Ankyrin-3 - Q12955 (ANK3_HUMAN)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

In skeletal muscle, required for costamere localization of DMD and betaDAG1 (By similarity). Membrane-cytoskeleton linker. May participate in the maintenance/targeting of ion channels and cell adhesion molecules at the nodes of Ranvier and axonal initial segments. Regulates KCNA1 channel activity in function of dietary Mg(2+) levels, and thereby contributes to the regulation of renal Mg(2+) reabsorption (PubMed:23903368). UniProt
Pathway Maps
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Subunit Structure
Directly interacts with DMD and betaDAG1. This interaction does not interfere with binding between DMD and betaDAG1. It is also required for DMD and betaDAG1 retention at costameres (By similarity). Interacts (via N-terminal ANK repeats) with SCHIP1 isoform 5 (via C-terminus); this interaction is required for the localization at axon initial segments (AISs) and nodes of Ranvier (NRs) (By similarity). May be a constituent of a NFASC/NRCAM/ankyrin G complex. Interacts with RHBG (PubMed:15611082). Interacts with PLEC and FLNC (PubMed:21223964). Interacts with KCNA1; this inhibits channel activity (PubMed:23903368). Interacts (via ANK repeats) with IQCJ-SCHIP1; required for IQCJ-SCHIP1 localization at axon initial segments (AIS) and nodes of Ranvier (PubMed:25950943). Interacts with SCHIP1 (PubMed:25950943). Interacts with SCN5A (PubMed:15579534). UniProt
The tandem configuration of the two ZU5 and the UPA domains forms a structural supramodule termed ZZU. ZU5-1 mediates interaction with beta-spectrin, and the ZU5-1/UPA interface is required for ankyrin's function other than binding to spectrin (By similarity). UniProt
  • Isoforms: 5 , currently showing only the 'canonical' sequence.
This protein in other organisms (by gene name):
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  • Blue: probably ordered region.
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Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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