6SGC image
Deposition Date 2019-08-03
Release Date 2019-12-04
Last Version Date 2022-03-30
Entry Detail
PDB ID:
6SGC
Keywords:
RIBOSOME
Title:
Rabbit 80S ribosome stalled on a poly(A) tail
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Oryctolagus cuniculus (Taxon ID: 9986)
Host Organism:
Salmonella virus SP6
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
2.80 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
6SGC validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:tRNA (Lys3)
Chain IDs:GC (auth: 23), HC (auth: 33)
Chain Length:76
Number of Molecules:2
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:28S ribosomal RNA
Chain IDs:BC (auth: 54)
Chain Length:3603
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:5S ribosomal RNA
Chain IDs:CC (auth: 74)
Chain Length:120
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:5.8S ribosomal RNA
Chain IDs:DC (auth: 84)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:18S ribosomal RNA
Chain IDs:A (auth: A1)
Chain Length:125
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L8
Gene (Uniprot):RPL8
Chain IDs:JA (auth: A2)
Chain Length:257
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TT27 Pfam ID:PF00181, PF03947
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein
Gene (Uniprot):RPL10A
Chain IDs:FC (auth: B)
Chain Length:217
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SKZ8 Pfam ID:PF00687
Polymer Type:polypeptide(L)
Molecule:uS2
Chain IDs:B (auth: B1)
Chain Length:295
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL3
Gene (Uniprot):RPL3
Chain IDs:KA (auth: B2)
Chain Length:403
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TL06 Pfam ID:PF00297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S3a
Gene (Uniprot):RPS3A
Chain IDs:C (auth: C1)
Chain Length:84
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SS70 Pfam ID:PF01015
Polymer Type:polypeptide(L)
Molecule:uL4
Chain IDs:LA (auth: C2)
Chain Length:115
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polypeptide(L)
Molecule:uS5
Chain IDs:D (auth: D1)
Chain Length:69
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L5
Chain IDs:MA (auth: D2)
Chain Length:297
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:P19949
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uS5
Gene (Uniprot):RPS3
Chain IDs:E (auth: E1)
Chain Length:243
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TNM3 Pfam ID:PF07650, PF00189
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6
Gene (Uniprot):RPL6
Chain IDs:NA (auth: E2)
Chain Length:135
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SKF7 Pfam ID:PF03868, PF01159
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S4
Gene (Uniprot):RPS4X
Chain IDs:F (auth: F1)
Chain Length:263
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TK17 Pfam ID:PF08071, PF00900, PF00467, PF16121
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL30
Gene (Uniprot):LOC100341489
Chain IDs:OA (auth: F2)
Chain Length:110
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TUB1 Pfam ID:PF08079, PF00327
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S5
Gene (Uniprot):RPS5
Chain IDs:G (auth: G1)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TFM5 Pfam ID:PF00177
Polymer Type:polypeptide(L)
Molecule:eL8
Chain IDs:PA (auth: G2)
Chain Length:319
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S6
Gene (Uniprot):RPS6
Chain IDs:H (auth: H1)
Chain Length:317
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TM55 Pfam ID:PF01092
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL6
Chain IDs:QA (auth: H2)
Chain Length:192
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SWI6 Pfam ID:PF00347
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S7
Gene (Uniprot):RPS7
Chain IDs:I (auth: I1)
Chain Length:194
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SVB0
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L10
Gene (Uniprot):RPL10
Chain IDs:RA (auth: I2)
Chain Length:105
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:B7NZQ2 Pfam ID:PF00252
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S8
Gene (Uniprot):RPS8
Chain IDs:J (auth: J1)
Chain Length:208
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TJW1 Pfam ID:PF01201
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L11
Gene (Uniprot):RPL11
Chain IDs:SA (auth: J2)
Chain Length:97
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TUB8 Pfam ID:PF00281, PF00673
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S9 (Predicted)
Gene (Uniprot):RPS9
Chain IDs:K (auth: K1)
Chain Length:194
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:B7NZS8 Pfam ID:PF00163, PF01479
Protein Blast
Polymer Type:polypeptide(L)
Molecule:S10_plectin domain-ontaining protein
Chain IDs:L (auth: L1)
Chain Length:165
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TPV3 Pfam ID:PF03501
Polymer Type:polypeptide(L)
Molecule:eL13
Chain IDs:TA (auth: L2)
Chain Length:51
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S11
Gene (Uniprot):RPS11
Chain IDs:M (auth: M1)
Chain Length:158
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TRM4 Pfam ID:PF16205, PF00366
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L14
Gene (Uniprot):RPL14
Chain IDs:UA (auth: M2)
Chain Length:102
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SZ12 Pfam ID:PF01929
