1
|
Ciufolini MA, Lefranc D. Micrococcin P1: Structure, biology and synthesis. Nat Prod Rep 2010; 27:330-42. [DOI: 10.1039/b919071f] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
2
|
Amin MM, Zilles JL, Greiner J, Charbonneau S, Raskin L, Morgenroth E. Influence of the antibiotic erythromycin on anaerobic treatment of a pharmaceutical wastewater. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2006; 40:3971-7. [PMID: 16830570 DOI: 10.1021/es060428j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A laboratory-scale anaerobic sequencing batch reactor was used to treat a model substrate mixture representing pharmaceutical wastewater at an organic loading rate of 2.9 g COD/(L d). After reaching stable operation the reactor was first exposed to low (1 mg/L) and, subsequently, to high (200 mg/L) concentrations of the antibiotic erythromycin. The addition of low levels of erythromycin resulted in a significant but limited reduction of biogas production by 5% and the higher level of erythromycin did not impact biogas production further, suggesting that a substantial fraction of the microbial populations in the ASBR were resistant to the antibiotic. Effluent soluble COD could not be accounted for in measured volatile fatty acids, perhaps suggesting the production of soluble microbial products. In batch tests evaluating the specific methanogenic activity, conversion of the model substrate mixture was only slightly affected by the presence of erythromycin. However, the conversion of butyric acid was inhibited when erythromycin was present. After 47 days of exposure to erythromycin, the conversion of butyric acid was inhibited to a lesser extent, suggesting the development of antibiotic resistance in the biomass. Exposure to antibiotics can affect specific substrate degradation pathways, leading to the accumulation of volatile fatty acids, soluble microbial products, and potentially to overall system instabilities.
Collapse
Affiliation(s)
- Mohammad M Amin
- Department of Civil and Environment Engineering and Department of Animal Sciences, University of Illinois at Urbana-Champaign, 205 North Mathews, Illinois 61801, USA
| | | | | | | | | | | |
Collapse
|
3
|
Ruggero D, Creti R, Londei P. In vitro translation of archaeal natural mRNAs at high temperature. FEMS Microbiol Lett 1993. [DOI: 10.1111/j.1574-6968.1993.tb06009.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
4
|
Chapter 16 Structure and function of methanogen genes. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/s0167-7306(08)60265-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
5
|
Chapter 13 Translation in archaea. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/s0167-7306(08)60262-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
6
|
Mankin AS, Garrett RA. Chloramphenicol resistance mutations in the single 23S rRNA gene of the archaeon Halobacterium halobium. J Bacteriol 1991; 173:3559-63. [PMID: 2045374 PMCID: PMC207972 DOI: 10.1128/jb.173.11.3559-3563.1991] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
A broad range of antibiotics affecting protein biosynthesis were screened for their ability to inhibit growth of the archaeon Halobacterium halobium. Only a few drugs, including chloramphenicol, produced inhibitory effects. Mutants which showed increased resistance to chloramphenicol were isolated; of the nine tested, eight exhibited a C----U transition at position 2471 and the ninth had an A----C transversion at position 2088 of 23S rRNA. A double mutant containing both C----U (position 2471) and A----C (position 2088) mutations was isolated, but the level of its chloramphenicol resistance did not exceed that of either single-point mutant. Inferences are made concerning the functional significance of the conserved nucleotides in rRNAs.
Collapse
Affiliation(s)
- A S Mankin
- Belozersky Laboratory of Molecular Biology and Bioorganic Chemistry, Moscow State University, USSR
| | | |
Collapse
|
7
|
Catani MV, Altamura S, Londei P. Antibiotic sensitivity of the ribosomes of the ultra-thermophilic archaebacterium Pyrococcus woesei. FEMS Microbiol Lett 1990. [DOI: 10.1111/j.1574-6968.1990.tb13990.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
|
8
|
Londei P, Altamura S, Huber R, Stetter KO, Cammarano P. Ribosomes of the extremely thermophilic eubacterium Thermotoga maritima are uniquely insensitive to the miscoding-inducing action of aminoglycoside antibiotics. J Bacteriol 1988; 170:4353-60. [PMID: 3410830 PMCID: PMC211449 DOI: 10.1128/jb.170.9.4353-4360.1988] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Poly(U)- and poly(UG)-programmed cell-free systems were developed from the extreme thermophilic, anaerobic eubacterium Thermotoga maritima, and their susceptibility to aminoglycoside and other antibiotics was assayed at a temperature (75 degrees C) close to the physiological optimum (80 degrees C) for cell growth and in vitro polypeptide synthesis, using a Bacillus stearothermophilus system as the reference. The synthetic capacity of the Thermotoga assay mixture was abolished by the eubacterium-targeted drugs chloramphenicol, thiostrepton, and kirromycin. However, streptomycin, the disubstituted 2-deoxystreptamines (kanamycin, gentamicin, neomycin, and paromomycin), and the monosubstituted 2-deoxystreptamine (hygromycin) all failed to promote translational misreading of poly(U) on Thermotoga ribosomes; they also failed to block polyphenylalanine synthesis at a low (less than 10(-4) M) concentration and did not inhibit Thermotoga cell growth at a high (10 micrograms/ml) concentration even though Thermotoga ribosomes possess the 16S rRNA sequences required for aminoglycoside action. In contrast to the other eubacteria, Thermotoga elongation factor G was also refractory to the steroid inhibitor of peptidyl-tRNA translocation fusidic acid.
