5MC6 image
Deposition Date 2016-11-09
Release Date 2017-01-18
Last Version Date 2025-07-09
Entry Detail
PDB ID:
5MC6
Keywords:
Title:
Cryo-EM structure of a native ribosome-Ski2-Ski3-Ski8 complex from S. cerevisiae
Biological Source:
Method Details:
Experimental Method:
Resolution:
3.80 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:18S ribosomal RNA
Chain IDs:A (auth: 2)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S3
Gene (Uniprot):RPS3
Chain IDs:B (auth: A)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L8-A
Gene (Uniprot):RPL8A
Chain IDs:PA (auth: AA)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L23-A
Gene (Uniprot):RPL23A
Chain IDs:QA (auth: AB)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36-A
Gene (Uniprot):RPL36A
Chain IDs:RA (auth: AC)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L9-A
Gene (Uniprot):RPL9A
Chain IDs:SA (auth: AD)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L24-A
Gene (Uniprot):RPL24A
Chain IDs:TA (auth: AE)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L37-A
Gene (Uniprot):RPL37A
Chain IDs:UA (auth: AF)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L11-A
Gene (Uniprot):RPL11A
Chain IDs:VA (auth: AG)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L25
Gene (Uniprot):RPL25
Chain IDs:WA (auth: AH)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L38
Gene (Uniprot):RPL38
Chain IDs:XA (auth: AI)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13-A
Gene (Uniprot):RPL13A
Chain IDs:YA (auth: AJ)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L26-A
Gene (Uniprot):RPL26A
Chain IDs:ZA (auth: AK)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L39
Gene (Uniprot):RPL39
Chain IDs:AB (auth: AL)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L14-A
Gene (Uniprot):RPL14A
Chain IDs:BB (auth: AM)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27-A
Gene (Uniprot):RPL27A
Chain IDs:CB (auth: AN)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:Ubiquitin-60S ribosomal prote
Gene (Uniprot):RPL40A
Chain IDs:DB (auth: AO)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L42-A
Gene (Uniprot):RPL42A
Chain IDs:EB (auth: AP)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L15-A
Gene (Uniprot):RPL15A
Chain IDs:FB (auth: AQ)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L28
Gene (Uniprot):RPL28
Chain IDs:GB (auth: AR)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L41-A
Gene (Uniprot):RPL41A
Chain IDs:HB (auth: AS)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L43-A
Gene (Uniprot):RPL43A
Chain IDs:IB (auth: AT)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L16-A
Gene (Uniprot):RPL16A
Chain IDs:JB (auth: AU)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Gene (Uniprot):RPL29
Chain IDs:KB (auth: AV)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L2-A
Gene (Uniprot):RPL2A
Chain IDs:LB (auth: AW)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L17-A
Gene (Uniprot):RPL17A
Chain IDs:MB (auth: AX)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L30
Gene (Uniprot):RPL30
Chain IDs:NB (auth: AY)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:uL1
Chain IDs:OB (auth: AZ)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S5
Gene (Uniprot):RPS5
Chain IDs:C (auth: B)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L3
Gene (Uniprot):RPL3
Chain IDs:PB (auth: BA)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L18-A
Gene (Uniprot):RPL18A
Chain IDs:QB (auth: BB)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L31-A
Gene (Uniprot):RPL31A
Chain IDs:RB (auth: BC)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L10
Gene (Uniprot):RPL10
Chain IDs:SB (auth: BD)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L4-A
Gene (Uniprot):RPL4A
Chain IDs:TB (auth: BE)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L19-A
Gene (Uniprot):RPL19A
Chain IDs:UB (auth: BF)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L32
Gene (Uniprot):RPL32
Chain IDs:VB (auth: BG)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L20-A
Gene (Uniprot):RPL20A
Chain IDs:WB (auth: BH)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L5
Gene (Uniprot):RPL5
Chain IDs:XB (auth: BI)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L21-A
Gene (Uniprot):RPL21A
Chain IDs:YB (auth: BJ)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L33-A
Gene (Uniprot):RPL33A
Chain IDs:ZB (auth: BK)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L22-A
Gene (Uniprot):RPL22A
Chain IDs:AC (auth: BL)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6-A
Gene (Uniprot):RPL6A
Chain IDs:BC (auth: BM)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L34-A
Gene (Uniprot):RPL34A
Chain IDs:CC (auth: BN)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L7-A
Gene (Uniprot):RPL7A
Chain IDs:DC (auth: BO)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35-A
Gene (Uniprot):RPL35A
Chain IDs:EC (auth: BP)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:25S ribosomal RNA
Chain IDs:FC (auth: BQ)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:5S ribosomal RNA
Chain IDs:GC (auth: BR)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:5.8S ribosomal RNA
Chain IDs:HC (auth: BS)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:Eukaryotic translation initia
Gene (Uniprot):HYP2
