Abstract:
:The TatA and TatB proteins are essential components of the twin arginine protein translocation pathway in Escherichia coli. C-terminal truncation analysis of the TatA protein revealed that a plasmid-expressed TatA protein shortened by 40 amino acids is still fully competent to support protein translocation. Similar truncation analysis of TatB indicated that the final 30 residues of TatB are dispensable for function. Further deletion experiments with TatB indicated that removal of even 70 residues from its C terminus still allowed significant transport. These results imply that the transmembrane and amphipathic helical regions of TatA and TatB are critical for their function but that the C-terminal domains are not essential for Tat transport activity. A chimeric protein comprising the N-terminal region of TatA fused to the amphipathic and C-terminal domains of TatB supports a low level of Tat activity in a strain in which the wild-type copy of either tatA or tatB (but not both) is deleted.
journal_name
J Bacterioljournal_title
Journal of bacteriologyauthors
Lee PA,Buchanan G,Stanley NR,Berks BC,Palmer Tdoi
10.1128/jb.184.21.5871-5879.2002keywords:
subject
Has Abstractpub_date
2002-11-01 00:00:00pages
5871-9issue
21eissn
0021-9193issn
1098-5530journal_volume
184pub_type
杂志文章abstract::S-Adenosyl-L-methionine:precorrin-2 methyltransferase (SP2MT), which catalyzes the C-20 methylation of precorrin-2 to precorrin-3, was purified to homogeneity from extracts of a recombinant strain of Pseudomonas denitrificans derived from a cobalamin-overproducing strain. Ammonium sulfate fractionation followed by chr...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.172.11.6245-6251.1990
更新日期:1990-11-01 00:00:00
abstract::A characteristic of N2-fixing cyanobacteria in symbiotic associations appears to be release of N2-derived NH4+. The specific activity of the primary ammonium-assimilating enzyme, glutamine synthetase (GS), was found to be three- to fourfold lower in Nostoc sp. strain 7801 grown in symbiotic association with the bryoph...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.169.6.2471-2475.1987
更新日期:1987-06-01 00:00:00
abstract::The mecA-27r gene, which encodes PBP2a-27r, was modified by site-specific mutagenesis, resulting in replacement of the N-terminal membrane anchor with a short chelating peptide (CP-PBP2a-27r). CP-PBP2a-27r retained the same binding affinity for beta-lactam antibiotics as the wild-type enzyme. Approximately 95% pure CP...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.176.5.1539-1541.1994
更新日期:1994-03-01 00:00:00
abstract::The temperate phage TPW22, induced from Lactococcus lactis subsp. cremoris W22, and the evolutionarily interesting integrase of this phage were characterized. Phage TPW22 was propagated lytically on L. lactis subsp. cremoris 3107, which could also be lysogenized by site-specific integration. The attachment site (attP)...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.181.22.7034-7042.1999
更新日期:1999-11-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.180.8.2014-2020.1998
更新日期:1998-04-01 00:00:00
abstract::Mechanisms of Li+ stimulation of proline transport were studied in cells of Escherichia coli 7 and NR70, a mutant of strain 7 lacking adenosine triphosphatase (EC 3.6.1.3). An electrochemical potential difference of Li+ induced in an inward direction of energy-depleted cells caused a transient uptake of proline depend...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.139.2.560-564.1979
更新日期:1979-08-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.183.21.6444-6453.2001
更新日期:2001-11-01 00:00:00
abstract::Whole-genome sequence analysis of Mycobacterium leprae has revealed a limited number of protein-coding genes, with half of the genome composed of pseudogenes and noncoding regions. We previously showed that some M. leprae pseudogenes are transcribed at high levels and that their expression levels change following infe...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00120-09
更新日期:2009-05-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.182.22.6517-6522.2000
更新日期:2000-11-01 00:00:00
abstract::Random Tn917 mutagenesis of Bacillus subtilis followed by selection of lipoic acid auxotrophs led to the isolation of the cysH gene. The gene was sequenced and found to encode a phosphoadenylylsulfate sulfotransferase with a molecular mass of 27 kDa. Expression of lacZ fused to the cysH promoter was repressed by cyste...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.179.3.976-981.1997
更新日期:1997-02-01 00:00:00
abstract::The metabolism of one- and two-carbon compounds by the methylotrophic bacterium Methylobacterium extorquens AM1 involves high carbon flux through the ethylmalonyl coenzyme A (ethylmalonyl-CoA) pathway (EMC pathway). During growth on ethylamine, the EMC pathway operates as a linear pathway carrying the full assimilator...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.02478-14
更新日期:2015-02-15 00:00:00
