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ESPN

Gene
Espn
Protein
Espin
Organism
Mus musculus
Length
871 amino acids
Function
Multifunctional actin-bundling protein. Plays a major role in regulating the organization, dimension, dynamics and signaling capacities of the actin filament-rich microvilli in the mechanosensory and chemosensory cells (PubMed:14657236, PubMed:15190118). Required for the assembly and stabilization of the stereociliary parallel actin bundles. Plays a crucial role in the formation and maintenance of inner ear hair cell stereocilia (PubMed:21455486). Involved in the elongation of actin in stereocilia (PubMed:19287378, PubMed:22264607). In extrastriolar hair cells, required for targeting MYO3B to stereocilia tips, and for regulation of stereocilia diameter and staircase formation (PubMed:26926603).
Mass
94.497 kDa
Sequence
MALEQALQAARRGDLDVLRSLHAAGLLGPSLRDSLDALPVHHAARSGKLHCLRYLVEEVALPAVSRARNGATPAHDAAATGYLSCLQWLLTQGGCRVQEKDNSGATVLHLAARFGHPDVVKWLLYQGGANSAITTDTGALPIHYAAAKGDLPSLKLLVGHYPEGVNAQTNNGATPLYLACQEGHLEVTKYLVQECSADPHLRAQDGMTPLHAAAQMGHNPVLVWLVSFADVSFSEQDHDGATAMHFAASRGHTKVLSWLLLHGAEISQDLWGGTPLHDAAENGELECCQILAVNGAGLDVRDHDGYTAADLAEFNGHTHCSRYLRTVQTLSLEHRVLSRDQSMDLEAKQLDSGMSSPNTTMSVQPMTFDLGSPTSTFSNYDSCSSSHSSSKGQRSNRGIPGARAADLQSYMDMLNPEKSLPRGKLGKPSPPPPPPPPPPSFPPPPPPTGTQPPPPPPGYPAPNPPVGLHLNNIYMQTKNKLRHVEVDSLKEPKVELNDQFAQPSSGDGHSGLHRQDSGLLRQDSELLHRQELLRHSTGLRRQDSDRKQRSFSKQPSTGDYYRQLGRSPGEPLAARPGMAHSEEAALLPGNHVHNGCSADSKASRELPPPPPPPPLPEALSSPPPAPPLPIEGAGAACGQRRSSSSTGKVRVLRHRKSTKSFNMMSPTGDNSELLAEIKAGKSLKPTPQSKGLTTVFSGSGQPASQPESPQPLVSPAPSRTRSPTPPASGSQPLLNGSVVPAPPATPAPGVHLDVEALIPTLDEQGRPIPEWKRQVMVRKLQQKMQEEEEQRRKEEEEEARLASLPAWRRDILRKKLEEEREQKRKEEERQKLEEIQRAKEQSEKLRTLGYDEAKLAPWQRQVILKKGEIPK

