ISDA: 9R9P

Deposition Date 2025-05-20

Release Date 2025-12-24

Last Version Date 2026-01-28

Entry Detail

PDB ID:

9R9P

Keywords:

RIBOSOME

Title:

Yeast 80S with nascent chain in complex with Ssb1-ADP in the S2 state

Biological Source:

Source Organism(s):

Saccharomyces cerevisiae (Taxon ID: 4932)

Expression System(s):

Escherichia coli

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

3.00 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

Download Validation Report

Macromolecular Entities

Polymer Type:polyribonucleotide
Molecule:mRNA_Flag-Pgk-1-70
Chain IDs:A (auth: 5)
Chain Length:234
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

Polymer Type:polyribonucleotide
Molecule:tRNA Methionin elongator
Chain IDs:B (auth: 6)
Chain Length:76
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Ribosome-associated molecular chaperone SSB1
Gene (Uniprot):SSB1
Chain IDs:C (auth: A)
Chain Length:613
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P11484 Pfam ID:PF00012

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Phosphoglycerate kinase
Gene (Uniprot):PGK1
Chain IDs:D (auth: B)
Chain Length:78
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P00560 EC:2.7.2.3

Polymer Type:polyribonucleotide
Molecule:25S ribosomal RNA
Chain IDs:E (auth: C1)
Chain Length:3396
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

Polymer Type:polyribonucleotide
Molecule:RNA (1642-MER)
Chain IDs:F (auth: C2)
Chain Length:1800
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

Polymer Type:polyribonucleotide
Molecule:5.8S ribosomal RNA
Chain IDs:G (auth: C3)
Chain Length:158
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

Polymer Type:polyribonucleotide
Molecule:5S ribosomal RNA
Chain IDs:H (auth: C4)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L2-A
Gene (Uniprot):RPL2A
Chain IDs:I (auth: LA)
Chain Length:149
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX45 Pfam ID:PF00181, PF03947

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L3
Gene (Uniprot):RPL3
Chain IDs:J (auth: LB)
Chain Length:387
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P14126 Pfam ID:PF00297

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L4-A
Gene (Uniprot):RPL4A
Chain IDs:K (auth: LC)
Chain Length:105
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P10664 Pfam ID:PF00573, PF14374

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L5
Gene (Uniprot):RPL5
Chain IDs:L (auth: LD)
Chain Length:113
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P26321 Pfam ID:PF17144, PF14204

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6-B
Gene (Uniprot):RPL6B
Chain IDs:M (auth: LE)
Chain Length:130
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05739 Pfam ID:PF01159

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L7-A
Gene (Uniprot):RPL7A
Chain IDs:N (auth: LF)
Chain Length:244
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05737 Pfam ID:PF08079, PF00327

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L8-A
Gene (Uniprot):RPL8A
Chain IDs:O (auth: LG)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P17076 Pfam ID:PF01248

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L9-A
Gene (Uniprot):RPL9A
Chain IDs:P (auth: LH)
Chain Length:191
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05738 Pfam ID:PF00347

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L10
Gene (Uniprot):RPL10
Chain IDs:Q (auth: LI)
Chain Length:100
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P41805 Pfam ID:PF00252

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L11-A
Gene (Uniprot):RPL11A
Chain IDs:R (auth: LJ)
Chain Length:88
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0C0W9 Pfam ID:PF00281, PF00673

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13-A
Gene (Uniprot):RPL13A
Chain IDs:S (auth: LL)
Chain Length:51
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:Q12690 Pfam ID:PF01294

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L14-A
Gene (Uniprot):RPL14A
Chain IDs:T (auth: LM)
Chain Length:138
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P36105 Pfam ID:PF00467, PF01929

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L15-A
Gene (Uniprot):RPL15A
Chain IDs:U (auth: LN)
Chain Length:25
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05748 Pfam ID:PF00827

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L16-A
Gene (Uniprot):RPL16A
Chain IDs:V (auth: LO)
Chain Length:199
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P26784 Pfam ID:PF00572

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L17-A
Gene (Uniprot):RPL17A
Chain IDs:W (auth: LP)
Chain Length:92
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05740 Pfam ID:PF00237

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L18-A
Gene (Uniprot):RPL18A
Chain IDs:X (auth: LQ)
Chain Length:186
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX49 Pfam ID:PF17135

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L19-A
Gene (Uniprot):RPL19A
Chain IDs:Y (auth: LR)
Chain Length:189
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX82 Pfam ID:PF01280, PF25476

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L20-A
Gene (Uniprot):RPL20A
Chain IDs:Z (auth: LS)
Chain Length:172
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX23 Pfam ID:PF01775

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L21-A
Gene (Uniprot):RPL21A
Chain IDs:AA (auth: LT)
Chain Length:160
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:Q02753 Pfam ID:PF01157

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L22-A
Gene (Uniprot):RPL22A
Chain IDs:BA (auth: LU)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05749 Pfam ID:PF01776

