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This Is an Open Access-Journal's PDF Published in Chertkov, O., Sikorski Complete genome sequence of Aminobacterium colombiense type strain (ALA-1T) Authors Chertkov, Olga; Sikorski, Johannes; Brambilla, Evelyne; Lapidus, Alla; Copeland, Alex; Glavina Del Rio, Tijana; Nolan, Matt; Lucas, Susan; Tice, Hope; Cheng, Jan-Fang; Han, Cliff; Detter, John C.; Bruce, David; Tapia, Roxanne; Goodwin, Lynne; Pitluck, Sam; Liolios, Konstantinos; Ivanova, Natalia; Mavromatis, Konstantinos; Ovchinnikova, Galina; Pati, Amrita; Chen, Amy; Palaniappan, Krishna; Land, Miriam; Hauser, Loren; Chang, Yun- Juan; Jeffries, Cynthia D.; Spring, Stefan; Rohde, Manfred; Göker, Markus; Bristow, James; Eisen, Jonathan A.; Markowitz, Victor; Hugenholtz, Philip; Kyrpides, Nikos C.; Klenk, Hans-Peter Citation Complete genome sequence of Aminobacterium colombiense type strain (ALA-1T) 2010, 2 (3):280 Standards in Genomic Sciences DOI 10.4056/sigs.902116 Journal Standards in Genomic Sciences Rights Archived with thanks to Standards in Genomic Sciences Download date 26/09/2021 00:40:08 Link to Item http://hdl.handle.net/2384/297243 This is an Open Access-journal’s PDF published in Chertkov, O., Sikorski, J., Brambilla, E., Lapidus, A., Copeland, A., del Rio, T.G., Nolan, M., Lucas, S., Tice, H., Cheng, J.-F., Han, C., Detter, J.C., Bruce, D., Tapia, R., Goodwin, L., Pitluck, S., Liolios, K., Ivanova, N., Mavromatis, K., Ovchinnikova, G., Pati, A., Chen, A., Palaniappan, K., Land, M., Hauser, L., Chang, Y.-J., Jeffries, C.D., Spring, S., Rohde, M., Göker, M., Bristow, J., Eisen, J.A., Markowitz, V., Hugenholtz, P., Kyrpides, N.C., Klenk, H.-P. Complete genome sequence of Aminobacterium colombiense type strain (ALA-1T) (2010) Standards in Genomic Sciences, 2 (3), pp. 280-289 Standards in Genomic Sciences (2010) 2:280-289 DOI:10.4056/sigs.902116 Complete genome sequence of Aminobacterium T colombiense type strain (ALA-1 ) Olga Chertkov1,2, Johannes Sikorski3, Evelyne Brambilla3, Alla Lapidus1, Alex Copeland1, Tijana Glavina Del Rio1, Matt Nolan1, Susan Lucas1, Hope Tice1, Jan-Fang Cheng1, Cliff Han1,4, John C. Detter1,4, David Bruce1,4, Roxanne Tapia1,4, Lynne Goodwin1,4, Sam Pitluck1, Konstantinos Liolios1, Natalia Ivanova1, Konstantinos Mavromatis1, Galina Ovchinnikova1, Amrita Pati1, Amy Chen5, Krishna Palaniappan5, Miriam Land1,2, Loren Hauser1,2, Yun-Juan Chang1,2, Cynthia D. Jeffries1,2, Stefan Spring3, Manfred Rohde6, Markus Göker3, James Bristow1, Jonathan A. Eisen1,7, Victor Markowitz5, Philip Hugenholtz1, Nikos C. Kyrpides1, and Hans-Peter Klenk3* 1 DOE Joint Genome Institute, Walnut Creek, California, USA 2 Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA 3 DSMZ – German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany 4 Los Alamos National Laboratory, Bioscience Division, Los Alamos, New Mexico, USA 5 Biological Data Management and Technology Center, Lawrence Berkeley National Laboratory, Berkeley, California, USA 6 HZI – Helmholtz Centre for Infection Research, Braunschweig, Germany 7 University of California Davis Genome Center, Davis, California, USA *Corresponding author: Hans-Peter Klenk Keywords: strictly anaerobic, fermentation of amino acids, Gram-negative staining, syntrophic organism, Synergistaceae, GEBA Aminobacterium colombiense Baena et al. 1999 is the type species of the genus Aminobacte- rium. This genus is of large interest because of its isolated phylogenetic location in the family Synergistaceae, its strictly anaerobic lifestyle, and its ability to grow by fermentation of a li- mited range of amino acids but not carbohydrates. Here we describe the features of this or- ganism, together with the complete genome sequence and annotation. This is the second completed genome sequence of a member of the family Synergistaceae and the first genome sequence of a member of the genus Aminobacterium. The 1,980,592 bp long genome with its 1,914 protein-coding and 56 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. Introduction Strain ALA-1T (= DSM 12261) is the type strain of obtained from anaerobic habitats, e.g., from anae- the species Aminobacterium colombiense, which is robic municipal solid waste samples in France [5], the type species of the genus Aminobacterium from a biogas fermentation enrichment culture in [1,2]. The name of the genus relates to its ability to China (GU476615), from a swine wastewater ferment amino acids and the species name refers anaerobic digestion in a UASB reactor in China to origin of the isolate, Columbia [1]. Currently, (FJ535518), and from a mesophilic anaerobic BSA the genus Aminobacterium consists of only two digester in Japan [6], suggesting quite a substan- species [1,3,4]. Strain ALA-1T has been isolated tial contribution of Aminobacterium to anaerobic from an anaerobic dairy wastewater lagoon in prokaryotic communities. The type strain of the 1998 or before [1]. At the moment, strain ALA-1T only other species in the genus, A. mobile [3] is the only known isolate of this species. Highly shares 95% 16S rRNA sequence identity with A. similar (98%) nearly complete (>1,400 bp) uncul- colombiense, whereas the type strains of the other tured 