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Coiled-coil domain-containing protein 90B, mitochondrial (CCDC90B)

Target
CCDC90B
Molecular classification
Other (membrane-anchored coiled-coil protein), Scaffold protein (by analogy and structural studies), Mitochondrial protein
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Overview

Coiled-coil domain-containing protein 90B, mitochondrial (CCDC90B) is a membrane-anchored coiled-coil protein localized to the mitochondrion and characterized by a head–neck–stalk–anchor architecture with a conserved N-terminal head domain, alpha-helical coiled-coil region, and a mitochondrial targeting sequence[1][3][5]. The protein directly interacts with the mitochondrial calcium uniporter (MCU) complex, implicating it in regulation of mitochondrial calcium uptake and bioenergetics, potentially serving scaffold and structural roles for assembly and function of the uniporter[3][5]. CCDC90B has been identified as a hub gene with prognostic significance in lung cancer and is linked to genetic syndromes, yet there are currently no drugs targeting it directly, nor is it considered a therapeutic target like a receptor or enzyme[3][6]. Its biological function appears to be restricted to mitochondrial processes, and evidence for broader cellular or disease involvement remains emerging[3][6].

Other names
CCDC90BCoiled-coil domain containing 90BCoiled-coil domain-containing protein 90B, mitochondrialMDS011MDS025CUA003
02

Mechanism of action

Not applicable; not a known direct drug target

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Biological functions

Mitochondrial calcium homeostasis (predicted interaction with mitochondrial calcium uniporter complex)Regulation of mitochondrial bioenergetics (by analogy to MCUR1)Scaffold function for protein complex assembly (likely role based on paralog data)Modulation of calcium-dependent metabolic processesPossible roles in cell signaling and survival
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Disease associations

Cancer (identified as prognostic gene in lung adenocarcinoma)Oculoauricular syndrome (GeneCards association)Osteochondrosis (GeneCards association)Other (potentially broader roles in disease biology based on hub gene status)
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Biomarkers

Prognostic biomarker in lung adenocarcinoma (expression/alteration-associated)None established for patient selection/monitoring

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