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Chlamydomonas reinhardtii (C. reinhardtii) is one of the most important microalgae model organisms and has been widely studied towards
the understanding of chloroplast functions and various cellular processes.Further exploitation of C. reinhardtii as a model system
to elucidate various molecular mechanisms and pathways requires systematic study of gene regulation. However, there is a general
lack of genome-scale gene regulation study such as global cis-regulatory element (CRE) identification in C. reinhardtii.
Recently, large-scale genomic data in microalgal species have become available,
which enable the development of efficient computational methods to systematically identify CREs and characterize their roles in microalgae gene regulation.
Here we performed in-silico CRE identification at the whole genome level in C. reinhardtii using a comparative-genomics-based method.
We identified a large number of CREs in C. reinhardtii that are consistent with experimentally verified CREs.
We also discovered that a large percentage of these CREs form combinations and have the potential to work together for coordinated gene regulation in C. reinhardtii.
Multiple evidences from literature, gene transcriptional profiles and gene annotation resources support our discovery.
The discovered CREs will serve as the first large-scale collection of CREs in C. reinhardtii to facilitate further experimental study of microalgae gene regulation.
This material is based upon work supported by the National
Science Foundation under Grant No. CBET1125676.
Any opinions, findings and conclusions or recomendations
expressed in this material are those of the author(s)
and do not necessarily reflect the views of the National Science Foundation