16S gene clone sequences were frequently species in the family Synergistaceae share be- The Genomic Standards Consortium Chertkov et al. tween 84.3 and 88.3% 16S rRNA sequence identi- Classification and features ty [7]. Environmental samples and metagenomic Figure 1 shows the phylogenetic neighborhood of surveys detected only one significantly similar A. colombiense ALA-1T in a 16S rRNA based tree. phylotype (BABF01000111, 92% sequence simi- The sequences of the three identical copies of the larity) in a human gut microbiome [7], with all 16S rRNA gene in the genome differ by 14 nucleo- other phylotypes sharing less than 84% 16S rRNA tides (0.9%) from the previously published 16S gene sequence identity, indicating a rather limited rRNA sequence generated from DSM 12661 general ecological importance of the members of (AF069287). which contains 3 ambiguous base the genus Aminobacterium (status April 2010). calls. These differences are most likely due to se- Here we present a summary classification and a quencing errors in AF069287. set of features for A. colombiense ALA-1T, together with the description of the complete genomic se- quencing and annotation. Figure 1. Phylogenetic tree highlighting the position of A. colombiense ALA-1T relative to the other type strains within the phylum Synergistetes. The tree was inferred from 1,282 aligned characters [8,9] of the 16S rRNA gene sequence under the maximum likelihood criterion [10] and rooted in accordance with the current taxonomy [11]. The branches are scaled in terms of the expected number of substitutions per site. Numbers above branches are support values from 250 bootstrap replicates [12] if larger than 60%. Lineages with type strain genome se- quencing projects registered in GOLD [13] are shown in blue, published genomes in bold, e.g. the recently pub- lished GEBA genome of Thermanaerovibrio acidaminovorans [14]. The cells are rod-like, occasionally slightly curved glucose, saccharose, ribose, xylose, cellobiose, mel- with 3-4 µm in length and 0.2-0.3 µm in width (Fig- lobiose, maltose, galactose, mannose, arabinose, ure 2 and Table 1) [1]. The colonies are up to 1.0 rhamnose, lactose, sorbose and mannitol), gelatin, mm in diameter and are round, smooth, lens- casein, glycerol, ethanol, acetate, propionate, buty- shaped, and white [1]. Strain ALA-1T requires yeast rate, lactate, citrate, fumarate, malate, succinate extract for growth and ferments serine, glycine, and the other amino acids tested are not utilized threonine, and pyruvate in its presence [1]. Poor [1]. growth is obtained on casamino acids, peptone, bi- As typical for anoxic habitats, strain ALA-1T is en- otrypcase, cysteine and -ketoglutarate [1]. The gaged in syntrophic interactions: alanine, gluta- fermentation and end-products include acetate and mate, valine, isoleucine, leucine, methionine, aspar- H2 α - tate and malate are oxidized only in the presence of ketoglutarate fermentation. Carbohydrates (such as the hydrogenotroph, Methanobacterium formici- , and also propionate in the case of α http://standardsingenomics.org 281 Aminobacterium colombiense type strain (ALA-1T) cum, strain DSM 1525 [1]. In addition, the utiliza- 1), where A. thermoterrenum is non-motile [22] -ketoglutarate are but A. mobile is motile by means of lateral flagella also improved in the presence of M. formicicum [1]. [23]. In fact, the phenotype of non-motility versus Antion 80% of cysteine, hydrogen threonine atmosphere and (suppliedα as H2-CO, motility by means of lateral flagella is heteroge- (80:20) at 2 bar pressure) inhibits growth of strain neously distributed among the organisms de- ALA-1T -ketoglutarate, whereas picted in Figure 1. This may suggest that the last glycine degradation is not affected [1]. Serine and common ancestor of the group shown in Figure 1 pyruvateon degradation threonine and are αpartially affected by the was motile by flagella and that the selection pres- presence of hydrogen. Sulfate, thiosulfate, elemen- sure for a functioning flagella might be currently tal sulfur, sulfite, nitrate, and fumarate are not uti- more relaxed in this group, leading in individual lized as electron acceptors [1]. Strain ALA-1T does strains to mutational inactivation of the flagella. not perform the Stickland reaction when alanine is Interestingly, the annotation of the genome does provided as an electron donor and glycine, serine, not give any indication of the presence of any arginine or proline are provided as electron accep- genes related to flagellar assembly. The only genes tor. related to cellular motility refer to type II secreto- As noted above, alanine is oxidized only in the ry pathway and to pilus assembly. This is surpris- presence of the hydrogenotroph M. formicicum, ing, as it is hardly probable that strain ALA-1T lost which utilizes the produced H2 [1]. In the absence all genes for flagellar assembly after the evolutio- T of an H2-consuming organism, the H2 partial pres- nary separation of strain ALA-1 and its closely sure would rapidly reach a level that thermody- related sister species A. mobile from their last namically inhibits further fermentation [21].
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