7OYB image
Deposition Date 2021-06-24
Release Date 2022-07-13
Last Version Date 2024-11-13
Entry Detail
PDB ID:
7OYB
Keywords:
RIBOSOME
Title:
Cryo-EM structure of the 6 hpf zebrafish embryo 80S ribosome
Biological Source:
Source Organism:
Danio rerio (Taxon ID: 7955)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
2.40 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
7OYB validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:18S rRNA
Chain IDs:A (auth: 22)
Chain Length:1939
Number of Molecules:1
Biological Source:Danio rerio
Polymer Type:polyribonucleotide
Molecule:28S rRNA
Chain IDs:B (auth: 51)
Chain Length:4269
Number of Molecules:1
Biological Source:Danio rerio
Polymer Type:polyribonucleotide
Molecule:5S rRNA
Chain IDs:C (auth: 71)
Chain Length:120
Number of Molecules:1
Biological Source:Danio rerio
Polymer Type:polyribonucleotide
Molecule:5.8S rRNA
Chain IDs:D (auth: 81)
Chain Length:158
Number of Molecules:1
Biological Source:Danio rerio
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L8
Gene (Uniprot):rpl8
Chain IDs:E (auth: A1)
Chain Length:257
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6P0V6 Pfam ID:PF00181, PF03947
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein SA
Gene (Uniprot):rpsa
Chain IDs:F (auth: A2)
Chain Length:115
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q803F6 Pfam ID:PF00318, PF16122
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L3
Chain IDs:G (auth: B1)
Chain Length:403
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:A0A2R8Q924 Pfam ID:PF00297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S3a
Gene (Uniprot):rps3a
Chain IDs:H (auth: B2)
Chain Length:84
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6PBY1 Pfam ID:PF01015
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L4
Gene (Uniprot):rpl4
Chain IDs:I (auth: C1)
Chain Length:375
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7ZW95 Pfam ID:PF00573, PF14374
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S2
Gene (Uniprot):rps2
Chain IDs:J (auth: C2)
Chain Length:69
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6NWC3 Pfam ID:PF00333, PF03719
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L5b
Gene (Uniprot):rpl5b
Chain IDs:K (auth: D1)
Chain Length:123
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6IQB1 Pfam ID:PF17144, PF14204
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DNA-(apurinic or apyrimidinic site) lyase
Gene (Uniprot):rps3
Chain IDs:L (auth: D2)
Chain Length:245
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7ZVD9 Pfam ID:PF07650, PF00189
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6
Gene (Uniprot):rpl6
Chain IDs:M (auth: E1)
Chain Length:135
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q567N5 Pfam ID:PF03868, PF01159
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S4, X isoform
Gene (Uniprot):rps4x
Chain IDs:N (auth: E2)
Chain Length:133
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q642H9 Pfam ID:PF08071, PF00900, PF00467, PF16121
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L7
Gene (Uniprot):rpl7
Chain IDs:O (auth: F1)
Chain Length:110
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6Q417 Pfam ID:PF08079, PF00327
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S5
Gene (Uniprot):rps5
Chain IDs:P (auth: F2)
Chain Length:204
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6PC80 Pfam ID:PF00177
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L7a
Gene (Uniprot):rpl7a
Chain IDs:Q (auth: G1)
Chain Length:117
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6PBZ1 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S6
Gene (Uniprot):rps6
Chain IDs:R (auth: G2)
Chain Length:249
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6DHL6 Pfam ID:PF01092
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L9
Gene (Uniprot):rpl9
Chain IDs:S (auth: H1)
Chain Length:123
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q5BKV9 Pfam ID:PF00347
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S7
Gene (Uniprot):rps7
Chain IDs:T (auth: H2)
Chain Length:194
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:P62084 Pfam ID:PF01251
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L10
Gene (Uniprot):rpl10
Chain IDs:U (auth: I1)
Chain Length:215
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7ZV96 Pfam ID:PF00252
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S8
Gene (Uniprot):rps8
Chain IDs:V (auth: I2)
Chain Length:208
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:P62247 Pfam ID:PF01201
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L11
Gene (Uniprot):rpl11
Chain IDs:W (auth: J1)
Chain Length:97
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6IQI6 Pfam ID:PF00281, PF00673
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S9
Gene (Uniprot):rps9
Chain IDs:X (auth: J2)
Chain Length:194
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6P5M3 Pfam ID:PF00163, PF01479
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S10
Gene (Uniprot):rps10
Chain IDs:Y (auth: K2)
Chain Length:166
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7T1J9 Pfam ID:PF03501
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13
Gene (Uniprot):rpl13
Chain IDs:Z (auth: L1)
Chain Length:50
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q90Z10 Pfam ID:PF01294
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S11
Gene (Uniprot):rps11
Chain IDs:AA (auth: L2)
Chain Length:159
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7ZV05 Pfam ID:PF16205, PF00366
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L14
Gene (Uniprot):rpl14
