P26664: 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: P26664.

Organism
Hepatitis C virus genotype 1a
Length
122 residues
Mean pLDDT
90.7
Model
AF-0000000365760139 v1
Model created
3 Jul 2025
PDB structures
35

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Model confidence (pLDDT)

The mean pLDDT of this model is 90.7 (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 accurate70%
70 to 90Confident: backbone generally right27%
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 (By similarity). 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 signaling…

Subunit structure

Homooligomer (By similarity). 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 (By…

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
3HKWX-ray1.55 ÅA/B/C=2421-2990
7MMEX-ray1.56 ÅA=1030-1207
3RC5X-ray1.6 ÅA=1026-1208
7MMAX-ray1.65 ÅA=1030-1207
7MMLX-ray1.7 ÅA=1030-1207
6P6LX-ray1.73 ÅA=1013-1026, A=1030-1208
6P6RX-ray1.75 ÅA=1013-1026, A=1030-1208
7MM3X-ray1.78 ÅA=1030-1207
3QGIX-ray1.8 ÅA=2421-2988
5VOJX-ray1.8 ÅA=1013-1026, A=1029-1208
5VP9X-ray1.86 ÅA=1013-1026, A=1029-1208
7MM4X-ray1.89 ÅA=1030-1207
7MMDX-ray1.89 ÅA=1030-1207
7MMKX-ray1.89 ÅA=1030-1205
6VDMX-ray1.9 ÅA=1013-1026, A=1030-1208
6MVOX-ray1.95 ÅA/B=2421-2982
6VDLX-ray1.95 ÅA=1013-1026, A=1030-1208
7MMBX-ray1.99 ÅA=1030-1207
6P6OX-ray2.0 ÅA=1013-1026, A=1030-1207

Showing 20 of 35 experimental structures (best resolution first).

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