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No. I don’t think anybody would call the sigma factor of bacterial RNA polymerase — or indeed any other protein — a cofactor or a coenzyme, the subset of cofactors that are organic (the original poster is wrong in his declaration about cofactors, or at least one reputable text book disagrees with him). I could justify this statement by quoting a definition ...


5

I don't think definite answers exist but I can think of theoretical reasons: First, Poly A tail can efficiently be synthesized because ATP is the most readily available nTP, being the main energy source. More to the mechanism, but this is no explanation to the evolution: The termination sequence 'TTTATT' on the DNA template and 'AAUAAA'on the RNA is the ...


1

Hello and welcome Nandini Yadav, It is worth mentioning DNA is an acid (Deoxyribonucleic acid) and intracellular pH is most commonly between 7.0 and 7.4. Alkaline reagent Example "The sodium hydroxide (NaOH) is a commonly used reagent to denature the DNA by increasing the pH. At an alkaline pH, OH- groups are predominant. They remove the hydrogen- ...


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Your question couldn't be answered using just suggestions: we need proofs. In this study (from which I've quoted the sentence below) authors suggest an implication for inflammation response in patient. Among the mutations, the ORF3a-Type-3 and ORF3a-Type-4 mutations are restricted to only the Indian patients based in Ahmedabad so far it is identified. These ...


1

A subgenomic promoter is a promoter added to a virus for a specific heterologous gene, resulting in the formation of mRNA for that gene alone. Many positive-sense RNA viruses produce these subgenomic mRNAs (sgRNA) as one of the common infection techniques used by these viruses and generally transcribe late viral genes. From doi:10.1128/jvi.74.13.5988-5996....


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You are looking at high school biology books. if that. I'd be shocked if a high school text didn't mention blood group genes, for instance. The simple genetics that Mendel elucidated only applies to a very small number of situations. In real life, very few situations are explained by the interactions of only two different alleles, one of which is ...


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It is stated that out of all eumetazoans in Kingdom Animalia, only arthropods do not contain such structures. I found this paper(1), eliciting an exception (within an exception)- Isotomurus maculatus: Here, we report the first evidence for the expression of a cytoplasmic IF protein in an arthropod - the basal hexapod Isotomurus maculatus. This new protein, ...


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