In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

One protein that binds to this protein also binds to proline-rich sequences in the membrane proteins Vasp and Mena, and another is knocked out in the singed mutant. Phosphatidyl-inositol-4,5-bisphosphate regulates the binding of vinculin to both talin and this other protein, whose function is performed by nematode Major Sperm Protein in the only (*) eukaryotic cells known to lack one form of it. In addition to the aforementioned profilin and facsin, severin and gelsolin bind to this protein and sever it. Two toxins often used to study it are cytochalasins and phalloidin. Thymosin 4 sequesters this protein, which undergoes treadmilling because the critical concentration at its (+) and (-) ends is not the same. This protein consists of G monomers which polymerize into F filaments, which make up the microfilaments of the cytoskeleton. For 10 points, name this protein that forms cross-bridges with myosin in muscle cells.
Science

This man was the subject of a 1949 Henry Cowell opera designed as a satire against Dwight Eisenhower. He died in exile after a conservative coup led by his successor, Ramn Freire. When his father became viceroy of Peru, he was sent to London, where he met Francisco de Miranda and joined the independentist Lautaro Lodge. He began his public life as a deputy to the Cabildo from La Laja. His cavalry charge at the battle of Chacabuco allowed him to enter Santiago in triumph along with Jose de San Martin in March 1818. FTP, name this descendant of Irish officers in Spanish service, the first ruler of an independent Chile.
History

The title character thinks of Rose, his maid, who is presumably being raped by the groom in one story by this author, who also wrote an ape who trained at the title locale to become a human in another story. In addition to "A Country Doctor" and "A Report to An Academy," this author also wrote about the death of the title character in the Black Woods in another story, while this author also wrote about Karl Rossman's wanderings in the title country in another work. A novel about the land surveyor K. hoping to work at the title building was written by this author of "The Hunter Gracchus" and Amerika, and he also wrote about the mysterious arrest of the banker Josef K in another novel. FTP, name this Czech author of The Castle, The Trial, and a story about Gregor Samsa's transformation into a bug, "The Metamorphosis. "

Literature

