Supplementary Materials: Modular Diversity of the BLUF Proteins and Their Potential for the Development of Diverse Optogenetic Tools
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BMC Microbiology BioMed Central Research article Open Access A census of membrane-bound and intracellular signal transduction proteins in bacteria: Bacterial IQ, extroverts and introverts Michael Y Galperin* Address: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA Email: Michael Y Galperin* - [email protected] * Corresponding author Published: 14 June 2005 Received: 18 April 2005 Accepted: 14 June 2005 BMC Microbiology 2005, 5:35 doi:10.1186/1471-2180-5-35 This article is available from: http://www.biomedcentral.com/1471-2180/5/35 © 2005 Galperin; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: Analysis of complete microbial genomes showed that intracellular parasites and other microorganisms that inhabit stable ecological niches encode relatively primitive signaling systems, whereas environmental microorganisms typically have sophisticated systems of environmental sensing and signal transduction. Results: This paper presents results of a comprehensive census of signal transduction proteins – histidine kinases, methyl-accepting chemotaxis receptors, Ser/Thr/Tyr protein kinases, adenylate and diguanylate cyclases and c-di-GMP phosphodiesterases – encoded in 167 bacterial and archaeal genomes, sequenced by the end of 2004. The data have been manually checked to avoid false- negative and false-positive hits that commonly arise during large-scale automated analyses and compared against other available resources. The census data show uneven distribution of most signaling proteins among bacterial and archaeal phyla. -
The World of Cyclic Dinucleotides in Bacterial Behavior
molecules Review The World of Cyclic Dinucleotides in Bacterial Behavior Aline Dias da Purificação, Nathalia Marins de Azevedo, Gabriel Guarany de Araujo , Robson Francisco de Souza and Cristiane Rodrigues Guzzo * Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 01000-000, Brazil * Correspondence: [email protected] or [email protected]; Tel.: +55-11-3091-7298 Received: 27 December 2019; Accepted: 17 March 2020; Published: 25 May 2020 Abstract: The regulation of multiple bacterial phenotypes was found to depend on different cyclic dinucleotides (CDNs) that constitute intracellular signaling second messenger systems. Most notably, c-di-GMP, along with proteins related to its synthesis, sensing, and degradation, was identified as playing a central role in the switching from biofilm to planktonic modes of growth. Recently, this research topic has been under expansion, with the discoveries of new CDNs, novel classes of CDN receptors, and the numerous functions regulated by these molecules. In this review, we comprehensively describe the three main bacterial enzymes involved in the synthesis of c-di-GMP, c-di-AMP, and cGAMP focusing on description of their three-dimensional structures and their structural similarities with other protein families, as well as the essential residues for catalysis. The diversity of CDN receptors is described in detail along with the residues important for the interaction with the ligand. Interestingly, genomic data strongly suggest that there is a tendency for bacterial cells to use both c-di-AMP and c-di-GMP signaling networks simultaneously, raising the question of whether there is crosstalk between different signaling systems. In summary, the large amount of sequence and structural data available allows a broad view of the complexity and the importance of these CDNs in the regulation of different bacterial behaviors. -
Chi Subunit of Polymerase III Holoenzyme May Have Function in Addition to Facilitating DNA Replication
Chi Subunit of Polymerase III Holoenzyme May Have Function in Addition to Facilitating DNA Replication Master’s Thesis Presented to The Faculty of the Graduate School of Arts and Sciences Brandeis University Department of Biochemistry Dr. Susan Lovett, Advisor In Partial Fulfillment of the Requirements for the Degree Master of Science in Biochemistry by Taku Harada May 2018 Copyright by Taku Harada © 2018 Acknowledgments I would like to thank my advisor Dr. Susan Lovett. Thank you for sharing this opportunity to explore the E. coli genome with you. I had a wonderful experience. Along the way, your unwavering support and encouragement was irreplaceable. I am greatly fortunate and