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The mass of huntingtin protein is dependent largely on the number of glutamine residues it has; the predicted mass is around 350 kDa. Normal huntingtin is generally accepted to be 3144 amino acids in size. The exact function of this protein is not known, but it plays an important role in nerve cells.
Several different interaction partners are involved in the N-terminal acetylation by NatA. Huntingtin interacting protein K (HYPK) interacts with hNatA on the ribosome to affect the N-terminal acetylation of a subset of NatA substrates. Subunits hNaa10 and hNaa15 will increase the tendency for aggregation of Huntingtin if HYPK is depleted.
N-terminal acetylation is the protein modification that occurs on the α-amino acid group at the N-termini of proteins. The backbone amino group on the first amino acid (α-amino group) on a protein N-terminus gets an acetyl group (-COCH 3) via acetyl-CoA, and this process is catalyzed by enzymes called N-terminal acetyltransferases (NATs). [1]
An analysis of that collected asteroid material, published Wednesday in the journal Nature, indicates that the samples included thousands of organic compounds and 14 of the 20 amino acids that ...
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The huntingtin gene provides the genetic information for huntingtin protein (Htt). [1] Expansion of CAG repeats of cytosine-adenine-guanine (known as a trinucleotide repeat expansion) in the gene coding for the huntingtin protein results in an abnormal mutant protein (mHtt), which gradually damages brain cells through a number of possible ...