PMID- 29375488 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220408 IS - 1664-302X (Print) IS - 1664-302X (Electronic) IS - 1664-302X (Linking) VI - 8 DP - 2017 TI - Identification and Characterization of 5' Untranslated Regions (5'UTRs) in Zymomonas mobilis as Regulatory Biological Parts. PG - 2432 LID - 10.3389/fmicb.2017.02432 [doi] LID - 2432 AB - Regulatory RNA regions within a transcript, particularly in the 5' untranslated region (5'UTR), have been shown in a variety of organisms to control the expression levels of these mRNAs in response to various metabolites or environmental conditions. Considering the unique tolerance of Zymomonas mobilis to ethanol and the growing interest in engineering microbial strains with enhanced tolerance to industrial inhibitors, we searched natural cis-regulatory regions in this microorganism using transcriptomic data and bioinformatics analysis. Potential regulatory 5'UTRs were identified and filtered based on length, gene function, relative gene counts, and conservation in other organisms. An in vivo fluorescence-based screening system was developed to confirm the responsiveness of 36 5'UTR candidates to ethanol, acetate, and xylose stresses. UTR_ZMO0347 (5'UTR of gene ZMO0347 encoding the RNA binding protein Hfq) was found to down-regulate downstream gene expression under ethanol stress. Genomic deletion of UTR_ZMO0347 led to a general decrease of hfq expression at the transcript level and increased sensitivity for observed changes in Hfq expression at the protein level. The role of UTR_ZMO0347 and other 5'UTRs gives us insight into the regulatory network of Z. mobilis in response to stress and unlocks new strategies for engineering robust industrial strains as well as for harvesting novel responsive regulatory biological parts for controllable gene expression platforms in this organism. FAU - Cho, Seung Hee AU - Cho SH AD - Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, TX, United States. FAU - Haning, Katie AU - Haning K AD - Department of Chemical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, United States. FAU - Shen, Wei AU - Shen W AD - Hubei Key Laboratory of Industrial Biotechnology, Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, China. FAU - Blome, Cameron AU - Blome C AD - Department of Chemical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, United States. FAU - Li, Runxia AU - Li R AD - Hubei Key Laboratory of Industrial Biotechnology, Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, China. FAU - Yang, Shihui AU - Yang S AD - Hubei Key Laboratory of Industrial Biotechnology, Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, China. FAU - Contreras, Lydia M AU - Contreras LM AD - Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, TX, United States. AD - Department of Chemical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, United States. LA - eng PT - Journal Article DEP - 20171208 PL - Switzerland TA - Front Microbiol JT - Frontiers in microbiology JID - 101548977 PMC - PMC5770649 OTO - NOTNLM OT - 5' UTR OT - 5' rapid amplification of cDNA ends (RACE) OT - Zymomonas mobilis OT - regulatory RNA OT - stress response EDAT- 2018/01/30 06:00 MHDA- 2018/01/30 06:01 PMCR- 2017/12/08 CRDT- 2018/01/30 06:00 PHST- 2017/07/26 00:00 [received] PHST- 2017/11/23 00:00 [accepted] PHST- 2018/01/30 06:00 [entrez] PHST- 2018/01/30 06:00 [pubmed] PHST- 2018/01/30 06:01 [medline] PHST- 2017/12/08 00:00 [pmc-release] AID - 10.3389/fmicb.2017.02432 [doi] PST - epublish SO - Front Microbiol. 2017 Dec 8;8:2432. doi: 10.3389/fmicb.2017.02432. eCollection 2017.