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S12
Gene (Uniprot):RPS12
Chain IDs:N (auth: N1)
Chain Length:132
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SFR8 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L15
Gene (Uniprot):RPL15
Chain IDs:VA (auth: N2)
Chain Length:204
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T0C1 Pfam ID:PF00827
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_S13_N domain-containing protein
Gene (Uniprot):RPS13
Chain IDs:O (auth: O1)
Chain Length:151
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SP51 Pfam ID:PF08069, PF00312
Polymer Type:polypeptide(L)
Molecule:uL13
Chain IDs:WA (auth: O2)
Chain Length:106
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polypeptide(L)
Molecule:uS11
Chain IDs:P (auth: P1)
Chain Length:168
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL22
Chain IDs:XA (auth: P2)
Chain Length:184
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SCJ6 Pfam ID:PF00237
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uS19
Gene (Uniprot):RPS15
Chain IDs:Q (auth: Q1)
Chain Length:145
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1U0Q2 Pfam ID:PF00203
Polymer Type:polypeptide(L)
Molecule:eL18
Chain IDs:YA (auth: Q2)
Chain Length:188
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S16
Gene (Uniprot):RPS16
Chain IDs:R (auth: R1)
Chain Length:146
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SGX4 Pfam ID:PF00380
Polymer Type:polypeptide(L)
Molecule:eL19
Chain IDs:ZA (auth: R2)
Chain Length:137
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eS17
Gene (Uniprot):RPS17
Chain IDs:S (auth: S1)
Chain Length:135
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TU13 Pfam ID:PF00833
Polymer Type:polypeptide(L)
Molecule:eL20
Chain IDs:AB (auth: S2)
Chain Length:318
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eS13
Gene (Uniprot):RPS18
Chain IDs:T (auth: T1)
Chain Length:152
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TPG3 Pfam ID:PF00416
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL21
Gene (Uniprot):RPL21
Chain IDs:BB (auth: T2)
Chain Length:160
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SHQ2 Pfam ID:PF01157
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eS19
Gene (Uniprot):RPS19
Chain IDs:U (auth: U1)
Chain Length:145
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TN62 Pfam ID:PF01090
Polymer Type:polypeptide(L)
Molecule:eL22
Chain IDs:CB (auth: U2)
Chain Length:128
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_S10 domain-containing protein
Gene (Uniprot):RPS20
Chain IDs:V (auth: V1)
Chain Length:119
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SIZ2 Pfam ID:PF00338
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L23
Gene (Uniprot):RPL23
Chain IDs:DB (auth: V2)
Chain Length:140
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T6D1 Pfam ID:PF00238
Polymer Type:polypeptide(L)
Molecule:eS21
Chain IDs:W (auth: W1)
Chain Length:83
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:TRASH domain-containing protein
Gene (Uniprot):RPL24
Chain IDs:EB (auth: W2)
Chain Length:157
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SE28 Pfam ID:PF01246
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S15a
Gene (Uniprot):RPS15A
Chain IDs:X (auth: X1)
Chain Length:130
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TG89 Pfam ID:PF00410
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L23eN domain-containing protein
Gene (Uniprot):RPL23A
Chain IDs:FB (auth: X2)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SE76 Pfam ID:PF03939, PF00276
Polymer Type:polypeptide(L)
Molecule:poly-lysine nascent chain
Chain IDs:EC (auth: XX)
Chain Length:16
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polypeptide(L)
Molecule:uS12
Chain IDs:Y (auth: Y1)
Chain Length:143
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L26
Gene (Uniprot):RPL26
Chain IDs:GB (auth: Y2)
Chain Length:145
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SQH0 Pfam ID:PF16906, PF00467
Polymer Type:polypeptide(L)
Molecule:eS24
Chain IDs:Z (auth: Z1)
Chain Length:130
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27
Gene (Uniprot):RPL27
Chain IDs:HB (auth: Z2)
Chain Length:136
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TXF6 Pfam ID:PF00467, PF01777
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eS25
Gene (Uniprot):RPS25
Chain IDs:AA (auth: a1)
Chain Length:125
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TDB3 Pfam ID:PF03297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L18e/L15P domain-containing protein
Gene (Uniprot):RPL27A
Chain IDs:IB (auth: a2)
Chain Length:257
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SNY0 Pfam ID:PF00828
Polymer Type:polypeptide(L)
Molecule:eS26
Chain IDs:BA (auth: b1)
Chain Length:295
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polypeptide(L)
Molecule:eL29
Chain IDs:JB (auth: b2)
Chain Length:403
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S27
Gene (Uniprot):RPS27
Chain IDs:CA (auth: c1)
Chain Length:84
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TZ76 Pfam ID:PF01667
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L7Ae domain-containing protein
Gene (Uniprot):RPL30
Chain IDs:KB (auth: c2)
Chain Length:115
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TDL2 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S28