appreciative. Thank you to my mentor Dr. Alex Ferazzoli. No amount of words could ever describe the gratitude I have for you. You were a mentor for me in science and life. Thank you for always supporting and encouraging me to learn even if, at times, it meant failure. I attribute my success to your investment and confidence in me. Most importantly, your enthusiasm and joyous personality is inspirational and made every day a good day. Thank you to Ariana, Dr. Cooper, Laura, Vinny, Julie, McKay and everyone who worked in the Lovett lab during my stay. You all welcomed me in and provided a supportive environment that extended beyond the lab walls. I am very fortunate to have worked with all of you. Thank you to all my friends. Special thanks Adib, Eli, Jessie, and Rich. My four years at Brandeis have been phenomenal because of your support and motivation. I look forward to many more years of friendship. -
Mutations That Separate the Functions of the Proofreading Subunit of the Escherichia Coli Replicase
G3: Genes|Genomes|Genetics Early Online, published on April 15, 2015 as doi:10.1534/g3.115.017285 Mutations that separate the functions of the proofreading subunit of the Escherichia coli replicase Zakiya Whatley*,1 and Kenneth N Kreuzer*§ *University Program in Genetics & Genomics, Duke University, Durham, NC 27705 §Department of Biochemistry, Duke University Medical Center, Durham, NC 27710 1 © The Author(s) 2013. Published by the Genetics Society of America. Running title: E. coli dnaQ separation of function mutants Keywords: DNA polymerase, epsilon subunit, linker‐scanning mutagenesis, mutation rate, SOS response Corresponding author: Kenneth N Kreuzer, Department of Biochemistry, Box 3711, Nanaline Duke Building, Research Drive, Duke University Medical Center, Durham, NC 27710 Phone: 919 684 6466 FAX: 919 684 6525 Email: [email protected] 1 Present address: Department of Biology, 300 N Washington Street, McCreary Hall, Campus Box 392, Gettysburg College, Gettysburg, PA 17325 Phone: 717 337 6160 Fax: 7171 337 6157 Email: [email protected] 2 ABSTRACT The dnaQ gene of Escherichia coli encodes the ε subunit of DNA polymerase III, which provides the 3’ 5’ exonuclease proofreading activity of the replicative polymerase. Prior studies have shown that loss of ε leads to high mutation frequency, partially constitutive SOS, and poor growth. In addition, a previous study from our lab identified dnaQ knockout mutants in a screen for mutants specifically defective in the SOS response following quinolone (nalidixic acid) treatment. To explain these results, we propose a model whereby in addition to proofreading, ε plays a distinct role in replisome disassembly and/or processing of stalled replication forks. -
1 Mechanistic Studies of DNA Replication, Lesion Bypass, And
Mechanistic Studies of DNA Replication, Lesion Bypass, and Editing Dissertation Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Austin Tyler Raper, B.S. The Ohio State University Biochemistry Graduate Program The Ohio State University 2018 Dissertation Committee Dr. Zucai Suo, Advisor Dr. Ross Dalbey Dr. Michael Poirier Dr. Richard Swenson 1 Copyrighted by Austin Tyler Raper 2018 2 Abstract DNA acts as a molecular blueprint for life. Adenosine, cytidine, guanosine, and thymidine nucleotides serve as the building blocks of DNA and can be arranged in near- endless combinations. These unique sequences of DNA may encode genes that when expressed produce RNA, proteins, and enzymes responsible for executing diverse tasks necessary for biological existence. Accordingly, careful maintenance of the molecular integrity of DNA is paramount for the growth, development, and functioning of organisms. However, DNA is damaged upon reaction with pervasive chemicals generated by normal cellular metabolism or encountered through the environment. The resulting DNA lesions act as roadblocks to high-fidelity A- and B-family DNA polymerases responsible for replicating DNA in preparation for cell division which may lead to programmed cell death. Additionally, these lesions may fool the polymerase into making errors during DNA replication, leading to genetic mutations and cancer. Fortunately, the cell has evolved DNA damage tolerance as an emergency response to such lesions. During DNA damage tolerance, a damage-stalled high-fidelity polymerase is substituted for a specialized Y-family polymerase, capable of bypassing the offending DNA lesion, for replication to continue. -
