Use your knowledge of cell biology techniques to analyze the…

Written by Anonymous on April 4, 2026 in Uncategorized with no comments.

Questions

Use yоur knоwledge оf cell biology techniques to аnаlyze the dаta presented in this question and the one that follows. These data examine a protein called DAAM1 that researchers think may be involved in attaching cells to other neighboring cells. The researchers were interested in the relationship between DAAM1 and another protein, α-catenin, which is already known to be involved in these attachments between neighboring cells. Data adapted from Nishimura et al., J Cell Biol. 2016   Researchers used genetic techniques to make three different cell types, each with a different version of the DAAM1 protein present. One of the cell types had full-length DAAM1 protein present (labeled “Full” in the data figure), another cell type had a shortened version of the DAAM1 protein that included only the N-terminal half of the protein (labeled N in the data figure), the third cell type had a shortened version of the DAAM1 protein that only included the C-terminal half of the protein (labeled C in the data figure). The researchers performed an immunofluorescence experiment that labeled DAAM1 green (identifying whichever version was present in those cells). They compared with antibodies that labeled α-catenin in purple. When purple and green light are both present, together they appear white.   Examine each of the cell types shown for this experiment. 1. Answer the two questions below for the full-length DAAM protein. a) What do the data suggest about whether these versions of DAAM1 are likely to be involved in making attachments to neighboring cells? Explain your reasoning. b) What do these data suggest about whether these versions of DAAM1 are likely to work together with α-catenin? Explain your reasoning.    2. Answer the questions above for N-terminal half of the DAAM1 protein on its own. 3. Answer the questions above for C-terminal half of the DAAM1 protein on its own.

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