ISDA

Deposition Date 2016-10-02

Release Date 2016-11-30

Last Version Date 2024-11-13

Entry Detail

PDB ID:

5LZT

Keywords:

RIBOSOME

Title:

Structure of the mammalian ribosomal termination complex with eRF1 and eRF3.

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)
Oryctolagus cuniculus (Taxon ID: 9986)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

3.65 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

Download Validation Report

Macromolecular Entities

Polymer Type:polypeptide(L)
Molecule:Nascent chain
Chain IDs:SA (auth: 1)
Chain Length:15
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Polymer Type:polyribonucleotide
Molecule:P-site tRNA
Chain IDs:TA (auth: 2)
Chain Length:76
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Polymer Type:polyribonucleotide
Molecule:E-site tRNA
Chain IDs:UA (auth: 3)
Chain Length:75
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Polymer Type:polyribonucleotide
Molecule:28S ribosomal RNA
Chain IDs:VA (auth: 5)
Chain Length:3543
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Polymer Type:polyribonucleotide
Molecule:5S ribosomal RNA
Chain IDs:WA (auth: 7)
Chain Length:120
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Polymer Type:polyribonucleotide
Molecule:5.8S ribosomal RNA
Chain IDs:XA (auth: 8)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Polymer Type:polyribonucleotide
Molecule:18S ribosomal RNA
Chain IDs:YA (auth: 9)
Chain Length:1869
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL2
Gene (Uniprot):RPL8
Chain IDs:A
Chain Length:148
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TT27 Pfam ID:PF00181, PF03947

Polymer Type:polypeptide(L)
Molecule:uS2
Chain IDs:ZA (auth: AA)
Chain Length:295
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL3
Gene (Uniprot):RPL3
Chain IDs:B
Chain Length:403
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TL06 Pfam ID:PF00297

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS1
Gene (Uniprot):RPS3A
Chain IDs:AB (auth: BB)
Chain Length:264
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SS70 Pfam ID:PF01015

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL4
Gene (Uniprot):RPL4
Chain IDs:C
Chain Length:115
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SVW5 Pfam ID:PF00573, PF14374

Polymer Type:polypeptide(L)
Molecule:uS5
Chain IDs:BB (auth: CC)
Chain Length:293
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL18
Chain IDs:D
Chain Length:125
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:P19949

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uS3
Gene (Uniprot):RPS3
Chain IDs:CB (auth: DD)
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:eL6
Gene (Uniprot):RPL6
Chain IDs:E
Chain Length:135
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SKF7 Pfam ID:PF03868, PF01159

Polymer Type:polypeptide(L)
Molecule:eS4
Chain IDs:DB (auth: EE)
Chain Length:263
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL30
Gene (Uniprot):LOC100341489
Chain IDs:F
Chain Length:247
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TUB1 Pfam ID:PF08079, PF00327

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uS7
Gene (Uniprot):RPS5
Chain IDs:EB (auth: FF)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TFM5 Pfam ID:PF00177

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL8
Gene (Uniprot):RPL7A
Chain IDs:G
Chain Length:319
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1STW0 Pfam ID:PF01248

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS6
Gene (Uniprot):RPS6
Chain IDs:FB (auth: GG)
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:H
Chain Length:192
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SWI6 Pfam ID:PF00347

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS7
Gene (Uniprot):RPS7
Chain IDs:GB (auth: HH)
Chain Length:15
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SVB0

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL16
Gene (Uniprot):RPL10
Chain IDs:I
Chain Length:105
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:B7NZQ2 Pfam ID:PF00252

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS8
Gene (Uniprot):RPS8
Chain IDs:HB (auth: II)
Chain Length:208
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TJW1 Pfam ID:PF01201

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL5
Gene (Uniprot):RPL11
Chain IDs:J
Chain Length:178
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TUB8 Pfam ID:PF00281, PF00673

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uS4
Gene (Uniprot):RPS9
Chain IDs:IB (auth: JJ)
Chain Length:637
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:B7NZS8 Pfam ID:PF00163, PF01479