Analysis of a Multicomponent Thermostable DNA Polymerase III Replicase from an Extreme Thermophile*
THE JOURNAL OF BIOLOGICAL CHEMISTRY Vol. 277, No. 19, Issue of May 10, pp. 17334–17348, 2002 © 2002 by The American Society for Biochemistry and Molecular Biology, Inc. Printed in U.S.A. Analysis of a Multicomponent Thermostable DNA Polymerase III Replicase from an Extreme Thermophile* Received for publication, October 23, 2001, and in revised form, February 18, 2002 Published, JBC Papers in Press, February 21, 2002, DOI 10.1074/jbc.M110198200 Irina Bruck‡, Alexander Yuzhakov§¶, Olga Yurieva§, David Jeruzalmi§, Maija Skangalis‡§, John Kuriyan‡§, and Mike O’Donnell‡§ʈ From §The Rockefeller University and ‡Howard Hughes Medical Institute, New York, New York 10021 This report takes a proteomic/genomic approach to polymerase III (pol III) structure and function has been ob- characterize the DNA polymerase III replication appa- tained from studies of the Escherichia coli replicase, DNA ratus of the extreme thermophile, Aquifex aeolicus. polymerase III holoenzyme (reviewed in Ref. 6). Therefore, a Genes (dnaX, holA, and holB) encoding the subunits re- brief overview of its structure and function is instructive for the ␦ ␦ quired for clamp loading activity ( , , and ) were iden- comparisons to be made in this report. In E. coli, the catalytic Downloaded from tified. The dnaX gene produces only the full-length subunit of DNA polymerase III is the ␣ subunit (129.9 kDa) product, , and therefore differs from Escherichia coli encoded by dnaE; it lacks a proofreading exonuclease (7). The dnaX that produces two proteins (␥ and ). Nonetheless, Ј Ј ⑀ ␦␦ proofreading 3 –5 -exonuclease activity is contained in the the A. aeolicus proteins form a complex. The dnaN ␣ ,␦␦ (27.5 kDa) subunit (dnaQ) that forms a 1:1 complex with (8  gene encoding the clamp was identified, and the ␣Ϫ⑀  9). -
Dissection of Exopolysaccharide Biosynthesis in Kozakia Baliensis Julia U
Brandt et al. Microb Cell Fact (2016) 15:170 DOI 10.1186/s12934-016-0572-x Microbial Cell Factories RESEARCH Open Access Dissection of exopolysaccharide biosynthesis in Kozakia baliensis Julia U. Brandt, Frank Jakob*, Jürgen Behr, Andreas J. Geissler and Rudi F. Vogel Abstract Background: Acetic acid bacteria (AAB) are well known producers of commercially used exopolysaccharides, such as cellulose and levan. Kozakia (K.) baliensis is a relatively new member of AAB, which produces ultra-high molecular weight levan from sucrose. Throughout cultivation of two K. baliensis strains (DSM 14400, NBRC 16680) on sucrose- deficient media, we found that both strains still produce high amounts of mucous, water-soluble substances from mannitol and glycerol as (main) carbon sources. This indicated that both Kozakia strains additionally produce new classes of so far not characterized EPS. Results: By whole genome sequencing of both strains, circularized genomes could be established and typical EPS forming clusters were identified. As expected, complete ORFs coding for levansucrases could be detected in both Kozakia strains. In K. baliensis DSM 14400 plasmid encoded cellulose synthase genes and fragments of truncated levansucrase operons could be assigned in contrast to K. baliensis NBRC 16680. Additionally, both K. baliensis strains harbor identical gum-like clusters, which are related to the well characterized gum cluster coding for xanthan synthe- sis in Xanthomanas campestris and show highest similarity with gum-like heteropolysaccharide (HePS) clusters from other acetic acid bacteria such as Gluconacetobacter diazotrophicus and Komagataeibacter xylinus. A mutant strain of K. baliensis NBRC 16680 lacking EPS production on sucrose-deficient media exhibited a transposon insertion in front of the gumD gene of its gum-like cluster in contrast to the wildtype strain, which indicated the essential role of gumD and of the associated gum genes for production of these new EPS. -
DNA POLYMERASE III HOLOENZYME: Structure and Function of a Chromosomal Replicating Machine