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L23-A
Gene (Uniprot):RPL23A
Chain IDs:CA (auth: LV)
Chain Length:137
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX41 Pfam ID:PF00238

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Large ribosomal subunit protein eL24B
Gene (Uniprot):RPL24B
Chain IDs:DA (auth: LW)
Chain Length:155
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P24000 Pfam ID:PF01246

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L25
Gene (Uniprot):RPL25
Chain IDs:EA (auth: LX)
Chain Length:142
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P04456 Pfam ID:PF03939, PF00276

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L26-A
Gene (Uniprot):RPL26A
Chain IDs:FA (auth: LY)
Chain Length:127
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05743 Pfam ID:PF16906, PF00467

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27-A
Gene (Uniprot):RPL27A
Chain IDs:GA (auth: LZ)
Chain Length:136
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0C2H6 Pfam ID:PF01777

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L28
Gene (Uniprot):RPL28
Chain IDs:HA (auth: La)
Chain Length:149
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P02406 Pfam ID:PF00828

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Gene (Uniprot):RPL29
Chain IDs:IA (auth: Lb)
Chain Length:387
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05747 Pfam ID:PF01779

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L30
Gene (Uniprot):RPL30
Chain IDs:JA (auth: Lc)
Chain Length:105
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P14120 Pfam ID:PF01248

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L31-A
Gene (Uniprot):RPL31A
Chain IDs:KA (auth: Ld)
Chain Length:113
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0C2H8 Pfam ID:PF01198

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L32
Gene (Uniprot):RPL32
Chain IDs:LA (auth: Le)
Chain Length:130
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P38061 Pfam ID:PF01655

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L33-A
Gene (Uniprot):RPL33A
Chain IDs:MA (auth: Lf)
Chain Length:244
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05744 Pfam ID:PF01247

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L34-A
Gene (Uniprot):RPL34A
Chain IDs:NA (auth: Lg)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P87262 Pfam ID:PF01199

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35-A
Gene (Uniprot):RPL35A
Chain IDs:OA (auth: Lh)
Chain Length:191
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX84 Pfam ID:PF00831

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36-A
Gene (Uniprot):RPL36A
Chain IDs:PA (auth: Li)
Chain Length:100
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05745 Pfam ID:PF01158

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L37-A
Gene (Uniprot):RPL37A
Chain IDs:QA (auth: Lj)
Chain Length:88
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P49166 Pfam ID:PF01907

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L38
Gene (Uniprot):RPL38
Chain IDs:RA (auth: Lk)
Chain Length:78
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P49167 Pfam ID:PF01781

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L39
Gene (Uniprot):RPL39
Chain IDs:SA (auth: Ll)
Chain Length:51
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P04650 Pfam ID:PF00832

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Large ribosomal subunit protein eL41B
Gene (Uniprot):RPL41B
Chain IDs:TA (auth: Ln)
Chain Length:25
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX87 Pfam ID:PF05162

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L42-A
Gene (Uniprot):RPL42A
Chain IDs:UA (auth: Lo)
Chain Length:199
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX27 Pfam ID:PF00935

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L43-A
Gene (Uniprot):RPL43A
Chain IDs:VA (auth: Lp)
Chain Length:92
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX25 Pfam ID:PF01780

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S0-A
Gene (Uniprot):RPS0A
Chain IDs:WA (auth: SA)
Chain Length:252
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P32905 Pfam ID:PF00318

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S1-A
Gene (Uniprot):RPS1A
Chain IDs:XA (auth: SB)
Chain Length:255
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P33442 Pfam ID:PF01015

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S2
Gene (Uniprot):RPS2
Chain IDs:YA (auth: SC)
Chain Length:254
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P25443 Pfam ID:PF00333, PF03719

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Small ribosomal subunit protein uS3
Gene (Uniprot):RPS3
Chain IDs:ZA (auth: SD)
Chain Length:240
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05750 Pfam ID:PF07650, PF00189

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S4-A
Gene (Uniprot):RPS4A
Chain IDs:AB (auth: SE)
Chain Length:261
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX35 Pfam ID:PF08071, PF01479, PF00900, PF00467, PF16121

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S5
Gene (Uniprot):RPS5
Chain IDs:BB (auth: SF)
Chain Length:225
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P26783 Pfam ID:PF00177

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S6-A
Gene (Uniprot):RPS6A
Chain IDs:CB (auth: SG)
Chain Length:236
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX37 Pfam ID:PF01092

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S7-A
Gene (Uniprot):RPS7A
Chain IDs:DB (auth: SH)
Chain Length:190
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P26786 Pfam ID:PF01251

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S8-A
Gene (Uniprot):RPS8A
Chain IDs:EB (auth: SI)
Chain Length:200
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX39 Pfam ID:PF01201

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S9-A
Gene (Uniprot):RPS9A
Chain IDs:FB (auth: SJ)
Chain Length:197
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:O13516 Pfam ID:PF00163, PF01479

