ECOP

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ECOP, also known as VOPP1 or GASP, is a human gene that makes a protein found inside cells on vesicle membranes. It is often amplified together with the EGFR gene in cancers, which means cells can have higher levels of ECOP than normal.

ECOP acts as a regulator of cell signaling, mainly by influencing the NF-kappaB pathway. It helps promote cell survival and can make cancer cells less likely to undergo programmed cell death (apoptosis). The protein is thought to function as an adaptor or scaffold in cytoplasmic signaling and is localized to vesicles rather than the nucleus. Its activity in this pathway is IkappaBalpha-dependent, meaning it works through the normal inhibitors that control NF-kappaB.

In cancer, high ECOP expression has been linked to tumor growth and aggressiveness. It is frequently found at higher levels in glioblastoma, gastric cancer, head and neck squamous cell carcinomas, and non-small cell lung cancer, among others. Because ECOP helps cancer cells survive and resist some treatments, it is studied as a potential biomarker for prognosis and as a possible target for therapy. While ECOP is clearly associated with cancer, researchers continue to explore its exact roles, including a possible part in receptor trafficking within cells.

Gene and protein details: ECOP is located on chromosome 7p11.2 and comprises about 15 exons, encoding a protein of roughly 42–43 kDa. The protein localizes mainly to cytoplasmic vesicle membranes and is expressed in various normal tissues, with higher activity in certain glands, the brain, and immune-related tissues. In the context of cancer, its overexpression contributes to sustained cell proliferation, inflammation, and resistance to cell death, supporting tumor development and progression.