UniProtKB - P61016 (PPLA_RAT)
Protein
Cardiac phospholamban
Gene
Pln
Organism
Rattus norvegicus (Rat)
Status
Functioni
Reversibly inhibits the activity of ATP2A2 in cardiac sarcoplasmic reticulum by decreasing the apparent affinity of the ATPase for Ca2+. 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 (By similarity).By similarity
GO - Molecular functioni
- ATPase inhibitor activity Source: RGD
- identical protein binding Source: RGD
- protein homodimerization activity Source: UniProtKB
GO - Biological processi
- adenylate cyclase-activating adrenergic receptor signaling pathway involved in heart process Source: RGD
- calcium ion transport Source: RGD
- cardiac muscle tissue development Source: RGD
- cellular calcium ion homeostasis Source: RGD
- negative regulation of ATPase activity Source: RGD
- negative regulation of ATPase-coupled calcium transmembrane transporter activity Source: UniProtKB
- negative regulation of calcium ion binding Source: RGD
- negative regulation of calcium ion import into sarcoplasmic reticulum Source: UniProtKB
- negative regulation of calcium ion transmembrane transporter activity Source: RGD
- negative regulation of calcium ion transport Source: RGD
- negative regulation of heart contraction Source: RGD
- negative regulation of heart rate Source: RGD
- Notch signaling pathway Source: RGD
- regulation of ATPase-coupled calcium transmembrane transporter activity Source: RGD
- regulation of calcium ion import Source: RGD
- regulation of calcium ion transport Source: UniProtKB
- regulation of cardiac muscle cell contraction Source: RGD
- regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion Source: RGD
- regulation of heart contraction Source: RGD
- regulation of relaxation of muscle Source: RGD
- regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum Source: RGD
- regulation of ryanodine-sensitive calcium-release channel activity Source: RGD
- regulation of the force of heart contraction Source: RGD
- regulation of the force of heart contraction by cardiac conduction Source: RGD
- response to insulin Source: RGD
- response to testosterone Source: RGD
- response to zinc ion Source: RGD
Enzyme and pathway databases
Reactomei | R-RNO-5578775, Ion homeostasis R-RNO-936837, Ion transport by P-type ATPases |
Names & Taxonomyi
Protein namesi | Recommended name: Cardiac phospholambanCuratedShort name: PLB |
Gene namesi | Name:PlnImported |
Organismi | Rattus norvegicus (Rat) |
Taxonomic identifieri | 10116 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Myomorpha › Muroidea › Muridae › Murinae › Rattus |
Proteomesi |
|
Organism-specific databases
RGDi | 619894, Pln |
Subcellular locationi
Mitochondrion
- Mitochondrion membrane By similarity; Single-pass membrane protein Sequence analysis
Endoplasmic reticulum
- Endoplasmic reticulum membrane By similarity; Single-pass membrane protein Sequence analysis
Other locations
- Sarcoplasmic reticulum membrane By similarity; Single-pass membrane protein Sequence analysis
- Membrane By similarity; Single-pass membrane protein Sequence analysis
Note: Colocalizes with HAX1 at the endoplasmic reticulum. Colocalizes with DMPK a the sarcoplasmic reticulum.By similarity
Endoplasmic reticulum
- endoplasmic reticulum membrane Source: RGD
- sarcoplasmic reticulum Source: RGD
- sarcoplasmic reticulum membrane Source: UniProtKB
Mitochondrion
- mitochondrial membrane Source: UniProtKB-SubCell
Other locations
- calcium ion-transporting ATPase complex Source: RGD
- membrane Source: RGD
- protein-containing complex Source: RGD
- vesicle Source: RGD
Topology
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Topological domaini | 1 – 31 | CytoplasmicSequence analysisAdd BLAST | 31 | |
Transmembranei | 32 – 52 | HelicalSequence analysisAdd BLAST | 21 |
Keywords - Cellular componenti
Endoplasmic reticulum, Membrane, Mitochondrion, Sarcoplasmic reticulumPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000191248 | 1 – 52 | Cardiac phospholambanAdd BLAST | 52 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Modified residuei | 1 | N-acetylmethionineBy similarity | 1 | |
Modified residuei | 16 | PhosphoserineCombined sources | 1 | |
Modified residuei | 17 | PhosphothreonineCombined sources | 1 | |
Lipidationi | 36 | S-palmitoyl cysteineBy similarity | 1 |
Post-translational modificationi
Phosphorylation by PKA abolishes the inhibition of ATP2A2-mediated calcium uptake. Phosphorylated at Thr-17 by CaMK2, and in response to beta-adrenergic stimulation. Phosphorylation by DMPK may stimulate sarcoplasmic reticulum calcium uptake in cardiomyocytes (By similarity).By similarity
Palmitoylated by ZDHHC16, promoting formation of the homopentamer.By similarity
Keywords - PTMi
Acetylation, Lipoprotein, Palmitate, PhosphoproteinProteomic databases
PaxDbi | P61016 |
PRIDEi | P61016 |
PTM databases
iPTMneti | P61016 |
PhosphoSitePlusi | P61016 |
Expressioni
Tissue specificityi
Heart.1 Publication
Gene expression databases
Bgeei | ENSRNOG00000000413, Expressed in heart and 22 other tissues |
Genevisiblei | P61016, RN |
Interactioni
Subunit structurei
Homopentamer.
