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IST1

Gene
Ist1
Protein
IST1 homolog
Organism
Rattus norvegicus
Length
366 amino acids
Function
ESCRT-III-like protein involved in specific functions of the ESCRT machinery. Is required for efficient abscission during cytokinesis, but not for HIV-1 budding. The involvement in the MVB pathway is not established. Involved in recruiting VPS4A and/or VPS4B to the midbody of dividing cells. During late anaphase, involved in nuclear envelope reassembly and mitotic spindle disassembly together with the ESCRT-III complex: IST1 acts by mediating the recruitment of SPAST to the nuclear membrane, leading to microtubule severing. Regulates early endosomal tubulation together with the ESCRT-III complex by mediating the recruitment of SPAST.
Similarity
Belongs to the IST1 family.
Mass
39.942 kDa
Sequence
MLGSGFKAERLRVNLRLVINRLKLLEKKKTELAQKARKEIADYLAAGKDERARIRVEHIIREDYLVEAMEILELYCDLLLARFGLIQSMKELDSGLAESVSTLIWAAPRLQSEVAELKIVADQLCAKYSKEYGKLCRTNQIGTVNDRLMHKLSVEAPPKILVERYLIEIAKNYNVPYEPDSVVMAEAPVGVETDLIDVGFTDDVKKGGPGRGGGGGFTAPVGAPDGTMPMPMPMPMPMPSPSPNAPFAYPLPKGPSDFSGLPVGTYQAFPNIHPPQIPATPPSYESVDDINADKNVSSAQIVGPKPEAPAKPPSRPVDNYNTFVLPELPSVPDTLPTASAGASTSASEDIDFDDLSRRFEELKKKT

Gene
IST1
Protein
IST1 homolog
Organism
Bos taurus
Length
364 amino acids
Function
ESCRT-III-like protein involved in specific functions of the ESCRT machinery. Is required for efficient abscission during cytokinesis, but not for HIV-1 budding. The involvement in the MVB pathway is not established. Involved in recruiting VPS4A and/or VPS4B to the midbody of dividing cells. During late anaphase, involved in nuclear envelope reassembly and mitotic spindle disassembly together with the ESCRT-III complex: IST1 acts by mediating the recruitment of SPAST to the nuclear membrane, leading to microtubule severing. Regulates early endosomal tubulation together with the ESCRT-III complex by mediating the recruitment of SPAST.
Similarity
Belongs to the IST1 family.
Mass
39.791 kDa
Sequence
MLGSGIKAERLRVNLRLVINRLKLLEKKKTELAQKARKEIADYLAAGKDERARIRVEHIIREDYLVEAMEILELYCDLLLARFGLIQSMKELDSGLAESVSTLIWAAPRLQSEVAELKIVADQLCAKYSKEYGKLCRTNQIGTVNDRLMHKLSVEAPPKILVERYLIEIAKNYNVPYEPDSVVMAEAPPGVETDLIDVGFTDDVKKGGPGRGGGGGFTAPVGGPDGTVPMPMPMPMPSPNTPFSYPLPKGPSDFNGLPVGTYQAFPNIHPPQIPATPPSYESVDDINADKNVSSTQIVGPGPKPEPPAKPASRLTETYDNFVLPELPSVPDTLPTASPGANTSASEDIDFDDLSRRFEELKKKT

Gene
IST1
Protein
IST1 homolog
Organism
Homo sapiens
Length
364 amino acids
Function
ESCRT-III-like protein involved in specific functions of the ESCRT machinery. Is required for efficient abscission during cytokinesis, but not for HIV-1 budding. The involvement in the MVB pathway is not established. Involved in recruiting VPS4A and/or VPS4B to the midbody of dividing cells (PubMed:19129479, PubMed:19129480). During late anaphase, involved in nuclear envelope reassembly and mitotic spindle disassembly together with the ESCRT-III complex: IST1 acts by mediating the recruitment of SPAST to the nuclear membrane, leading to microtubule severing (PubMed:26040712). Regulates early endosomal tubulation together with the ESCRT-III complex by mediating the recruitment of SPAST (PubMed:23897888).
Similarity
Belongs to the IST1 family.
Mass
39.751 kDa
Sequence
MLGSGFKAERLRVNLRLVINRLKLLEKKKTELAQKARKEIADYLAAGKDERARIRVEHIIREDYLVEAMEILELYCDLLLARFGLIQSMKELDSGLAESVSTLIWAAPRLQSEVAELKIVADQLCAKYSKEYGKLCRTNQIGTVNDRLMHKLSVEAPPKILVERYLIEIAKNYNVPYEPDSVVMAEAPPGVETDLIDVGFTDDVKKGGPGRGGSGGFTAPVGGPDGTVPMPMPMPMPSANTPFSYPLPKGPSDFNGLPMGTYQAFPNIHPPQIPATPPSYESVDDINADKNISSAQIVGPGPKPEASAKLPSRPADNYDNFVLPELPSVPDTLPTASAGASTSASEDIDFDDLSRRFEELKKKT

