FLNB Connects cell membrane constituents to the actin cytoskeleton. May promote orthogonal branching of actin filaments and links actin filaments to membrane glycoproteins. Anchors various transmembrane proteins to the actin cytoskeleton. Interaction with FLNA may allow neuroblast migration from the ventricular zone into the cortical plate. Various interactions and localizations of isoforms affect myotube morphology and myogenesis. Isoform 6 accelerates muscle differentiation in vitro. Belongs to the filamin family. Ubiquitous. Isoform 1 and isoform 2 are expressed in placenta, bone marrow, brain, umbilical vein endothelial cells (HUVEC), retina and skeletal muscle. Isoform 1 is predominantly expressed in prostate, uterus, liver, thyroid, stomach, lymph node, small intestine, spleen, skeletal muscle, kidney, placenta, pancreas, heart, lung, platelets, endothelial cells, megakaryocytic and erythroleukemic cell lines. Isoform 2 is predominantly expressed in spinal cord, platelet and Daudi cells. Also expressed in thyroid adenoma, neurofibrillary tangles (NFT), senile plaques in the hippocampus and cerebral cortex in Alzheimer disease (AD). Isoform 3 and isoform 6 are expressed predominantly in lung, heart, skeletal muscle, testis, spleen, thymus and leukocytes. Isoform 4 and isoform 5 are expressed in heart. 9 alternatively spliced human isoforms have been reported. Note: This description may include information from UniProtKB.
Protein type: Actin-binding; Motility/polarity/chemotaxis
Chromosomal Location of Human Ortholog: 3p14.3
Cellular Component:  actin cytoskeleton; brush border; cell cortex; cytosol; integral component of membrane; neuron projection; neuronal cell body; nucleus; phagocytic vesicle; plasma membrane; stress fiber; Z disc
Molecular Function:  actin binding; identical protein binding; protein binding
Biological Process:  actin cytoskeleton organization; cellular response to interferon-gamma; cytoskeletal anchoring at plasma membrane; epithelial cell morphogenesis; keratinocyte development; signal transduction; skeletal muscle tissue development
Disease: Atelosteogenesis, Type I; Atelosteogenesis, Type Iii; Boomerang Dysplasia; Larsen Syndrome; Spondylocarpotarsal Synostosis Syndrome
Reference #:  O75369 (UniProtKB)
Alt. Names/Synonyms: ABP-278; ABP-280; ABP-280 homolog; actin binding protein 278; Actin-binding-like protein; AOI; Beta-filamin; DKFZp686A1668; DKFZp686O033; Fh1; filamin 1 (actin-binding protein-280)-like; filamin B, beta; Filamin homolog 1; Filamin-3; Filamin-B; FLN-B; FLN1L; FLN3; FLNB; LRS1; SCT; TABP; TAP; Thyroid autoantigen; Truncated ABP; Truncated actin-binding protein
Gene Symbols: FLNB
Molecular weight: 278,164 Da
Basal Isoelectric point: 5.47  Predict pI for various phosphorylation states
CST Pathways:  Actin Dynamics
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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Protein Structure Not Found.

Cross-references to other databases:  STRING  |  cBioPortal  |  CCLE  |  Wikipedia  |  Reactome  |  neXtProt  |  Protein Atlas  |  BioGPS  |  Pfam  |  RCSB PDB  |  Phospho3D  |  Phospho.ELM  |  NetworKIN  |  GeneCards  |  UniProtKB  |  Entrez-Gene  |  GenPept  |  Ensembl Gene  |  Ensembl Protein