abstract::MurG is a peripheral membrane protein that is one of the key enzymes in peptidoglycan biosynthesis. The crystal structure of Escherichia coli MurG (S. Ha, D. Walker, Y. Shi, and S. Walker, Protein Sci. 9:1045-1052, 2000) contains a hydrophobic patch surrounded by basic residues that may represent a membrane associatio...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.185.13.3773-3779.2003
更新日期:2003-07-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.171.7.4100-4103.1989
更新日期:1989-07-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.01476-12
更新日期:2013-01-01 00:00:00
abstract:UNLABELLED:It is well established that the RpoN-RpoS sigma factor (σ(54)-σ(S)) cascade plays an essential role in differential gene expression during the enzootic cycle of Borrelia burgdorferi, the causative agent of Lyme disease. The RpoN-RpoS pathway is activated by the response regulator/σ(54)-dependent activator (a...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.01010-15
更新日期:2016-04-28 00:00:00
abstract::Phosphatidylglycerol, the most abundant acidic phospholipid in Escherichia coli, is considered to play specific roles in various cellular processes that are essential for cell viability. A null mutation of pgsA, which encodes phosphatidylglycerophosphate synthase, does indeed confer lethality. However, pgsA null mutan...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.184.19.5418-5425.2002
更新日期:2002-10-01 00:00:00
abstract::Total synthesis of acetate from CO2 by Clostridium acidiurici during fermentations of hypoxanthine has been shown to involve synthesis of glycine from methylenetetrahydrofolate, CO2, and NH3. The glycine is converted to serine by the addition of methylenetetrahydrofolate, and the resulting serine is converted to pyruv...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.140.2.468-478.1979
更新日期:1979-11-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.102.1.30-35.1970
更新日期:1970-04-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.180.5.1207-1214.1998
更新日期:1998-03-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.171.8.4385-4394.1989
更新日期:1989-08-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.147.3.869-874.1981
更新日期:1981-09-01 00:00:00
abstract::The complete nucleotide sequence of the linear plasmid pBD2 from Rhodococcus erythropolis BD2 comprises 210,205 bp. Sequence analyses of pBD2 revealed 212 putative open reading frames (ORFs), 97 of which had an annotatable function. These ORFs could be assigned to six functional groups: plasmid replication and mainten...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.185.17.5269-5274.2003
更新日期:2003-09-01 00:00:00
abstract::Cyclic nucleotide-independent protein kinase (EC 2.7.1.37) activity was found in the nuclear cap organelle, within which ribosomes of zoospores of Blastocladiella emersonii are sequestered. Two protein kinase activities were resolved from the high-salt wash fraction of zoospore ribosomes by selective adsorption to DEA...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.154.3.1467-1471.1983
更新日期:1983-06-01 00:00:00
abstract::A series of R (rough) Salmonella minnesota mutants with rfb, rfe, and rfa mutations leading to various defects in the biosynthesis of cell wall lipopolysaccharide was analyzed as to their enterobacterial common antigen (CA) content. All mutants that had functional rfe genes were CA(+) as is the wild-type parent. This ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.119.3.760-764.1974
更新日期:1974-09-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.114.2.491-498.1973
更新日期:1973-05-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.89.2.343-354.1965
更新日期:1965-02-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.129.3.1281-1288.1977
更新日期:1977-03-01 00:00:00
abstract::Streptomyces davawensis JCM 4913 synthesizes the antibiotic roseoflavin, a structural riboflavin (vitamin B(2)) analog. Here, we report the 9,466,619-bp linear chromosome of S. davawensis JCM 4913 and a 89,331-bp linear plasmid. The sequence has an average G+C content of 70.58% and contains six rRNA operons (16S-23S-5...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.01592-12
更新日期:2012-12-01 00:00:00
abstract::Members of the pPT23A plasmid family of Pseudomonas syringae play an important role in the interaction of this bacterial pathogen with host plants. Complete sequence analysis of several pPT23A family plasmids (PFPs) has provided a glimpse of the gene content and virulence function of these plasmids. We constructed a m...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.187.6.2113-2126.2005
更新日期:2005-03-01 00:00:00
abstract::Streptococcus pneumoniae is the causative agent of multiple diseases, including otitis media, pneumonia, bacteremia, and meningitis. Pneumolysin (Ply), a member of the cholesterol-dependent cytolytic pore-forming toxins, is produced by virtually all clinical isolates of S. pneumoniae, and strains in which the Ply gene...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.01489-08
更新日期:2009-04-01 00:00:00