Results 81 to 90 of about 1,480,527 (305)

The effect of primer choice and short read sequences on the outcome of 16S rRNA gene based diversity studies [PDF]

open access: yes, 2013
Different regions of the bacterial 16S rRNA gene evolve at different evolutionary rates. The scientific outcome of short read sequencing studies therefore alters with the gene region sequenced.
De Vos, Paul   +4 more
core   +3 more sources

Primer initiation and extension by T7 DNA primase [PDF]

open access: yesThe EMBO Journal, 2006
T7 DNA primase is composed of a catalytic RNA polymerase domain (RPD) and a zinc-binding domain (ZBD) connected by an unstructured linker. The two domains are required to initiate the synthesis of the diribonucleotide pppAC and its extension into a functional primer pppACCC (de novo synthesis), as well as for the extension of exogenous AC ...
Udi, Qimron   +3 more
openaire   +2 more sources

Tau acetylation at K331 has limited impact on tau pathology in vivo

open access: yesFEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto   +3 more
wiley   +1 more source

Differentiation of two South African otter species (Aonyx capensis and Lutra maculicollis) from spraint based on partial CytB primer sets

open access: yesGlobal Ecology and Conservation, 2015
Accurate species identification based on visual cues can be challenging due to morphological similarities and the cryptic nature of certain species. Thus a more conclusive method of identification is required, namely DNA barcoding.
M. Thabang Madisha   +6 more
doaj   +1 more source

Effectiveness of annealing blocking primers versus restriction enzymes for characterization of generalist diets: unexpected prey revealed in the gut contents of two coral reef fish species. [PDF]

open access: yesPLoS ONE, 2013
Characterization of predator-prey interactions is challenging as researchers have to rely on indirect methods that can be costly, biased and too imprecise to elucidate the complexity of food webs.
Matthieu Leray   +3 more
doaj   +1 more source

cpDNA barcoding by combined End-Point and Real-Time PCR analyses to identify and quantify the main contaminants of oregano (Origanum vulgare L.) in commercial batches [PDF]

open access: yes, 1999
Oregano (Origanum vulgare L.) is a flowering plant that belongs to the mint family (Lamiaceae). It is used as a culinary herb and is often commercialized as a fine powder or a mixture of small fragments of dried leaves, which makes morphological ...
Vannozzi, Alessandro   +2 more
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Development of environmental DNA metabarcoding primers for marine mollusks and comparison with published primers

open access: yesBMC Ecology and Evolution
Monitoring mollusk biodiversity is a great challenge due to their large diversity and broad distribution. Environmental DNA (eDNA) technology is increasingly applied for biodiversity monitoring, but relevant studies on marine mollusks are still limited ...
Xiaojing Shi   +3 more
doaj   +1 more source

Pcr Primers for the Amplification of Mitochondrial Small Subunit Ribosomal DNA of Lichen-forming Ascomycetes [PDF]

open access: yes, 2017
Four primers for the amplification of mitochondrial DNA of lichenforming ascomycetes are presented. The primers match the conserved regions U2, U4, and U6, respectively, of mitochondrial small subunit (SSU) ribosomal DNA (rDNA). Polymerase chain reaction
Scheidegger, Christoph   +2 more
core  

An efficient one-step site-directed deletion, insertion, single and multiple-site plasmid mutagenesis protocol [PDF]

open access: yes, 2012
Background: Mutagenesis plays an essential role in molecular biology and biochemistry. It has also been used in enzymology and protein science to generate proteins which are more tractable for biophysical techniques.
Liu, Huanting, Naismith, James Henderson
core   +1 more source

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