Gene (Uniprot):RPS28
Chain IDs:DA (auth: d1)
Chain Length:69
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TIB4 Pfam ID:PF01200
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL31
Gene (Uniprot):RPL31
Chain IDs:LB (auth: d2)
Chain Length:297
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SHG0 Pfam ID:PF01198
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uS14
Gene (Uniprot):RPS29
Chain IDs:EA (auth: e1)
Chain Length:243
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1U7M4 Pfam ID:PF00253
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL32
Chain IDs:MB (auth: e2)
Chain Length:135
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TUN8 Pfam ID:PF01655
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S30
Gene (Uniprot):FAU
Chain IDs:FA (auth: f1)
Chain Length:263
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T8A2 Pfam ID:PF00240, PF04758
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL33
Gene (Uniprot):RPL35A
Chain IDs:NB (auth: f2)
Chain Length:110
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SF08 Pfam ID:PF01247
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S27a
Gene (Uniprot):RPS27A
Chain IDs:GA (auth: g1)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SK22 Pfam ID:PF00240, PF01599
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL34
Chain IDs:OB (auth: g2)
Chain Length:319
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TXG5 Pfam ID:PF01199
Protein Blast
Polymer Type:polypeptide(L)
Molecule:WD_REPEATS_REGION domain-containing protein
Gene (Uniprot):RACK1
Chain IDs:HA (auth: h1)
Chain Length:317
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SJB4 Pfam ID:PF00400
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL29
Gene (Uniprot):RPL35
Chain IDs:PB (auth: h2)
Chain Length:192
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SIT5 Pfam ID:PF00831
Polymer Type:polyribonucleotide
Molecule:polyA mRNA
Chain IDs:IA (auth: i1)
Chain Length:194
Number of Molecules:1
Biological Source:Homo sapiens
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36
Gene (Uniprot):RPL36
Chain IDs:QB (auth: i2)
Chain Length:105
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TTQ5 Pfam ID:PF01158
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37
Gene (Uniprot):RPL37
Chain IDs:RB (auth: j2)
Chain Length:97
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:U3KPD5 Pfam ID:PF01907
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL38
Gene (Uniprot):RPL38
Chain IDs:SB (auth: k2)
Chain Length:70
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1U001 Pfam ID:PF01781
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL39
Gene (Uniprot):LOC100343258
Chain IDs:TB (auth: l2)
Chain Length:51
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TTN1 Pfam ID:PF00832
Polymer Type:polypeptide(L)
Molecule:eL40
Chain IDs:UB (auth: m2)
Chain Length:102
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60s ribosomal protein l41
Gene (Uniprot):RPL41
Chain IDs:VB (auth: n2)
Chain Length:204
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:A0A087WNH4 Pfam ID:PF05162
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL42
Chain IDs:WB (auth: o2)
Chain Length:106
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T040 Pfam ID:PF00935
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL43
Gene (Uniprot):RPL37A
Chain IDs:XB (auth: p2)
Chain Length:184
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SY53 Pfam ID:PF01780
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L28e domain-containing protein
Gene (Uniprot):RPL28
Chain IDs:YB (auth: r2)
Chain Length:137
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1U7L1 Pfam ID:PF01778
Polymer Type:polypeptide(L)
Molecule:uL10
Chain IDs:ZB (auth: s2)
Chain Length:318
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L12
Gene (Uniprot):RPL12
Chain IDs:AC (auth: t2)
Chain Length:160
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SMR7 Pfam ID:PF03946, PF00298
Ligand Molecules
MG
SPD
ZN
Primary Citation
Mechanism of ribosome stalling during translation of a poly(A) tail.
Nat.Struct.Mol.Biol. 26 1132 1140 (2019)
PMID: 31768042 DOI: 10.1038/s41594-019-0331-x

Abstact

Faulty or damaged messenger RNAs are detected by the cell when translating ribosomes stall during elongation and trigger pathways of mRNA decay, nascent protein degradation and ribosome recycling. The most common mRNA defect in eukaryotes is probably inappropriate polyadenylation at near-cognate sites within the coding region. How ribosomes stall selectively when they encounter poly(A) is unclear. Here, we use biochemical and structural approaches in mammalian systems to show that poly-lysine, encoded by poly(A), favors a peptidyl-transfer RNA conformation suboptimal for peptide bond formation. This conformation partially slows elongation, permitting poly(A) mRNA in the ribosome's decoding center to adopt a ribosomal RNA-stabilized single-stranded helix. The reconfigured decoding center clashes with incoming aminoacyl-tRNA, thereby precluding elongation. Thus, coincidence detection of poly-lysine in the exit tunnel and poly(A) in the decoding center allows ribosomes to detect aberrant mRNAs selectively, stall elongation and trigger downstream quality control pathways essential for cellular homeostasis.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
6SGC