6FTI image
Deposition Date 2018-02-22
Release Date 2018-03-21
Last Version Date 2025-04-09
Entry Detail
PDB ID:
6FTI
Keywords:
PROTEIN TRANSPORT
Title:
Cryo-EM Structure of the Mammalian Oligosaccharyltransferase Bound to Sec61 and the Programmed 80S Ribosome
Biological Source:
Source Organism:
Oryctolagus cuniculus (Taxon ID: 9986)
Canis lupus familiaris (Taxon ID: 9615)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
4.20 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
6FTI validation report
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Unidentified TM
Chain IDs:HB (auth: 0)
Chain Length:24
Number of Molecules:1
Biological Source:Canis lupus familiaris
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 1,RPN1
Gene (Uniprot):RPN1
Chain IDs:ZA (auth: 1)
Chain Length:162
Number of Molecules:1
Biological Source:Canis lupus familiaris
UniProt ID:E2RQ08
Polymer Type:polypeptide(L)
Molecule:TMEM258
Chain IDs:AB (auth: 2)
Chain Length:60
Number of Molecules:1
Biological Source:Canis lupus familiaris
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Oligosaccharyltransferase complex subunit OSTC
Gene (Uniprot):OSTC
Chain IDs:BB (auth: 3)
Chain Length:120
Number of Molecules:1
Biological Source:Canis lupus familiaris
UniProt ID:P86218 Pfam ID:PF04756
Polymer Type:polypeptide(L)
Molecule:Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit 4
Chain IDs:CB (auth: 4)
Chain Length:34
Number of Molecules:1
Biological Source:Canis lupus familiaris
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit STT3A
Gene (Uniprot):STT3A
Chain IDs:DB (auth: 5)
Chain Length:705
Number of Molecules:1
Biological Source:Canis lupus familiaris
UniProt ID:F1PJP5 Pfam ID:PF02516, PF22627
Polymer Type:polypeptide(L)
Molecule:DAD1
Chain IDs:EB (auth: 6)
Chain Length:109
Number of Molecules:1
Biological Source:Canis lupus familiaris
Polymer Type:polypeptide(L)
Molecule:OST48
Chain IDs:FB (auth: 7)
Chain Length:25
Number of Molecules:1
Biological Source:Canis lupus familiaris
Polymer Type:polypeptide(L)
Molecule:RPN1
Chain IDs:GB (auth: 8)
Chain Length:80
Number of Molecules:1
Biological Source:Canis lupus familiaris
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL2
Gene (Uniprot):RPL8
Chain IDs:A
Chain Length:244
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TT27 Pfam ID:PF00181, PF03947
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL3
Gene (Uniprot):RPL3
Chain IDs:B
Chain Length:75
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TL06 Pfam ID:PF00297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L4
Gene (Uniprot):RPL4
Chain IDs:C
Chain Length:362
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SVW5 Pfam ID:PF00573, PF14374
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L5
Chain IDs:D
Chain Length:107
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:P19949
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6
Chain IDs:E
Chain Length:248
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TG04 Pfam ID:PF03868, PF01159
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL30
Gene (Uniprot):RPL7
Chain IDs:F
Chain Length:109
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SV32 Pfam ID:PF08079, PF00327
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL8
Gene (Uniprot):RPL7A
Chain IDs:G
Chain Length:241
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1STW0 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL6
Chain IDs:H
Chain Length:190
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SWI6 Pfam ID:PF00347
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L10 (Predicted)
Gene (Uniprot):RPL10
Chain IDs:I
Chain Length:102
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:B7NZQ2 Pfam ID:PF00252
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L11
Gene (Uniprot):RPL11
Chain IDs:J
Chain Length:169
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TUB8 Pfam ID:PF00281, PF00673
Polymer Type:polypeptide(L)
Molecule:eL13
Chain IDs:K (auth: L)
Chain Length:50
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L14
Chain IDs:L (auth: M)
Chain Length:138
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SZ12 Pfam ID:PF01929
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L15
Gene (Uniprot):RPL15
Chain IDs:M (auth: N)
Chain Length:203
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T0C1 Pfam ID:PF00827
Polymer Type:polypeptide(L)
Molecule:uL13
Chain IDs:N (auth: O)
Chain Length:199
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL22
Chain IDs:O (auth: P)
Chain Length:153
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SCJ6 Pfam ID:PF00237
Polymer Type:polypeptide(L)
Molecule:uL14
Chain IDs:P (auth: Q)
Chain Length:187
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polypeptide(L)
Molecule:eL19
Chain IDs:Q (auth: R)
Chain Length:180
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polypeptide(L)
Molecule:eL20
Chain IDs:R (auth: S)
Chain Length:198
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL21
Gene (Uniprot):RPL21
Chain IDs:S (auth: T)
Chain Length:159
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SHQ2 Pfam ID:PF01157
Polymer Type:polypeptide(L)
Molecule:eL22
Chain IDs:T (auth: U)
Chain Length:99
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL14
Gene (Uniprot):RPL23
Chain IDs:U (auth: V)
Chain Length:131
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T6D1 Pfam ID:PF00238
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L24
Gene (Uniprot):RPL24
Chain IDs:V (auth: W)
Chain Length:63
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SE28 Pfam ID:PF01246
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL23
Gene (Uniprot):RPL23A
Chain IDs:W (auth: X)
Chain Length:461
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SE76 Pfam ID:PF03939, PF00276
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L26
Gene (Uniprot):RPL26
Chain IDs:X (auth: Y)
Chain Length:134
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SQH0 Pfam ID:PF16906, PF00467
