6TB3 image
Deposition Date 2019-10-31
Release Date 2020-04-22
Last Version Date 2024-05-22
Entry Detail
PDB ID:
6TB3
Keywords:
Title:
yeast 80S ribosome in complex with the Not5 subunit of the CCR4-NOT complex
Biological Source:
Method Details:
Experimental Method:
Resolution:
2.80 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:Saccharomyces cerevisiae S288C 18S ribosomal RNA (RDN18-1), rRNA
Chain IDs:A (auth: 2)
Chain Length:1798
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S3
Gene (Uniprot):RPS3
Chain IDs:G (auth: A)
Chain Length:222
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L8-A
Gene (Uniprot):RPL8A
Chain IDs:UA (auth: AA)
Chain Length:233
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L23-A
Gene (Uniprot):RPL23A
Chain IDs:IB (auth: AB)
Chain Length:136
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36-A
Gene (Uniprot):RPL36A
Chain IDs:VB (auth: AC)
Chain Length:99
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L9-A
Gene (Uniprot):RPL9A
Chain IDs:VA (auth: AD)
Chain Length:191
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L24-A
Gene (Uniprot):RPL24A
Chain IDs:JB (auth: AE)
Chain Length:126
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L37-A
Gene (Uniprot):RPL37A
Chain IDs:WB (auth: AF)
Chain Length:81
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L11-B
Gene (Uniprot):RPL11B
Chain IDs:XA (auth: AG)
Chain Length:169
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L25
Gene (Uniprot):RPL25
Chain IDs:KB (auth: AH)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L38
Gene (Uniprot):RPL38
Chain IDs:XB (auth: AI)
Chain Length:77
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13-A
Gene (Uniprot):RPL13A
Chain IDs:YA (auth: AJ)
Chain Length:193
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L26-A
Gene (Uniprot):RPL26A
Chain IDs:LB (auth: AK)
Chain Length:125
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L39
Gene (Uniprot):RPL39
Chain IDs:YB (auth: AL)
Chain Length:50
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L14-A
Gene (Uniprot):RPL14A
Chain IDs:ZA (auth: AM)
Chain Length:136
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27-A
Gene (Uniprot):RPL27A
Chain IDs:MB (auth: AN)
Chain Length:135
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:Ubiquitin-60S ribosomal protein L40
Gene (Uniprot):RPL40A
Chain IDs:ZB (auth: AO)
Chain Length:52
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L42-A
Gene (Uniprot):RPL42A
Chain IDs:BC (auth: AP)
Chain Length:103
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L15-A
Gene (Uniprot):RPL15A
Chain IDs:AB (auth: AQ)
Chain Length:203
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L28
Gene (Uniprot):RPL28
Chain IDs:NB (auth: AR)
Chain Length:148
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L41-B
Gene (Uniprot):RPL41B
Chain IDs:AC (auth: AS)
Chain Length:25
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L43-A
Gene (Uniprot):RPL43A
Chain IDs:CC (auth: AT)
Chain Length:91
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L16-A
Gene (Uniprot):RPL16A
Chain IDs:BB (auth: AU)
Chain Length:197
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Gene (Uniprot):RPL29
Chain IDs:OB (auth: AV)
Chain Length:58
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L2-A
Gene (Uniprot):RPL2A
Chain IDs:OA (auth: AW)
Chain Length:251
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L17-A
Gene (Uniprot):RPL17A
Chain IDs:CB (auth: AX)
Chain Length:183
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L30
Gene (Uniprot):RPL30
Chain IDs:PB (auth: AY)
Chain Length:96
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S5
Chain IDs:I (auth: B)
Chain Length:129
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L3
Gene (Uniprot):RPL3
Chain IDs:PA (auth: BA)
Chain Length:386
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L18-A
Gene (Uniprot):RPL18A
Chain IDs:DB (auth: BB)
Chain Length:185
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L31-A
Gene (Uniprot):RPL31A
Chain IDs:QB (auth: BC)
Chain Length:109
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L10
Gene (Uniprot):RPL10
Chain IDs:WA (auth: BD)
Chain Length:218
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L4-A
Gene (Uniprot):RPL4A
Chain IDs:QA (auth: BE)
Chain Length:361
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L19-A
Gene (Uniprot):RPL19A
Chain IDs:EB (auth: BF)
Chain Length:188
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L32
Gene (Uniprot):RPL32
Chain IDs:RB (auth: BG)
Chain Length:127
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L20-A
Gene (Uniprot):RPL20A
Chain IDs:FB (auth: BH)
Chain Length:171
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L5
Gene (Uniprot):RPL5
Chain IDs:RA (auth: BI)
Chain Length:294
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L21-A
Gene (Uniprot):RPL21A
Chain IDs:GB (auth: BJ)
Chain Length:159
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L33-A
Gene (Uniprot):RPL33A
Chain IDs:SB (auth: BK)
Chain Length:106
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L22-A
Gene (Uniprot):RPL22A
Chain IDs:HB (auth: BL)
Chain Length:100
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6-B
Gene (Uniprot):RPL6B
Chain IDs:SA (auth: BM)
Chain Length:175
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L34-A
Gene (Uniprot):RPL34A
Chain IDs:TB (auth: BN)
Chain Length:112
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L7-A
Gene (Uniprot):RPL7A
Chain IDs:TA (auth: BO)
Chain Length:222
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35-A
Gene (Uniprot):RPL35A
Chain IDs:UB (auth: BP)
Chain Length:119
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:25S rRNA
Chain IDs:KA (auth: BQ)
Chain Length:3223
