文献类型： 外文期刊
作者： Merchant, Alisha 1 ; Ramirez, Bradly I. 1 ; Reyes, Melinda N. 1 ; Van, Dysocheata 1 ; Martinez-Colin, Marilin 1 ; Ojo, Damilola O. 1 ; Mazuca, Esmeralda L. 1 ; De La O, Heidi J. J. 1 ; Glenn, Abigayle M. 1 ; Lira, Claudia G. 1 ; Ehsan, Hashimul 1 ; Yu, Ermeng 2 ; Kaneko, Gen 1 ;
作者机构： 1.Univ Houston Victoria, Coll Nat & Appl Sci, Victoria, TX 77901 USA
2.Pearl River Fisheries Res Inst CAFS, Key Lab Trop & Subtrop Fishery Resource Applicat &, Guangzhou 510380, Peoples R China
关键词： Chordata; Comparative genomics; Heat shock protein; Molecular evolution; Synteny
期刊名称：CELL STRESS & CHAPERONES （ 影响因子：3.8； 五年影响因子：3.7 ）
ISSN： 1355-8145
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Metazoan 70 kDa heat shock protein (HSP70) genes have been classified into four lineages: cytosolic A (HSP70cA), cytosolic B (HSP70cB), endoplasmic reticulum (HSP70er), and mitochondria (HSP70m). Because previous studies have identified no HSP70cA genes in vertebrates, we hypothesized that this gene was lost on the evolutionary path to vertebrates. To test this hypothesis, the present study conducted a comprehensive database search followed by phylogenetic and synteny analyses. HSP70cA genes were found in invertebrates and in two of the three subphyla of Chordata, Cephalochordata (lancelets) and Tunicata (tunicates). However, no HSP70cA gene was found in the genomes of Craniata (another subphylum of Chordata; lamprey, hagfish, elephant shark, and coelacanth), suggesting the loss of the HSP70cA gene in the early period of vertebrate evolution. Synteny analysis using available genomic resources indicated that the synteny around the HSP70 genes was generally conserved between tunicates but was largely different between tunicates and lamprey. These results suggest the presence of dynamic chromosomal rearrangement in early vertebrates that possibly caused the loss of the HSP70cA gene in the vertebrate lineage.
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