Tbio PLN Cardiac phospholamban

Protein Summary

Description

Reversibly inhibits the activity of ATP2A2 in cardiac sarcoplasmic reticulum by decreasing the apparent affinity of the ATPase for Ca(2+). Modulates the contractility of the heart muscle in response to physiological stimuli via its effects on ATP2A2. Modulates calcium re-uptake during muscle relaxation and plays an important role in calcium homeostasis in the heart muscle. The degree of ATP2A2 inhibition depends on the oligomeric state of PLN. ATP2A2 inhibition is alleviated by PLN phosphorylation. The protein encoded by this gene is found as a pentamer and is a major substrate for the cAMP-dependent protein kinase in cardiac muscle. The encoded protein is an inhibitor of cardiac muscle sarcoplasmic reticulum Ca(2+)-ATPase in the unphosphorylated state, but inhibition is relieved upon phosphorylation of the protein. The subsequent activation of the Ca(2+) pump leads to enhanced muscle relaxation rates, thereby contributing to the inotropic response elicited in heart by beta-agonists. The encoded protein is a key regulator of cardiac diastolic function. Mutations in this gene are a cause of inherited human dilated cardiomyopathy with refractory congestive heart failure, and also familial hypertrophic cardiomyopathy. [provided by RefSeq, Apr 2016]

Uniprot Accession IDs

• P26678
• PLB

Gene Name

• PLN

Ensembl ID

• ENST00000357525
• ENSP00000350132
• ENSG00000198523

Symbol

• PLB
• PLB
• CMD1P
• CMH18

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
biological process	0.96
biological term	0.83
cell type or tissue	0.78
PubMedID	0.7
cellular component	0.68

Protein Classes

No PANTHER Classes or DTO Classes found

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 155.32   (req: < 5)

Gene RIFs: 94   (req: <= 3)

Antibodies: 463   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 155.32   (req: >= 5)

Gene RIFs: 94   (req: > 3)

Antibodies: 463   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 35

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligand: 0

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 0