7OYC image
Deposition Date 2021-06-24
Release Date 2022-07-20
Last Version Date 2024-11-06
Entry Detail
PDB ID:
7OYC
Keywords:
RIBOSOME
Title:
Cryo-EM structure of the Xenopus egg 80S ribosome
Biological Source:
Source Organism:
Xenopus laevis (Taxon ID: 8355)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
2.40 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
7OYC validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Eukaryotic translation initiation factor 5A
Gene (Uniprot):eif5a.L
Chain IDs:A (auth: 11)
Chain Length:154
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7ZXG3 Pfam ID:PF21485, PF01287
Polymer Type:polyribonucleotide
Molecule:18S rRNA
Chain IDs:B (auth: 22)
Chain Length:1826
Number of Molecules:1
Biological Source:Xenopus laevis
Polymer Type:polyribonucleotide
Molecule:28S rRNA
Chain IDs:C (auth: 51)
Chain Length:4115
Number of Molecules:1
Biological Source:Xenopus laevis
Polymer Type:polyribonucleotide
Molecule:5S rRNA
Chain IDs:D (auth: 71)
Chain Length:120
Number of Molecules:1
Biological Source:Xenopus laevis
Polymer Type:polyribonucleotide
Molecule:5.8S rRNA
Chain IDs:E (auth: 81)
Chain Length:156
Number of Molecules:1
Biological Source:Xenopus laevis
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L8
Chain IDs:F (auth: A1)
Chain Length:148
Number of Molecules:1
Biological Source:Xenopus laevis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein SA
Gene (Uniprot):rpsa.S
Chain IDs:G (auth: A2)
Chain Length:306
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7ZX07 Pfam ID:PF00318, PF16122
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Rpl3-prov protein
Gene (Uniprot):rpl3.L
Chain IDs:H (auth: B1)
Chain Length:403
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7ZYR1 Pfam ID:PF00297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S3a-A
Gene (Uniprot):rps3a-a
Chain IDs:I (auth: B2)
Chain Length:264
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q801S3 Pfam ID:PF01015
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L4-B
Gene (Uniprot):rpl4-b
Chain IDs:J (auth: C1)
Chain Length:116
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:P02385 Pfam ID:PF00573, PF14374
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S2
Gene (Uniprot):rps2.L
Chain IDs:K (auth: C2)
Chain Length:281
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7T0R9 Pfam ID:PF00333, PF03719
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Rpl5-b protein
Gene (Uniprot):rpl5.L
Chain IDs:L (auth: D1)
Chain Length:125
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q8AVI7 Pfam ID:PF17144, PF14204
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DNA-(apurinic or apyrimidinic site) lyase
Gene (Uniprot):rpls3-b
Chain IDs:M (auth: D2)
Chain Length:246
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7ZYT3 Pfam ID:PF07650, PF00189
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6
Gene (Uniprot):rpl6.S
Chain IDs:N (auth: E1)
Chain Length:135
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6DJF7 Pfam ID:PF03868, PF01159
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S4
Gene (Uniprot):rps4
Chain IDs:O (auth: E2)
Chain Length:263
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:P49401 Pfam ID:PF08071, PF00900, PF00467, PF16121
Protein Blast
Polymer Type:polypeptide(L)
Molecule:MGC130910 protein
Gene (Uniprot):rpl7.L
Chain IDs:P (auth: F1)
Chain Length:246
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q3B8I3 Pfam ID:PF08079, PF00327
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_S7 domain-containing protein
Gene (Uniprot):rps5.L
Chain IDs:Q (auth: F2)
Chain Length:203
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8F8E2 Pfam ID:PF00177
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L7a
Gene (Uniprot):rpl7a.S
Chain IDs:R (auth: G1)
Chain Length:117
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6GQB2 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S6
Gene (Uniprot):rps6.L
Chain IDs:S (auth: G2)
Chain Length:249
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7ZYU0 Pfam ID:PF01092
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L9
Chain IDs:T (auth: H1)
Chain Length:123
Number of Molecules:1
Biological Source:Xenopus laevis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S7
Gene (Uniprot):rps7
Chain IDs:U (auth: H2)
Chain Length:194
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:P02362 Pfam ID:PF01251
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L16 domain-containing protein
Gene (Uniprot):rpl10.L
Chain IDs:V (auth: I1)
Chain Length:215
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8F5F1 Pfam ID:PF00252
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S8
Gene (Uniprot):rps8.L
Chain IDs:W (auth: I2)
Chain Length:208
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6DJI0 Pfam ID:PF01201
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L11
Chain IDs:X (auth: J1)
Chain Length:97
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0AA97PZC8
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S9
Gene (Uniprot):rps9
Chain IDs:Y (auth: J2)
Chain Length:194
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7ZYU4 Pfam ID:PF00163, PF01479
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S10
Gene (Uniprot):rps10
Chain IDs:Z (auth: K2)
Chain Length:165
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q07254 Pfam ID:PF03501
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13
Gene (Uniprot):rpl13.S
