Recombinant Human Probable ATP-dependent RNA helicase DHX58 (DHX58)

Uniprot Id

Q96C10

Target Species

Human

Target Name

DHX58

Target Full Name

ATP-dependent RNA helicase DHX58

Target Function

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. 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.

Target Subcellular Location

Cytoplasm.

Target Protein Families

Helicase family, RLR subfamily

Target Tissue Specificity

Expressed in testis, nerve and spleen. Also expressed in the brain.

Target Synonyms

D11LGP2; D11lgp2e; DEXH (Asp Glu X His) box polypeptide 58; DEXH box polypeptide 58; DHX 58; DHX58; DHX58_HUMAN; LGP 2; LGP2; Ortholog of mouse D11lgp2; Probable ATP dependent helicase LGP2; Probable ATP dependent RNA helicase DHX58; Probable ATP-dependent helicase LGP2; Probable ATP-dependent RNA helicase DHX58; Protein D11Lgp2 homolog; RIG-I-like receptor LGP2; RLR; RNA helicase LGP2

Target Background

Enables double-stranded RNA binding activity; single-stranded RNA binding activity; and zinc ion binding activity. Involved in negative regulation of defense response and negative regulation of type I interferon production. Predicted to be active in cytoplasm.