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WVSOM
Protein Translation
Question | Answer |
---|---|
When multiple transcripts of rRNA simultaneously produced from each gene | Oscar Miller Feathers |
The region of a nucleus where ribosomes are produced | Nucleolus |
What three rRNAs are transcribed by Pol I as one large RNA molecule known as Pre-RNA and then cleaved to three seperate rRNAs | 28S, 18S, 5.8S |
What rRNA is transcribed from 5S rRNA gens by Pol II | 5S |
The proteins that assemble around the rRNA to form the large and small subuints of ribosomes | Ribonucleoproteins |
Ribosomes are compoased of | RNA and Protein |
Internal annealing folds of tRNA into clover leaves. The D and TψCG loops also fold back on each other to generate L shaped structures | Folding |
A nucleotide triplet at the apex of the tRNA which is complimentary to a specific codon of mRNA. In the ribosome, it binds a codon. | Anticodon |
Promoters for rRNA and tRNA lack... but TBP is still a component of their initiation complexes | TATA boxes |
The promoters for Pol III are within their | Genes |
Translation occurs in the | Cytoplasm |
The channels embedded in the nuclear envelope that allow the passage of mRNA, tRNA ribosomes, DNA transcription factors, and RNA polymerase | Nuclear Pore Complexes |
The final step before tRNAs can be used for translation that involves binding them with their specfic amino acids | tRNA charging |
the enzyme responsible for tRNA charging the binds the 3' OH of the tRNA with he carboxyl group of its amino acid | Aminoacyl-tRNA synthetase |
A nucleotide triplet that specifies a particular amino acid | Codon |
Every three bases of the mRNA sequence, read 5' to 3' | Triplet |
Codons only specify one amino acid | Unambiguous |
Most amino acids are specified by several different codons | Degenerate |
How many amino acids are there | 20 |
The third base of codons that specify the same amino acid varies. The first two bases are usually identical | Wobble |
Codon sequence is parallel to the amino acid sequence | Colinear |
The next codon begins where the last one ends | Non-overlapping |
All living organisms on earht use the same code | Universal |
The start codon is ... which codes for the amino acid ... | AUG, Methionine (Met) |
The ribosome reads the mRNA in the .... direction | 5' to 3' |
What are the three stop codons | UAA, UAG, UGA |
A polymer (chain) of amino acids. Proteins | Polypeptide |
The carboxyl moiety of one amino acid is bound to the amino moiety of the next | Peptide bond |
An amino acid in the sequence of a polypeptide | Residue |
The polypeptide is synthezided from the ... ends | Amino to Carboxyl |
What are the three stages of translation | Initiation, Elongation, Release |
The stage in which ribosomes are assembled with an mRNA between the large and small subunits, along with the first aminoacyle tRNA, Met. This tRNA is bound to the P site of the rbosome | Initiation Stage |
The stage in which addition of amino acids to the growing polypeptide chain occurs | Elongation Stage |
A region of the ribosome that binds the tRNA that is attached to the growing polypeptide chain | Peptidyl site (P site) |
A region of the ribosome that binds the aminoacyl tRNA for the next amino acid to be bound to the growing polypeptide | Aminoacyl site (A site) |
The stage in which the completed polypeptide, mRNA and both ribosomal subunits come apart | Release Stage |
During the elongation stage the amino acid is ... to the polypeptide, the polypeptide ... is to the amino acid | Not added, Transferred |
When proteins are targeted to specific cellular compartments | Protein sorting |
A signal sequence of the newly translated protien is bound by a | Docking Protein |
The transmembrane receptor the a docking prtien binds to anchor the ribosome to the rough ER | Translocon |
Transportation of a protein to its final destination | Intracellular membrane trafficking |
The luminal side of the ER, Golgi, Vesicles, and exoplasmic side of the plasma membrane | E Face |
the cytoplasmic side of the ER, Golig, Visciles, and cytoplasmic side of the plasma membrane | P face |
Five principle types of post translational modification | Disulfide bond formation, Glycosylatioin, Cleavage, Polypeptide folidng, Multisubunit assembly |