Collapse
Affiliation(s)
- P Londei
- Dipartimento di Biopatologia Umana, Universitá di Roma I, Policlinico Umberto I, Italy
| | | | | | | | | |
Collapse
|
9
|
Londei P, Altamura S, Sanz JL, Amils R. Aminoglycoside-induced mistranslation in thermophilic archaebacteria. MOLECULAR & GENERAL GENETICS : MGG 1988; 214:48-54. [PMID: 2465484 DOI: 10.1007/bf00340178] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The effect of selected aminoglycoside antibiotics on the translational accuracy of poly(U) programmed ribosomes derived from the thermophilic archaebacteria Thermoplasma acidophilum, Sulfolobus solfataricus, Thermococcus celer and Desulfurococcus mobilis has been determined. Under optimum temperature and ionic conditions for polyphenylalanine synthesis, the four species investigated are found to be markedly diverse in their response to the miscoding-inducing action of aminoglycoside antibiotics. T. acidophilum is sensitive to all of the compounds tested except streptomycin; S. solfataricus responds to paromomycin and to hygromycin B; T. celer is only affected by neomycin, and D. mobilis is refractory to all drugs. The only feature shared by the four species under study, and by all archaebacteria so far investigated, is their complete insensitivity to streptomycin. The structural and phylogenetic implications of the remarkable diversity encountered among archaebacterial ribosomes in their susceptibility to aminoglycosides are discussed.
Collapse
Affiliation(s)
- P Londei
- Dipartimento di Biopatologia Umana, Università di Roma, Policlinico Umberto I, Italy
| | | | | | | |
Collapse
|
10
|
Altamura S, Sanz J, Amils R, Cammarano P, Londei P. The Antibiotic Sensitivity Spectra of Ribosomes from the Thermoproteales: Phylogenetic Depth and Distribution of Antibiotic Binding Sites. Syst Appl Microbiol 1988. [DOI: 10.1016/s0723-2020(88)80004-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
11
|
Leffers H, Kjems J, Ostergaard L, Larsen N, Garrett RA. Evolutionary relationships amongst archaebacteria. A comparative study of 23 S ribosomal RNAs of a sulphur-dependent extreme thermophile, an extreme halophile and a thermophilic methanogen. J Mol Biol 1987; 195:43-61. [PMID: 3116261 DOI: 10.1016/0022-2836(87)90326-3] [Citation(s) in RCA: 161] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The 23 S RNA genes representative of each of the main archaebacterial subkingdoms, Desulfurococcus mobilis an extreme thermophile, Halococcus morrhuae an extreme halophile and Methanobacterium thermoautotrophicum a thermophilic methanogen, were cloned and sequenced. The inferred RNA sequences were aligned with all the available 23 S-like RNAs of other archaebacteria, eubacteria/chloroplasts and the cytoplasm of eukaryotes. Universal secondary structural models containing six major structural domains were refined, and extended, using the sequence comparison approach. Much of the present structure was confirmed but six new helices were added, including one that also exists in the eukaryotic 5.8 S RNA, and extensions were made to several existing helices. The data throw doubt on whether the 5' and 3' ends of the 23 S RNA interact, since no stable helix can form in either the extreme thermophile or the methanogen RNA. A few secondary structural features, specific to the archaebacterial RNAs were identified; two of these were supported by a comparison of the archaebacterial RNA sequences, and experimentally, using chemical and ribonuclease probes. Seven tertiary structural interactions, common to all 23 S-like RNAs, were predicted within unpaired regions of the secondary structural model on the basis of co-variation of nucleotide pairs; two lie in the region of the 23 S RNA corresponding to 5.8 S RNA but they are not conserved in the latter. The flanking sequences of each of the RNAs could base-pair to form long RNA processing stems. They were not conserved in sequence but each exhibited a secondary structural feature that is common to all the archaebacterial stems for both 16 S and 23 S RNAs and constitutes a processing site. Kingdom-specific nucleotides have been identified that are associated with antibiotic binding sites at functional centres in 23 S-like RNAs: in the peptidyl transferase centre (erythromycin-domain V) the archaebacterial RNAs classify with the eukaryotic RNAs; at the elongation factor-dependent GTPase centre (thiostrepton-domain II) they fall with the eubacteria, and at the putative amino acyl tRNA site (alpha-sarcin-domain VI) they resemble eukaryotes. Two of the proposed tertiary interactions offer a structural explanation for how functional coupling of domains II and V occurs at the peptidyl transferase centre. Phylogenetic trees were constructed for the archaebacterial kingdom, and for the other two kingdoms, on the basis of the aligned 23 S-like RNA sequences.(ABSTRACT TRUNCATED AT 400 WORDS)
