6SNT image
Deposition Date 2019-08-27
Release Date 2020-03-04
Last Version Date 2025-07-09
Entry Detail
PDB ID:
6SNT
Keywords:
TRANSLATION
Title:
Yeast 80S ribosome stalled on SDD1 mRNA.
Biological Source:
Source Organism:
Saccharomyces cerevisiae (Taxon ID: 4932)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
2.80 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
6SNT validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:Saccharomyces cerevisiae S288C 25S ribosomal RNA (RDN25-1), rRNA
Chain IDs:ZB (auth: 1)
Chain Length:3396
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Polymer Type:polyribonucleotide
Molecule:Saccharomyces cerevisiae S288C 18S ribosomal RNA (RDN18-1), rRNA
Chain IDs:A (auth: 2)
Chain Length:1800
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Polymer Type:polyribonucleotide
Molecule:5.8S rRNA
Chain IDs:JA (auth: 3)
Chain Length:158
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Polymer Type:polyribonucleotide
Molecule:5S rRNA
Chain IDs:IA (auth: 4)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Polymer Type:polyribonucleotide
Molecule:mRNA
Chain IDs:AC (auth: 5)
Chain Length:21
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Polymer Type:polyribonucleotide
Molecule:tRNA
Chain IDs:CC (auth: 6)
Chain Length:76
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S0-A
Gene (Uniprot):RPS0A
Chain IDs:B (auth: A)
Chain Length:252
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P32905 Pfam ID:PF00318
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L23-A
Gene (Uniprot):RPL23A
Chain IDs:EB (auth: AB)
Chain Length:106
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX41 Pfam ID:PF00238
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S1-A
Gene (Uniprot):RPS1A
Chain IDs:C (auth: B)
Chain Length:82
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P33442 Pfam ID:PF01015
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S2
Gene (Uniprot):RPS2
Chain IDs:E (auth: C)
Chain Length:254
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P25443 Pfam ID:PF00333, PF03719
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S3
Gene (Uniprot):RPS3
Chain IDs:F (auth: D)
Chain Length:240
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05750 Pfam ID:PF07650, PF00189
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S4-A
Gene (Uniprot):RPS4A
Chain IDs:G (auth: E)
Chain Length:261
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX35 Pfam ID:PF08071, PF01479, PF00900, PF00467, PF16121
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S5
Gene (Uniprot):RPS5
Chain IDs:H (auth: F)
Chain Length:225
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P26783 Pfam ID:PF00177
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S6-A
Gene (Uniprot):RPS6A
Chain IDs:I (auth: G)
Chain Length:236
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX37 Pfam ID:PF01092
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S7-A
Gene (Uniprot):RPS7A
Chain IDs:J (auth: H)
Chain Length:190
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P26786 Pfam ID:PF01251
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S8-A
Gene (Uniprot):RPS8A
Chain IDs:K (auth: I)
Chain Length:200
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX39 Pfam ID:PF01201
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S9-A
Gene (Uniprot):RPS9A
Chain IDs:L (auth: J)
Chain Length:362
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:O13516 Pfam ID:PF00163, PF01479
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S10-A
Gene (Uniprot):RPS10A
Chain IDs:M (auth: K)
Chain Length:105
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:Q08745 Pfam ID:PF03501
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S11-A
Gene (Uniprot):RPS11A
Chain IDs:N (auth: L)
Chain Length:167
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX47 Pfam ID:PF16205, PF00366
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S12
Gene (Uniprot):RPS12
Chain IDs:O (auth: M)
Chain Length:244
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P48589 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S13
Gene (Uniprot):RPS13
Chain IDs:P (auth: N)
Chain Length:151
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05756 Pfam ID:PF08069, PF00312
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein YEL057C
Gene (Uniprot):SDD1
Chain IDs:BC (auth: NC)
Chain Length:233
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P39983
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S14-A
Gene (Uniprot):RPS14A
Chain IDs:Q (auth: O)
Chain Length:191
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P06367 Pfam ID:PF00411
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S15
Gene (Uniprot):RPS15
Chain IDs:D (auth: P)
Chain Length:221
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:Q01855 Pfam ID:PF00203
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S16-A
Gene (Uniprot):RPS16A
Chain IDs:R (auth: Q)
Chain Length:174
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX51 Pfam ID:PF00380
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S17-B
Gene (Uniprot):RPS17B
Chain IDs:S (auth: R)
Chain Length:136
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P14127 Pfam ID:PF00833
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S18-A
Gene (Uniprot):RPS18A
Chain IDs:T (auth: S)
Chain Length:138
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX55 Pfam ID:PF00416
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S19-A
Gene (Uniprot):RPS19A
Chain IDs:U (auth: T)
Chain Length:204
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P07280 Pfam ID:PF01090
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S20
Gene (Uniprot):RPS20
Chain IDs:V (auth: U)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P38701 Pfam ID:PF00338
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S21-A