Chain IDs:BA (auth: M1)
Chain Length:128
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:A8E526 Pfam ID:PF01929
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L15
Gene (Uniprot):rpl15
Chain IDs:CA (auth: N1)
Chain Length:25
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6DHS3 Pfam ID:PF00827
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S13
Gene (Uniprot):rps13
Chain IDs:DA (auth: N2)
Chain Length:151
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6IMW6 Pfam ID:PF08069, PF00312
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13a
Gene (Uniprot):rpl13a
Chain IDs:EA (auth: O1)
Chain Length:205
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q1LYB7 Pfam ID:PF00572
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S14
Gene (Uniprot):rps14
Chain IDs:FA (auth: O2)
Chain Length:151
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6PBW3 Pfam ID:PF00411
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L17
Gene (Uniprot):rpl17
Chain IDs:GA (auth: P1)
Chain Length:92
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7T1K0 Pfam ID:PF00237
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S15
Gene (Uniprot):rps15
Chain IDs:HA (auth: P2)
Chain Length:145
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6Q421 Pfam ID:PF00203
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L18
Gene (Uniprot):rpl18
Chain IDs:IA (auth: Q1)
Chain Length:182
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6DGL0 Pfam ID:PF17135
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S16
Gene (Uniprot):rps16
Chain IDs:JA (auth: Q2)
Chain Length:146
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q1LWH1 Pfam ID:PF00380
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L19
Gene (Uniprot):rpl19
Chain IDs:KA (auth: R1)
Chain Length:138
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6P5L3 Pfam ID:PF01280
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S17
Gene (Uniprot):zgc:114188
Chain IDs:LA (auth: R2)
Chain Length:134
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q5BJA1 Pfam ID:PF00833
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L18a
Gene (Uniprot):rpl18a
Chain IDs:MA (auth: S1)
Chain Length:176
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7ZWJ4 Pfam ID:PF01775
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S18
Gene (Uniprot):rps18
Chain IDs:NA (auth: S2)
Chain Length:152
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q8JGS9 Pfam ID:PF00416
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L21
Gene (Uniprot):rpl21
Chain IDs:OA (auth: T1)
Chain Length:160
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6IQQ0 Pfam ID:PF01157
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S19
Gene (Uniprot):rps19
Chain IDs:PA (auth: T2)
Chain Length:146
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:A0A0R4IJ49 Pfam ID:PF01090
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L22
Gene (Uniprot):rpl22
Chain IDs:QA (auth: U1)
Chain Length:141
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:F1QG80 Pfam ID:PF01776
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S20
Gene (Uniprot):rps20
Chain IDs:RA (auth: U2)
Chain Length:119
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6P6E7 Pfam ID:PF00338
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L23
Gene (Uniprot):rpl23
Chain IDs:SA (auth: V1)
Chain Length:140
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6PC14 Pfam ID:PF00238
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S21
Gene (Uniprot):rps21
Chain IDs:TA (auth: V2)
Chain Length:81
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7ZUG5 Pfam ID:PF01249
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L24
Gene (Uniprot):rpl24
Chain IDs:UA (auth: W1)
Chain Length:157
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:A0A0R4IMS3 Pfam ID:PF01246
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S15a
Gene (Uniprot):rps15a
Chain IDs:VA (auth: W2)
Chain Length:130
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6Q420 Pfam ID:PF00410
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L23a
Gene (Uniprot):rpl23a
Chain IDs:WA (auth: X1)
Chain Length:155
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:F1QGI3 Pfam ID:PF03939, PF00276
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S23
Gene (Uniprot):rps23
Chain IDs:XA (auth: X2)
Chain Length:143
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:A8KB78 Pfam ID:PF00164
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ATPase H+ transporting V0 subunit e1
Gene (Uniprot):rpl26
Chain IDs:YA (auth: Y1)
Chain Length:145
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7SXA1 Pfam ID:PF16906, PF00467
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S24
Gene (Uniprot):rps24
Chain IDs:ZA (auth: Y2)
Chain Length:132
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:B7ZD34 Pfam ID:PF01282
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27
Gene (Uniprot):rpl27
Chain IDs:AB (auth: Z1)
Chain Length:136
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7ZV82 Pfam ID:PF00467, PF01777
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S25
Gene (Uniprot):rps25
Chain IDs:BB (auth: Z2)
Chain Length:124
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6PBI5 Pfam ID:PF03297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27a
Gene (Uniprot):rpl27a
Chain IDs:CB (auth: a1)
Chain Length:257
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6P2M0 Pfam ID:PF00828
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S26
Gene (Uniprot):rps26
Chain IDs:DB (auth: a2)
Chain Length:115
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6P6E2 Pfam ID:PF01283
