Proteomics

Dataset Information

0

Proteomic identification of MAVS carboxylation site–associated proteins


ABSTRACT: To identify proteins that differentially interact with carboxylated and non-carboxylated MAVS, we overexpressed Flag-tagged WT or 4A mutant (D53A, E70A, E80A, and D83A) forms of hMAVS in 293T cells and analyzed the interactors using immunoprecipitation followed by mass spectrometry (MS). Cell lysates were subjected to immunoprecipitation with anti-FLAG antibodies, and the immunoprecipitated proteins were subsequently analyzed by LC-MS/MS.

ORGANISM(S): Homo Sapiens (human)

SUBMITTER: Tomohiko Okazaki 

PROVIDER: PXD058403 | JPOST Repository | Wed Jul 23 00:00:00 BST 2025

REPOSITORIES: jPOST

Dataset's files

Source:
Action DRS
11a2683-6_33-6_5_TransitionResult.xlsx Xlsx
11a2683-6_33-6_5_TransitionResult_Summary.xlsx Xlsx
MAVS_4A_11a2633.wiff Wiff
MAVS_4A_11a2634.wiff Wiff
MAVS_4A_11a2635.wiff Wiff
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Publications


Mitochondrial antiviral signaling protein (MAVS) is an adaptor involved in antiviral immunity, but its regulation is not fully understood. We identified carboxylation of MAVS by vitamin K (VK)-dependent γ-glutamyl carboxylase (GGCX), which was unexpected owing to the reported membrane topology of GGCX. We found that GGCX could undergo topology inversion to carboxylate MAVS within the cytoplasm. This carboxylation enhanced the ability of MAVS to induce type I interferons while suppressing the ind  ...[more]

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