FEATURES

FAMILY

DESCRIPTION

Also known as DHX58_HUMAN, DHX58, D11LGP2E, LGP2. Acts as a regulator of DDX58/RIG-I and IFIH1/MDA5 mediated antiviral signaling. Cannot initiate antiviral signaling as it lacks the CARD domain required for activating MAVS/IPS1-dependent signaling events. Can have both negative and positive regulatory functions related to DDX58/RIG-I and IFIH1/MDA5 signaling and this role in regulating signaling may be complex and could probably depend on characteristics of the infecting virus or target cells, or both. Its inhibitory action on DDX58/RIG-I signaling may involve the following mechanisms: competition with DDX58/RIG-I for binding to the viral RNA, binding to DDX58/RIG-I and inhibiting its dimerization and interaction with MAVS/IPS1, competing with IKBKE in its binding to MAVS/IPS1 thereby inhibiting activation of interferon regulatory factor 3 (IRF3). Its positive regulatory role may involve unwinding or stripping nucleoproteins of viral RNA thereby facilitating their recognition by DDX58/RIG-I and IFIH1/MDA5. Involved in the innate immune response to various RNA viruses and some DNA viruses such as poxviruses and coronavirus SARS-CoV-2, and also to the bacterial pathogen Listeria monocytogenes (PubMed:31256877). Can bind both ssRNA and dsRNA, with a higher affinity for dsRNA. Shows a preference to 5'-triphosphorylated RNA, although it can recognize RNA lacking a 5'-triphosphate. Monomer in the absence of dsRNA. Homodimer in the presence of dsRNA. Interacts with DDX58/RIG-I (via CARD domain), MAVS/IPS1 and DDX60. Found in a complex with DDX58/RIG-I and IFIH1/MDA5. Interacts with ANKRD17. Directly interacts with ATG5 and ATG12, either as ATG5 and ATG12 monomers or as ATG12-ATG5 conjugates (PubMed:17709747).

EXTERNAL LINKS

DHX58

Probable ATP-dependent RNA helicase DHX58

Structural Ligandability

Domains Chains

0 chains assessed

1 chain not associated with a domain

DHX58

Structural Ligandability

Domains Chains

Distribution