Protein: Serine/threonine-protein kinase MRCK alpha (EC 2.7.11.1) (CDC42-binding protein kinase alpha) (Myotonic dystrophy kinase-related CDC42-binding kinase alpha) (MRCK alpha) (Myotonic dystrophy protein kinase-like alpha) (O54874)
Organism: Rattus norvegicus (Rat)
Function: Serine/threonine-protein kinase which is an important downstream effector of CDC42 and plays a role in the regulation of cytoskeleton reorganization and cell migration. Regulates actin cytoskeletal reorganization via phosphorylation of PPP1R12A and MYL9/MLC2. In concert with MYO18A and LURAP1, is involved in modulating lamellar actomyosin retrograde flow that is crucial to cell protrusion and migration. Phosphorylates: PPP1R12C, LIMK1 and LIMK2. May play a role in TFRC-mediated iron uptake. In concert with FAM89B/LRAP25 mediates the targeting of LIMK1 to the lamellipodium resulting in its activation and subsequent phosphorylation of CFL1 which is important for lamellipodial F-actin regulation (By similarity). Triggers the formation of an extrusion apical actin ring required for epithelial extrusion of apoptotic cells (By similarity).
Subcellular location: Cytoplasm {ECO:0000269|PubMed:9418861}. Cell projection, lamellipodium {ECO:0000250|UniProtKB:Q3UU96}. Note=Displays a dispersed punctate distribution and concentrates along the cell periphery, especially at the leading edge and cell-cell junction. This concentration is PH-domain dependent (PubMed:9418861). Localizes in the lamellipodium in a FAM89B/LRAP25-dependent manner (By similarity). {ECO:0000250|UniProtKB:Q3UU96, ECO:0000269|PubMed:9418861}.
Interaction partners:
- Cell division control protein 42 homolog
- Leucine rich adaptor protein 1
- Rho-related GTP-binding protein RhoQ
Sequence:
MSGEVRLRQLEQFILDGPAQTNGQCFSVETLLDILICLYDECNNSPLRREKNILEYLEWAKPFTSKVKQMRLHREDFEILKVIGRGAFGEVAVVKLKNADKVFAMKILNKWEMLKRAETACFREERDVLVNGDSKWITTLHYAFQDDNNLYLVMDYYVGGDLLTLLSKFEDRLPEEMARFYLAEMVIAIDSVHQLHYVHRDIKPDNILMDMNGHIRLADFGSCLKLMEDGTVQSSVAVGTPDYISPEILQAMEDGKGRYGPECDWWSLGVCMYEMLYGETPFYAESLVETYGKIMNHKERFQFPTQVTDVSENAKDLIRRLICSREHRLGQNGIEDFKKHPFFSGIDWDNIRNCEAPYIPEVSSPTDTSNFDVDDDCLKNSETMPPPTHTAFSGHHLPFVGFTYTSSCVLSDRSCLRVTAGPTSLDLDVNVQRTLDNNLATEAYERRIKRLEQEKLELTRKLQESTQTVQALQYSTVDGPLTASKDLEIKSLKEEIEKLRKQVAEVNHLEQQLEEANSVRRELDDAFRQIKAFEKQIKTLQQEREELNKELVQASERLKNQSKELKDAHCQRKLAMQEFMEINERLTELHTQKQKLARHVRDKEEEVDLVMQKAESLRQELRRAERAKKELEVHTEALIAEASKDRKLREQSRHYSKQLENELEGLKQKQISYSPGICSIEHQQEITKLKTDLEKKSIFYEEEISKREGIHASEIKNLKKELHDSEGQQLALNKEIMVLKDKLEKTRRESQSEREEFENEFKQQYEREKVLLTEENKKLTSELDKLTSLYESLSLRNQHLEEEVKDLADKKESVAHWEAQITEIIQWVSDEKDARGYLQALASKMTEELEALRNSSLGTRATDMPWKMRRFAKLDMSARLELQSALDAEIRAKQAIQEELNKVKASNIITECKLKDSEKKNLELLSEIEQLIKDTEELRSEKGVEHRDSQHSFLAFLNTPTDALDQFERSPSCTPAGKGRRIADSAPLPVHTPTLRKKGCPASAGFPPKRKTHQFFVKSFTAPTKCHQCTSLMVGLIRQGCSCEVCGFSCHITCVNKAPTTCPVPPEQTKGPLGIDPQKGVGTAYEGHVRIPKPAGVKKGWQRALAVVCDFKLFLYDIAEGKASQPSSVISQVIDMRDEEFSVSSVLASDVIHASRKDIPCIFRVTASQLSAPSDKCSILMLADSETERSKWVGVLSELHKVLKKNKFRDRSVYVPKEAYDSTLPLIKTTQAAAIIDHERVALGNEEGLFVVHVTKDEIIRVGDNKKIHQIELIPSDQLVAVISGRNRHVRLFPMSALDGRETDFYKLAETKGCQTIAAGKVRHGALSCLCVAMKRQVLCYELFQSKTRHRKFKEIQVPCNVQWMAIFSEHLCVGFQSGFLRYPLNGEGSPCNMLHSNDHTLAFITHQPMDAICAVEISNKEYLLCFSSIGIYTDCQGRRSRQQELMWPANPSSCCYNAPYLSIYSENAVDIFDVNSMEWIQTLPLKKVRPLNTEGSLNLLGLETIRLIYFKNKMAEGDELVVPETSDNSRKQMVRNINNKRRYSFRVPEEERMQQRREMLRDPEMRNKLISNPTNFNHIAHMGPGDGIQILKDLPMNPRPQESRTVFSGSVSIPSITKSRPEPGRSMSASSGLSARSSAQNGSALKREFSGGSYNTKRQPMPSPSEGSLSSGGVDQGSDAPVRDYDGEDSDSPRHSTASNSSNLSSPPSPVSPRKTKSLSLESTDRGSWDP