The Paulinella micropora KR01 genome sequence and gene models were not determined by the Joint Genome Institute (JGI), but were downloaded from Rutgers on October 26, 2022. In order to ensure this genome is comparable to those sequenced by the JGI, we applied filters to remove if present: 1) transposable elements, 2) pseudogenes, 3) alternative transcripts and overlapping models, 4) alleles on secondary scaffolds and 5) unsupported short models. This resulted in the removal of 17035 models and the generation of the FilteredModels1 (GeneCatalog) gene track. All published models are available in the ExternalModels track. Please note that this copy of the genome is not maintained by Rutgers and is therefore not automatically updated. In order to allow comparative analyses with other algal genomes sequenced by the JGI, a copy of this genome is incorporated into PhycoCosm. The JGI Annotation Pipeline was used to add functional annotation to the genes.
The following text is modified from NCBI BioProject PRJNA568118:
Paulinella micropora strain:KR01
The thecate filose amoeba Paulinella micropora is a good model organism for understanding plastid organellogenesis because its chromatophore was newly derived from an alpha-cyanobacterium. Plastid primary endosymbiosis in Paulinella occurred relatively recently (90–140 million years ago, Mya), whereas the origin of the canonical Archaeplastida plastid occurred >1,500 Mya. Therefore, these two events provide independent perspectives on plastid formation on vastly different timescales. The genome of Paulinella micropora would represent a valuable informational foundation to explore mechanism and dynamics of Endosymbotic Gene Transfer (EGT) and the contribution of genes acquired by Horizontal Gene Transfer (HGT) to chromatophore integration.
Genome Reference(s)
Lhee D, Lee J, Ettahi K, Cho CH, Ha JS, Chan YF, Zelzion U, Stephens TG, Price DC, Gabr A, Nowack ECM, Bhattacharya D, Yoon HS
Amoeba Genome Reveals Dominant Host Contribution to Plastid Endosymbiosis.
Mol Biol Evol. 2021 Jan 23;38(2):344-357. doi: 10.1093/molbev/msaa206