PACSIN3

PACSIN3

Target · Endocytosis regulator

PACSIN3 Protein kinase C and casein kinase substrate in neurons 3 · SDPIII

PACSIN3 (protein kinase C and casein kinase substrate in neurons 3, also known as SDPIII) is a member of the PACSIN family that links the actin cytoskeleton with vesicle formation. It plays a role in endocytosis and regulates the internalisation of plasma membrane proteins. Browse Assay Genie's current range of PACSIN3 research reagents below, or read on for the biology behind the target.

Cytoplasm and cell membraneF-BAR and SH3 domain proteinInhibits TRPV4 channel activity
424 aa
Protein length
~48 kDa
Molecular weight
11p11.2
Gene locus
PACSIN family
Protein family
Target information

What is PACSIN3 (protein kinase C and casein kinase substrate in neurons 3)?

PACSIN3 functions in endocytosis, where it regulates the internalisation of proteins from the plasma membrane. The encoded protein is involved in linking the actin cytoskeleton with vesicle formation. Overexpression of PACSIN3 impairs the internalisation of SLC2A1/GLUT1 and TRPV4 and raises the levels of both proteins at the cell membrane. PACSIN3 also inhibits the calcium channel activity of TRPV4.

The PACSIN3 gene encodes a protein that belongs to the PACSIN family, which takes its name from protein kinase C and casein kinase substrate in neurons. In HGNC, the gene sits in the F-BAR domain containing and SH3 domain containing groups, and it is also listed among the microRNA protein coding host genes. The protein is found in the cytoplasm and at the cell membrane, consistent with a role at the interface between membrane and cytoskeleton. Alternative splicing of the PACSIN3 gene results in multiple transcript variants. A mouse ortholog, Pacsin3, is recognised.

SDPIII is an alternative name for the same gene. Because PACSIN3 influences how much GLUT1 and TRPV4 remains at the cell surface, it is of interest to researchers studying membrane protein trafficking, vesicle formation and the regulation of ion channel activity. Closely related family members such as PACSIN2 are often studied alongside it when comparing the roles of the PACSIN proteins.

Endocytosis and trafficking

PACSIN3 regulates the internalisation of plasma membrane proteins, making it a useful subject for studies of endocytic mechanisms.

Actin and vesicle formation

The protein links the actin cytoskeleton with vesicle formation, which is relevant to work on cytoskeletal control of membrane dynamics.

Ion channel regulation

PACSIN3 inhibits TRPV4 calcium channel activity and increases TRPV4 levels at the cell membrane, informing research on channel regulation.

Glucose transporter biology

Overexpression of PACSIN3 impairs GLUT1 internalisation and increases its membrane levels, relevant to studies of SLC2A1 localisation.

Background

PACSIN3 frequently asked questions

What does PACSIN3 do?

PACSIN3 plays a role in endocytosis and regulates the internalisation of plasma membrane proteins. It is involved in linking the actin cytoskeleton with vesicle formation. It also inhibits TRPV4 calcium channel activity, and overexpression raises GLUT1 and TRPV4 levels at the cell membrane.

Is PACSIN3 also known as SDPIII?

Yes. SDPIII is a listed alias of the PACSIN3 gene, whose full name is protein kinase C and casein kinase substrate in neurons 3. HGNC records no previous names. NCBI notes that alternative splicing produces multiple transcript variants of the gene.

Does PACSIN3 have orthologs in other species?

A mouse ortholog, Pacsin3, is recorded for the human gene. PACSIN3 belongs to the PACSIN family, which includes PACSIN2. Check the datasheet of any product for its validated reactivity.

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Related targets

Other PACSIN family members involved in membrane and cytoskeletal dynamics.

Gene and protein annotations from HGNC, NCBI Gene and UniProt Q9UKS6; product specifications from Assay Genie datasheets.

PACSIN3 Product listing