CATH Classification

Domain Context

CATH Clusters

Superfamily 3.60.21.10
Functional Family Serine/threonine-protein phosphatase alpha-3 isoform

Enzyme Information

2.7.11.19
Phosphorylase kinase.
based on mapping to UniProt P62161
2 ATP + phosphorylase b = 2 ADP + phosphorylase a.
-!- Requires calmodulin for activity. -!- The enzyme phosphorylates a specific serine residue in each of the subunits of the dimeric phosphorylase b. -!- For muscle phosphorylase but not liver phosphorylase, this is accompanied by a further dimerization to form a tetrameric phosphorylase. -!- The enzyme couples muscle contraction with energy production via glycogenolysis--glycolysis by catalyzing the Ca(2+)-dependent phosphorylation and activation of glycogen phosphorylase b. -!- The gamma subunit of the tetrameric alpha-beta-gamma-delta enzyme is the catalytic subunit. -!- Formerly EC 2.7.1.38.
3.1.3.16
Protein-serine/threonine phosphatase.
based on mapping to UniProt P63329
[a protein]-serine/threonine phosphate + H(2)O = [a protein]- serine/threonine + phosphate.
-!- A group of enzymes removing the serine- or threonine-bound phosphate group from a wide range of phosphoproteins, including a number of enzymes which have been phosphorylated under the action of a kinase (cf. EC 3.1.3.48). -!- The spleen enzyme also acts on phenolic phosphates and phosphamides (cf. EC 3.9.1.1).

UniProtKB Entries (1)

P63100
CANB1_RAT
Rattus norvegicus
Calcineurin subunit B type 1

PDB Structure

PDB 4IL1
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Structural basis of calcineurin activation by calmodulin.
Ye, Q., Feng, Y., Yin, Y., Faucher, F., Currie, M.A., Rahman, M.N., Jin, J., Li, S., Wei, Q., Jia, Z.
Cell Signal