Chain IDs:IC (auth: BT)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S10-A
Gene (Uniprot):RPS10A
Chain IDs:D (auth: C)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S12
Gene (Uniprot):RPS12
Chain IDs:E (auth: D)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S15
Gene (Uniprot):RPS15
Chain IDs:F (auth: E)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S16-A
Gene (Uniprot):RPS16A
Chain IDs:G (auth: F)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S17-B
Gene (Uniprot):RPS17B
Chain IDs:H (auth: G)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S18-A
Gene (Uniprot):RPS18A
Chain IDs:I (auth: H)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S19-A
Gene (Uniprot):RPS19A
Chain IDs:J (auth: I)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S20
Gene (Uniprot):RPS20
Chain IDs:K (auth: J)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S25-A
Gene (Uniprot):RPS25A
Chain IDs:L (auth: K)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S28-B
Gene (Uniprot):RPS28B
Chain IDs:M (auth: L)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S29-A
Gene (Uniprot):RPS29A
Chain IDs:N (auth: M)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:Ubiquitin-40S ribosomal prote
Gene (Uniprot):RPS31
Chain IDs:O (auth: N)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:Guanine nucleotide-binding pr
Gene (Uniprot):ASC1
Chain IDs:P (auth: O)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S0-A
Gene (Uniprot):RPS0A
Chain IDs:Q (auth: P)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S1-A
Gene (Uniprot):RPS1A
Chain IDs:R (auth: Q)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S2
Gene (Uniprot):RPS2
Chain IDs:S (auth: R)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S4-A
Gene (Uniprot):RPS4A
Chain IDs:T (auth: S)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S6-A
Gene (Uniprot):RPS6A
Chain IDs:U (auth: T)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S7-A
Gene (Uniprot):RPS7A
Chain IDs:V (auth: U)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S8-A
Gene (Uniprot):RPS8A
Chain IDs:W (auth: V)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S9-A
Gene (Uniprot):RPS9A
Chain IDs:X (auth: W)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S11-A
Gene (Uniprot):RPS11A
Chain IDs:Y (auth: X)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S13
Gene (Uniprot):RPS13
Chain IDs:Z (auth: Y)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S14-A
Gene (Uniprot):RPS14A
Chain IDs:AA (auth: Z)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S21-A
Gene (Uniprot):RPS21A
Chain IDs:BA (auth: a)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S22-A
Gene (Uniprot):RPS22A
Chain IDs:CA (auth: b)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S23-A
Gene (Uniprot):RPS23A
Chain IDs:DA (auth: c)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S24-A
Gene (Uniprot):RPS24A
Chain IDs:EA (auth: d)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S26-A
Gene (Uniprot):RPS26A
Chain IDs:FA (auth: e)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S27-A
Gene (Uniprot):RPS27A
Chain IDs:GA (auth: f)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:40S ribosomal protein S30-A
Gene (Uniprot):RPS30A
Chain IDs:HA (auth: g)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:Antiviral helicase SKI2
Gene (Uniprot):SKI2
Chain IDs:LA (auth: h)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:Superkiller protein 3
Gene (Uniprot):SKI3
Chain IDs:MA (auth: i)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polypeptide(L)
Molecule:Antiviral protein SKI8
Gene (Uniprot):SKI8
Chain IDs:NA (auth: j), OA (auth: k)
Chain Length:0
Number of Molecules:2
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:mRNA
Chain IDs:IA (auth: l)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:A-site tRNA
Chain IDs:JA (auth: m)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Polymer Type:polyribonucleotide
Molecule:P-site tRNA
Chain IDs:KA (auth: n)
Chain Length:0
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
5CT IC LYS modified residue
Ligand Molecules
Primary Citation
The cryo-EM structure of a ribosome-Ski2-Ski3-Ski8 helicase complex.
Science 354 1431 1433 (2016)
PMID: 27980209 DOI: 10.1126/science.aaf7520

Abstact

Ski2-Ski3-Ski8 (Ski) is a helicase complex functioning with the RNA-degrading exosome to mediate the 3'-5' messenger RNA (mRNA) decay in turnover and quality-control pathways. We report that the Ski complex directly associates with 80S ribosomes presenting a short mRNA 3' overhang. We determined the structure of an endogenous ribosome-Ski complex using cryo-electron microscopy (EM) with a local resolution of the Ski complex ranging from 4 angstroms (Å) in the core to about 10 Å for intrinsically flexible regions. Ribosome binding displaces the autoinhibitory domain of the Ski2 helicase, positioning it in an open conformation near the ribosomal mRNA entry tunnel. We observe that the mRNA 3' overhang is threaded directly from the small ribosomal subunit to the helicase channel of Ski2, primed for ongoing exosome-mediated 3'-5' degradation.

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Protein

Chemical

Disease

Primary Citation of related structures
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