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S10-A
Gene (Uniprot):RPS10A
Chain IDs:GB (auth: SK)
Chain Length:105
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:Q08745 Pfam ID:PF03501

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S11-A
Gene (Uniprot):RPS11A
Chain IDs:HB (auth: SL)
Chain Length:156
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX47 Pfam ID:PF16205, PF00366

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S13
Gene (Uniprot):RPS13
Chain IDs:IB (auth: SN)
Chain Length:151
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P05756 Pfam ID:PF08069, PF00312

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S14-A
Gene (Uniprot):RPS14A
Chain IDs:JB (auth: SO)
Chain Length:137
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P06367 Pfam ID:PF00411

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S15
Gene (Uniprot):RPS15
Chain IDs:KB (auth: SP)
Chain Length:142
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:Q01855 Pfam ID:PF00203

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S16-A
Gene (Uniprot):RPS16A
Chain IDs:LB (auth: SQ)
Chain Length:143
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX51 Pfam ID:PF00380

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S17-B
Gene (Uniprot):RPS17B
Chain IDs:MB (auth: SR)
Chain Length:136
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P14127 Pfam ID:PF00833

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S18-A
Gene (Uniprot):RPS18A
Chain IDs:NB (auth: SS)
Chain Length:146
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX55 Pfam ID:PF00416

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S19-A
Gene (Uniprot):RPS19A
Chain IDs:OB (auth: ST)
Chain Length:144
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P07280 Pfam ID:PF01090

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Small ribosomal subunit protein uS10
Gene (Uniprot):RPS20
Chain IDs:PB (auth: SU)
Chain Length:121
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P38701 Pfam ID:PF00338

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S21-A
Gene (Uniprot):RPS21A
Chain IDs:QB (auth: SV)
Chain Length:87
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0C0V8 Pfam ID:PF01249

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S22-A
Gene (Uniprot):RPS22A
Chain IDs:RB (auth: SW)
Chain Length:130
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0C0W1 Pfam ID:PF00410

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S23-A
Gene (Uniprot):RPS23A
Chain IDs:SB (auth: SX)
Chain Length:145
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX29 Pfam ID:PF00164

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S24-A
Gene (Uniprot):RPS24A
Chain IDs:TB (auth: SY)
Chain Length:135
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX31 Pfam ID:PF01282

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S25-A
Gene (Uniprot):RPS25A
Chain IDs:UB (auth: SZ)
Chain Length:108
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:Q3E792 Pfam ID:PF03297

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Small ribosomal subunit protein eS26A
Gene (Uniprot):RPS26A
Chain IDs:VB (auth: Sa)
Chain Length:252
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P39938 Pfam ID:PF01283

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S27-A
Gene (Uniprot):RPS27A
Chain IDs:WB (auth: Sb)
Chain Length:255
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P35997 Pfam ID:PF01667

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Small ribosomal subunit protein eS28B
Gene (Uniprot):RPS28B
Chain IDs:XB (auth: Sc)
Chain Length:254
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0C0X0 Pfam ID:PF01200

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Small ribosomal subunit protein uS14A
Gene (Uniprot):RPS29A
Chain IDs:YB (auth: Sd)
Chain Length:240
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P41057 Pfam ID:PF00253

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S30-A
Gene (Uniprot):RPS30A
Chain IDs:ZB (auth: Se)
Chain Length:261
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P0CX33 Pfam ID:PF04758

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Guanine nucleotide-binding protein subunit beta-like protein
Gene (Uniprot):ASC1
Chain IDs:AC (auth: Sg)
Chain Length:236
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae

UniProt ID:P38011 Pfam ID:PF00400

Ligand Molecules

Primary Citation

The cotranslational cycle of the ribosome-bound Hsp70 homolog Ssb.

Zhang, Y, Grundmann, L, Vollmar, L, Schimpf, J, Hubscher, V, Areeb, M, Grishkovskaya, I, Moddemann, A, Werner, K, Hugel, T, Haselbach, D, Rospert, S.Show

Nat Commun ? ? ? (2026)

PMID: 41545346 DOI: 10.1038/s41467-025-67685-6

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Coupling of ribosomal translation with cotranslational protein folding is essential for cellular homeostasis. In eukaryotes, Hsp70 and its J-domain cochaperone, the heterodimeric ribosome-associated complex (RAC), are central to this process; however, mechanistic insights into the coordination of Hsp70 function with translation remain limited. Here, we present two cryo-EM structures of the ribosome-bound yeast Hsp70 Ssb, identifying Rpl25/uL23 as the ribosomal binding site and revealing its interaction with a model nascent chain. Together with detailed biochemical and mutational analyses, these structures enable us to delineate the intricate RAC-dependent cycle, which positions the substrate binding domain of Ssb-ATP close to the tunnel exit to receive nascent chains. This arrangement allows Ssb to undergo substantial conformational changes upon ATP hydrolysis without steric clashes with the ribosome, while the substrate binding domain of Ssb, now anchored by the tightly bound nascent chain, remains close to the tunnel exit.

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