The phrase "a certain dna sequence" is correct and usable in written English.
It can be used when referring to a specific but unspecified DNA sequence in a scientific or biological context.
Example: "Researchers are investigating a certain DNA sequence that may be linked to hereditary diseases."
Alternatives: "a specific DNA sequence" or "a particular DNA sequence".
The team members figured out how to add to yeast cells a certain DNA sequence that triggered a series of biochemical reactions that produced beta carotene, which the body turns into vitamin A. They presented that development at the iGEM regional contest and are continuing to work on yeast that also produces vitamin C, another crucial nutrient needed in impoverished areas.
At the research department, after a moment of depression, breeders are ready to try again: one group of developers thinks that a hybridization with an "heirloom" cultivar of pepper may be successful, adding better organoleptic qualities to high productivity; another group imagines that inserting into the pepper's genome a certain DNA sequence taken from an orchid could do the trick.
Quantitative proteomics allows the study of dynamic interactions of proteins or entire protein complexes with a certain DNA sequence (Fig. 2) (Ranish et al. 2003; Mittler et al. 2009).
Specifically, we noted that a certain DNA sequence designated H4.141 (5'-AGGCTGaAGTGCA-3') was > 100-fold overrepresented compared to other HNF4α binding sites in the human, but not the mouse, genome (see additional file 1: Figure S1).
When placed between an enhancer and promoter, certain DNA sequence elements inhibit enhancer-stimulated gene expression.
First, DNA or chromatin, or even certain DNA sequence elements or specifically modified chromatin, may increase the affinity of AIRE for DNA-PK.
Empirical and theoretical studies have both shown that there are certain DNA sequence patterns that are too rigid to form such loops [ 3].
We therefore integrated the nucleosome-DNA interaction model in our analysis, which is based on the principle that certain DNA sequences show a greater predisposition to wrap around the histone octamer and form nucleosomes [ 44].
The team members figured out how to add to yeast cells certain DNA sequences that triggered a series of biochemical reactions that produced beta carotene.
Professor Manolis Kellis and postdoctoral research fellow Alexander Stark report in the Jan . 1issue of the journal Genes & Development that in certain DNA sequences, both strands of a DNA segment can perform useful functions, each encoding a distinct molecule that helps control cell functions.
Certain DNA sequences are capable of strongly positioning a nucleosome in vitro, suggesting the possibility that favorable intrinsic signals might reproducibly structure chromatin segments.
