Protein: Plastin-2 (L-plastin) (LC64P) (Lymphocyte cytosolic protein 1) (LCP-1) (P13796)
Organism: Homo sapiens (Human)
Function: Actin-binding protein. Plays a role in the activation of T-cells in response to costimulation through TCR/CD3 and CD2 or CD28. Modulates the cell surface expression of IL2RA/CD25 and CD69.
Subcellular location: Cytoplasm, cytoskeleton {ECO:0000269|PubMed:16636079}. Cell junction {ECO:0000269|PubMed:17294403}. Cell projection {ECO:0000269|PubMed:16636079}. Cell projection, ruffle membrane {ECO:0000250|UniProtKB:Q61233, ECO:0000269|PubMed:16636079}; Peripheral membrane protein {ECO:0000250|UniProtKB:Q61233}; Cytoplasmic side {ECO:0000250|UniProtKB:Q61233}. Note=Relocalizes to the immunological synapse between peripheral blood T-lymphocytes and antibody-presenting cells in response to costimulation through TCR/CD3 and CD2 or CD28 (PubMed:17294403). Associated with the actin cytoskeleton at membrane ruffles. Relocalizes to actin-rich cell projections upon serine phosphorylation (PubMed:16636079). {ECO:0000250|UniProtKB:Q61233, ECO:0000269|PubMed:16636079, ECO:0000269|PubMed:17294403}.
Sequence: MARGSVSDEEMMELREAFAKVDTDGNGYISFNELNDLFKAACLPLPGYRVREITENLMATGDLDQDGRISFDEFIKIFHGLKSTDVAKTFRKAINKKEGICAIGGTSEQSSVGTQHSYSEEEKYAFVNWINKALENDPDCRHVIPMNPNTNDLFNAVGDGIVLCKMINLSVPDTIDERTINKKKLTPFTIQENLNLALNSASAIGCHVVNIGAEDLKEGKPYLVLGLLWQVIKIGLFADIELSRNEALIALLREGESLEDLMKLSPEELLLRWANYHLENAGCNKIGNFSTDIKDSKAYYHLLEQVAPKGDEEGVPAVVIDMSGLREKDDIQRAECMLQQAERLGCRQFVTATDVVRGNPKLNLAFIANLFNRYPALHKPENQDIDWGALEGETREERTFRNWMNSLGVNPRVNHLYSDLSDALVIFQLYEKIKVPVDWNRVNKPPYPKLGGNMKKLENCNYAVELGKNQAKFSLVGIGGQDLNEGNRTLTLALIWQLMRRYTLNILEEIGGGQKVNDDIIVNWVNETLREAKKSSSISSFKDPKISTSLPVLDLIDAIQPGSINYDLLKTENLNDDEKLNNAKYAISMARKIGARVYALPEDLVEVNPKMVMTVFACLMGKGMKRV
InterPro domains: - IPR036872: CH domain superfamily (homologous_superfamily) [111-621]
- IPR001589: Actinin-type actin-binding domain, conserved site (conserved_site) [208-499]
- IPR011992: EF-hand domain pair (homologous_superfamily) [4-93]
- IPR002048: EF-hand domain (domain) [9-84]
- IPR001715: Calponin homology domain (domain) [120-624]
- IPR018247: EF-Hand 1, calcium-binding site (binding_site) [22-74]
- IPR039959: Fimbrin/Plastin (family) [7-624]
Interaction partners: - Actin, alpha skeletal muscle
- Hematopoietic lineage cell-specific protein
- Grancalcin
- Plastin-3
- Fascin
- Lysosomal-associated transmembrane protein 5
- Actin, cytoplasmic 1
- Signal transducer and activator of transcription 4
- Actin, cytoplasmic 2
- Integrin beta-2
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005198 (structural molecule activity), GO:0005488 (binding), GO:0044877 (protein-containing complex binding), GO:0005200 (structural constituent of cytoskeleton), GO:0005515 (protein binding), GO:0051015 (actin filament binding), GO:0008092 (cytoskeletal protein binding), GO:0003779 (actin binding)
Biological Process (BP): GO:0008150 (biological process), GO:0032502 (developmental process), GO:0048856 (anatomical structure development), GO:0009653 (anatomical structure morphogenesis)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005829 (cytosol), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0071944 (cell periphery), GO:0005737 (cytoplasm), GO:0016020 (membrane), GO:0043229 (intracellular organelle), GO:0005886 (plasma membrane), GO:0043228 (non-membrane-bounded organelle), GO:0043232 (intracellular non-membrane-bounded organelle), GO:0005856 (cytoskeleton), GO:0015629 (actin cytoskeleton)