Gene (Uniprot):RPS21A
Chain IDs:W (auth: V)
Chain Length:87
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0C0V8 Pfam ID:PF01249
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S22-A
Gene (Uniprot):RPS22A
Chain IDs:X (auth: W)
Chain Length:186
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0C0W1 Pfam ID:PF00410
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S23-A
Gene (Uniprot):RPS23A
Chain IDs:Y (auth: X)
Chain Length:189
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX29 Pfam ID:PF00164
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S24-A
Gene (Uniprot):RPS24A
Chain IDs:Z (auth: Y)
Chain Length:135
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX31 Pfam ID:PF01282
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S25-A
Gene (Uniprot):RPS25A
Chain IDs:AA (auth: Z)
Chain Length:160
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:Q3E792 Pfam ID:PF03297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S26-A
Gene (Uniprot):RPS26A
Chain IDs:BA (auth: a)
Chain Length:252
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P39938 Pfam ID:PF01283
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L43-A
Gene (Uniprot):RPL43A
Chain IDs:YB (auth: aa)
Chain Length:92
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX25 Pfam ID:PF01780
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L42-A
Gene (Uniprot):RPL42A
Chain IDs:XB (auth: ab)
Chain Length:106
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX27 Pfam ID:PF00935
Polymer Type:polypeptide(L)
Molecule:L41-A
Chain IDs:WB (auth: ac)
Chain Length:25
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ubiquitin-60S ribosomal protein L40
Gene (Uniprot):RPL40A
Chain IDs:VB (auth: ad)
Chain Length:128
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CH08 Pfam ID:PF00240, PF01020
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L39
Gene (Uniprot):RPL39
Chain IDs:UB (auth: ae)
Chain Length:51
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P04650 Pfam ID:PF00832
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L38
Gene (Uniprot):RPL38
Chain IDs:TB (auth: af)
Chain Length:78
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P49167 Pfam ID:PF01781
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L37-A
Gene (Uniprot):RPL37A
Chain IDs:SB (auth: ag)
Chain Length:88
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P49166 Pfam ID:PF01907
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36-A
Gene (Uniprot):RPL36A
Chain IDs:RB (auth: ah)
Chain Length:100
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05745 Pfam ID:PF01158
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35-A
Gene (Uniprot):RPL35A
Chain IDs:QB (auth: ai)
Chain Length:120
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX84 Pfam ID:PF00831
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L34-A
Gene (Uniprot):RPL34A
Chain IDs:PB (auth: aj)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P87262 Pfam ID:PF01199
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L33-A
Gene (Uniprot):RPL33A
Chain IDs:OB (auth: ak)
Chain Length:107
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05744 Pfam ID:PF01247
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L32
Gene (Uniprot):RPL32
Chain IDs:NB (auth: al)
Chain Length:130
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P38061 Pfam ID:PF01655
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L31-A
Gene (Uniprot):RPL31A
Chain IDs:MB (auth: am)
Chain Length:113
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0C2H8 Pfam ID:PF01198
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L30
Gene (Uniprot):RPL30
Chain IDs:LB (auth: an)
Chain Length:105
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P14120 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Gene (Uniprot):RPL29
Chain IDs:KB (auth: ao)
Chain Length:59
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05747 Pfam ID:PF01779
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L28
Gene (Uniprot):RPL28
Chain IDs:JB (auth: ap)
Chain Length:149
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P02406 Pfam ID:PF00828
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27-A
Gene (Uniprot):RPL27A
Chain IDs:IB (auth: aq)
Chain Length:136
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0C2H6 Pfam ID:PF01777
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L26-A
Gene (Uniprot):RPL26A
Chain IDs:HB (auth: ar)
Chain Length:127
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05743 Pfam ID:PF16906, PF00467
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L25
Gene (Uniprot):RPL25
Chain IDs:GB (auth: as)
Chain Length:142
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P04456 Pfam ID:PF03939, PF00276
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L24-A
Gene (Uniprot):RPL24A
Chain IDs:FB (auth: at)
Chain Length:155
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P04449 Pfam ID:PF01246
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L22-A
Gene (Uniprot):RPL22A
Chain IDs:DB (auth: au)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05749 Pfam ID:PF01776
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S27-A
Gene (Uniprot):RPS27A
Chain IDs:CA (auth: b)
Chain Length:82
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P35997 Pfam ID:PF01667
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S28-B
Gene (Uniprot):RPS28B
Chain IDs:HA (auth: c)
Chain Length:254
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0C0X0 Pfam ID:PF01200
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S29-A
Gene (Uniprot):RPS29A
Chain IDs:DA (auth: d)
Chain Length:240
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P41057 Pfam ID:PF00253
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S30-A
Gene (Uniprot):RPS30A
Chain IDs:EA (auth: e)
Chain Length:261
