8BSJ image
Deposition Date 2022-11-25
Release Date 2023-03-22
Last Version Date 2024-10-16
Entry Detail
PDB ID:
8BSJ
Keywords:
RIBOSOME
Title:
Giardia Ribosome in PRE-T Classical State (C)
Biological Source:
Source Organism:
Giardia intestinalis (Taxon ID: 5741)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
6.49 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
8BSJ validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L2
Gene (Uniprot):GL50803_0016086
Chain IDs:A (auth: LA)
Chain Length:135
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:E2RTN4 Pfam ID:PF00181, PF03947
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L3
Gene (Uniprot):GL50803_0016525
Chain IDs:B (auth: LB)
Chain Length:379
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BRZ3 Pfam ID:PF00297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L4
Gene (Uniprot):GL50803_0017547
Chain IDs:C (auth: LC)
Chain Length:62
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B7H8 Pfam ID:PF00573, PF14374
Polymer Type:polyribonucleotide
Molecule:5.8S rRNA
Chain IDs:D (auth: LD)
Chain Length:142
Number of Molecules:1
Biological Source:Giardia intestinalis
Polymer Type:polyribonucleotide
Molecule:5S rRNA
Chain IDs:E (auth: LE)
Chain Length:121
Number of Molecules:1
Biological Source:Giardia intestinalis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L5
Gene (Uniprot):GL50803_0017395
Chain IDs:F (auth: LF)
Chain Length:297
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:E2RU47 Pfam ID:PF17144, PF14204
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L39
Gene (Uniprot):GL50803_0060191
Chain IDs:G (auth: LG)
Chain Length:51
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A0A644EZB9 Pfam ID:PF00832
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L7
Gene (Uniprot):GL50803_0019436
Chain IDs:H (auth: LH)
Chain Length:235
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BRY6 Pfam ID:PF00327
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L7a
Gene (Uniprot):GL50803_0017244
Chain IDs:I (auth: LI)
Chain Length:225
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BLL7 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L6
Gene (Uniprot):GL50803_0017056
Chain IDs:J (auth: LJ)
Chain Length:90
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BNT5 Pfam ID:PF00347
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L10
Gene (Uniprot):GL50803_0010428
Chain IDs:K (auth: LK)
Chain Length:89
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BM86 Pfam ID:PF00252
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L11
Gene (Uniprot):GL50803_005593
Chain IDs:L (auth: LL)
Chain Length:173
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BI95 Pfam ID:PF00281, PF00673
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13
Chain IDs:M (auth: LM)
Chain Length:234
Number of Molecules:1
Biological Source:Giardia intestinalis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L14
Gene (Uniprot):GL50803_0014091
Chain IDs:N (auth: LN)
Chain Length:131
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B4F8 Pfam ID:PF01929
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L15
Gene (Uniprot):GL50803_008001
Chain IDs:O (auth: LO)
Chain Length:25
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B8Z6 Pfam ID:PF00827
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L13a
Gene (Uniprot):GL50803_0011247
Chain IDs:P (auth: LP)
Chain Length:197
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BU75 Pfam ID:PF00572
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L17
Gene (Uniprot):GL50803_0098056
Chain IDs:Q (auth: LQ)
Chain Length:94
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BE76 Pfam ID:PF00237
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L18
Gene (Uniprot):GL50803_0011950
Chain IDs:R (auth: LR)
Chain Length:179
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B4T7 Pfam ID:PF17135
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L19
Gene (Uniprot):GL50803_0016431
Chain IDs:S (auth: LS)
Chain Length:196
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BH61 Pfam ID:PF01280
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L18a
Chain IDs:T (auth: LT)
Chain Length:173
Number of Molecules:1
Biological Source:Giardia intestinalis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L21
Gene (Uniprot):GL50803_0015520
Chain IDs:U (auth: LU)
Chain Length:159
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B2Q4 Pfam ID:PF01157
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal L22e
Gene (Uniprot):GL50803_0016044
Chain IDs:V (auth: LV)
Chain Length:124
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A0A644FC41 Pfam ID:PF01776
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L23
Gene (Uniprot):GL50803_0010091
Chain IDs:W (auth: LW)
Chain Length:142
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BS37 Pfam ID:PF00238
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L24
Gene (Uniprot):GL50803_0014869
Chain IDs:X (auth: LX)
Chain Length:189
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B7P2 Pfam ID:PF01246
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L23A
Gene (Uniprot):GL50803_007870
Chain IDs:Y (auth: LY)
Chain Length:141
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BMP6 Pfam ID:PF03939, PF00276
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L26
Gene (Uniprot):GL50803_0015046
Chain IDs:Z (auth: LZ)
Chain Length:135
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BFT3 Pfam ID:PF16906
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27
Gene (Uniprot):GL50803_008462
Chain IDs:AA (auth: La)
Chain Length:135
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B1T3 Pfam ID:PF00467, PF01777
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L27a
Gene (Uniprot):GL50803_0016310