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Gene (Uniprot):rpl29
Chain IDs:EB (auth: b1)
Chain Length:403
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6DGL4 Pfam ID:PF01779
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S27
Gene (Uniprot):rps27.1
Chain IDs:FB (auth: b2)
Chain Length:84
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q4VBV2 Pfam ID:PF01667
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L30
Gene (Uniprot):rpl30
Chain IDs:GB (auth: c1)
Chain Length:375
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7ZUG6 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S28
Gene (Uniprot):rps28
Chain IDs:HB (auth: c2)
Chain Length:69
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6PBK3 Pfam ID:PF01200
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L31
Gene (Uniprot):rpl31
Chain IDs:IB (auth: d1)
Chain Length:123
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q24JV3 Pfam ID:PF01198
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S29
Gene (Uniprot):rps29
Chain IDs:JB (auth: d2)
Chain Length:245
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6Q419 Pfam ID:PF00253
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L32
Gene (Uniprot):rpl32
Chain IDs:KB (auth: e1)
Chain Length:135
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q24JV1 Pfam ID:PF01655
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S30
Gene (Uniprot):faua
Chain IDs:LB (auth: e2)
Chain Length:133
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6PC01 Pfam ID:PF00240, PF04758
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35a
Gene (Uniprot):rpl35a
Chain IDs:MB (auth: f1)
Chain Length:110
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6DGM0 Pfam ID:PF01247
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L34
Gene (Uniprot):rpl34
Chain IDs:NB (auth: g1)
Chain Length:117
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q7ZWJ7 Pfam ID:PF01199
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Guanine nucleotide-binding protein subunit beta-2-like 1
Gene (Uniprot):gnb2l1
Chain IDs:OB (auth: g2)
Chain Length:249
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:O42248 Pfam ID:PF00400
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35
Gene (Uniprot):rpl35
Chain IDs:PB (auth: h1)
Chain Length:123
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q8JHJ1 Pfam ID:PF00831
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36
Gene (Uniprot):rpl36
Chain IDs:QB (auth: i1)
Chain Length:215
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6Q415 Pfam ID:PF01158
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37
Gene (Uniprot):rpl37
Chain IDs:RB (auth: j1)
Chain Length:97
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6IQJ7 Pfam ID:PF01907
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L38
Gene (Uniprot):rpl38
Chain IDs:SB (auth: k1)
Chain Length:70
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6DGL9 Pfam ID:PF01781
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L39
Gene (Uniprot):rpl39
Chain IDs:TB (auth: l1)
Chain Length:50
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q6IMW8 Pfam ID:PF00832
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L40
Gene (Uniprot):uba52
Chain IDs:UB (auth: m1)
Chain Length:128
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:Q3B7P7 Pfam ID:PF00240, PF01020
Polymer Type:polypeptide(L)
Molecule:Rpl41
Chain IDs:VB (auth: n1)
Chain Length:25
Number of Molecules:1
Biological Source:Danio rerio
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36a
Gene (Uniprot):rpl36a
Chain IDs:WB (auth: o1)
Chain Length:205
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:P61485 Pfam ID:PF00935
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Zgc:171772
Gene (Uniprot):zgc:171772
Chain IDs:XB (auth: p1)
Chain Length:92
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:A7YY10 Pfam ID:PF01780
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L28
Gene (Uniprot):rpl28
Chain IDs:YB (auth: r1)
Chain Length:138
Number of Molecules:1
Biological Source:Danio rerio
UniProt ID:A0A286YBP4 Pfam ID:PF01778
Primary Citation
A molecular network of conserved factors keeps ribosomes dormant in the egg.
Nature 613 712 720 (2023)
PMID: 36653451 DOI: 10.1038/s41586-022-05623-y

Abstact

Ribosomes are produced in large quantities during oogenesis and are stored in the egg. However, the egg and early embryo are translationally repressed1-4. Here, using mass spectrometry and cryo-electron microscopy analyses of ribosomes isolated from zebrafish (Danio rerio) and Xenopus laevis eggs and embryos, we provide molecular evidence that ribosomes transition from a dormant state to an active state during the first hours of embryogenesis. Dormant ribosomes are associated with four conserved factors that form two modules, consisting of Habp4-eEF2 and death associated protein 1b (Dap1b) or Dap in complex with eIF5a. Both modules occupy functionally important sites and act together to stabilize ribosomes and repress translation. Dap1b (also known as Dapl1 in mammals) is a newly discovered translational inhibitor that stably inserts into the polypeptide exit tunnel. Addition of recombinant zebrafish Dap1b protein is sufficient to block translation and reconstitute the dormant egg ribosome state in a mammalian translation extract in vitro. Thus, a developmentally programmed, conserved ribosome state has a key role in ribosome storage and translational repression in the egg.

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Protein

Chemical

Disease

Primary Citation of related structures
7OYB