Chain IDs:AA (auth: L1)
Chain Length:51
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6DJN5 Pfam ID:PF01294
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S11
Gene (Uniprot):rps11.L
Chain IDs:BA (auth: L2)
Chain Length:158
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7SZ77 Pfam ID:PF16205, PF00366
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L14
Gene (Uniprot):LOC121394610
Chain IDs:CA (auth: M1)
Chain Length:128
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8FWH1 Pfam ID:PF01929
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L15
Gene (Uniprot):rpl15.S
Chain IDs:DA (auth: N1)
Chain Length:25
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8FRG2 Pfam ID:PF00827
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S13
Gene (Uniprot):rps13
Chain IDs:EA (auth: N2)
Chain Length:151
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:P49393 Pfam ID:PF08069, PF00312
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13a
Gene (Uniprot):rpl13a.S
Chain IDs:FA (auth: O1)
Chain Length:231
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8ENM5 Pfam ID:PF00572
Polymer Type:polypeptide(L)
Molecule:Rps14
Chain IDs:GA (auth: O2)
Chain Length:151
Number of Molecules:1
Biological Source:Xenopus laevis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L17
Gene (Uniprot):rpl17.L
Chain IDs:HA (auth: P1)
Chain Length:184
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8I3J8 Pfam ID:PF00237
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S15
Gene (Uniprot):rps15
Chain IDs:IA (auth: P2)
Chain Length:145
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:P20342 Pfam ID:PF00203
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L18e/L15P domain-containing protein
Chain IDs:JA (auth: Q1)
Chain Length:188
Number of Molecules:1
Biological Source:Xenopus laevis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Rps16 protein
Gene (Uniprot):rps16
Chain IDs:KA (auth: Q2)
Chain Length:146
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q3KQC9 Pfam ID:PF00380
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L19
Gene (Uniprot):rpl19
Chain IDs:LA (auth: R1)
Chain Length:137
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7ZYS1 Pfam ID:PF01280
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S17
Gene (Uniprot):rps17.L
Chain IDs:MA (auth: R2)
Chain Length:135
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6GNF4 Pfam ID:PF00833
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L18a
Gene (Uniprot):rpl18a.S
Chain IDs:NA (auth: S1)
Chain Length:113
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7SZB7 Pfam ID:PF01775
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S18
Gene (Uniprot):rps18.L
Chain IDs:OA (auth: S2)
Chain Length:152
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6NTT2 Pfam ID:PF00416
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L21
Gene (Uniprot):MGC80700
Chain IDs:PA (auth: T1)
Chain Length:160
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6GP41 Pfam ID:PF01157
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S19
Gene (Uniprot):rps19.S
Chain IDs:QA (auth: T2)
Chain Length:146
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A310TRG4 Pfam ID:PF01090
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L22
Gene (Uniprot):rpl22
Chain IDs:RA (auth: U1)
Chain Length:128
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:P50886 Pfam ID:PF01776
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S20
Gene (Uniprot):rps20
Chain IDs:SA (auth: U2)
Chain Length:119
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:P23403 Pfam ID:PF00338
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L23
Gene (Uniprot):rpl23.S
Chain IDs:TA (auth: V1)
Chain Length:140
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6GNH1 Pfam ID:PF00238
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S21
Gene (Uniprot):rps21
Chain IDs:UA (auth: V2)
Chain Length:83
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6AZJ9 Pfam ID:PF01249
Protein Blast
Polymer Type:polypeptide(L)
Molecule:TRASH domain-containing protein
Gene (Uniprot):rpl24.L
Chain IDs:VA (auth: W1)
Chain Length:155
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8HGE0 Pfam ID:PF01246
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S15a
Gene (Uniprot):rps15a.S
Chain IDs:WA (auth: W2)
Chain Length:130
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q4QR44 Pfam ID:PF00410
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L23eN domain-containing protein
Gene (Uniprot):rpl23a.L
Chain IDs:XA (auth: X1)
Chain Length:155
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8H4S4 Pfam ID:PF03939, PF00276
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S23
Gene (Uniprot):rps23.S
Chain IDs:YA (auth: X2)
Chain Length:143
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6AZL9 Pfam ID:PF00164
Polymer Type:polypeptide(L)
Molecule:KOW domain-containing protein
Chain IDs:ZA (auth: Y1)
Chain Length:145
Number of Molecules:1
Biological Source:Xenopus laevis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S24
Gene (Uniprot):rps24
Chain IDs:AB (auth: Y2)
Chain Length:132
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:P02377 Pfam ID:PF01282
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27
Gene (Uniprot):rpl27.S
Chain IDs:BB (auth: Z1)
Chain Length:136
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6PHL5 Pfam ID:PF00467, PF01777
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S25
