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Metaxin-3 (MTX3)

Target: MTX3
Molecular classification: Other (Metaxin-3 is a membrane-associated protein, part of protein complexes in mitochondria, but is not classified within typical therapeutic target families such as receptor, transporter, enzyme, ion channel, etc.[2][6]), Membrane protein, Mitochondrial protein

Overview

Metaxin-3 is a mitochondrial membrane-associated protein encoded by the MTX3 gene in humans (HGNC: 24812; NCBI Gene: 345778)[2][5][6]. It is predicted to function in the import and organization of proteins within mitochondria, being part of the mitochondrial intermembrane space bridging (MIB) complex and associated with the sorting and assembly machinery (SAM) complex[2][6]. MTX3 is related to other metaxin family proteins (MTX1, MTX2) and is conserved across vertebrates[1][2]. While genetic studies note disease associations (including rare syndromes), Metaxin-3 is not currently a recognized therapeutic target for drugs or clinical interventions. Its principal role appears structural and organizational within mitochondrial biology, with no established functions in signal transduction, cell cycle, apoptosis, or other major pathways targeted in clinical pharmacology[2][6].

Other names: Metaxin 3MTX3Metaxin-3mtx3

Biological functions

Mitochondrion organization[2][3]Protein import into mitochondrion[2][6]Component of mitochondrial intermembrane space bridging (MIB) complex[6]Associated with sorting and assembly machinery (SAM) complex[3]Structural role in mitochondrial membrane[2][6]

Disease associations

Other (MTX3 is associated with some Mendelian syndromes, including Transient Arthritis and Loeys-Dietz Syndrome 1, though there is currently limited evidence for its direct involvement or biomarker status in major disease categories like cancer, inflammation, infection, etc.)[2]Transient arthritis[2]Loeys-Dietz Syndrome 1[2]Genetic syndromes (adjacent chromosomal location to disease-associated genes such as THBS4[1])

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