7A01 image
Deposition Date 2020-08-05
Release Date 2020-12-30
Last Version Date 2024-11-13
Entry Detail
PDB ID:
7A01
Keywords:
Title:
The Halastavi arva virus intergenic region IRES promotes translation by the simplest possible initiation mechanism
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
3.60 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L14
Chain IDs:NA (auth: 02)
Chain Length:138
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L15
Gene (Uniprot):RPL15
Chain IDs:OA (auth: 12)
Chain Length:203
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L30
Gene (Uniprot):RPL30
Chain IDs:YA (auth: 13)
Chain Length:94
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27
Gene (Uniprot):RPL27
Chain IDs:PA (auth: 22)
Chain Length:135
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S RIBOSOMAL PROTEIN EL19
Gene (Uniprot):RPL19
Chain IDs:QA (auth: 32)
Chain Length:180
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein
Gene (Uniprot):RPL10A
Chain IDs:RA (auth: 42)
Chain Length:217
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL3
Gene (Uniprot):RPL3
Chain IDs:SA (auth: 52)
Chain Length:394
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S RIBOSOMAL PROTEIN EL20
Gene (Uniprot):RPL18A
Chain IDs:TA (auth: 62)
Chain Length:175
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL21
Gene (Uniprot):RPL21
Chain IDs:UA (auth: 72)
Chain Length:159
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L22
Gene (Uniprot):RPL22
Chain IDs:VA (auth: 82)
Chain Length:99
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein
Gene (Uniprot):RPL8
Chain IDs:R (auth: 92)
Chain Length:244
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL29
Gene (Uniprot):RPL35
Chain IDs:S (auth: A2)
Chain Length:122
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ribosomal protein uS19
Gene (Uniprot):RPS15
Chain IDs:EB (auth: A3)
Chain Length:127
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36
Gene (Uniprot):RPL36
Chain IDs:T (auth: B2)
Chain Length:102
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein
Gene (Uniprot):RPS16
Chain IDs:PB (auth: B3)
Chain Length:237
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37
Gene (Uniprot):RPL37
Chain IDs:U (auth: C2)
Chain Length:86
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein
Gene (Uniprot):RPS17
Chain IDs:TB (auth: C3)
Chain Length:206
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ribosomal protein eL39
Gene (Uniprot):RPL39
Chain IDs:V (auth: D2)
Chain Length:50
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S RIBOSOMAL PROTEIN ES21
Chain IDs:VB (auth: D3)
Chain Length:83
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:INTERNAL RIBOSOME ENTRY SITE
Chain IDs:A (auth: E1)
Chain Length:153
Number of Molecules:1
Biological Source:Halastavi arva RNA virus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S RIBOSOMAL PROTEIN EL40
Gene (Uniprot):UBA52
Chain IDs:W (auth: E2)
Chain Length:52
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:S10_plectin domain-containing protein
Gene (Uniprot):RPS10
Chain IDs:XB (auth: E3)
Chain Length:98
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL42
Gene (Uniprot):RPL36A
Chain IDs:X (auth: F2)
Chain Length:104
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ribosomal protein uS15
Gene (Uniprot):RPS13
Chain IDs:RB (auth: F3)
Chain Length:64
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L5
Chain IDs:Y (auth: G2)
Chain Length:292
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S11
Gene (Uniprot):RPS11
Chain IDs:AB (auth: G3)
Chain Length:153
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ribosomal protein uS13
Gene (Uniprot):RPS18
Chain IDs:BB (auth: G5)
Chain Length:137
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL22
Chain IDs:Z (auth: H2)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ribosomal protein uS14
Gene (Uniprot):RPS29
Chain IDs:YB (auth: H3)
Chain Length:53
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein
Gene (Uniprot):RPS19
Chain IDs:ZB (auth: H5)
Chain Length:141
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ribosomal protein eL43
Gene (Uniprot):RPL37A
Chain IDs:AA (auth: I2)
Chain Length:91
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_S10 domain-containing protein
Chain IDs:BC (auth: I3)
Chain Length:104
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S24
Gene (Uniprot):RPS24
Chain IDs:CC (auth: I5)
Chain Length:126
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein
Gene (Uniprot):RPL28
Chain IDs:BA (auth: J2)
Chain Length:125
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S15a
Gene (Uniprot):RPS15A
Chain IDs:MB (auth: J5)
Chain Length:129
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S acidic ribosomal protein P0
Gene (Uniprot):RPLP0
Chain IDs:CA (auth: K2)
Chain Length:131
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:18S RIBOSOMAL RNA
Chain IDs:WA (auth: K3)
Chain Length:1801
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L10 (Predicted)
Gene (Uniprot):RPL10
Chain IDs:DA (auth: L2)
Chain Length:63
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S27
Gene (Uniprot):RPS27
Chain IDs:DC (auth: L3)
Chain Length:83
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein
Gene (Uniprot):RPL12
Chain IDs:EA (auth: M2)
Chain Length:119
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ribosomal protein eS25
Gene (Uniprot):RPS25
Chain IDs:EC (auth: M3)
Chain Length:75
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S5
Gene (Uniprot):RPS5
Chain IDs:NB (auth: N3)
Chain Length:191
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S RIBOSOMAL PROTEIN ES26
Gene (Uniprot):RPS26
Chain IDs:FC (auth: O3)
Chain Length:98
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S RIBOSOMAL PROTEIN ES7
Gene (Uniprot):RPS7
Chain IDs:AC (auth: P3)
Chain Length:189
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S27a
Gene (Uniprot):RPS27A
Chain IDs:ZA (auth: Q3)
Chain Length:188
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L6e_N domain-containing protein
Chain IDs:FA (auth: R2)
Chain Length:35
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S RIBOSOMAL PROTEIN EL18