Gene (Uniprot):rps25.S
Chain IDs:CB (auth: Z2)
Chain Length:125
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6DJJ1 Pfam ID:PF03297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27a
Gene (Uniprot):rpl27a.L
Chain IDs:DB (auth: a1)
Chain Length:148
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7SZB2 Pfam ID:PF00828
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S26
Gene (Uniprot):rps26.L
Chain IDs:EB (auth: a2)
Chain Length:306
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6AZL7 Pfam ID:PF01283
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Gene (Uniprot):rpl29.S
Chain IDs:FB (auth: b1)
Chain Length:403
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q66KW1 Pfam ID:PF01779
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S27
Gene (Uniprot):rps27.L
Chain IDs:GB (auth: b2)
Chain Length:264
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8EJM5 Pfam ID:PF01667
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L30
Gene (Uniprot):rpl30.S
Chain IDs:HB (auth: c1)
Chain Length:116
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7SZC0 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S28
Gene (Uniprot):rps28.S
Chain IDs:IB (auth: c2)
Chain Length:281
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q66KP7 Pfam ID:PF01200
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L31
Gene (Uniprot):rpl31
Chain IDs:JB (auth: d1)
Chain Length:125
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6NUH0 Pfam ID:PF01198
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S29
Chain IDs:KB (auth: d2)
Chain Length:246
Number of Molecules:1
Biological Source:Xenopus laevis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Rpl32
Gene (Uniprot):rpl32.S
Chain IDs:LB (auth: e1)
Chain Length:135
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8GHL2 Pfam ID:PF01655
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S30
Gene (Uniprot):fau.L
Chain IDs:MB (auth: e2)
Chain Length:263
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q4KLF0 Pfam ID:PF00240, PF04758
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35a
Gene (Uniprot):rpl35a
Chain IDs:NB (auth: f1)
Chain Length:246
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:P02434 Pfam ID:PF01247
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L34
Gene (Uniprot):rpl34.L
Chain IDs:OB (auth: g1)
Chain Length:117
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8HUR4 Pfam ID:PF01199
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Gnb2l1-prov protein
Gene (Uniprot):rack1.L
Chain IDs:PB (auth: g2)
Chain Length:249
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q8AVP6 Pfam ID:PF00400
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35
Gene (Uniprot):rpl35.L
Chain IDs:QB (auth: h1)
Chain Length:123
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q4FZQ7 Pfam ID:PF00831
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36
Gene (Uniprot):rpl36
Chain IDs:RB (auth: i1)
Chain Length:215
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q66KU4 Pfam ID:PF01158
Polymer Type:polypeptide(L)
Molecule:HABP4_PAI-RBP1 domain-containing protein
Chain IDs:SB (auth: i2)
Chain Length:208
Number of Molecules:1
Biological Source:Xenopus laevis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37
Gene (Uniprot):rpl37.L
Chain IDs:TB (auth: j1)
Chain Length:97
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8I2F1 Pfam ID:PF01907
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L38
Gene (Uniprot):rpl38.L
Chain IDs:UB (auth: k1)
Chain Length:70
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q66KV2 Pfam ID:PF01781
Protein Blast
Polymer Type:polypeptide(L)
Molecule:MGC116452 protein
Gene (Uniprot):rpl39.S
Chain IDs:VB (auth: l1)
Chain Length:51
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q4FZP7 Pfam ID:PF00832
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L40
Gene (Uniprot):uba52.L
Chain IDs:WB (auth: m1)
Chain Length:128
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q6GQF3 Pfam ID:PF00240, PF01020
Polymer Type:polypeptide(L)
Molecule:Rpl41
Chain IDs:XB (auth: n1)
Chain Length:25
Number of Molecules:1
Biological Source:Xenopus laevis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:MGC85428 protein
Gene (Uniprot):rpl36a.L
Chain IDs:YB (auth: o1)
Chain Length:231
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q66KU5 Pfam ID:PF00935
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Rpl37a
Gene (Uniprot):rpl37a.L
Chain IDs:ZB (auth: p1)
Chain Length:184
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A0A1L8H102 Pfam ID:PF01780
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L28
Gene (Uniprot):rpl28.S
Chain IDs:AC (auth: r1)
Chain Length:137
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q66KV6 Pfam ID:PF01778
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Death-associated protein-like 1-B
Gene (Uniprot):dapl1.S
Chain IDs:BC (auth: s1)
Chain Length:113
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:A3KMU5 Pfam ID:PF15228
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Eef2-prov protein
Gene (Uniprot):eef2.1.L
Chain IDs:CC (auth: v2)
Chain Length:83
Number of Molecules:1
Biological Source:Xenopus laevis
UniProt ID:Q7ZXP8 Pfam ID:PF00009, PF03144, PF14492, PF03764, PF00679
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
5CT A LYS modified residue
Ligand Molecules
MG
ZN
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.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
7OYC