The mitochondrial proteome of diplonemids: from conventional pathways to eccentric RNA editing and transcript processing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00643792" target="_blank" >RIV/60077344:_____/25:00643792 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/25:43910747

Výsledek na webu

<a href="https://doi.org/10.1186/s12864-025-12233-1" target="_blank" >https://doi.org/10.1186/s12864-025-12233-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1186/s12864-025-12233-1" target="_blank" >10.1186/s12864-025-12233-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The mitochondrial proteome of diplonemids: from conventional pathways to eccentric RNA editing and transcript processing

Popis výsledku v původním jazyce

Background Diplonemids constitute an abundant and geographically widespread but little-studied group of marine protists. A hallmark of this lineage, the kinetoplastid sister group within Euglenozoa, is a mitochondrial genome comprising numerous small circular DNA molecules that carry fragments of mitochondrial genes. Complex RNA processing of the corresponding transcripts involves numerous ligation and RNA editing steps in the production of mature RNA species.To assess the diplonemid mitochondrial proteome and, in particular, to search for proteins that might mediate RNA processing, we undertook a comprehensive in silico analysis to predict candidate mitochondrial proteins in the type species Diplonema papillatum. Results Using sequence similarity searches in conjunction with a mitochondrial targeting pipeline, we identified at least 1878 candidate nucleus-encoded mitochondrial proteins in addition to 16 mitochondrion-encoded proteins described previously. Despite the highly unconventional nature of the mitochondrial genome in D. papillatum, its mitochondrial proteome (mitoproteome) contains virtually all the functionally most important proteins that are ubiquitous among aerobic mitochondria, and several novel proteins that have been recruited in the euglenozoan last common ancestor to augment complexes involved in coupled electron transport oxidative phosphorylation and mitochondrial ribosome formation. Notably, we identified several individual proteins and multi-protein families that are candidates for RNA ligation and editing enzymes. Conclusions This first comprehensive mitoproteome data for a diplonemid, together with published mitoproteome data for other members of Discoba, allows us to make inferences about marked changes in mitochondrial structure and function that have occurred since the divergence of diplonemids and other euglenozoans from the last common discobid ancestor.

Název v anglickém jazyce

The mitochondrial proteome of diplonemids: from conventional pathways to eccentric RNA editing and transcript processing

Popis výsledku anglicky

Background Diplonemids constitute an abundant and geographically widespread but little-studied group of marine protists. A hallmark of this lineage, the kinetoplastid sister group within Euglenozoa, is a mitochondrial genome comprising numerous small circular DNA molecules that carry fragments of mitochondrial genes. Complex RNA processing of the corresponding transcripts involves numerous ligation and RNA editing steps in the production of mature RNA species.To assess the diplonemid mitochondrial proteome and, in particular, to search for proteins that might mediate RNA processing, we undertook a comprehensive in silico analysis to predict candidate mitochondrial proteins in the type species Diplonema papillatum. Results Using sequence similarity searches in conjunction with a mitochondrial targeting pipeline, we identified at least 1878 candidate nucleus-encoded mitochondrial proteins in addition to 16 mitochondrion-encoded proteins described previously. Despite the highly unconventional nature of the mitochondrial genome in D. papillatum, its mitochondrial proteome (mitoproteome) contains virtually all the functionally most important proteins that are ubiquitous among aerobic mitochondria, and several novel proteins that have been recruited in the euglenozoan last common ancestor to augment complexes involved in coupled electron transport oxidative phosphorylation and mitochondrial ribosome formation. Notably, we identified several individual proteins and multi-protein families that are candidates for RNA ligation and editing enzymes. Conclusions This first comprehensive mitoproteome data for a diplonemid, together with published mitoproteome data for other members of Discoba, allows us to make inferences about marked changes in mitochondrial structure and function that have occurred since the divergence of diplonemids and other euglenozoans from the last common discobid ancestor.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10601 - Cell biology

Projekt

<a href="/cs/project/GX23-06479X" target="_blank" >GX23-06479X: Co vlastně dělají nejběžnější bílkoviny v oceánu?</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

BMC Genomics

ISSN

1471-2164

e-ISSN

1471-2164

Svazek periodika

26

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

27

Strana od-do

1099

Kód UT WoS článku

001637728600001

EID výsledku v databázi Scopus

2-s2.0-105024745354