Gene
ESPN
Protein
Espin
Organism
Homo sapiens
Length
854 amino acids
Function
Multifunctional actin-bundling protein. Plays a major role in regulating the organization, dimension, dynamics and signaling capacities of the actin filament-rich microvilli in the mechanosensory and chemosensory cells. Required for the assembly and stabilization of the stereociliary parallel actin bundles. Plays a crucial role in the formation and maintenance of inner ear hair cell stereocilia. Involved in the elongation of actin in stereocilia. In extrastriolar hair cells, required for targeting MYO3B to stereocilia tips, and for regulation of stereocilia diameter and staircase formation.
Mass
91.733 kDa
Sequence
MALEQALQAARQGELDVLRSLHAAGLLGPSLRDPLDALPVHHAARAGKLHCLRFLVEEAALPAAARARNGATPAHDASATGHLACLQWLLSQGGCRVQDKDNSGATVLHLAARFGHPEVVNWLLHHGGGDPTAATDMGALPIHYAAAKGDFPSLRLLVEHYPEGVNAQTKNGATPLYLACQEGHLEVTQYLVQECGADPHARAHDGMTPLHAAAQMGHSPVIVWLVSCTDVSLSEQDKDGATAMHFAASRGHTKVLSWLLLHGGEISADLWGGTPLHDAAENGELECCQILVVNGAELDVRDRDGYTAADLSDFNGHSHCTRYLRTVENLSVEHRVLSRDPSAELEAKQPDSGMSSPNTTVSVQPLNFDLSSPTSTLSNYDSCSSSHSSIKGQHPPCGLSSARAADIQSYMDMLNPELGLPRGTIGKPTPPPPPPSFPPPPPPPGTQLPPPPPGYPAPKPPVGPQAADIYMQTKNKLRHVETEALKKELSSCDGHDGLRRQDSSRKPRAFSKQPSTGDYYRQLGRCPGETLAARPGMAHSEEVRARQPARAGCPRLGPAARGSLEGPSAPPQAALLPGNHVPNGCAADPKASRELPPPPPPPPPPLPEAASSPPPAPPLPLESAGPGCGQRRSSSSTGSTKSFNMMSPTGDNSELLAEIKAGKSLKPTPQSKGLTTVFSGIGQPAFQPDSPLPSVSPALSPVRSPTPPAAGFQPLLNGSLVPVPPTTPAPGVQLDVEALIPTHDEQGRPIPEWKRQVMVRKMQLKMQEEEEQRRKEEEEEARLASMPAWRRDLLRKKLEEEREQKRKEEERQKQEELRREKEQSEKLRTLGYDESKLAPWQRQVILKKGDIAKY

Gene
Espn
Protein
Espin
Organism
Rattus norvegicus
Length
837 amino acids
Function
Multifunctional actin-bundling protein. Plays a major role in regulating the organization, dimension, dynamics and signaling capacities of the actin filament-rich microvilli in the mechanosensory and chemosensory cells (PubMed:9763424). Required for the assembly and stabilization of the stereociliary parallel actin bundles. Plays a crucial role in the formation and maintenance of inner ear hair cell stereocilia. Involved in the elongation of actin in stereocilia. In extrastriolar hair cells, required for targeting MYO3B to stereocilia tips, and for regulation of stereocilia diameter and staircase formation (By similarity).
Mass
90.569 kDa
Sequence
MALEQAMQAARRGDLDVLRSLHAAGLLGPSLRDPLDALPVHHAARSGKLHCLRYLVEEVALPAVSRARNGATPAHDAAATGYLSCLQWLLTQGGCRVQEKDNSGATVLHLAARFGHPDVVNWLLYQGGANSAITTDTGALPIHYAAAKGDLPSMKLLVGHYPEGVNAQTNNGATPLYLACQEGHLEVTKYLVQECSADPHLRAQDGMTPLHAAAQMGHNPVLVWLVSFADVSFEQDHDGATAMHFAASRGHTKVLSWLLLHGAEISQDLWGGTPLHDAAENGELECCQILAVNGAGLDVRDHDGYTAADLADFNGHTHCSRYLRTVQTLSLEHRVLSRDPSMDLEAKQPDSGMSSPNTTMSVQPPNFDLGSPTSTLSNYDSCSSSHSSSKGQRSTRGARSSDLQSYMDMLNPEPRSKQGKPSSLPPPPPPSFPPPPPPGTQLPPPPPGYPAPNPPVGLHLDNIYMQTKNKLRHVEVDSLKKEPSSGDGYSGLRRQDSGLLRQDSELLLRHNTGLRRQDSDRKQRSFSKQPSTGDYYRQLGRSPGEPLAARPGMAHSEEAALLPGNHVHNGCSADSKASRELPPPPPPPPLPEALSSPPPAPPLPIEGAGAACGQRRSSSSTGSTKSFNMMSPTGDNSELLAEIKAGKSLKPTPQSKGLTTVFSGSGQPASQPESPQPAVSPGPSRARSPTPPASGPQPLLNGSIVPAPPATLAPGVHLDVEALIPTLDEQGRPIPEWKRQVMVRKLQQKMQEEEEQRRKEEEEEARLASLPAWRRDILRKKLEEEREQKRKEEERQKLEEIQRAKEQSEKLRTLGYDEAKLAPWQRQVILKKGEIPK