6SGA image
Deposition Date 2019-08-03
Release Date 2019-09-18
Last Version Date 2024-11-13
Entry Detail
PDB ID:
6SGA
Keywords:
RIBOSOME
Title:
Body domain of the mt-SSU assemblosome from Trypanosoma brucei
Biological Source:
Source Organism:
Trypanosoma brucei brucei (Taxon ID: 5702)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
3.10 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
6SGA validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:9S rRNA
Chain IDs:RB (auth: CA)
Chain Length:602
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:uS5m
Chain IDs:A (auth: CE)
Chain Length:435
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:bS6m
Gene (Uniprot):Tb10.70.4850
Chain IDs:B (auth: CF)
Chain Length:160
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q38BW5
Polymer Type:polypeptide(L)
Molecule:uS8m
Chain IDs:C (auth: CH)
Chain Length:282
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uS11m
Gene (Uniprot):Tb10.406.0510
Chain IDs:D (auth: CK)
Chain Length:326
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q389T7
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uS15m
Gene (Uniprot):TB927.1.1200
Chain IDs:E (auth: CO)
Chain Length:429
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q4GZ99
Protein Blast
Polymer Type:polypeptide(L)
Molecule:bS16m
Gene (Uniprot):Tb11.02.5670
Chain IDs:F (auth: CP)
Chain Length:188
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q384N9
Polymer Type:polypeptide(L)
Molecule:uS17m
Chain IDs:G (auth: CQ)
Chain Length:336
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:bS18m
Chain IDs:H (auth: CR)
Chain Length:320
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mS22
Gene (Uniprot):Tb09.211.2430
Chain IDs:I (auth: Ca)
Chain Length:602
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q38DR3
Polymer Type:polypeptide(L)
Molecule:mS23
Chain IDs:J (auth: Cb)
Chain Length:311
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mS26
Gene (Uniprot):Tb09.211.3000
Chain IDs:K (auth: Cd)
Chain Length:440
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q38DK6
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mS34
Gene (Uniprot):Tb08.5H5.370
Chain IDs:L (auth: Cj)
Chain Length:257
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q57UK0
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mS38
Gene (Uniprot):Tb07.29K4.740
Chain IDs:M (auth: Cn)
Chain Length:250
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q57VQ9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mS41
Gene (Uniprot):Tb10.26.0750
Chain IDs:N (auth: Cp)
Chain Length:188
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q389L3
Polymer Type:polypeptide(L)
Molecule:mS51 (KRIPP1)
Chain IDs:O (auth: DD)
Chain Length:812
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:mS56
Chain IDs:P (auth: DI)
Chain Length:407
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:mS59
Chain IDs:Q (auth: DL)
Chain Length:307
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mS62 (KRIPP14)
Gene (Uniprot):Tb11.01.3300
Chain IDs:R (auth: DO)
Chain Length:282
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q383D1
Polymer Type:polypeptide(L)
Molecule:mS63 (KRIPP16)
Chain IDs:S (auth: DP)
Chain Length:274
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:mS65
Chain IDs:T (auth: DR)
Chain Length:270
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:mS68
Chain IDs:U (auth: DU)
Chain Length:228
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mS73
Gene (Uniprot):Tb06.26G9.560
Chain IDs:V (auth: DZ)
Chain Length:94
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q587C4
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF1 (RSM22)
Gene (Uniprot):Tb11.02.2710
Chain IDs:SB (auth: F1)
Chain Length:1041
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q385R2 Pfam ID:PF09243
Polymer Type:polypeptide(L)
Molecule:mt-SAF2 (KRIPP2)
Chain IDs:W (auth: F2)
Chain Length:1024
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF3
Gene (Uniprot):Tb09.211.0950
Chain IDs:X (auth: F3)
Chain Length:966
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q38E61
Polymer Type:polypeptide(L)
Molecule:mt-SAF5
Chain IDs:Y (auth: F5)
Chain Length:754
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF6
Gene (Uniprot):Tb09.160.1280
Chain IDs:Z (auth: F6)
Chain Length:676
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q38FQ8 Pfam ID:PF14687
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF7 (KRIPP10)
Gene (Uniprot):Tb08.4A8.560
Chain IDs:AA (auth: F7)
Chain Length:679
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q57UW6
Polymer Type:polypeptide(L)
Molecule:mt-SAF8
Chain IDs:BA (auth: F8)
Chain Length:726
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:mt-SAF9
Chain IDs:CA (auth: F9)
Chain Length:608
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF10
Gene (Uniprot):Tb11.18.0009
Chain IDs:DA (auth: FA)
Chain Length:642
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q386U1
Polymer Type:polypeptide(L)
Molecule:mt-SAF11
Chain IDs:EA (auth: FB), FA (auth: FC)
Chain Length:151
Number of Molecules:2
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:mt-SAF13
Chain IDs:GA (auth: FE)
Chain Length:553