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:5S rRNA
Chain IDs:MA (auth: BR)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:5.8S rRNA
Chain IDs:NA (auth: BS)
Chain Length:158
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L1-A
Gene (Uniprot):RPL1A
Chain IDs:LA (auth: BT)
Chain Length:204
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L41-A
Chain IDs:DC (auth: BV)
Chain Length:22
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:General negative regulator of transcription subunit 5
Gene (Uniprot):NOT5
Chain IDs:EC (auth: BW)
Chain Length:112
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S10-A
Gene (Uniprot):RPS10A
Chain IDs:N (auth: C)
Chain Length:92
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S12
Gene (Uniprot):RPS12
Chain IDs:P (auth: D)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S15
Gene (Uniprot):RPS15
Chain IDs:E
Chain Length:117
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S16-A
Gene (Uniprot):RPS16A
Chain IDs:S (auth: F)
Chain Length:81
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S17-B
Gene (Uniprot):RPS17B
Chain IDs:T (auth: G)
Chain Length:60
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S18-A
Gene (Uniprot):RPS18A
Chain IDs:U (auth: H)
Chain Length:145
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S19-A
Gene (Uniprot):RPS19A
Chain IDs:V (auth: I)
Chain Length:143
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S20
Gene (Uniprot):RPS20
Chain IDs:W (auth: J)
Chain Length:100
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S25-A
Gene (Uniprot):RPS25A
Chain IDs:CA (auth: K)
Chain Length:82
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S28-A
Gene (Uniprot):RPS28A
Chain IDs:JA (auth: L)
Chain Length:3
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S29-A
Gene (Uniprot):RPS29A
Chain IDs:FA (auth: M)
Chain Length:53
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:Ubiquitin-40S ribosomal protein S31
Gene (Uniprot):RPS31
Chain IDs:HA (auth: N)
Chain Length:73
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:Guanine nucleotide-binding protein subunit beta-like protein
Gene (Uniprot):ASC1
Chain IDs:IA (auth: O)
Chain Length:312
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S0-A
Gene (Uniprot):RPS0A
Chain IDs:C (auth: P)
Chain Length:206
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S1-A
Gene (Uniprot):RPS1A
Chain IDs:D (auth: Q)
Chain Length:232
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S2
Gene (Uniprot):RPS2
Chain IDs:F (auth: R)
Chain Length:216
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S4-A
Gene (Uniprot):RPS4A
Chain IDs:H (auth: S)
Chain Length:258
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S6-A
Gene (Uniprot):RPS6A
Chain IDs:J (auth: T)
Chain Length:228
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S7-A
Gene (Uniprot):RPS7A
Chain IDs:K (auth: U)
Chain Length:184
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S8
Chain IDs:L (auth: V)
Chain Length:187
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S9-A
Gene (Uniprot):RPS9A
Chain IDs:M (auth: W)
Chain Length:184
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S11-A
Gene (Uniprot):RPS11A
Chain IDs:O (auth: X)
Chain Length:142
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S13
Gene (Uniprot):RPS13
Chain IDs:Q (auth: Y)
Chain Length:150
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S14-B
Gene (Uniprot):RPS14B
Chain IDs:R (auth: Z)
Chain Length:127
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S21-A
Gene (Uniprot):RPS21A
Chain IDs:Y (auth: a)
Chain Length:222
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S22-A
Gene (Uniprot):RPS22A
Chain IDs:Z (auth: b)
Chain Length:129
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S23-A
Gene (Uniprot):RPS23A
Chain IDs:AA (auth: c)
Chain Length:92
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S24-A
Gene (Uniprot):RPS24A
Chain IDs:BA (auth: d)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S26-B
Gene (Uniprot):RPS26B
Chain IDs:DA (auth: e)
Chain Length:117
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S27-A
Gene (Uniprot):RPS27A
Chain IDs:EA (auth: f)
Chain Length:81
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S30-A
Gene (Uniprot):RPS30A
Chain IDs:GA (auth: g)
Chain Length:60
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:mRNA
Chain IDs:B (auth: l)
Chain Length:3
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:tRNA
Chain IDs:X (auth: n)
Chain Length:73
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Primary Citation
The Ccr4-Not complex monitors the translating ribosome for codon optimality.
Science 368 ? ? (2020)
PMID: 32299921 DOI: 10.1126/science.aay6912

Abstact

Control of messenger RNA (mRNA) decay rate is intimately connected to translation elongation, but the spatial coordination of these events is poorly understood. The Ccr4-Not complex initiates mRNA decay through deadenylation and activation of decapping. We used a combination of cryo-electron microscopy, ribosome profiling, and mRNA stability assays to examine the recruitment of Ccr4-Not to the ribosome via specific interaction of the Not5 subunit with the ribosomal E-site in Saccharomyces cerevisiae This interaction occurred when the ribosome lacked accommodated A-site transfer RNA, indicative of low codon optimality. Loss of the interaction resulted in the inability of the mRNA degradation machinery to sense codon optimality. Our findings elucidate a physical link between the Ccr4-Not complex and the ribosome and provide mechanistic insight into the coupling of decoding efficiency with mRNA stability.

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Primary Citation of related structures