupling RNA folding to subsequent RNA cleavage and processing steps. We report the high-resolution cryo–electron microscopy structures of maturing human small subunit (SSU) processomes at resolutions of 2.7 to 3.9 angstroms. These structures reveal the molecular mechanisms that enable crucial progressions during SSU processome maturation. RNA folding states within these particles are communicated to and coordinated with key enzymes that drive irreversible steps such as targeted exosome-mediated RNA degradation, protein-guided site-specific endonucleolytic RNA cleavage, and tightly controlled RNA unwinding. These conserved mechanisms highlight the SSU processome’s impressive structural plasticity, which endows this 4.5-megadalton nucleolar assembly with the distinctive ability to mature the small ribosomal subunit from within.


    Organizational Affiliation

    Laboratory of Protein and Nucleic Acid Chemistry, The Rockefeller University, New York, NY 10065, USA.



Macromolecules

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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S18D [auth L3]116Homo sapiensMutation(s): 0 
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S4, X isoformE [auth L4]263Homo sapiensMutation(s): 0 
Gene Names: RPS4XCCG2RPS4SCAR
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S5F [auth L5]204Homo sapiensMutation(s): 0 
Gene Names: RPS5
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S6G [auth L6]249Homo sapiensMutation(s): 0 
Gene Names: RPS6OK/SW-cl.2
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S7H [auth L7]194Homo sapiensMutation(s): 0 
Gene Names: RPS7
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S8I [auth L8]208Homo sapiensMutation(s): 0 
Gene Names: RPS8OK/SW-cl.83
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Entity ID: 10
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40S ribosomal protein S9J [auth L9]194Homo sapiensMutation(s): 0 
Gene Names: RPS9
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S12K [auth LA]132Homo sapiensMutation(s): 0 
Gene Names: RPS12
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S16L [auth LC]146Homo sapiensMutation(s): 0 
Gene Names: RPS16
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S11M [auth LD]158Homo sapiensMutation(s): 0 
Gene Names: RPS11
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S24N [auth LF]133Homo sapiensMutation(s): 0 
Gene Names: RPS24
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Entity ID: 15
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S28O [auth LG]69Homo sapiensMutation(s): 0 
Gene Names: RPS28
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Entity ID: 16
MoleculeChainsSequence LengthOrganismDetailsImage
WD repeat-containing protein 75P [auth LH]830Homo sapiensMutation(s): 0 
Gene Names: WDR75UTP17
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Entity ID: 17
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Nucleolar protein 11Q [auth LI]678Homo sapiensMutation(s): 0 
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Entity ID: 18
MoleculeChainsSequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 15 homologR [auth LJ]518Homo sapiensMutation(s): 0 
Gene Names: UTP15
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Entity ID: 19
MoleculeChainsSequence LengthOrganismDetailsImage
WD repeat-containing protein 43S [auth LK],
T [auth LL]
677Homo sapiensMutation(s): 0 
Gene Names: WDR43KIAA0007UTP5
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Entity ID: 20
MoleculeChainsSequence LengthOrganismDetailsImage
HEAT repeat-containing protein 1U [auth LM]2,144Homo sapiensMutation(s): 0 
Gene Names: HEATR1BAP28UTP10
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Entity ID: 21
MoleculeChainsSequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 4 homologV [auth LN]686Homo sapiensMutation(s): 0 
Gene Names: UTP4CIRH1AcPERP-EKIAA1988
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Entity ID: 22
MoleculeChainsSequence LengthOrganismDetailsImage
Periodic tryptophan protein 2 homologW [auth LO]919Homo sapiensMutation(s): 0 
Gene Names: PWP2PWP2H
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Entity ID: 23
MoleculeChainsSequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 6 homologX [auth LP]597Homo sapiensMutation(s): 0 
Gene Names: UTP6C17orf40HCA66MHAT
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Entity ID: 24
MoleculeChainsSequence LengthOrganismDetailsImage
WD repeat-containing protein 3Y [auth LQ]943Homo sapiensMutation(s): 0 
Gene Names: WDR3
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Entity ID: 25
MoleculeChainsSequence LengthOrganismDetailsImage
Transducin beta-like protein 3Z [auth LR]808Homo sapiensMutation(s): 0 
Gene Names: TBL3SAZD
