Tetraethylammonium chloride (TEA), non-selective K+ channel blocker

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

NESP55 also known as neuroendocrine secretory protein of 55 kDa functions as a secretory protein in the central nervous system and various neuroendocrine tissues. It is highly expressed in the adrenal medulla pituitary gland and certain brain regions. NESP55 forms a part of the granin protein family linked with dense core vesicles and influences hormonal release functions. While its exact mechanisms remain under investigation many studies focus on its interaction with various vesicular components.

Biological function summary

NESP55 interacts with cellular processes that influence neuroendocrine secretion and signal modulation. This protein is essential for the biogenesis of secretory granules participating in storage and regulated release of hormones and neuropeptides. It works in balance with other vesicular proteins like chromogranin A and B. Although it is not part of a major protein complex itself it collaborates closely with these secretory granule proteins to modulate vesicular content release.

Pathways

NESP55 plays important roles in neurotransmitter and hormonal pathways. It contributes significantly to the catecholamine pathway impacting dopamine processing and influencing behavior and stress response. Its interactions with proteins such as synaptophysin and vesicular monoamine transporter 1 facilitate vesicular trafficking and neurotransmitter uptake. This involvement in pathways highlights its role in managing cellular stress and emotional behavioral responses.

NESP55 has associations with mood disorders and neuroendocrine tumors. Altered expression levels have been linked with depression where changes in catecholamine metabolism play a critical part. Its connection to chromogranin proteins places NESP55 in the context of neuroendocrine tumors influencing tumor growth and hormone production. Research into these associations might uncover new therapeutic targets to modulate its activity in pathological conditions.