Discovery of a gene family critical to wyosine base formation in a subset of phenylalanine-specific transfer RNAs.
Authors:Waas WF, de Crécy-Lagard V, Schimmel P,
Journal:J Biol Chem
PubMed ID:16162496
'A large number of post-transcriptional base modifications in transfer RNAs have been described (Sprinzl, M., Horn, C., Brown, M., Ioudovitch, A., and Steinberg, S. (1998) Nucleic Acids Res. 26, 148-153). These modifications enhance and expand tRNA function to increase cell viability. The intermediates and genes essential for base modifications in ... More
Participation of an Endomembrane Cation/H+ Exchanger AtCHX20 in Osmoregulation of Guard Cells.
'Guard cell movement is induced by environmental and hormonal signals that cause changes in turgor through changes in uptake or release of solutes and water. Several transporters mediating these fluxes at the plasma membrane have been characterized, however less is known about transport at endomembranes. CHX20, a member of a ... More
Identification of a receptor-independent activator of G protein signaling (AGS8) in ischemic heart and its interaction with Gbetagamma.
Authors:Sato M, Cismowski MJ, Toyota E, Smrcka AV, Lucchesi PA, Chilian WM, Lanier SM,
Journal:Proc Natl Acad Sci U S A
PubMed ID:16407149
'As part of a broader effort to identify postreceptor signal regulators involved in specific diseases or organ adaptation, we used an expression cloning system in Saccharomyces cerevisiae to screen cDNA libraries from rat ischemic myocardium, human heart, and a prostate leiomyosarcoma for entities that activated G protein signaling in the ... More
Isolation and characterization of cDNAs encoding an enzyme with glucosyltransferase activity for cyclo-DOPA from four o'clocks and feather cockscombs.
Authors:Sasaki N, Wada K, Koda T, Kasahara K, Adachi T, Ozeki Y,
Journal:Plant Cell Physiol
PubMed ID:15695438
cDNAs encoding an enzyme with UDP-glucose:cyclo-DOPA 5-O-glucosyltransferase activity were isolated from four o'clocks and feather cockscombs. Phylogenetic analysis of the amino acid sequences deduced from the cDNAs show that they represent a single subclade distinct from those of other phenylpropanoid and flavonoid glucosyltransferases. Changes in the amount of transcripts of ... More
Molecular and Biochemical Characterization of a Novel Intracellular Invertase from Aspergillus niger with Transfructosylating Activity.
Authors:Goosen C, Yuan XL, van Munster JM, Ram AF, van der Maarel MJ, Dijkhuizen L,
Journal:Eukaryot Cell
PubMed ID:17293485
A novel sub-family of putative intracellular invertase enzymes (glycoside hydrolase family 32) has previously been identified in fungal genomes. Here we report phylogenetic, molecular and biochemical characteristics of SucB, one of two novel intracellular invertases identified in Aspergillus niger. The sucB gene was expressed in Escherichia coli and an invertase ... More