Ancient, highly conserved proteins from a LUCA with complex cell biology provide evidence in support of the nuclear compartment commonality (NuCom) hypothesis

被引：7
作者：
Staley, James T. [1 ,2 ]
Fuerst, John A. [3 ]
机构：
[1] Univ Washington, Dept Microbiol, Seattle, WA 98195 USA
[2] Univ Washington, Astrobiol Program, Seattle, WA 98195 USA
[3] Univ Queensland, Sch Chem & Mol Biosci, St Lucia, Qld 4072, Australia
来源：
RESEARCH IN MICROBIOLOGY | 2017年 / 168卷 / 05期
基金：
澳大利亚研究理事会;
关键词：
LUCA; PVC superphylum; Planctomycetes; Verrucomicrobia; Origin of eukaryotes; Ancient cell compartmentalization; PHYLUM VERRUCOMICROBIA; REDUCTIVE EVOLUTION; STEROL SYNTHESIS; DOMAINS ARCHAEA; ORIGIN; MEMBRANE; ANCESTOR; EUKARYOTES; BACTERIA; PHYLOGENY;
D O I：
10.1016/j.resmic.2017.01.001
中图分类号：
Q93 [微生物学];
学科分类号：
071005 ; 100705 ;
摘要：
The nuclear compartment commonality (NuCom) hypothesis posits a complex last common ancestor (LUCA) with membranous compartments including a nuclear membrane. Such a LUCA then evolved to produce two nucleated lineages of the tree of life: the Planctomycetese-Verrucomicrobiae-Chlamydia superphylum (PVC) within the Bacteria, and the Eukarya. We propose that a group of ancient essential protokaryotic signature proteins (PSPs) originating in LUCAwere incorporated into ancestors of PVC Bacteria and Eukarya. Tubulins, ubiquitin system enzymes and sterol-synthesizing enzymes are consistent with early origins of these features shared between the PVC superphylum and Eukarya. (C) 2017 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved .
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收藏
页码：395 / 412
页数：18
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