P27958: Genome polyprotein

Genome polyprotein is a 122-residue protein from Hepatitis C virus genotype 1a. This is its AlphaFold structure prediction, created 3 Jul 2025. UniProt accession: P27958.

Organism
Hepatitis C virus genotype 1a
Length
122 residues
Mean pLDDT
90.3
Model
AF-0000000365761510 v1
Model created
3 Jul 2025
PDB structures
59

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Model confidence (pLDDT)

The mean pLDDT of this model is 90.3 (very high overall). pLDDT is AlphaFold's per-residue confidence score from 0 to 100. In MolViewer, choose the B-factor color scheme to color the model by pLDDT, because AlphaFold stores it in the B-factor column.

pLDDT bandMeaningShare of residues
Above 90Very high: backbone and side chains are usually accurate65%
70 to 90Confident: backbone generally right33%
50 to 70Low: treat with caution3%
Below 50Very low: often disordered regions0%

What pLDDT means and how to read it

Function

Packages viral RNA to form a viral nucleocapsid, and promotes virion budding (Probable). Participates in the viral particle production as a result of its interaction with the non-structural protein 5A (By similarity). Binds RNA and may function as a RNA chaperone to induce the RNA structural rearrangements taking place during virus replication (PubMed:18033802). Modulates viral translation initiation by interacting with viral IRES and 40S ribosomal subunit (By similarity). Affects various cell signaling pathways, host immunity and lipid metabolism (Probable). Prevents the establishment of cellular antiviral state by blocking the interferon-alpha/beta (IFN-alpha/beta) and IFN-gamma…

Subunit structure

Homooligomer (PubMed:25351725). Interacts with E1 (via C-terminus) (PubMed:8764026). Interacts with the non-structural protein 5A (By similarity). Interacts (via N-terminus) with host STAT1 (via SH2 domain); this interaction results in decreased STAT1 phosphorylation and ubiquitin-mediated proteasome-dependent STAT1 degradation, leading to decreased IFN-stimulated gene transcription…

Subcellular location

Host endoplasmic reticulum membrane, Host mitochondrion membrane, Virion, Host cytoplasm, Host nucleus, Host lipid droplet, Virion membrane, Host mitochondrion, Host cell membrane, Host cytoplasm, host perinuclear region

Experimental structures in the PDB

Compare the prediction with experimentally determined structures of the same protein:

PDB IDMethodResolutionChains and residues
3RC4X-ray1.5 ÅA=1026-1208
3RC5X-ray1.6 ÅA=1026-1208
6BZYX-ray1.6 ÅB=412-423
5FGBX-ray1.65 ÅF/G=405-425
6BQJX-ray1.69 ÅA/B/C=1030-1208
2XI3X-ray1.7 ÅA/B=2421-2990
4N0YX-ray1.75 ÅA=314-324
2XI2X-ray1.8 ÅA/B/C=2421-2990
5FGCX-ray1.9 ÅA=405-425
6UYDX-ray1.9 ÅE/F=412-645
6BQKX-ray1.97 ÅA/B=1030-1208
5EOCX-ray1.98 ÅP/Q=412-422
2O8MX-ray2.0 ÅA/B=1027-1207, C/D=1678-1696
4XVJX-ray2.0 ÅA=412-423
4Z0XX-ray2.0 ÅC=435-446
5YXNX-ray2.03 ÅI=1406-1415
4JZNX-ray2.05 ÅK=434-446
1HEIX-ray2.1 ÅA/B=1206-1656
1A1VX-ray2.2 ÅA=1193-1659
6BZWX-ray2.2 ÅI/J/K/L=412-423

Showing 20 of 59 experimental structures (best resolution first).

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