Annu. Rev. Biochem. 1995.64:171-200 Copyright Ii) 1995 byAnnual Reviews Inc. All rights reserved DNA POLYMERASE III HOLOENZYME: Structure and Function of a Chromosomal Replicating Machine Zvi Kelman and Mike O'Donnell} Microbiology Department and Hearst Research Foundation. Cornell University Medical College. 1300York Avenue. New York. NY }0021 KEY WORDS: DNA replication. multis ubuni t complexes. protein-DNA interaction. DNA-de penden t ATPase . DNA sliding clamps CONTENTS INTRODUCTION........................................................ 172 THE HOLO EN ZYM E PARTICL E. .......................................... 173 THE CORE POLYMERASE ............................................... 175 THE � DNA SLIDING CLAM P............... ... ......... .................. 176 THE yC OMPLEX MATCHMAKER......................................... 179 Role of ATP . .... .............. ...... ......... ..... ............ ... 179 Interaction of y Complex with SSB Protein .................. ............... 181 Meclwnism of the yComplex Clamp Loader ................................ 181 Access provided by Rockefeller University on 08/07/15. For personal use only. THE 't SUBUNIT . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 182 Annu. Rev. Biochem. 1995.64:171-200. Downloaded from www.annualreviews.org AS YMMETRIC STRUC TURE OF HOLO EN ZYM E . 182 DNA PO LYM ER AS E III HOLO ENZ YME AS A REPLIC ATING MACHINE ....... 186 Exclwnge of � from yComplex to Core .................................... 186 Cycling of Holoenzyme on the LaggingStrand -
Complete Genome Sequence and Methylome Analysis of Beggiatoa Leptomitoformis Strains D-401 and D-402
Complete Genome Sequence and Methylome Analysis of Beggiatoa leptomitoformis strains D-401 and D-402. Alexey Fomenkova*, Zhiyi Suna Tamas Vinczea, Maria Orlova b, Brian P. Antona, Margarita Yu. Grabovichb, Richard J. Roberts a. aNew England Biolabs, Ipswich, MA, USA bDepartment of Biochemistry and Cell Physiology, Voronezh State University, Voronezh, Russia. *Correspondence: [email protected] The taxonomy of Beggiatoa genus is still a work in progress. Despite many morphotypes of the Beggiatoa genus having been described in the literature, only one species, B. alba has been validated until now. In 2016, we described a second species, B. leptomitoformis. Two strains of B. leptomitoformis D-401 and D-402 have been isolated from different regions of Russia. They differ in their morphology and physiology and especially their ability to grow lithotrophically in the presence of thiosulfate. While B. leptomitoformis D-402 is able to accumulate elemental sulfur, strain D-401 cannot. We performed genomic sequencing of these two strains using the PacBio SMRT platform and assembled the reads into two complete circular genomes: B. leptomitoformis D-401 with 4,266,286 bp and D-402 with 4,265,296 bp. Both genome sequences have been deposited in GenBank with accession numbers CP018889 and CP012373 respectively (1). Surprisingly these two genomes showed almost 99% identity. The preliminary analysis of metabolic operons of thiosulfate oxidation (soxAXBZY) and autotrophic assimilation of CO2 (the genes encoded for the enzymes of the Calvin-Bassham cycle) in both strains did not reveal any noticeable differences. One advantage of the PacBio sequencing platform is its ability to detect the epigenetic state of the sequenced DNA, which allows for the identification of modified nucleotides and the corresponding motifs in which they occur. -
Gene Disruption of a G4-DNA-Dependent Nuclease In
Proc. Natl. Acad. Sci. USA Vol. 92, pp. 6002-6006, June 1995 Genetics Gene disruption of a G4-DNA-dependent nuclease in yeast leads to cellular senescence and telomere shortening (guanine-quartet/KEMI/SEPI/checkpoint/meiosis) ZHIPING Liu, ARNOLD LEE, AND WALTER GILBERT Department of Molecular and Cellular Biology, The Biological Laboratories, 16 Divinity Avenue, Harvard University, Cambridge, MA 02138-2092 Contributed by Walter Gilbert, April 3, 1995 ABSTRACT The yeast gene KEMI (also named (11). A highly conserved feature is that one of the strands is SEPI/DST2/XRNI/RAR5) produces a G4-DNA-dependent very G-rich and always exists as a 3' overhang at the end of the nuclease that binds to G4 tetraplex DNA structure and cuts in chromosome. Telomeres carry out two essential functions. a single-stranded region 5' to the G4 structure. G4-DNA They protect, or stabilize, the ends of linear chromosomes, generated from yeast telomeric oligonucleotides competitively since artificially generated ends (by means of mechanical inhibits the cleavage reaction, suggesting that this enzyme sheering, x-ray irradiation, or enzymatic cleavage) are very may interact with yeast telomeres in vivo. Homozygous dele- unstable (12-14). Furthermore, they serve to circumvent the tions ofthe KEMI gene in yeast block meiosis at the pachytene incomplete DNA replication at the ends of linear chromo- stage, which is consistent with the hypothesis that G4 tetra- somes (15) by extending the G-rich strand through a de novo plex DNA may be involved in homologous chromosome pairing synthesis catalyzed by telomerase to counterbalance the se- during meiosis. We conjectured that the mitotic defects of quence loss at an end in lagging-strand replication (16, 17). -