Interacts with HAX1. Interact with ATP2A2; the inhibition decreases ATP2A2 Ca2+ affinity.
Interacts with VMP1; VMP1 competes with PLN and SLN to prevent them from forming an inhibitory complex with ATP2A2.
By similarityBinary interactionsi
P61016
With | #Exp. | IntAct |
---|---|---|
Akap7 [Q6JP77] | 6 | EBI-7620725,EBI-6096191 |
GO - Molecular functioni
- identical protein binding Source: RGD
- protein homodimerization activity Source: UniProtKB
Protein-protein interaction databases
BioGRIDi | 249188, 2 interactors |
IntActi | P61016, 1 interactor |
MINTi | P61016 |
STRINGi | 10116.ENSRNOP00000000469 |
Family & Domainsi
Sequence similaritiesi
Belongs to the phospholamban family.Curated
Keywords - Domaini
Transmembrane, Transmembrane helixPhylogenomic databases
eggNOGi | ENOG502S97F, Eukaryota |
GeneTreei | ENSGT00390000002403 |
HOGENOMi | CLU_214576_0_0_1 |
InParanoidi | P61016 |
OMAi | MEVPQQA |
TreeFami | TF330750 |
Family and domain databases
CDDi | cd20250, Phospholamban, 1 hit |
InterProi | View protein in InterPro IPR005984, PLB |
PANTHERi | PTHR21194, PTHR21194, 1 hit |
Pfami | View protein in Pfam PF04272, Phospholamban, 1 hit |
PIRSFi | PIRSF001665, PLB, 1 hit |
TIGRFAMsi | TIGR01294, P_lamban, 1 hit |
i Sequence
Sequence statusi: Complete.
P61016-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MEKVQYLTRS AIRRASTIEM PQQARQNLQN LFINFCLILI CLLLICIIVM
LL
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | L03382 Genomic DNA Translation: AAA41849.1 X71068 mRNA Translation: CAA50394.1 S95849 mRNA Translation: AAN86727.1 S95853 mRNA Translation: AAB21903.1 |
PIRi | S37638 |
RefSeqi | NP_073198.1, NM_022707.2 |
Genome annotation databases
Ensembli | ENSRNOT00000000469; ENSRNOP00000000469; ENSRNOG00000000413 |
GeneIDi | 64672 |
KEGGi | rno:64672 |
UCSCi | RGD:619894, rat |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | L03382 Genomic DNA Translation: AAA41849.1 X71068 mRNA Translation: CAA50394.1 S95849 mRNA Translation: AAN86727.1 S95853 mRNA Translation: AAB21903.1 |
PIRi | S37638 |
RefSeqi | NP_073198.1, NM_022707.2 |
3D structure databases
BMRBi | P61016 |
SMRi | P61016 |
ModBasei | Search... |
Protein-protein interaction databases
BioGRIDi | 249188, 2 interactors |
IntActi | P61016, 1 interactor |
MINTi | P61016 |
STRINGi | 10116.ENSRNOP00000000469 |
PTM databases
iPTMneti | P61016 |
PhosphoSitePlusi | P61016 |
Proteomic databases
PaxDbi | P61016 |
PRIDEi | P61016 |
Genome annotation databases
Ensembli | ENSRNOT00000000469; ENSRNOP00000000469; ENSRNOG00000000413 |
GeneIDi | 64672 |
KEGGi | rno:64672 |
UCSCi | RGD:619894, rat |
Organism-specific databases
CTDi | 5350 |
RGDi | 619894, Pln |
Phylogenomic databases
eggNOGi | ENOG502S97F, Eukaryota |
GeneTreei | ENSGT00390000002403 |
HOGENOMi | CLU_214576_0_0_1 |
InParanoidi | P61016 |
OMAi | MEVPQQA |
TreeFami | TF330750 |
Enzyme and pathway databases
Reactomei | R-RNO-5578775, Ion homeostasis R-RNO-936837, Ion transport by P-type ATPases |
Miscellaneous databases
PROi | PR:P61016 |
Gene expression databases
Bgeei | ENSRNOG00000000413, Expressed in heart and 22 other tissues |
Genevisiblei | P61016, RN |
Family and domain databases
CDDi | cd20250, Phospholamban, 1 hit |
InterProi | View protein in InterPro IPR005984, PLB |
PANTHERi | PTHR21194, PTHR21194, 1 hit |
Pfami | View protein in Pfam PF04272, Phospholamban, 1 hit |
PIRSFi | PIRSF001665, PLB, 1 hit |
TIGRFAMsi | TIGR01294, P_lamban, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | PPLA_RAT | |
Accessioni | P61016Primary (citable) accession number: P61016 Secondary accession number(s): P20006 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | April 26, 2004 |
Last sequence update: | April 26, 2004 | |
Last modified: | April 7, 2021 | |
This is version 126 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
Reference proteomeDocuments
- SIMILARITY comments
Index of protein domains and families