Rearrangement of the 16S Precursor Subunits Is Essential for the Formation...

Biophysical Journal;  December 1, 2004 ;     700+ words ......20S proteasome. The individual β-subunits in the 16S precursor complex rotate with...comprises four staggered rings each of seven subunits (α or β) that form a barrel-shaped structure. The α- and β-subunits reside in the two outer and inner rings...

Disparate Roles for the Regulatory A Subunit Isoforms in Arabidopsis...

Plant Cell;  March 1, 2004 ;     700+ words ......catalytic subunit and regulatory A and B subunits that modulate enzyme activity and mediate...C) subunit with regulatory (A and B) subunits produces several species of holoenzymes...catalytic subunit, even in the absence of B subunits (Kamibayashi et al., 1992; Turowski et...

G Protein [gamma] Subunits Provide Functional Selectivity

Plant Cell;  April 1, 2007 ;     256 words ......heterotrimer consists of α, β, and γ subunits bound to specific GPCRs. Ligand binding to...of gene families for each of the G protein subunits. Humans contain at least 23 Gα subunits, 6 Gβ subunits, and 12 Gγ subunits...

Structure of the Cytosolic Part of the Subunit b-Dimer of Escherichia coli...

Biophysical Journal;  June 15, 2008 ;     700+ words ......energy from the small rotational steps of subunits c to the F^sub 1^ sector during catalysis...bacterial, cyanobacterial, and plant b-subunits demonstrated little sequence similarity...this synthase consists of three types of subunits, subunit-, -b, and -c, with a stoichiometry...

Determination of the Activation Volume of PLC[beta] by...

Biophysical Journal;  April 1, 2005 ;     700+ words ......be rapidly deactivated by Gα(GDP) subunits without dissociation, which led to the...interaction. Since PLCβ and G-protein subunits associate on membrane surfaces, we worked...GDP) is strongly bound to Gβγ-subunits, but GTP-bound Gα has a much weaker...

Single and double knockouts of the genes for photosystem I subunits G,K,...

Plant Physiology;  June 1, 2002 ;     700+ words ......Knockouts of the Genes for Photosystem I Subunits G, K, and H of Arabidopsis. Effects on...I (PSI) of higher plants contains 18 subunits. Using Arabidopsis En insertion lines...simultaneously PSI-G and -K, indicate that PSI subunits other than G and K can also bind Lhca2...

The Stoichiometry of P2X^sub 2/6^ Receptor Heteromers Depends on Relative...

Biophysical Journal;  July 15, 2007 ;     700+ words ......containing both P2X^sub 2^ and P2X^sub 6^ subunits. We transfected tsA 201 cells with both P2X^sub 2^ and P2X^sub 6^ subunits, bearing different epitope tags. We...receptors contain primarily 2 P2X^sub 2^ subunits and 1 P2X^sub 6^ subunit. In contrast...

Subunit-Specific Effect of the Voltage Sensor Domain on Ca^sup 2+^...

Biophysical Journal;  June 15, 2008 ;     700+ words ......BK) channels, composed of pore-forming α-subunits and auxiliary β-subunits, play important roles in diverse physiological...due to the tissue-specific expression of β-subunits (β1-β4) that modulate channel function...

Endogenous KCNE Subunits Govern Kv2.1 K+ Channel Activation Kinetics in...

Biophysical Journal;  February 15, 2006 ;     700+ words ......oocyte potassium channel KCNE ancillary subunits xMinK and xMiRP2 slow the activation...highly-selective pore (2,3). Kv-channel α-subunits each possess six transmembrane domains...one of which is coassembly of α-subunits with a variety of different ancillary...

Rapid Identification of HMW Glutenin Subunits from Different Hexaploid...

Cereal Chemistry;  September 1, 2004 ;     700+ words ...ABSTRACT High molecular weight glutenin subunits (HMW-GS) from three hexaploid wheat species...allelic pairs of 13+16, 17+18, and 7+8 subunits that were considered to have positive...properties, as well as three pairs of novel subunits 13+22*, 13*+19*, and 6.1+22.1 detected...

Voltage-Gated Rearrangements Associated with Differential [beta]-Subunit...

Biophysical Journal;  August 1, 2004 ;     700+ words ...ABSTRACT Auxiliary [beta]-subunits bound to the cytoplasmic [alpha...beta]^sub 1a^- and [beta]^sub 2^- subunits and structural responses of the channel...of the [alpha]^sub 1C^- and [beta]-subunits were fused with cyan or yellow fluorescent...

Both Subunits of ADP-Glucose Pyrophosphorylase Are Regulatory1

Plant Physiology;  May 1, 2004 ;     700+ words ......hypothesis concerning the relative roles of the two subunits and to identify regions in the subunits important in allosteric regulation. We exploited...pursue this objective. Whereas potato and maize subunits have long been separated by speciation and...

Three [alpha]-Subunits of Heterotrimeric G Proteins and an Adenylyl...

Genetics;  September 1, 2008 ;     700+ words ......genes encoding three different α-subunits of heterotrimeric G proteins (gsa, G...mutants showed that the genes for Gα-subunits have distinct roles in the sexual life...mediate signaling via distinct Gα-subunits, two recently generated Δpre strains...

The Two AGPase Subunits Evolve at Different Rates in Angiosperms, yet They...

Plant Cell;  May 1, 2007 ;     700+ words ......in bacteria show that the two AGPase subunits are equally predisposed to enzyme activity-alteri...enzyme complexes with different large subunits. Independent approaches provide data...identical small and two identical large subunits but the small subunit exhibits strikingly...

Dual Lipid Modification of Arabidopsis G[gamma]-Subunits Is Required for...

Plant Physiology;  March 1, 2007 ;     700+ words ......the two heterotrimeric G-protein γ-subunits from Arabidopsis (Arabidopsis thaliana...G proteins consist of three different subunits, Gα, Gβ, and Gγ. Gβ...of 17 Ga genes that encode 23 Gα-subunits, five Gβ genes, and at least 12...