Hairpin

... down and annealing they bond with neighboring RNA sequences instead of the sequence from their own chain, preventing the presentation of the hairpin in any crystals that form. Am I overlooking anything from the crystallization process of RNA, or does anyone else have any ideas? ex. of GUAA ...

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... the vial RNA-directed RNA polymerases. However, when RNAi is produced from animal genomes, the double-stranded RNA is manufactured by cleaving a hairpin twice. In animals, the RNA is transcribed as a single strand of RNA which contains a self-complementary region, and after the self-complementary ...

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Hairpin loop structure are quite common. In fact tRNA are quite interesting in this respect. As for what meakes this possible, I would say Watson-Crick pairs. RNA is just like DNA in this respect.

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... ends prepared by T4 DNA polymerase's error-correcting activity. I suspect the problem with using long stretches of ssDNA is the potential for hairpin formation, especially near the ends, that might interfere with hybridization. I would use sites with as long an overhang as I can get and then ...

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... double-stranded, whereas miRNAs are single-stranded. Although initially single stranded there are regions of intra-molecular association causing hairpin structures in pre-miRNAs; immature miRNAs. Very recently, dsRNA has been found to induce gene expression at transcriptional level, a phenomenon ...

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