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Entity ID: 26
MoleculeChainsSequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 18 homologAA [auth LS]556Homo sapiensMutation(s): 0 
Gene Names: UTP18WDR50CDABP0061CGI-48
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Entity ID: 27
MoleculeChainsSequence LengthOrganismDetailsImage
WD repeat-containing protein 36BA [auth LT]951Homo sapiensMutation(s): 0 
Gene Names: WDR36
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Entity ID: 28
MoleculeChainsSequence LengthOrganismDetailsImage
DDB1- and CUL4-associated factor 13CA [auth LU]445Homo sapiensMutation(s): 0 
Gene Names: DCAF13WDSOF1HSPC064
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Entity ID: 29
MoleculeChainsSequence LengthOrganismDetailsImage
WD repeat-containing protein 46DA [auth LW]610Homo sapiensMutation(s): 0 
Gene Names: WDR46BING4C6orf11FP221
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Entity ID: 30
MoleculeChainsSequence LengthOrganismDetailsImage
Active regulator of SIRT1EA [auth LY]136Homo sapiensMutation(s): 0 
Gene Names: RPS19BP1AROS
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Entity ID: 31
MoleculeChainsSequence LengthOrganismDetailsImage
U3 small nucleolar ribonucleoprotein protein IMP3FA [auth LZ]184Homo sapiensMutation(s): 0 
Gene Names: IMP3C15orf12MRPS4
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Entity ID: 32
MoleculeChainsSequence LengthOrganismDetailsImage
U3 small nucleolar ribonucleoprotein protein MPP10GA [auth NA]681Homo sapiensMutation(s): 0 
Gene Names: MPHOSPH10MPP10
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Entity ID: 33
MoleculeChainsSequence LengthOrganismDetailsImage
Something about silencing protein 10HA [auth NB]479Homo sapiensMutation(s): 0 
Gene Names: UTP3CRLZ1SAS10
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Entity ID: 34
MoleculeChainsSequence LengthOrganismDetailsImage
Nucleolar protein 7IA [auth ND]257Homo sapiensMutation(s): 0 
Gene Names: NOL7C6orf90NOP27
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Entity ID: 35
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40S ribosomal protein S13JA [auth NF]151Homo sapiensMutation(s): 0 
Gene Names: RPS13
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Entity ID: 36
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S14KA [auth NG]151Homo sapiensMutation(s): 0 
Gene Names: RPS14PRO2640
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Entity ID: 37
MoleculeChainsSequence LengthOrganismDetailsImage
Nucleolar protein 6LA [auth NH]1,146Homo sapiensMutation(s): 0 
Gene Names: NOL6
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Entity ID: 38
MoleculeChainsSequence LengthOrganismDetailsImage
Ribosomal RNA-processing protein 7 homolog AMA [auth NI]280Homo sapiensMutation(s): 0 
Gene Names: RRP7ACGI-96
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Entity ID: 39
MoleculeChainsSequence LengthOrganismDetailsImage
Probable dimethyladenosine transferaseNA [auth NL]313Homo sapiensMutation(s): 0 
Gene Names: DIMT1DIMT1LHUSSY-05
EC: 2.1.1.183
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Entity ID: 40
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S3aOA [auth NM]264Homo sapiensMutation(s): 0 
Gene Names: RPS3AFTE1MFTL
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Entity ID: 41
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S15aPA [auth NO]130Homo sapiensMutation(s): 0 
Gene Names: RPS15AOK/SW-cl.82
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Entity ID: 42
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40S ribosomal protein S19QA [auth NP]145Homo sapiensMutation(s): 0 
Gene Names: RPS19
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Entity ID: 43
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S27RA [auth NQ]84Homo sapiensMutation(s): 0 
Gene Names: RPS27MPS1
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UniProt GroupP42677
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Entity ID: 44
MoleculeChainsSequence LengthOrganismDetailsImage
RRP12-like proteinSA [auth NR]861Homo sapiensMutation(s): 0 
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Entity ID: 45
MoleculeChainsSequence LengthOrganismDetailsImage
Probable ATP-dependent RNA helicase DHX37TA [auth NS]1,157Homo sapiensMutation(s): 0 
Gene Names: DHX37DDX37KIAA1517
EC: 3.6.4.13
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Entity ID: 46
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin-40S ribosomal protein S27aUA [auth NT]156Homo sapiensMutation(s): 0 
Gene Names: RPS27AUBA80UBCEP1
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Entity ID: 47
MoleculeChainsSequence LengthOrganismDetailsImage
40S ribosomal protein S17VA [auth NU]135Homo sapiensMutation(s): 0 