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27
Gene (Uniprot):RPL27
Chain IDs:Y (auth: Z)
Chain Length:29
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TXF6 Pfam ID:PF00467, PF01777
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL15
Gene (Uniprot):RPL27A
Chain IDs:Z (auth: a)
Chain Length:244
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SNY0 Pfam ID:PF00828
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Chain IDs:AA (auth: b)
Chain Length:75
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SGR6 Pfam ID:PF01779
Polymer Type:polypeptide(L)
Molecule:eL30
Chain IDs:BA (auth: c)
Chain Length:362
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL31
Gene (Uniprot):RPL31
Chain IDs:CA (auth: d)
Chain Length:107
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SHG0 Pfam ID:PF01198
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL32
Gene (Uniprot):RPL32
Chain IDs:DA (auth: e)
Chain Length:248
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TUN8 Pfam ID:PF01655
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL33
Gene (Uniprot):RPL35A
Chain IDs:EA (auth: f)
Chain Length:109
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SF08 Pfam ID:PF01247
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL34
Chain IDs:FA (auth: g)
Chain Length:241
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TXG5 Pfam ID:PF01199
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL29
Gene (Uniprot):RPL35
Chain IDs:GA (auth: h)
Chain Length:190
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SIT5 Pfam ID:PF00831
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36
Gene (Uniprot):RPL36
Chain IDs:HA (auth: i)
Chain Length:102
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TTQ5 Pfam ID:PF01158
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37
Gene (Uniprot):RPL37
Chain IDs:IA (auth: j)
Chain Length:169
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:U3KPD5 Pfam ID:PF01907
Polymer Type:polypeptide(L)
Molecule:eL38
Chain IDs:JA (auth: k)
Chain Length:69
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL39
Gene (Uniprot):RPL39
Chain IDs:KA (auth: l)
Chain Length:50
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SYU7 Pfam ID:PF00832
Polymer Type:polypeptide(L)
Molecule:eL40
Chain IDs:LA (auth: m)
Chain Length:138
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60s ribosomal protein l41
Gene (Uniprot):RPL41
Chain IDs:MA (auth: n)
Chain Length:203
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:A0A087WNH4 Pfam ID:PF05162
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL42
Gene (Uniprot):RPL36A
Chain IDs:NA (auth: o)
Chain Length:199
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T040 Pfam ID:PF00935
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37a
Gene (Uniprot):RPL37A
Chain IDs:OA (auth: p)
Chain Length:153
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SY53 Pfam ID:PF01780
Polymer Type:polyribonucleotide
Molecule:p-Site tRNA
Chain IDs:SA (auth: q)
Chain Length:187
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL28
Gene (Uniprot):RPL28
Chain IDs:PA (auth: r)
Chain Length:180
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1U7L1 Pfam ID:PF01778
Polymer Type:polypeptide(L)
Molecule:60S acidic ribosomal protein P0
Chain IDs:QA (auth: s)
Chain Length:198
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L12
Gene (Uniprot):RPL12
Chain IDs:RA (auth: t)
Chain Length:159
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SMR7 Pfam ID:PF03946, PF00298
Polymer Type:polyribonucleotide
Molecule:28S rRNA
Chain IDs:TA (auth: u)
Chain Length:99
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:5S ribosomal RNA
Chain IDs:UA (auth: v)
Chain Length:131
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:5.8S ribosomal RNA
Chain IDs:VA (auth: w)
Chain Length:63
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Protein transport protein Sec61 subunit alpha isoform 1
Gene (Uniprot):SEC61A1
Chain IDs:WA (auth: x)
Chain Length:461
Number of Molecules:1
Biological Source:Canis lupus familiaris
UniProt ID:P38377 Pfam ID:PF10559, PF00344
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Protein transport protein Sec61 subunit gamma
Gene (Uniprot):SEC61G
Chain IDs:XA (auth: y)
Chain Length:134
Number of Molecules:1
Biological Source:Canis lupus familiaris
UniProt ID:P60058 Pfam ID:PF00584
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Protein transport protein Sec61 subunit beta
Gene (Uniprot):SEC61B
Chain IDs:YA (auth: z)
Chain Length:29
Number of Molecules:1
Biological Source:Canis lupus familiaris
UniProt ID:P60467 Pfam ID:PF03911
Ligand Molecules
9UB
MG
ZN
Primary Citation
Structural basis for coupling protein transport and N-glycosylation at the mammalian endoplasmic reticulum.
Science 360 215 219 (2018)
PMID: 29519914 DOI: 10.1126/science.aar7899

Abstact

Protein synthesis, transport, and N-glycosylation are coupled at the mammalian endoplasmic reticulum by complex formation of a ribosome, the Sec61 protein-conducting channel, and oligosaccharyltransferase (OST). Here we used different cryo-electron microscopy approaches to determine structures of native and solubilized ribosome-Sec61-OST complexes. A molecular model for the catalytic OST subunit STT3A (staurosporine and temperature sensitive 3A) revealed how it is integrated into the OST and how STT3-paralog specificity for translocon-associated OST is achieved. The OST subunit DC2 was placed at the interface between Sec61 and STT3A, where it acts as a versatile module for recruitment of STT3A-containing OST to the ribosome-Sec61 complex. This detailed structural view on the molecular architecture of the cotranslational machinery for N-glycosylation provides the basis for a mechanistic understanding of glycoprotein biogenesis at the endoplasmic reticulum.

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Disease

Primary Citation of related structures
6FTI