Hepatitis C virus nonstructural protein 4A

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Structures	Swiss-model
Domains	InterPro

	HCV genome
Identifiers
Organism	Hepacivirus hominis
Symbol	NS4A
Entrez	951475
RefSeq (Prot)	NP_751925.1
UniProt	F0UY39
Other data
Chromosome	Genomic: 0.01 - 0.01 Mb
Structures
Search for
Structures	Swiss-model
Domains	InterPro

Last updated November 21, 2025

Nonstructural protein 4A (NS4A) is a viral protein found in the hepatitis C virus. It acts as a cofactor for the enzyme NS3.^[1]

References

↑ Beld M, Penning M, van Putten M, van den Hoek A, Lukashov V, McMorrow M, et al. (October 1998). "Hepatitis C virus serotype-specific core and NS4 antibodies in injecting drug users participating in the Amsterdam cohort studies". Journal of Clinical Microbiology. 36 (10): 3002–3006. doi:10.1128/JCM.36.10.3002-3006.1998. PMC 105101 . PMID 9738057.

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[Beld_1998-1] Beld M, Penning M, van Putten M, van den Hoek A, Lukashov V, McMorrow M, et al. (October 1998). "Hepatitis C virus serotype-specific core and NS4 antibodies in injecting drug users participating in the Amsterdam cohort studies". Journal of Clinical Microbiology. 36 (10): 3002–3006. doi:10.1128/JCM.36.10.3002-3006.1998. PMC 105101 . PMID 9738057.

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