Gene Names: RPS17RPS17L
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Entity ID: 48
MoleculeChainsSequence LengthOrganismDetailsImage
Exosome component 10WA [auth NV]885Homo sapiensMutation(s): 0 
Gene Names: EXOSC10PMSCLPMSCL2RRP6
EC: 3.1.13
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Entity ID: 49
MoleculeChainsSequence LengthOrganismDetailsImage
Nucleolar protein 56XA [auth SA]594Homo sapiensMutation(s): 0 
Gene Names: NOP56NOL5A
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Entity ID: 50
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Nucleolar protein 58YA [auth SB]529Homo sapiensMutation(s): 0 
Gene Names: NOP58NOL5NOP5HSPC120
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Entity ID: 51
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rRNA 2'-O-methyltransferase fibrillarinAB [auth SD],
ZA [auth SC]
321Homo sapiensMutation(s): 0 
Gene Names: FBLFIB1FLRN
EC: 2.1.1
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Entity ID: 52
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NHP2-like protein 1BB [auth SE],
CB [auth SF]
128Homo sapiensMutation(s): 0 
Gene Names: SNU13NHP2L1
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Entity ID: 53
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U3 small nucleolar RNA-interacting protein 2DB [auth SG]475Homo sapiensMutation(s): 0 
Gene Names: RRP9RNU3IP2U355K
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Entity ID: 54
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RNA 3'-terminal phosphate cyclase-like proteinEB [auth SH]373Homo sapiensMutation(s): 0 
Gene Names: RCL1RNACRPC2RPCL1RTC2HSPC338
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Entity ID: 55
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Ribosome biogenesis protein BMS1 homologFB [auth SI]1,282Homo sapiensMutation(s): 0 
Gene Names: BMS1BMS1LKIAA0187
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Entity ID: 56
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Ribosomal RNA small subunit methyltransferase NEP1GB [auth SJ],
HB [auth SK]
244Homo sapiensMutation(s): 0 
Gene Names: EMG1C2F
EC: 2.1.1
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Entity ID: 57
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rRNA-processing protein FCF1 homologIB [auth SL]198Homo sapiensMutation(s): 0 
Gene Names: FCF1C14orf111CGI-35
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Entity ID: 58
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U3 small nucleolar ribonucleoprotein protein IMP4JB [auth SM]291Homo sapiensMutation(s): 0 
Gene Names: IMP4BXDC4
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Entity ID: 59
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Small subunit processome component 20 homologKB [auth SP]2,785Homo sapiensMutation(s): 0 
Gene Names: UTP20DRIM
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Entity ID: 60
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Deoxynucleotidyltransferase terminal-interacting protein 2LB [auth SQ]756Homo sapiensMutation(s): 0 
Gene Names: DNTTIP2ERBPTDIF2
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Entity ID: 61
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40S ribosomal protein S23MB [auth SR]143Homo sapiensMutation(s): 0 
Gene Names: RPS23
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Entity ID: 62
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U3 small nucleolar RNA-associated protein 14 homolog ANB [auth SS]771Homo sapiensMutation(s): 0 
Gene Names: UTP14ASDCCAG16
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Entity ID: 63
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Nucleolar protein 14OB [auth ST]632Homo sapiensMutation(s): 0 
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Entity ID: 64
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Nucleolar complex protein 4 homologPB [auth SU]472Homo sapiensMutation(s): 0 
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Entity ID: 65
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RNA-binding protein PNO1QB [auth SW]252Homo sapiensMutation(s): 0 
Gene Names: PNO1
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Entity ID: 66
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Unassigned peptidesRB [auth SX]228Homo sapiensMutation(s): 0 
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Entity ID: 67
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Probable U3 small nucleolar RNA-associated protein 11SB [auth SY]253Homo sapiensMutation(s): 0 
Gene Names: UTP11UTP11LCGI-94HDCMB12P
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Entity ID: 68
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BystinTB [auth SZ]304Homo sapiensMutation(s): 0 
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