Gene (Uniprot):RPL18
Chain IDs:GA (auth: S2)
Chain Length:187
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6
Gene (Uniprot):RPL6
Chain IDs:HA (auth: T2)
Chain Length:201
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S23
Gene (Uniprot):RPS23
Chain IDs:FB (auth: T3)
Chain Length:141
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL30
Gene (Uniprot):RPL7
Chain IDs:IA (auth: U2)
Chain Length:107
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S_SA_C domain-containing protein
Chain IDs:GB (auth: U3)
Chain Length:208
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S RIBOSOMAL PROTEIN EL8
Gene (Uniprot):RPL7A
Chain IDs:JA (auth: V2)
Chain Length:128
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S3a
Gene (Uniprot):RPS3A
Chain IDs:HB (auth: V3)
Chain Length:213
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein
Gene (Uniprot):RPL9
Chain IDs:KA (auth: W2)
Chain Length:190
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polypeptide(L)
Molecule:S5 DRBM domain-containing protein
Chain IDs:IB (auth: W3)
Chain Length:218
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L10 (Predicted)
Gene (Uniprot):RPL10
Chain IDs:LA (auth: X2)
Chain Length:109
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60s ribosomal protein l41
Gene (Uniprot):RPL41
Chain IDs:JB (auth: X3)
Chain Length:23
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L11
Gene (Uniprot):RPL11
Chain IDs:MA (auth: Y2)
Chain Length:114
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S3
Gene (Uniprot):RPS3
Chain IDs:KB (auth: Y3)
Chain Length:227
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ribosomal protein RACK1
Gene (Uniprot):RACK1
Chain IDs:CB (auth: a3)
Chain Length:127
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein
Gene (Uniprot):RPS14
Chain IDs:DB (auth: a5)
Chain Length:136
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13
Chain IDs:GC (auth: a7)
Chain Length:210
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S6
Gene (Uniprot):RPS6
Chain IDs:OB (auth: b3)
Chain Length:237
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S8
Gene (Uniprot):RPS8
Chain IDs:SB (auth: c3)
Chain Length:206
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:5S RIBOSOMAL RNA
Chain IDs:D (auth: d2)
Chain Length:50
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S9 (Predicted)
Gene (Uniprot):RPS9
Chain IDs:UB (auth: d3)
Chain Length:83
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:28S RIBOSOMAL RNA
Chain IDs:B (auth: e2)
Chain Length:52
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S12
Gene (Uniprot):RPS12
Chain IDs:WB (auth: e3)
Chain Length:98
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ribosomal protein eS28
Gene (Uniprot):RPS28
Chain IDs:QB (auth: f3)
Chain Length:64
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:5.8S RIBOSOMAL RNA
Chain IDs:C (auth: h2)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S4,40S ribosomal protein S4
Gene (Uniprot):RPS4X
Chain IDs:LB (auth: j3)
Chain Length:262
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL14
Gene (Uniprot):RPL23
Chain IDs:F (auth: k2)
Chain Length:131
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L24
Gene (Uniprot):RPL24
Chain IDs:G (auth: l2)
Chain Length:63
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein
Gene (Uniprot):RPL23A
Chain IDs:H (auth: m2)
Chain Length:119
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L26
Gene (Uniprot):RPL26
Chain IDs:I (auth: o2)
Chain Length:134
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein
Gene (Uniprot):RPL38
Chain IDs:E (auth: p2)
Chain Length:69
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL15
Gene (Uniprot):RPL27A
Chain IDs:J (auth: q2)
Chain Length:147
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Chain IDs:K (auth: r2)
Chain Length:35
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S RIBOSOMAL PROTEIN ES30
Gene (Uniprot):FAU
Chain IDs:XA (auth: s3)
Chain Length:43
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL4
Gene (Uniprot):RPL4
Chain IDs:L (auth: t2)
Chain Length:201
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL31
Gene (Uniprot):RPL31
Chain IDs:M (auth: u2)
Chain Length:107
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL32
Gene (Uniprot):RPL32
Chain IDs:N (auth: v2)
Chain Length:128
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S RIBOSOMAL PROTEIN UL13
Gene (Uniprot):GW7_15288
Chain IDs:O (auth: w2)
Chain Length:190
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL33
Gene (Uniprot):RPL35A
Chain IDs:P (auth: x2)
Chain Length:109
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL34
Chain IDs:Q (auth: y2)
Chain Length:114
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Ligand Molecules
Primary Citation
The Halastavi arva Virus Intergenic Region IRES Promotes Translation by the Simplest Possible Initiation Mechanism.
Cell Rep 33 108476 108476 (2020)
PMID: 33296660 DOI: 10.1016/j.celrep.2020.108476

Abstact

Dicistrovirus intergenic region internal ribosomal entry sites (IGR IRESs) do not require initiator tRNA, an AUG codon, or initiation factors and jumpstart translation from the middle of the elongation cycle via formation of IRES/80S complexes resembling the pre-translocation state. eEF2 then translocates the [codon-anticodon]-mimicking pseudoknot I (PKI) from ribosomal A sites to P sites, bringing the first sense codon into the decoding center. Halastavi árva virus (HalV) contains an IGR that is related to previously described IGR IRESs but lacks domain 2, which enables these IRESs to bind to individual 40S ribosomal subunits. By using in vitro reconstitution and cryoelectron microscopy (cryo-EM), we now report that the HalV IGR IRES functions by the simplest initiation mechanism that involves binding to 80S ribosomes such that PKI is placed in the P site, so that the A site contains the first codon that is directly accessible for decoding without prior eEF2-mediated translocation of PKI.

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Protein

Chemical

Disease

Primary Citation of related structures