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FLASH GENE
Symbol FLNB contributors: mct - updated : 02-06-2021
HGNC name filamin B, beta
HGNC id 3755
PROTEIN
PHYSICAL PROPERTIES
STRUCTURE
motifs/domains
  • N-terminal actin-binding domain (ABD)
  • C-terminal 24th repeat is essential for filamin dimerization
  • HOMOLOGY
    Homologene
    FAMILY
  • filamin family
  • CATEGORY structural protein
    SUBCELLULAR LOCALIZATION     plasma membrane
        intracellular
    intracellular,cytoplasm,cytosolic
    intracellular,cytoplasm,cytoskeleton
    intracellular,nucleus
    basic FUNCTION
  • dimeric actin cross-linking phosphoprotein
  • playing a role in vertebral segmentation, joint formation and endochondral ossification, and regulate endochondral ossification
  • novel function of filamin B as a molecular scaffold in the JNK signaling pathway for type I IFN-induced apoptosis
  • regulates the cytoskeletal network by cross-linking actin, linking cell membrane to the cytoskeleton and regulating intracellular signaling pathways responsible for skeletal development
  • functions as a scaffold that links between activated RAC1 and a c-Jun NH(2)-terminal kinase (JNK) cascade module for mediating type I IFN signaling
  • regulate intracellular signaling pathways associated with skeletal development
  • plays a pivotal role in vertebral patterning and skeletal morphogenesis and is a novel gene involved in regulating human stature
  • inhibits RUNX2 activity, at least in part, through the SMAD3 pathway
  • crucial role for FLNB in endothelial cell migration and in the angiogenic process in adult endothelial cells
  • key role in endothelial cell motility, exerted through its function as a scaffolding protein connecting KDR, VAV2, and RAC1 proteins
  • is a large dimeric actin-binding protein which crosslinks actin cytoskeleton filaments into a dynamic structure
  • might play an important role, not only in skeletal development, but also in regulating tumorigenesis
  • may play an important regulatory role in cervical cancer cell apoptosis via regulation of transcription and alternative splicing, which provide insight for the current understanding of the mechanisms of FLNB&
  • 8209;mediated gene regulation
    CELLULAR PROCESS
    PHYSIOLOGICAL PROCESS
    PATHWAY
    metabolism
    signaling
    a component
  • heterodimer FLNA/FLNB
  • INTERACTION
    DNA
    RNA
    small molecule
    protein
  • FLNA to allow for proper neuronal migration
  • interactions with the extracellular matrix and integrin receptors are necessary components for chondrocyte survival and differentiation
  • binds SMAD3, which is known to interact with RUNX2
  • ASB2 targets the actin-binding proteins filamin A and B for proteasomal degradation
  • interactions between FLNB and transmembrane or signalling proteins, mediated at least in part by immunoglobulin domains 19 to 21 are important for both cell spreading and initiation of migration
  • interacting with ICAM1 (filamin B is required for the lateral mobility of ICAM1 and for ICAM1-induced transmigration of leukocytes)
  • FLNA, FLNB but not Janus kinases are substrates of the ASB2 cullin-ring E3 ubiquitin ligase in hematopoietic cells
  • VEGFA and PKC promote degradation-independent protein ubiquitination of FLNB to control intracellular trafficking of HDAC7
  • FLNB and FMN1 physically interact, are co-expressed in chondrocytes in the growth plate and share overlapping expression in the cell cytoplasm and nucleus
  • FLNB and FMN1 regulate chondrocyte proliferation, and FLNB may regulate FMN1 function at the hypertrophic-to-ossification border, thereby explaining the overall delay in ossification
  • ASB2, by driving degradation of filamin A (FLNA) and filamin B (FLNB), is responsible for the difference in FLNA and FLNB abundance in the different spleen Conventional dendritic cells (cDCs) subsets
  • FLNA loss leads to diminished expression of Beta1-integrin, whereas FLNB loss promotes integrin expression
  • QKI and RBFOX1 coordinately regulated the splicing and function of the actin-binding protein FLNB, which plays a causal role in the regulation of EMT
  • cell & other
    REGULATION
    ASSOCIATED DISORDERS
    corresponding disease(s) SCTS , LRS1 , ATSG1 , ATSG3
    Susceptibility to variation of stature
    Variant & Polymorphism SNP three SNPs were significantly associated with human stature
    Candidate gene
    Marker
    Therapy target
    ANIMAL & CELL MODELS