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX33 Pfam ID:PF04758
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ubiquitin-40S ribosomal protein S31
Gene (Uniprot):RPS31
Chain IDs:FA (auth: f)
Chain Length:225
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05759 Pfam ID:PF00240, PF01599
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Guanine nucleotide-binding protein subunit beta-like protein
Gene (Uniprot):ASC1
Chain IDs:GA (auth: g)
Chain Length:236
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P38011 Pfam ID:PF00400
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L2-A
Gene (Uniprot):RPL2A
Chain IDs:KA (auth: h)
Chain Length:190
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX45 Pfam ID:PF00181, PF03947
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L3
Gene (Uniprot):RPL3
Chain IDs:LA (auth: i)
Chain Length:200
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P14126 Pfam ID:PF00297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L4-A
Gene (Uniprot):RPL4A
Chain IDs:MA (auth: j)
Chain Length:362
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P10664 Pfam ID:PF00573, PF14374
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L5
Gene (Uniprot):RPL5
Chain IDs:NA (auth: k)
Chain Length:105
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P26321 Pfam ID:PF17144, PF14204
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6-B
Gene (Uniprot):RPL6B
Chain IDs:OA (auth: l)
Chain Length:167
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05739 Pfam ID:PF01159
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L7-A
Gene (Uniprot):RPL7A
Chain IDs:PA (auth: m)
Chain Length:244
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05737 Pfam ID:PF08079, PF00327
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L8-A
Gene (Uniprot):RPL8A
Chain IDs:QA (auth: n)
Chain Length:151
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P17076 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L9-A
Gene (Uniprot):RPL9A
Chain IDs:RA (auth: o)
Chain Length:191
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05738 Pfam ID:PF00347
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L10
Gene (Uniprot):RPL10
Chain IDs:SA (auth: p)
Chain Length:221
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P41805 Pfam ID:PF00252
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L11-A
Gene (Uniprot):RPL11A
Chain IDs:TA (auth: q)
Chain Length:174
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0C0W9 Pfam ID:PF00281, PF00673
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13-A
Gene (Uniprot):RPL13A
Chain IDs:UA (auth: r)
Chain Length:136
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:Q12690 Pfam ID:PF01294
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L14-A
Gene (Uniprot):RPL14A
Chain IDs:VA (auth: s)
Chain Length:138
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P36105 Pfam ID:PF00467, PF01929
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L15-A
Gene (Uniprot):RPL15A
Chain IDs:WA (auth: t)
Chain Length:204
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05748 Pfam ID:PF00827
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L16-A
Gene (Uniprot):RPL16A
Chain IDs:XA (auth: u)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P26784 Pfam ID:PF00572
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L17-A
Gene (Uniprot):RPL17A
Chain IDs:YA (auth: v)
Chain Length:87
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P05740 Pfam ID:PF00237
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L18-A
Gene (Uniprot):RPL18A
Chain IDs:ZA (auth: w)
Chain Length:186
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX49 Pfam ID:PF17135
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L19-A
Gene (Uniprot):RPL19A
Chain IDs:AB (auth: x)
Chain Length:189
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX82 Pfam ID:PF01280
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L20-A
Gene (Uniprot):RPL20A
Chain IDs:BB (auth: y)
Chain Length:135
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:P0CX23 Pfam ID:PF01775
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L21-A
Gene (Uniprot):RPL21A
Chain IDs:CB (auth: z)
Chain Length:160
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
UniProt ID:Q02753 Pfam ID:PF01157
Ligand Molecules
MG
ZN
Primary Citation
RQT complex dissociates ribosomes collided on endogenous RQC substrate SDD1.
Nat.Struct.Mol.Biol. 27 323 332 (2020)
PMID: 32203490 DOI: 10.1038/s41594-020-0393-9

Abstact

Ribosome-associated quality control (RQC) represents a rescue pathway in eukaryotic cells that is triggered upon translational stalling. Collided ribosomes are recognized for subsequent dissociation followed by degradation of nascent peptides. However, endogenous RQC-inducing sequences and the mechanism underlying the ubiquitin-dependent ribosome dissociation remain poorly understood. Here, we identified SDD1 messenger RNA from Saccharomyces cerevisiae as an endogenous RQC substrate and reveal the mechanism of its mRNA-dependent and nascent peptide-dependent translational stalling. In vitro translation of SDD1 mRNA enabled the reconstitution of Hel2-dependent polyubiquitination of collided disomes and, preferentially, trisomes. The distinct trisome architecture, visualized using cryo-EM, provides the structural basis for the more-efficient recognition by Hel2 compared with that of disomes. Subsequently, the Slh1 helicase subunit of the RQC trigger (RQT) complex preferentially dissociates the first stalled polyubiquitinated ribosome in an ATP-dependent manner. Together, these findings provide fundamental mechanistic insights into RQC and its physiological role in maintaining cellular protein homeostasis.

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Protein

Chemical

Disease

Primary Citation of related structures
6SNT