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On the TPPP-like proteins of flagellated fungi
Fungal Biology ( IF 2.5 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.funbio.2020.12.001
Ferenc Orosz 1
Affiliation  

Abstract TPPP-like proteins, exhibiting microtubule stabilizing function, constitute a eukaryotic protein superfamily, characterized by the presence of the p25alpha domain. TPPPs in the strict sense are present in animals except the placozoan Trichoplax adhaerens, which instead contains apicortin where a part of the p25alpha domain is combined with a DCX domain. Apicortin is absent in any other animal and occurs mostly in the parasitic protozoan phylum, Apicomplexa. A strong correlation between the occurrence of p25alpha domain and that of the eukaryotic cilium/flagellum was suggested. Species of the deeper branching clades of Fungi possess flagellum but others lost it thus investigation of fungal genomes can help the testing of this suggestion. Indeed, these proteins are present in early branching Fungi. Both TPPP and apicortin are present in Rozellomycota (Cryptomycota) and Chytridiomycota, TPPP in Blastocladiomycota, apicortin in Neocallimastigomycota, Monoblepharomycota and the non-flagellated Mucoromycota (in Endogonomycetes). Beside the “normal” TPPP occurring in animals, a special, fungal-type TPPP is also present in Fungi, in which a part of the p25alpha domain is duplicated. Dikarya, the most developed subkingdom of Fungi, lacks both flagellum and TPPPs. Thus it is strengthened that each ciliated/flagellated organism contains p25alpha domain-containing proteins while there are very few non-flagellated ones where p25alpha domain can be found.

中文翻译:

鞭毛真菌类TPPP蛋白的研究

摘要 具有微管稳定功能的 TPPP 样蛋白构成了真核蛋白超家族,其特征是存在 p25alpha 结构域。严格意义上的 TPPPs 存在于动物中,除了 placozoan Trichoplax adhaerens,它包含 apicortin,其中 p25alpha 域的一部分与 DCX 域结合。Apicortin 在任何其他动物中都不存在,主要存在于寄生原生动物门 Apicomplexa 中。建议 p25alpha 域的出现与真核纤毛/鞭毛的出现之间存在很强的相关性。真菌的更深分支进化枝的物种具有鞭毛,但其他物种失去了它,因此真菌基因组的研究可以帮助测试这一建议。事实上,这些蛋白质存在于早期分枝真菌中。TPPP 和 apicortin 都存在于 Rozellomycota (Cryptomycota) 和 Chytridiomycota,TPPP 存在于 Blastocladiomycota,Apicortin 存在于 Neocallimastigomycota、Monoblepharomycota 和非鞭毛毛菌门 (Nendogonomycetes)。除了在动物中发生的“正常”TPPP,真菌中还存在一种特殊的真菌型 TPPP,其中 p25alpha 结构域的一部分被复制。Dikarya 是真菌最发达的亚界,缺乏鞭毛和 TPPP。因此,每个纤毛/鞭毛生物都包含含有 p25alpha 结构域的蛋白质,而很少有非鞭毛生物可以找到 p25alpha 结构域。除了在动物中发生的“正常”TPPP,真菌中还存在一种特殊的真菌型 TPPP,其中 p25alpha 结构域的一部分被复制。Dikarya 是真菌最发达的亚界,缺乏鞭毛和 TPPP。因此,每个纤毛/鞭毛生物都含有含有 p25alpha 结构域的蛋白质,而很少有非鞭毛生物可以找到 p25alpha 结构域。除了在动物中发生的“正常”TPPP,真菌中还存在一种特殊的真菌型 TPPP,其中 p25alpha 结构域的一部分被复制。Dikarya 是真菌最发达的亚界,缺乏鞭毛和 TPPP。因此,每个纤毛/鞭毛生物都包含含有 p25alpha 结构域的蛋白质,而很少有非鞭毛生物可以找到 p25alpha 结构域。
更新日期:2020-12-01
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