Results 21 to 30 of about 49,990 (134)
Hot and crispy : CRISPR-Cas systems in the hyperthermophile Sulfolobus solfataricus [PDF]
The CRISPR (clustered regularly interspaced short palindromic repeats) and Cas (CRISPR-associated) genes are widely spread in bacteria and archaea, representing an intracellular defence system against invading viruses and plasmids.
White, Malcolm F., Zhang, Jing
core +2 more sources
Generalized-ensemble algorithm and diffusion theory have been combined in order to compute the dynamical properties monitored by nuclear magnetic resonance experiments from efficient and reliable evaluation of statistical averages. Replica-exchange Monte
Ayori Mitsutake+32 more
core +1 more source
Intrinsic Mean Square Displacements in Proteins
The thermal mean square displacement (MSD) of hydrogen in proteins and its associated hydration water is measured by neutron scattering experiments and used an indicator of protein function.
A. A. Maradudin+2 more
core +1 more source
Genomic function during the lampbrush chromosome stage of amphibian oogenesis [PDF]
Throughout its lengthy developmental history the disposition of the genetic material in the amphibian oocyte nucleus differs from that in other cell types.
Crippa, Marco+3 more
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Convergent Evolution of Ribonuclease H in LTR Retrotransposons and Retroviruses [PDF]
Ty3/Gypsy long terminals repeat (LTR) retrotransposons are structurally and phylogenetically close to retroviruses. Two notable structural differences between these groups of genetic elements are 1) the presence in retroviruses of an additional envelope gene, env, which mediates infection, and 2) a specific dual ribonuclease H (RNH) domain encoded by ...
Kirill Ustyantsev+3 more
openaire +3 more sources
Crystal structure of xenotropic murine leukaemia virus-related virus (XMRV) ribonuclease H [PDF]
RNase H (retroviral ribonuclease H) cleaves the phosphate backbone of the RNA template within an RNA/DNA hybrid to complete the synthesis of double-stranded viral DNA.
Chung, Bong Hyun+8 more
core +1 more source
A functional RNase P protein subunit of bacterial origin in some eukaryotes [PDF]
RNase P catalyzes 5′-maturation of tRNAs. While bacterial RNase P comprises an RNA catalyst and a protein cofactor, the eukaryotic (nuclear) variant contains an RNA and up to ten proteins, all unrelated to the bacterial protein.
Bernal Bayard, Pilar+5 more
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Inferring stabilizing mutations from protein phylogenies : application to influenza hemagglutinin [PDF]
One selection pressure shaping sequence evolution is the requirement that a protein fold with sufficient stability to perform its biological functions.
A Akasako+125 more
core +3 more sources
Ribonuclease H(70) is a component of the yeast nuclear scaffold [PDF]
ABSTRACT We have used monospecific antibodies against three ribonuclease H enzymes of Saecharomyces cerevisiae to investigate their intracellular localization. Fractionation experiments, as well as immunocytochemical staining, revealed a predominantly cytoplasmic localization of the RNase H proteins of 42 000 and 70 000, Mr, whereas that
Ulrike Wintersberger+4 more
openaire +3 more sources
Synthesis and evaluation of troponoids as a new class of antibiotics [PDF]
Novel antibiotics are urgently needed. The troponoids [tropones, tropolones, and α-hydroxytropolones (α-HT)] can have anti-bacterial activity. We synthesized or purchased 92 troponoids and evaluated their antibacterial activities against Staphylococcus ...
Adegboyega, Patrick+8 more
core +4 more sources