Gene
IST1
Protein
IST1 homolog
Organism
Pongo abelii
Length
364 amino acids
Function
ESCRT-III-like protein involved in specific functions of the ESCRT machinery. Is required for efficient abscission during cytokinesis, but not for HIV-1 budding. The involvement in the MVB pathway is not established. Involved in recruiting VPS4A and/or VPS4B to the midbody of dividing cells. During late anaphase, involved in nuclear envelope reassembly and mitotic spindle disassembly together with the ESCRT-III complex: IST1 acts by mediating the recruitment of SPAST to the nuclear membrane, leading to microtubule severing. Regulates early endosomal tubulation together with the ESCRT-III complex by mediating the recruitment of SPAST.
Similarity
Belongs to the IST1 family.
Mass
39.662 kDa
Sequence
MLGSGFKAERLRVNLRLVINRLKLLEKKKTELAQKARKEIADYLAAGKDERARIRVEHIIREDYLVEAMEILELYCDLLLARFGLIQSMKELDSGLAESVSTLIWAAPRLQSEVAELKIVADQLCAKYSKGYGKLCRTNQIGTVNDRLMHKLSVEAPPKILVERYLIEIAKNYNVPYEPDSVVMAEAPPGVETDLIDVGFTDDVKKGGPGRGGGGGFTAPVGGPEGTVPMPMPMPMPSANTPFSYPLPKGPSDFNGLPMGTYQAFPIIHPPQIPATPPSYESVDDINADKNISSAQIVGPGPKPEASAKLPSRPADNYDNFVLPELPSVPDTLPTASAGASTSASEDIDFDDLSRRFEELKKKT

Gene
Ist1
Protein
IST1 homolog
Organism
Mus musculus
Length
362 amino acids
Function
ESCRT-III-like protein involved in specific functions of the ESCRT machinery. Is required for efficient abscission during cytokinesis, but not for HIV-1 budding. The involvement in the MVB pathway is not established. Involved in recruiting VPS4A and/or VPS4B to the midbody of dividing cells. During late anaphase, involved in nuclear envelope reassembly and mitotic spindle disassembly together with the ESCRT-III complex: IST1 acts by mediating the recruitment of SPAST to the nuclear membrane, leading to microtubule severing. Regulates early endosomal tubulation together with the ESCRT-III complex by mediating the recruitment of SPAST.
Similarity
Belongs to the IST1 family.
Mass
39.468 kDa
Sequence
MLGSGFKAERLRVNLRLVINRLKLLEKKKTELAQKARKEIADYLAAGKDERARIRVEHIIREDYLVEAMEILELYCDLLLARFGLIQSMKELDSGLAESVSTLIWAAPRLQSEVAELKIVADQLCAKYSKEYGKLCRTNQIGTVNDRLMHKLSVEAPPKILVERYLIEIAKNYNVPYEPDSVVMAEAPVGVETDLIDVGFTDDVKKGGPGRGGGGGFTAPVGGPDGIVPMPMPMPMPSPNAPFAYPLPKGPSDFSGLPVGTYQAFPNIHPPQIPATPPSYESVDDINGDKTVSSAQIVGPKPEAPAKPPSRPVDNYNTFVLPELPSVPDTLPTASAGASTSASEDIDFDDLSRRFEELKKKT

Gene
IST1
Protein
Vacuolar protein sorting-associated protein IST1
Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Length
298 amino acids
Function
Involved in a late step in sorting of cargo proteins of the multivesicular body (MVB) for incorporation into intralumenal vesicles. The lumenal sequestrated membrane proteins are targeted into the vacuole after fusion of the endosome with the vacuole. Regulates the recruitment of VPS4 to the ESCRT-III complex, probably in conjunction with DID2, and VPS4 catalyzes the disassembly of the ESCRT-III complex.
Similarity
Belongs to the IST1 family.
Mass
34.496 kDa
Sequence
MAPSMIPFTIKLKTCLKMCIQRLRYAQEKQQAIAKQSRRQVAQLLLTNKEQKAHYRVETLIHDDIHIELLEILELYCELLLARVQVINDISTEEQLVKEHMDDGINEAIRSLIYAILFVDEVKELSQLKDLMAWKINVEFVNGVIADHIDVPEKIIKKCSPSVPKEELVDLYLKEIAKTYDVPYSKLENSLSSSSSNISSDFSDPSGDIEDNDEEKPILALDNDDNDNADAKHPITVKKPRQNSENIKNELKIPKDIKKEVIEKKQSEKKTTKRKTKKEQENDELDELKKRFDALRRK

Gene
ist1
Protein
Vacuolar protein sorting-associated protein ist1
Organism
Schizosaccharomyces pombe (strain 972 / ATCC 24843)
Length
271 amino acids
Function
Involved in a late step in sorting of cargo proteins of the multivesicular body (MVB) for incorporation into intralumenal vesicles. The lumenal sequestrated membrane proteins are targeted into the vacuole after fusion of the endosome with the vacuole (By similarity).
Similarity
Belongs to the IST1 family.
Mass
30.808 kDa
Sequence
MSRLQIQLKLAASRIEILRQKEEALAKQARRNVALGLKSYSPALAKARIEPLIMQDIYIELLELLQVDVEILANRCVVLEKRAFNDSMSFKSSLYHVMAAAPQLQIKELRFVHDFLVKLYGKEFARLSDPDLATNDTAFYQLLYPPIPKDELVEAYRKELIRTYFPNDYPKEANKDIPSSAEADTMLNLESSENREQPTSLKEENTQEDDEKVNGNLANISKRAEPQNNGSTNASSLQSSNYLPTNPTLTHSNKAPSFEELAARLDRLKHL