Diguanylate Cyclase Null Mutant Reveals That C-Di-GMP Pathway Regulates the Motility and Adherence of the Extremophile Bacterium Acidithiobacillus Caldus
RESEARCH ARTICLE Diguanylate Cyclase Null Mutant Reveals That C-Di-GMP Pathway Regulates the Motility and Adherence of the Extremophile Bacterium Acidithiobacillus caldus Matías Castro1, Shelly M. Deane2, Lina Ruiz1, Douglas E. Rawlings2, Nicolas Guiliani1* 1 Laboratorio de Comunicación Bacteriana, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Santiago, Chile, 2 Department of Microbiology, Stellenbosch University, Stellenbosch, South Africa * [email protected] Abstract OPEN ACCESS An understanding of biofilm formation is relevant to the design of biological strategies to im- prove the efficiency of the bioleaching process and to prevent environmental damages Citation: Castro M, Deane SM, Ruiz L, Rawlings DE, Guiliani N (2015) Diguanylate Cyclase Null Mutant caused by acid mine/rock drainage. For this reason, our laboratory is focused on the char- Reveals That C-Di-GMP Pathway Regulates the acterization of the molecular mechanisms involved in biofilm formation in different biomining Motility and Adherence of the Extremophile bacteria. In many bacteria, the intracellular levels of c-di-GMP molecules regulate the transi- Bacterium Acidithiobacillus caldus. PLoS ONE 10(2): tion from the motile planktonic state to sessile community-based behaviors, such as biofilm e0116399. doi:10.1371/journal.pone.0116399 development, through different kinds of effectors. Thus, we recently started a study of the Academic Editor: Melanie R. Mormile, Missouri c-di-GMP pathway in several biomining bacteria including Acidithiobacillus caldus. University of Science and Technology, UNITED STATES C-di-GMP molecules are synthesized by diguanylate cyclases (DGCs) and degraded by phosphodiesterases (PDEs). We previously reported the existence of intermediates in- Received: September 17, 2014 volved in c-di-GMP pathway from different Acidithiobacillus species. -
Distinct Co-Evolution Patterns of Genes Associated to DNA Polymerase III Dnae and Polc Stefan Engelen1,2, David Vallenet2, Claudine Médigue2 and Antoine Danchin1,3*
Engelen et al. BMC Genomics 2012, 13:69 http://www.biomedcentral.com/1471-2164/13/69 RESEARCHARTICLE Open Access Distinct co-evolution patterns of genes associated to DNA polymerase III DnaE and PolC Stefan Engelen1,2, David Vallenet2, Claudine Médigue2 and Antoine Danchin1,3* Abstract Background: Bacterial genomes displaying a strong bias between the leading and the lagging strand of DNA replication encode two DNA polymerases III, DnaE and PolC, rather than a single one. Replication is a highly unsymmetrical process, and the presence of two polymerases is therefore not unexpected. Using comparative genomics, we explored whether other processes have evolved in parallel with each polymerase. Results: Extending previous in silico heuristics for the analysis of gene co-evolution, we analyzed the function of genes clustering with dnaE and polC. Clusters were highly informative. DnaE co-evolves with the ribosome, the transcription machinery, the core of intermediary metabolism enzymes. It is also connected to the energy-saving enzyme necessary for RNA degradation, polynucleotide phosphorylase. Most of the proteins of this co-evolving set belong to the persistent set in bacterial proteomes, that is fairly ubiquitously distributed. In contrast, PolC co- evolves with RNA degradation enzymes that are present only in the A+T-rich Firmicutes clade, suggesting at least two origins for the degradosome. Conclusion: DNA replication involves two machineries, DnaE and PolC. DnaE co-evolves with the core functions of bacterial life. In contrast PolC co-evolves with a set of RNA degradation enzymes that does not derive from the degradosome identified in gamma-Proteobacteria. This suggests that at least two independent RNA degradation pathways existed in the progenote community at the end of the RNA genome world.