Collapse
Affiliation(s)
- H Leffers
- Biostructural Chemistry, Kemisk Institut, Aarhus Universitet, Denmark
| | | | | | | | | |
Collapse
|
12
|
Sanz JL, Altamura S, Mazziotti I, Amils R, Cammarano P, Londei P. Unique antibiotic sensitivity of an in vitro polypeptide synthesis system from the archaebacterium Thermoplasma acidophilum. Phylogenetic implications. ACTA ACUST UNITED AC 1987. [DOI: 10.1007/bf00331605] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
13
|
Londei P, Sanz JL, Altamura S, Hummel H, Cammarano P, Amils R, Böck A, Wolf H. Unique antibiotic sensitivity of archaebacterial polypeptide elongation factors. J Bacteriol 1986; 167:265-71. [PMID: 3087957 PMCID: PMC212870 DOI: 10.1128/jb.167.1.265-271.1986] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The antibiotic sensitivity of the archaebacterial factors catalyzing the binding of aminoacyl-tRNA to ribosomes (elongation factor Tu [EF-Tu] for eubacteria and elongation factor 1 [EF1] for eucaryotes) and the translocation of peptidyl-tRNA (elongation factor G [EF-G] for eubacteria and elongation factor 2 [EF2] for eucaryotes) was investigated by using two EF-Tu and EF1 [EF-Tu(EF1)]-targeted drugs, kirromycin and pulvomycin, and the EF-G and EF2 [EF-G(EF2)]-targeted drug fusidic acid. The interaction of the inhibitors with the target factors was monitored by using polyphenylalanine-synthesizing cell-free systems. A survey of methanogenic, halophilic, and sulfur-dependent archaebacteria showed that elongation factors of organisms belonging to the methanogenic-halophilic and sulfur-dependent branches of the "third kingdom" exhibit different antibiotic sensitivity spectra. Namely, the methanobacterial-halobacterial EF-Tu(EF1)-equivalent protein was found to be sensitive to pulvomycin but insensitive to kirromycin, whereas the methanobacterial-halobacterial EF-G(EF2)-equivalent protein was found to be sensitive to fusidic acid. By contrast, sulfur-dependent thermophiles were unaffected by all three antibiotics, with two exceptions; Thermococcus celer, whose EF-Tu(EF1)-equivalent factor was blocked by pulvomycin, and Thermoproteus tenax, whose EF-G(EF2)-equivalent factor was sensitive to fusidic acid. On the whole, the results revealed a remarkable intralineage heterogeneity of elongation factors not encountered within each of the two reference (eubacterial and eucaryotic) kingdoms.
Collapse
|
14
|
Londei P, Altamura S, Cammarano P, Petrucci L. Differential features of ribosomes and of poly(U)-programmed cell-free systems derived from sulphur-dependent archaebacterial species. EUROPEAN JOURNAL OF BIOCHEMISTRY 1986; 157:455-62. [PMID: 3087750 DOI: 10.1111/j.1432-1033.1986.tb09689.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The properties of poly(U)-directed cell-free systems developed from the sulphur-dependent, thermophilic archaebacteria Desulfurococcus mobilis, Thermoproteus tenax, Sulfolobus solfataricus, Thermococcus celer and Thermoplasma acidophilum have been compared. All systems are truly thermophilic in requiring incubation at temperatures close to the physiological optimum for cell growth. Under optimized conditions the error frequency in tRNA selection is less than 0.4% at 80 degrees C, and synthetic efficiencies (Phe residues polymerized per ribosome in 40 min) span from 4 for Tp. tenax, to 10 for Tc. celer, to 20-25 for D. mobilis and T. acidophilum and to 40 for S. solfataricus. According to requirements for polypeptide synthesis and to degree of stability of the ribosomal subunits' association, sulphur-dependent thermophiles cluster into two groups. Group I organisms (D. mobilis, Tp. tenax, S. solfataricus) harbour 70-S monomers composed of weakly associated subunits, whose poly(Phe)-synthesizing capacity is totally dependent on added spermine while being drastically inhibited by monovalent cations. Group II organisms (Tc. celer and T. acidophilum) contain 70-S particles composed of tightly bonded subunits, whose synthetic capacity is independent of spermine while being totally dependent on monovalent cations. Spermine promotes poly(Phe) synthesis on ribosomes of group I organisms by converting the peptidyltransferase center into an active conformation, while monovalent cations are inhibitory by preventing the interaction between the free ribosomal subunits. The closeness between Tc. celer and T. acidophilum ribosomes provides new insight on the phylogenetic placement of Thermococcaceae.
Collapse
|