Chain IDs:BA (auth: Lb)
Chain Length:379
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BZ78 Pfam ID:PF00828
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Gene (Uniprot):GL50803_0014457
Chain IDs:CA (auth: Lc)
Chain Length:62
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BYY2 Pfam ID:PF01779
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L30
Gene (Uniprot):GL50803_0014321
Chain IDs:DA (auth: Ld)
Chain Length:142
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B5N7 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L31B
Gene (Uniprot):GL50803_0016368
Chain IDs:EA (auth: Le)
Chain Length:121
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BMP3 Pfam ID:PF01198
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L32
Gene (Uniprot):GL50803_0014049
Chain IDs:FA (auth: Lf)
Chain Length:297
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BMD9 Pfam ID:PF01655
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L35a
Gene (Uniprot):GL50803_005947
Chain IDs:GA (auth: Lg)
Chain Length:51
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BKK5 Pfam ID:PF01247
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L34
Gene (Uniprot):GL50803_0036069
Chain IDs:HA (auth: Lh)
Chain Length:235
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BMF7 Pfam ID:PF01199
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L29
Gene (Uniprot):GL50803_006133
Chain IDs:IA (auth: Li)
Chain Length:225
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A0A644FBK5 Pfam ID:PF00831
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L36-1
Gene (Uniprot):GL50803_0016114
Chain IDs:JA (auth: Lj)
Chain Length:90
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BYA6 Pfam ID:PF01158
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37
Gene (Uniprot):GL50803_0014171
Chain IDs:KA (auth: Lk)
Chain Length:89
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BLV7 Pfam ID:PF01907
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal L38e
Gene (Uniprot):GL50803_0034093
Chain IDs:LA (auth: Ll)
Chain Length:173
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B481 Pfam ID:PF01781
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L10a
Gene (Uniprot):GL50803_001345
Chain IDs:MA (auth: Ln)
Chain Length:131
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A0A644FB74 Pfam ID:PF00687
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L41
Gene (Uniprot):GSB_151147
Chain IDs:NA (auth: Lo)
Chain Length:25
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:V6TX21 Pfam ID:PF05162
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L44
Gene (Uniprot):GL50803_009810
Chain IDs:OA (auth: Lp)
Chain Length:197
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BQU8 Pfam ID:PF00935
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37a
Gene (Uniprot):GL50803_005517
Chain IDs:PA (auth: Lq)
Chain Length:94
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BN26 Pfam ID:PF01780
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ubiquitin/Ribosomal protein L40e
Gene (Uniprot):GL50803_005665
Chain IDs:QA (auth: Ls)
Chain Length:196
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BXE1 Pfam ID:PF00240, PF01020
Polymer Type:polyribonucleotide
Molecule:Large Subunit rRNA
Chain IDs:RA (auth: Lt)
Chain Length:173
Number of Molecules:1
Biological Source:Giardia intestinalis
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein SA
Chain IDs:SA
Chain Length:245
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BE86 Pfam ID:PF00318
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S2
Gene (Uniprot):GL50803_008118
Chain IDs:TA (auth: SB)
Chain Length:132
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BMZ1 Pfam ID:PF00333, PF03719
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S3
Gene (Uniprot):GL50803_007999
Chain IDs:UA (auth: SC)
Chain Length:217
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B8Z2 Pfam ID:PF00189
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S3a
Chain IDs:VA (auth: SD)
Chain Length:248
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BS79 Pfam ID:PF01015
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S4
Gene (Uniprot):GL50803_0011359
Chain IDs:WA (auth: SE)
Chain Length:81
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BFE3 Pfam ID:PF08071, PF00900, PF16121
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S5
Gene (Uniprot):GL50803_0012981
Chain IDs:XA (auth: SF)
Chain Length:190
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BZD3 Pfam ID:PF00177
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S6
Gene (Uniprot):GL50803_0014620
Chain IDs:YA (auth: SG)
Chain Length:248
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B6L8 Pfam ID:PF01092
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S7
Gene (Uniprot):GL50803_0014329
Chain IDs:ZA (auth: SH)
Chain Length:190
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BT38 Pfam ID:PF01251
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S8
Gene (Uniprot):GL50803_005845
Chain IDs:AB (auth: SI)
Chain Length:174
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B252 Pfam ID:PF01201
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S15A
Gene (Uniprot):GL50803_0015228
Chain IDs:BB (auth: SJ)
Chain Length:69
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:E2RU77 Pfam ID:PF00410
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S9
Gene (Uniprot):GL50803_004547
Chain IDs:CB (auth: SK)
Chain Length:189
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BKS8 Pfam ID:PF00163, PF01479
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S10B
Gene (Uniprot):GL50803_0010919
Chain IDs:DB (auth: SL)
Chain Length:134
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BRX3 Pfam ID:PF03501
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S11
