Sam Dependent Methyltransferase
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Estudo da função do gene kerV de Pseudomonas aeruginosa / Function of Pseudomonas aeruginosa kerV gene
P. aeruginosa PA14 é uma linhagem isolada de queimadura que apresenta vários fatores de patogenicidade comuns no quadro de infecção de hospedeiros filogeneticamente distintos (plantas, mamíferos ou invertebrados). O gene kerV foi revelado numa busca por mutantes atenuados em virulência em uma biblioteca de mutantes por transposons da linhagem PA14 (Rah
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/09/2011
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2. Cloning, expression, purification, crystallization and preliminary X-ray analysis of NodS N-methyltransferase from Bradyrhizobium japonicum WM9
The NodS N-methyltransferase, an enzyme participating in the biosynthesis of the bacterial nodulation (Nod) factor necessary to establish symbiotic nitrogen fixation with a legume plant host, has been crystallized in the apo form as well as in complex with SAH. SAH is a byproduct of SAM degradation during the SAM-dependent methylation reaction.
International Union of Crystallography.
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3. Genetic and sequence analysis of an 8.7-kilobase Pseudomonas denitrificans fragment carrying eight genes involved in transformation of precorrin-2 to cobyrinic acid.
A 8.7-kilobase DNA fragment carrying Pseudomonas denitrificans cob genes has been sequenced. The nucleotide sequence and the genetic analysis revealed that this fragment carries eight different cob genes (cobF to cobM). Six of these genes have the characteristics of translationally coupled genes. cobI has been identified as S-adenosyl-L-methionine (SAM):prec
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4. Crystal Structure of a Putative Methyltransferase from Mycobacterium tuberculosis: Misannotation of a Genome Clarified by Protein Structural Analysis
Bioinformatic analyses of whole genome sequences highlight the problem of identifying the biochemical and cellular functions of many gene products that are at present uncharacterized. The open reading frame Rv3853 from Mycobacterium tuberculosis has been annotated as menG and assumed to encode an S-adenosylmethionine (SAM)-dependent methyltransferase that ca
American Society for Microbiology.
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5. Characterization of an Inducible Chlorophenol O-Methyltransferase from Trichoderma longibrachiatum Involved in the Formation of Chloroanisoles and Determination of Its Role in Cork Taint of Wines
A novel S-adenosyl-l-methionine (SAM)-dependent methyltransferase catalyzing the O methylation of several chlorophenols and other halogenated phenols was purified 220-fold to apparent homogeneity from mycelia of Trichoderma longibrachiatum CECT 20431. The enzyme could be identified in partially purified protein preparations by direct photolabeling with [meth
American Society for Microbiology.
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6. Escherichia coli TehB Requires S-Adenosylmethionine as a Cofactor To Mediate Tellurite Resistance
The Escherichia coli chromosomal determinant for tellurite resistance consists of two genes (tehA and tehB) which, when expressed on a multicopy plasmid, confer resistance to K2TeO3 at 128 μg/ml, compared to the MIC of 2 μg/ml for the wild type. TehB is a cytoplasmic protein which possesses three conserved motifs (I, II, and III) found in S-adenosyl-l-meth
American Society for Microbiology.
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7. Juvenile hormone acid methyltransferase: A key regulatory enzyme for insect metamorphosis
Juvenile hormone (JH) acid methyltransferase (JHAMT) is an enzyme that converts JH acids or inactive precursors of JHs to active JHs at the final step of JH biosynthesis pathway in insects. By fluorescent mRNA differential display, we have cloned a cDNA encoding JHAMT from the corpora allata (CA) of the silkworm, Bombyx mori (BmJHAMT). The BmJHAMT cDNA encod
National Academy of Sciences.
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8. A novel multifunctional O-methyltransferase implicated in a dual methylation pathway associated with lignin biosynthesis in loblolly pine
S-adenosyl-l-methionine (SAM)-dependent O-methyltransferases (OMTs) catalyze the methylation of hydroxycinnamic acid derivatives for the synthesis of methylated plant polyphenolics, including lignin. The distinction in the extent of methylation of lignins in angiosperms and gymnosperms, mediated by substrate-specific OMTs, represents one of the fundamental d
The National Academy of Sciences of the USA.
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9. Cork Taint of Wines: Role of the Filamentous Fungi Isolated from Cork in the Formation of 2,4,6-Trichloroanisole by O Methylation of 2,4,6-Trichlorophenol
Cork taint is a musty or moldy off-odor in wine mainly caused by 2,4,6-trichloroanisole (2,4,6-TCA). We examined the role of 14 fungal strains isolated from cork samples in the production of 2,4,6-TCA by O methylation of 2,4,6-trichlorophenol (2,4,6-TCP). The fungal strains isolated belong to the genera Penicillium (four isolates); Trichoderma (two isolates)
American Society for Microbiology.
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10. Detecting distant homology with Meta-BASIC
Meta-BASIC (http://basic.bioinfo.pl) is a novel sensitive approach for recognition of distant similarity between proteins based on consensus alignments of meta profiles. Specifically, Meta-BASIC compares sequence profiles combined with predicted secondary structure by utilizing several scoring systems and alignment algorithms. In our benchmarking tests, Meta
Oxford University Press.
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11. Novel Biosynthetic Pathway of Castasterone from Cholesterol in Tomato1
Endogenous brassinosteroids (BRs) in tomato (Lycopersicon esculentum) seedlings are known to be composed of C27- and C28-BRs. The biosynthetic pathways of C27-BRs were examined using a cell-free enzyme solution prepared from tomato seedlings that yielded the biosynthetic sequences cholesterol → cholestanol and 6-deoxo-28-norteasterone ↔ 6-deoxo-28-nor-3-
American Society of Plant Biologists.