Protein: Capping protein, Arp2/3 and myosin-I linker protein 2 (Capping protein regulator and myosin 1 linker 2) (F-actin-uncapping protein RLTPR) (Leucine-rich repeat-containing protein 16C) (RGD, leucine-rich repeat, tropomodulin and proline-rich-containing protein) (Q3V3V9)
Organism: Mus musculus (Mouse)
Function: Cell membrane-cytoskeleton-associated protein that plays a role in the regulation of actin polymerization at the barbed end of actin filaments. Prevents F-actin heterodimeric capping protein (CP) activity at the leading edges of migrating cells, and hence generates uncapped barbed ends and enhances actin polymerization. Plays a role in cell protrusion formations; involved in cell polarity, lamellipodial assembly, membrane ruffling and macropinosome formations. Involved as well in cell migration and invadopodia formation during wound healing (By similarity). Required for CD28-mediated stimulation of NF-kappa-B signaling, involved in naive T cells activation, maturation into T memory cells, and differentiation into T helper cells. Required for CD28-mediated differentiation of T regulatory cells (By similarity).
Subcellular location: Cytoplasm {ECO:0000250|UniProtKB:Q6F5E8}. Cytoplasm, cytoskeleton {ECO:0000250|UniProtKB:Q6F5E8}. Cell membrane {ECO:0000250|UniProtKB:Q6F5E8}; Peripheral membrane protein {ECO:0000250|UniProtKB:Q6F5E8}; Cytoplasmic side {ECO:0000250|UniProtKB:Q6F5E8}. Cell projection, lamellipodium {ECO:0000250|UniProtKB:Q6F5E8}. Cell projection, ruffle {ECO:0000250|UniProtKB:Q6F5E8}. Note=Colocalizes to dynamic vimentin filaments both in the central cytoplasm and at leading edges of migrating cells. Colocalizes with F-actin, Arp2/3 complex and cortactin to leading edge lamellipodia, ruffles and macropinosomes of migrating cells. {ECO:0000250|UniProtKB:Q6F5E8}.
Interaction partners:
- F-actin-capping protein subunit alpha-1
- F-actin-capping protein subunit beta
- F-actin-capping protein subunit alpha-2
- F-actin-capping protein subunit alpha
- Myotrophin
- Alpha-adducin
- Beta-adducin
- F-actin-capping protein subunit alpha-3
Sequence:
MAQTPDDISCELRGEITRFLWPKEAELLLKTWLPQEGAEQSHILALLRWRAYLLHTCLPLRVDCTFSYLEVQAMALQETPPRVTFELESLPELVLEFPCVAALEQLAQHVAAAIKKVFPRSTLGKLFRKPTPSSLLARLERSHPLESTIPSSPCGGFLETYEALCDYNGFPFREEIQWDVDTIYHRQGCRHFCLGDFSHFGSRDLALSVAALSYNLWFRRLSCEDMKLSLEVSEQILHMTSQSSYLEELVLEACGLRGDFVRRLAQALAGHFNSGLRELSLSGNLLDDRGMRALGRALATNATFDSTLTHLDLSGNPGALGPSQDSGGLYTFLSRPNVLAYLNLAGTDATLGTLFTALAGGCCSSLTHLEASRNIFSRMKSQAAPAALQRFLGGTRMLRHLGLAGCKLPPEALRALLEGLALNTQIHDLHLDLSACELRSVGAQVIQDLVCDAGALSSLDLSDNGFGSDMVTLVLAIGRSRSLKHVALGRNFNVRCKETLDDVLHRIAQLMQDDDCPLQSLSVAESRLKQGASILIRALGTNPKLTALDISGNAIGDAGAKMLAKALRVNTRLRSVIWDRNNTSALGLLDVAQALEQNHSLKSMPLPLNDVTQAHRSRPELTTRAVHQIQACLWRNNQVDSTSDLKPCLQPLGLISDHSEQEVNELCQSVQEHMELLGCGAGPQGEVAVHQAEDAIQNANFSLSILPILYEAGRSPSHHWQLQQKLESLLGQVGEICRQDIQDFTQTTLDTTRSLCPQMLQTPGWRKQLEGVLVGSGGLPELLPEHLLQDAFSRLRDMRLSITGTLAESIVAQALAGLHAARDRLVERLTQQAPVTMAPAVPPLGGNELSPLETGGLEELFFPTEKEEEREKVLLRKRNGTPSWQLRGKMQSRRLGRLHAVAEKHWAAGPRDTPASAVYQRVDVCVGWVPPALLQEGNGLTARVDEGVEEFFSKRLIQQDHFWAPEEDPATEGGATPVPRTLRKKLGTLFAFKKPRSTRGPRPDLETSPGAAARARKSTLGDLLRPPARPGRGEEPGGAEGGTSSPDPARRNRPRYTRESKAYSMILLPAEEEAAVGTRPDKRRPLERGDTELAPSFEQRVQVMLQRIGVSRASGGAESKRKQSKDGEIKKAGSDGDIMDSSTETPPISIKSRTHSVSADPSCRPGPGGQGPESATWKTLGQQLNAELRGRGWGQQDGPGPPSPCPSPSPRRTSPAPDILSLPEDPCLGPRNEERPLRLQRSPVLKRRPKLEAPPSPSLGSGLGSKPLPPYPTEPSSPERSPPSPATDQRGGGPNP