Title : HN1L/JPT2: A signaling protein that connects NAADP generation to Ca2+ microdomain formation.

Pub. Date : 2021 Mar 23

PMID : 33758062






7 Functional Relationships(s)
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Protein Name
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1 HN1L/JPT2: A signaling protein that connects NAADP generation to Ca2+ microdomain formation. NAADP Jupiter microtubule associated homolog 2 Homo sapiens
2 In our characterization of the molecular machinery underlying NAADP action, we identified an NAADP-binding protein, called hematological and neurological expressed 1-like protein (HN1L) [also known as Jupiter microtubule-associated homolog 2 (JPT2)]. NAADP Jupiter microtubule associated homolog 2 Homo sapiens
3 In our characterization of the molecular machinery underlying NAADP action, we identified an NAADP-binding protein, called hematological and neurological expressed 1-like protein (HN1L) [also known as Jupiter microtubule-associated homolog 2 (JPT2)]. NAADP Jupiter microtubule associated homolog 2 Homo sapiens
4 Photoaffinity labeling demonstrated direct binding of NAADP to recombinant HN1L/JPT2. NAADP Jupiter microtubule associated homolog 2 Homo sapiens
5 T cell receptor/CD3-dependent coprecipitation of HN1L/JPT2 with RYRs and colocalization of these proteins suggest that HN1L/JPT2 connects NAADP formation with the activation of RYR channels within the first seconds of T cell activation. NAADP Jupiter microtubule associated homolog 2 Homo sapiens
6 T cell receptor/CD3-dependent coprecipitation of HN1L/JPT2 with RYRs and colocalization of these proteins suggest that HN1L/JPT2 connects NAADP formation with the activation of RYR channels within the first seconds of T cell activation. NAADP Jupiter microtubule associated homolog 2 Homo sapiens
7 Thus, HN1L/JPT2 enables NAADP to activate Ca2+ release from the endoplasmic reticulum through RYR. NAADP Jupiter microtubule associated homolog 2 Homo sapiens