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS10
Chain IDs:JB (auth: KK)
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:K (auth: L)
Chain Length:211
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uS17
Gene (Uniprot):RPS11
Chain IDs:KB (auth: LL)
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:eL14
Gene (Uniprot):RPL14
Chain IDs:L (auth: M)
Chain Length:218
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SZ12 Pfam ID:PF01929

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS12
Gene (Uniprot):RPS12
Chain IDs:LB (auth: MM)
Chain Length:132
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SFR8 Pfam ID:PF01248

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL15
Gene (Uniprot):RPL15
Chain IDs:M (auth: N)
Chain Length:25
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1T0C1 Pfam ID:PF00827

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uS15
Gene (Uniprot):RPS13
Chain IDs:MB (auth: NN)
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:N (auth: O)
Chain Length:106
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uS11
Gene (Uniprot):RPS14
Chain IDs:NB (auth: OO)
Chain Length:168
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1T1F0 Pfam ID:PF00411

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL22
Chain IDs:O (auth: P)
Chain Length:92
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:OB (auth: PP)
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:P (auth: Q)
Chain Length:188
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uS9
Gene (Uniprot):RPS16
Chain IDs:PB (auth: QQ)
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:Q (auth: R)
Chain Length:196
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS17
Gene (Uniprot):RPS17
Chain IDs:QB (auth: RR)
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:R (auth: S)
Chain Length:318
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uS13
Gene (Uniprot):RPS18
Chain IDs:RB (auth: SS)
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:S (auth: T)
Chain Length:165
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:SB (auth: TT)
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:T (auth: U)
Chain Length:128
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uS10
Gene (Uniprot):RPS20
Chain IDs:TB (auth: UU)
Chain Length:119
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SIZ2 Pfam ID:PF00338

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL14
Gene (Uniprot):RPL23
Chain IDs:U (auth: V)
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:UB (auth: VV)
Chain Length:83
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL24
Gene (Uniprot):RPL24
Chain IDs:V (auth: W)
Chain Length:157
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SE28 Pfam ID:PF01246

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uS8
Gene (Uniprot):RPS15A
Chain IDs:VB (auth: WW)
Chain Length:130
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TG89 Pfam ID:PF00410

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL23
Gene (Uniprot):RPL23A
Chain IDs:W (auth: X)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SE76 Pfam ID:PF03939, PF00276

Polymer Type:polypeptide(L)
Molecule:uS12
Chain IDs:WB (auth: XX)
Chain Length:143
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL24
Gene (Uniprot):RPL26
Chain IDs:X (auth: Y)
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:XB (auth: YY)
Chain Length:130
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL27
Gene (Uniprot):RPL27
Chain IDs:Y (auth: Z)
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:YB (auth: ZZ)
Chain Length:125
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TDB3 Pfam ID:PF03297

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL15
Gene (Uniprot):RPL27A
Chain IDs:Z (auth: a)
Chain Length:148
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SNY0 Pfam ID:PF00828

Polymer Type:polypeptide(L)
Molecule:eS26
Chain IDs:ZB (auth: aa)
Chain Length:295
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL29
Gene (Uniprot):RPL29
Chain IDs:AA (auth: b)
Chain Length:403
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SGR6 Pfam ID:PF01779

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS27
Gene (Uniprot):RPS27
Chain IDs:AC (auth: bb)
Chain Length:264
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TZ76 Pfam ID:PF01667

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL30
Gene (Uniprot):RPL30
Chain IDs:BA (auth: c)
Chain Length:115
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TDL2 Pfam ID:PF01248

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS28
Gene (Uniprot):RPS28
Chain IDs:BC (auth: cc)
Chain Length:293
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:CA (auth: d)
Chain Length:125
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:CC (auth: dd)
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:DA (auth: e)
Chain Length:135
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TUN8 Pfam ID:PF01655

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS30
Gene (Uniprot):FAU
Chain IDs:DC (auth: ee)
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:EA (auth: f)
Chain Length:247
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SF08 Pfam ID:PF01247