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF14
Gene (Uniprot):Tb08.28F14.650
Chain IDs:TB (auth: FF)
Chain Length:474
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q57W60 Pfam ID:PF01795
Polymer Type:polypeptide(L)
Molecule:mt-SAF18
Chain IDs:HA (auth: FJ)
Chain Length:362
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:mt-SAF21
Chain IDs:IA (auth: FM), JA (auth: FN)
Chain Length:370
Number of Molecules:2
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF22 (KRIPP17)
Gene (Uniprot):Tb10.26.0050
Chain IDs:KA (auth: FO)
Chain Length:334
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q389F9
Polymer Type:polypeptide(L)
Molecule:mt-SAF23
Chain IDs:LA (auth: FP)
Chain Length:349
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF24
Gene (Uniprot):Tb10.61.0090
Chain IDs:MA (auth: FQ), NA (auth: FR), OA (auth: FS), PA (auth: FT), QA (auth: FU)
Chain Length:307
Number of Molecules:5
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q387P8 Pfam ID:PF02214
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF26
Gene (Uniprot):Tb09.160.2100
Chain IDs:RA (auth: FW)
Chain Length:263
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q38FI3 Pfam ID:PF01451
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF27
Gene (Uniprot):Tb08.11J15.790
Chain IDs:SA (auth: FX)
Chain Length:239
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q57YK5 Pfam ID:PF13812
Polymer Type:polypeptide(L)
Molecule:mt-SAF28
Chain IDs:TA (auth: FY)
Chain Length:188
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:mt-SAF29
Chain IDs:UA (auth: FZ)
Chain Length:178
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF30
Gene (Uniprot):Tb07.29K4.100
Chain IDs:VA (auth: Fa)
Chain Length:642
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q57VU7
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF31
Gene (Uniprot):Tb04.2L9.550
Chain IDs:WA (auth: Fb)
Chain Length:151
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q581U4
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF32
Gene (Uniprot):Tb03.27F10.580
Chain IDs:XA (auth: Fc)
Chain Length:148
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q57WW9 Pfam ID:PF00550
Protein Blast
Polymer Type:polypeptide(L)
Molecule:mt-SAF33
Gene (Uniprot):Tb04.2L9.680
Chain IDs:YA (auth: Fd)
Chain Length:143
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
UniProt ID:Q581T4 Pfam ID:PF14311
Polymer Type:polypeptide(L)
Molecule:UNK-A
Chain IDs:ZA (auth: UA)
Chain Length:21
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-B
Chain IDs:AB (auth: UB)
Chain Length:27
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-C
Chain IDs:BB (auth: UC)
Chain Length:10
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-D, UNK-M, UNK-Q
Chain IDs:CB (auth: UD), KB (auth: UM), OB (auth: UQ)
Chain Length:9
Number of Molecules:3
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-E, UNK-P
Chain IDs:DB (auth: UE), NB (auth: UP)
Chain Length:45
Number of Molecules:2
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-F
Chain IDs:EB (auth: UF)
Chain Length:11
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-G
Chain IDs:FB (auth: UG)
Chain Length:17
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-H
Chain IDs:GB (auth: UH)
Chain Length:5
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-I, UNK-M
Chain IDs:HB (auth: UI), LB (auth: UN)
Chain Length:8
Number of Molecules:2
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-J
Chain IDs:IB (auth: UJ)
Chain Length:16
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-L
Chain IDs:JB (auth: UL)
Chain Length:22
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-O
Chain IDs:MB (auth: UO)
Chain Length:30
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-U
Chain IDs:PB (auth: UU)
Chain Length:24
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Polymer Type:polypeptide(L)
Molecule:UNK-I
Chain IDs:QB (auth: UY)
Chain Length:468
Number of Molecules:1
Biological Source:Trypanosoma brucei brucei
Ligand Molecules
MG
PM8
PO4
ZN
Primary Citation
Mitoribosomal small subunit biogenesis in trypanosomes involves an extensive assembly machinery.
Science 365 1144 1149 (2019)
PMID: 31515389 DOI: 10.1126/science.aaw5570

Abstact

Mitochondrial ribosomes (mitoribosomes) are large ribonucleoprotein complexes that synthesize proteins encoded by the mitochondrial genome. An extensive cellular machinery responsible for ribosome assembly has been described only for eukaryotic cytosolic ribosomes. Here we report that the assembly of the small mitoribosomal subunit in Trypanosoma brucei involves a large number of factors and proceeds through the formation of assembly intermediates, which we analyzed by using cryo-electron microscopy. One of them is a 4-megadalton complex, referred to as the small subunit assemblosome, in which we identified 34 factors that interact with immature ribosomal RNA (rRNA) and recognize its functionally important regions. The assembly proceeds through large-scale conformational changes in rRNA coupled with successive incorporation of mitoribosomal proteins, providing an example for the complexity of the ribosomal assembly process in mitochondria.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
6SGA