Gene (Uniprot):GL50803_0014827
Chain IDs:EB (auth: SM)
Chain Length:154
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BVU0 Pfam ID:PF16205, PF00366
Protein Blast
Polymer Type:polypeptide(L)
Molecule:SSU ribosomal protein S12P
Gene (Uniprot):DHA2_14699
Chain IDs:FB (auth: SO)
Chain Length:143
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:V6T9I6 Pfam ID:PF00164
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S13
Gene (Uniprot):GL50803_0016652
Chain IDs:GB (auth: SP)
Chain Length:154
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BE02 Pfam ID:PF08069, PF00312
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S14
Chain IDs:HB (auth: SQ)
Chain Length:145
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:E2RU83 Pfam ID:PF00411
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S15
Gene (Uniprot):GL50803_0015260
Chain IDs:IB (auth: SR)
Chain Length:145
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BBP3 Pfam ID:PF00203
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S16
Gene (Uniprot):GL50803_004652
Chain IDs:JB (auth: ST)
Chain Length:1454
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BKC6 Pfam ID:PF00380
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S17
Gene (Uniprot):GL50803_006135
Chain IDs:KB (auth: SU)
Chain Length:137
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BRG5 Pfam ID:PF00833
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S18
Gene (Uniprot):GL50803_0015551
Chain IDs:LB (auth: SV)
Chain Length:154
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BZ58 Pfam ID:PF00416
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S19e
Gene (Uniprot):GL50803_0060211
Chain IDs:MB (auth: SW)
Chain Length:139
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A0A644F964 Pfam ID:PF01090
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S20
Gene (Uniprot):GL50803_006022
Chain IDs:NB (auth: SX)
Chain Length:126
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B4G0 Pfam ID:PF00338
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S21
Gene (Uniprot):GL50803_007082
Chain IDs:OB (auth: SY)
Chain Length:89
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B484 Pfam ID:PF01249
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S24
Gene (Uniprot):GL50803_0010367
Chain IDs:PB (auth: Sb)
Chain Length:132
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B593 Pfam ID:PF01282
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S25
Gene (Uniprot):GL50803_0013268
Chain IDs:QB (auth: Sc)
Chain Length:217
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B8H7 Pfam ID:PF03297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S26
Gene (Uniprot):GL50803_0017364
Chain IDs:RB (auth: Sd)
Chain Length:248
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8BQZ7 Pfam ID:PF01283
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S27
Gene (Uniprot):GL50803_0010780
Chain IDs:SB (auth: Se)
Chain Length:81
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A0A644F5K9 Pfam ID:PF01667
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S28
Gene (Uniprot):GL50803_003570
Chain IDs:TB (auth: Sg)
Chain Length:248
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A8B4F3 Pfam ID:PF01200
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein S29A
Chain IDs:UB (auth: Sh)
Chain Length:190
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A0A644FA19 Pfam ID:PF00253
Protein Blast
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S30
Gene (Uniprot):GL50803_0060147
Chain IDs:VB (auth: Sj)
Chain Length:69
Number of Molecules:1
Biological Source:Giardia intestinalis
UniProt ID:A0A644F843 Pfam ID:PF04758
Polymer Type:polyribonucleotide
Molecule:Small Subunit rRNA
Chain IDs:WB (auth: St)
Chain Length:1454
Number of Molecules:1
Biological Source:Giardia intestinalis
Polymer Type:polyribonucleotide
Molecule:tRNA
Chain IDs:XB (auth: u), YB (auth: v)
Chain Length:75
Number of Molecules:2
Biological Source:Giardia intestinalis
Polymer Type:polyribonucleotide
Molecule:tRNA
Chain IDs:ZB (auth: x)
Chain Length:74
Number of Molecules:1
Biological Source:Giardia intestinalis
Polymer Type:polyribonucleotide
Molecule:mRNA
Chain IDs:AC (auth: y)
Chain Length:11
Number of Molecules:1
Biological Source:Giardia intestinalis
Ligand Molecules
NA
Primary Citation
Insights into translocation mechanism and ribosome evolution from cryo-EM structures of translocation intermediates of Giardia intestinalis.
Nucleic Acids Res. 51 3436 3451 (2023)
PMID: 36912103 DOI: 10.1093/nar/gkad176

Abstact

Giardia intestinalis is a protozoan parasite that causes diarrhea in humans. Using single-particle cryo-electron microscopy, we have determined high-resolution structures of six naturally populated translocation intermediates, from ribosomes isolated directly from actively growing Giardia cells. The highly compact and uniquely GC-rich Giardia ribosomes possess eukaryotic rRNAs and ribosomal proteins, but retain some bacterial features. The translocation intermediates, with naturally bound tRNAs and eukaryotic elongation factor 2 (eEF2), display characteristic ribosomal intersubunit rotation and small subunit's head swiveling-universal for translocation. In addition, we observe the eukaryote-specific 'subunit rolling' dynamics, albeit with limited features. Finally, the eEF2·GDP state features a uniquely positioned 'leaving phosphate (Pi)' that proposes hitherto unknown molecular events of Pi and eEF2 release from the ribosome at the final stage of translocation. In summary, our study elucidates the mechanism of translocation in the protists and illustrates evolution of the translation machinery from bacteria to eukaryotes from both the structural and mechanistic perspectives.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
8BSJ