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eS31
Gene (Uniprot):RPS27A
Chain IDs:EC (auth: ff)
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:FA (auth: g)
Chain Length:319
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TXG5 Pfam ID:PF01199

Protein Blast

Polymer Type:polypeptide(L)
Molecule:RACK1
Gene (Uniprot):RACK1
Chain IDs:FC (auth: gg)
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:GA (auth: h)
Chain Length:192
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SIT5 Pfam ID:PF00831

Polymer Type:polyribonucleotide
Molecule:mRNA (UGA stop codon)
Chain IDs:GC (auth: hh)
Chain Length:15
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL36
Gene (Uniprot):RPL36
Chain IDs:HA (auth: i)
Chain Length:105
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TTQ5 Pfam ID:PF01158

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eRF1
Gene (Uniprot):ETF1
Chain IDs:HC (auth: ii)
Chain Length:208
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P62495 Pfam ID:PF03463, PF03464, PF03465

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL37
Gene (Uniprot):RPL37
Chain IDs:IA (auth: j)
Chain Length:178
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:U3KPD5 Pfam ID:PF01907

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eRF3a
Gene (Uniprot):GSPT1
Chain IDs:IC (auth: jj)
Chain Length:637
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P15170 Pfam ID:PF00009, PF03144, PF22594

Polymer Type:polypeptide(L)
Molecule:eL38
Chain IDs:JA (auth: k)
Chain Length:70
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL39
Gene (Uniprot):LOC100343258
Chain IDs:KA (auth: l)
Chain Length:211
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1TTN1 Pfam ID:PF00832

Polymer Type:polypeptide(L)
Molecule:eL40
Chain IDs:LA (auth: m)
Chain Length:218
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Polymer Type:polypeptide(L)
Molecule:eL41
Chain IDs:MA (auth: n)
Chain Length:25
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL42
Chain IDs:NA (auth: o)
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:OA (auth: p)
Chain Length:92
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SY53 Pfam ID:PF01780

Protein Blast

Polymer Type:polypeptide(L)
Molecule:eL28
Gene (Uniprot):RPL28
Chain IDs:PA (auth: r)
Chain Length:196
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1U7L1 Pfam ID:PF01778

Polymer Type:polypeptide(L)
Molecule:uL10
Chain IDs:QA (auth: s)
Chain Length:318
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

Protein Blast

Polymer Type:polypeptide(L)
Molecule:uL11
Gene (Uniprot):RPL12
Chain IDs:RA (auth: t)
Chain Length:165
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:G1SMR7 Pfam ID:PF03946, PF00298

Ligand Molecules

GCP

Primary Citation

Decoding Mammalian Ribosome-mRNA States by Translational GTPase Complexes.

Shao, S, Murray, J, Brown, A, Taunton, J, Ramakrishnan, V, Hegde, R.S, Shao, S, Murray, J, Brown, A, Taunton, J, Ramakrishnan, V, Hegde, R.S.Show

Cell 167 1229 1240.e15 (2016)

PMID: 27863242 DOI: 10.1016/j.cell.2016.10.046

Abstact

In eukaryotes, accurate protein synthesis relies on a family of translational GTPases that pair with specific decoding factors to decipher the mRNA code on ribosomes. We present structures of the mammalian ribosome engaged with decoding factor⋅GTPase complexes representing intermediates of translation elongation (aminoacyl-tRNA⋅eEF1A), termination (eRF1⋅eRF3), and ribosome rescue (Pelota⋅Hbs1l). Comparative analyses reveal that each decoding factor exploits the plasticity of the ribosomal decoding center to differentially remodel ribosomal proteins and rRNA. This leads to varying degrees of large-scale ribosome movements and implies distinct mechanisms for communicating information from the decoding center to each GTPase. Additional structural snapshots of the translation termination pathway reveal the conformational changes that choreograph the accommodation of decoding factors into the peptidyl transferase center. Our results provide a structural framework for how different states of the mammalian ribosome are selectively recognized by the appropriate decoding factor⋅GTPase complex to ensure translational fidelity.

Legend

Protein

Chemical

Disease

Primary Citation of related structures