Results 41 to 50 of about 6,092,811 (364)
Differential association of protein subunits with the human RNase MRP and RNase P complexes.
RNase MRP is a eukaryotic endoribonuclease involved in nucleolar and mitochondrial RNA processing events. RNase MRP is a ribonucleoprotein particle, which is structurally related to RNase P, an endoribonuclease involved in pre-tRNA processing.
T. Welting+3 more
semanticscholar +1 more source
ISOLATION OF A PROTEIN SUBUNIT FROM MICROTUBULES [PDF]
Sea-urchin sperm tails (Strongylocentrotus purpuratus) were obtained by amputation in synthetic sea water and were purified by differential centrifugation. Most of the arms of the outer nine doublets and soluble matrix proteins were removed by this treatment. The central pairs of microtubules were dissolved by dialysis against EDTA at pH 7.5.
Edwin W. Taylor, M. L. Shelanski
openaire +3 more sources
Protein Kinase A Regulatory Subunits in Colon Cancer
The protein kinase A (PKA) is classified as type I or II depending on the association of the catalytic subunit with either the RI or RII regulatory subunits.
Chris C. Carlson+4 more
doaj +1 more source
Model for Polymorphic Transitions in Bacterial Flagella [PDF]
Many bacteria use rotating helical flagellar filaments to swim. The filaments undergo polymorphic transformations in which the helical pitch and radius change abruptly. These transformations arise in response to mechanical loading, changes in solution temperature and ionic strength, and point substitutions in the amino acid sequence of the protein ...
arxiv +1 more source
The RNases P and MRP are involved in tRNA and rRNA processing, respectively. Both enzymes in eukaryotes are composed of an RNA molecule and 9–12 protein subunits. Most of the protein subunits are shared between RNases P and MRP.
M. A. Rosenblad+3 more
semanticscholar +1 more source
Somatic mutations in protein kinase A catalytic α subunit (PRKACA) were found to be causative for 30–40% of cortisol-producing adenomas (CPA) of the adrenal gland, rendering PKA signalling constitutively active.
Isabel Weigand+11 more
doaj +1 more source
Mechanisms of Size Control and Polymorphism in Viral Capsid Assembly [PDF]
We simulate the assembly dynamics of icosahedral capsids from subunits that interconvert between different conformations (or quasi-equivalent states). The simulations identify mechanisms by which subunits form empty capsids with only one morphology but adaptively assemble into different icosahedral morphologies around nanoparticle cargoes with varying ...
arxiv +1 more source
Archaeal RNase P has multiple protein subunits homologous to eukaryotic nuclear RNase P proteins.
Although archaeal RNase P RNAs are similar in both sequence and structure to those of Bacteria rather than eukaryotes, and heterologous reconstitution between the Bacillus subtilis RNase P protein and some archaeal RNase P RNAs has been demonstrated, no ...
T. Hall, James W. Brown
semanticscholar +1 more source
Accessory proteins for heterotrimeric G-proteins in the kidney
Heterotrimeric G-proteins play a fundamentally important role in regulating signal transduction pathways in the kidney. Accessory proteins are being identified as direct binding partners for heterotrimeric G-protein α or βγ subunits to promote more ...
Frank ePark
doaj +1 more source
Nucleocapsid Protein Subunits of Simian Virus 5, Newcastle Disease Virus, and Sendai Virus
Helical nucleocapsids of each of the paramyxoviruses simian virus 5 (SV5), Newcastle disease virus (NDV), and Sendai virus have been isolated in two different forms.
W. Mountcastle+3 more
semanticscholar +1 more source