Recombinant Human GOLPH4/GPP130 protein (GST tag N-Terminus)

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GOLPH4 also known as GPP130 and Golgi integral membrane protein 4 is a protein with a mass of approximately 130 kDa. It plays an important role in the organization and maintenance of the Golgi apparatus structure. GOLPH4 is predominantly found in the cis-Golgi network and it is involved in the cellular sorting and trafficking of proteins and lipids. The protein functions as a tethering factor and it may participate in the transport of cargo from the Golgi to other cellular locations.

Biological function summary

The role of GOLPH4 centers around its involvement in the protein trafficking process within cells. It acts as part of the complex tasked with maintaining Golgi organization which is important for facilitating accurate cargo sorting and delivery. GOLPH4's location and structure enable it to interact with motor proteins and other Golgi matrix proteins aiding in vesicle tethering and fusion processes.

Pathways

GOLPH4 is involved in essential cellular pathways such as the secretion and endocytic trafficking pathways. It interacts with other Golgi-resident proteins like GM130 and giantin which are essential for the movement of materials through the Golgi and to their final destinations. These pathways ensure that proteins and lipids reach their intended areas within the cell or are secreted to the extracellular space which is important for maintaining cellular function and homeostasis.

Disturbances in GOLPH4 function have been associated with conditions such as cancer and neurodegenerative diseases. Aberrant expression or mutations in this protein can lead to misregulation of Golgi functions affecting overall cellular trafficking systems. GOLPH4's interaction with proteins involved in these conditions such as p53 in cancer or tau in neurodegenerative diseases highlights its potential as a target for therapeutic interventions.