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- Table of Contents
Facts about Protein phosphatase 1 regulatory subunit 3B.
Suppresses the rate at which PP1 dephosphorylates (inactivates) glycogen phosphorylase and enhances the rate at which it activates glycogen synthase and so limits glycogen breakdown. Its activity is inhibited by PYGL, resulting in inhibition of the glycogen synthase and glycogen phosphorylase phosphatase activities of PP1.
Human | |
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Gene Name: | PPP1R3B |
Uniprot: | Q86XI6 |
Entrez: | 79660 |
Belongs to: |
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No superfamily |
FLJ14005; FLJ34675; GL; Hepatic glycogen-targeting protein phosphatase 1 regulatory subunit GL; PPP1R4PP1 subunit R4; protein phosphatase 1 regulatory subunit 3B; Protein phosphatase 1 regulatory subunit 4; Protein phosphatase 1 subunit GL; protein phosphatase 1, regulatory (inhibitor) subunit 3B
Mass (kDA):
32.695 kDA
Human | |
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Location: | 8p23.1 |
Sequence: | 8; NC_000008.11 (9136255..9151586, complement) |
Highly expressed in the liver and, at lower levels, in skeletal muscle, including in vastus lateralis, gastrocnemius and soleus (at protein level). Highest mRNA levels are observed in skeletal muscle, and only moderate levels in liver and heart. Weak expression in placenta and lung.
PMID: 11872655 by Munro S., et al. Human skeletal muscle expresses a glycogen-targeting subunit of PP1 that is identical to the insulin-sensitive glycogen-targeting subunit G(L) of liver.
PMID: 17555403 by Montori-Grau M., et al. Expression and glycogenic effect of glycogen-targeting protein phosphatase 1 regulatory subunit GL in cultured human muscle.