SORBS1

SORBS1

Target · Adaptor protein

SORBS1 Sorbin and SH3 domain containing 1 · ponsin

SORBS1 (sorbin and SH3 domain containing 1) is a CBL-associated adaptor protein that links CBL to the insulin receptor and supports insulin-stimulated glucose transport. It is also known as CAP, ponsin, SH3D5, sh3p12 and KIAA1296. Browse Assay Genie's current range of SORBS1 research reagents below, or read on for the biology behind the target.

Adherens junctions and cytoskeletonCBL-associated adaptorInsulin signalling role
1292 aa
Protein length
~143 kDa
Molecular weight
10q24.1
Gene locus
SH3 domain
Protein group
Target information

What is SORBS1 (sorbin and SH3 domain containing 1)?

SORBS1 plays a role in the tyrosine phosphorylation of CBL by linking CBL to the insulin receptor. This adaptor function places the protein within insulin signalling, and it is required for insulin-stimulated glucose transport. SORBS1 is also involved in the formation of actin stress fibres and focal adhesions, connecting signalling events to cytoskeletal organisation.

The SORBS1 gene encodes a CBL-associated protein, and the SORBS1 protein is assigned by HGNC to the SH3 domain containing gene group. UniProt records a broad subcellular distribution: adherens junctions, the cell membrane, the cytoskeleton, focal adhesions, the nucleus and the nuclear matrix. Alternative splicing results in multiple transcript variants, so researchers working with SORBS1 antibody or SORBS1 ELISA kit reagents should consider which variants are relevant to their question.

The protein was previously named SH3-domain protein 5 (ponsin), which explains the aliases SH3D5 and ponsin still found in the literature, alongside CAP. Mutations in the SORBS1 gene may be associated with human disorders of insulin resistance, according to the NCBI Gene summary. Mouse and rat both carry an orthologous gene named Sorbs1, which allows the biology to be studied in common rodent models.

Insulin signalling

SORBS1 links CBL to the insulin receptor, making it a focus for studies of how insulin signals are transmitted.

Glucose transport

The protein is required for insulin-stimulated glucose transport, so it is relevant to research on cellular glucose uptake.

Insulin resistance research

Mutations in the gene may be associated with human disorders of insulin resistance, supporting genetic and mechanistic investigation.

Cytoskeleton and adhesion

SORBS1 is involved in forming actin stress fibres and focal adhesions, connecting it to cytoskeletal and cell junction biology.

Background

SORBS1 frequently asked questions

What does SORBS1 do?

SORBS1 links CBL to the insulin receptor, which contributes to tyrosine phosphorylation of CBL. It is required for insulin-stimulated glucose transport and is involved in forming actin stress fibres and focal adhesions. Check the datasheet of any product for its validated reactivity.

What other names does SORBS1 go by?

SORBS1 is also called CAP, ponsin, SH3D5, sh3p12, KIAA1296 and FLJ12406. The former HGNC name was SH3-domain protein 5 (ponsin). Alternative splicing produces multiple transcript variants of the gene.

Is SORBS1 linked to disease and conserved in rodents?

The NCBI Gene summary notes that mutations in SORBS1 may be associated with human disorders of insulin resistance. Orthologous genes named Sorbs1 are annotated in both mouse and rat, so rodent models can be used to study its function.

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Related targets

Insulin signalling components, CBL pathway partners and other SH3 domain adaptors with products at Assay Genie.

Gene and protein annotations from HGNC, NCBI Gene and UniProt Q9BX66; product specifications from Assay Genie datasheets.

SORBS1 Product listing