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'The human ov-serpin monocyte neutrophil elastase inhibitor (MNEI) is encoded by a single gene SERPINB1. It is a highly efficient inhibitor of neutrophil granule proteases. Four murine genes with high sequence identity with MNEI were identified and fully sequenced, and these were named EIA, EIB, EIC, and EID. EIA, EIB ... More
Novel Modulation of Neuronal Nicotinic Acetylcholine Receptors by Association with the Endogenous Prototoxin lynx1.
We previously identified lynx1 as a neuronal membrane molecule related to snake alpha-neurotoxins able to modulate nAChRs. Here, we show that lynx1 colocalizes with nAChRs on CNS neurons and physically associates with nAChRs. Single-channel recordings show that lynx1 promotes the largest of three current amplitudes elicited by ACh through alpha(4)beta(2) ... More
Apolipoprotein A-I is a selective target for myeloperoxidase-catalyzed oxidation and functional impairment in subjects with cardiovascular disease.
Authors:Zheng L, Nukuna B, Brennan ML, Sun M, Goormastic M, Settle M, Schmitt D, Fu X, Thomson L, Fox PL, Ischiropoulos H, Smith JD, Kinter M, Hazen SL,
Journal:J Clin Invest
PubMed ID:15314690
In recent studies we demonstrated that systemic levels of protein-bound nitrotyrosine (NO(2)Tyr) and myeloperoxidase (MPO), a protein that catalyzes generation of nitrating oxidants, serve as independent predictors of atherosclerotic risk, burden, and incident cardiac events. We now show both that apolipoprotein A-I (apoA-I), the primary protein constituent of HDL, is ... More
In vivo functional assay of a recombinant aquaporin in Pichia pastoris.
Authors:Daniels MJ, Wood MR, Yeager M,
Journal:Appl Environ Microbiol
PubMed ID:16461705
The water channel protein PvTIP3;1 (alpha-TIP) is a member of the major intrinsic protein (MIP) membrane channel family. We overexpressed this eukaryotic aquaporin in the methylotrophic yeast Pichia pastoris, and immunogold labeling of cellular cryosections showed that the protein accumulated in the plasma membrane, as well as vacuolar and other ... More
Spermidine but not spermine is essential for hypusine biosynthesis and growth in Saccharomyces cerevisiae: Spermine is converted to spermidine in vivo by the FMS1-amine oxidase.
Authors:Chattopadhyay MK, Tabor CW, Tabor H,
Journal:Proc Natl Acad Sci U S A
PubMed ID:14617780
In our earlier work we showed that either spermidine or spermine could support the growth of spe2Delta or spe3Delta polyamine-requiring mutants, but it was unclear whether the cells had a specific requirement for either of these amines. In the current work, we demonstrate that spermidine is specifically required for the ... More