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protein synthesis
protein synthesis

... The steps in this part of the process are: 1. RNA polymerase binds to DNA strand and unwinds a short section (about 12 base pairs long) 2. This then travels along the DNA strand building an RNA molecule from the TEMPLATE STRAND ...
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DNA Structure and Replication
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No Slide Title

... Transfer RNA (tRNA) leaves the nucleus, binds to the amino acid specified by it’s anticodon and transfers it to the ribisome where it meets up with mRNA to assemble a protein. ...
11.2 Reading Guide - Lewis Center for Educational Research
11.2 Reading Guide - Lewis Center for Educational Research

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Abstract-Template-2016
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Holliday junction



A Holliday junction is a branched nucleic acid structure that contains four double-stranded arms joined together. These arms may adopt one of several conformations depending on buffer salt concentrations and the sequence of nucleobases closest to the junction. The structure is named after the molecular biologist Robin Holliday, who proposed its existence in 1964.In biology, Holliday junctions are a key intermediate in many types of genetic recombination, as well as in double-strand break repair. These junctions usually have a symmetrical sequence and are thus mobile, meaning that the four individual arms may slide though the junction in a specific pattern that largely preserves base pairing. Additionally, four-arm junctions similar to Holliday junctions appear in some functional RNA molecules.Immobile Holliday junctions, with asymmetrical sequences that lock the strands in a specific position, were artificially created by scientists to study their structure as a model for natural Holliday junctions. These junctions also later found use as basic structural building blocks in DNA nanotechnology, where multiple Holliday junctions can be combined into specific designed geometries that provide molecules with a high degree of structural rigidity.
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