What is the function of Spliceosomes?
Spliceosomes are multimegadalton RNA–protein complexes responsible for the faithful removal of noncoding segments (introns) from pre-messenger RNAs (pre-mRNAs), a process critical for the maturation of eukaryotic mRNAs for subsequent translation by the ribosome.
What are introns and exons?
Introns are noncoding sections of an RNA transcript, or the DNA encoding it, that are spliced out before the RNA molecule is translated into a protein. The sections of DNA (or RNA) that code for proteins are called exons.
How do small RNAs in the spliceosome initiate the splicing of the pre-mRNA?
The spliceosome is composed of particles made up of both RNA and protein. These particles are called small nuclear ribonucleoprotein or snRNPs (pronounced “snurps”) for short. The snRNPs recognize the conserved sequences within introns and quickly bind these sequences once the pre-mRNA is made and initiate splicing.
Which of the following events protect mRNA from degradation?
poly (A) tail
The poly (A) tail protects the mRNA from degradation, aids in the export of the mature mRNA to the cytoplasm, and is involved in binding proteins involved in initiating translation. Introns are removed from the pre-mRNA before the mRNA is exported to the cytoplasm.
What is the function of codons?
Codons provide the key that allows these two languages to be translated into each other. Each codon corresponds to a single amino acid (or stop signal), and the full set of codons is called the genetic code.
What are the two components of Spliceosomes?
Each spliceosome is composed of five small nuclear RNAs (snRNA) and a range of associated protein factors. When these small RNAs are combined with the protein factors, they make RNA-protein complexes called snRNPs (small nuclear ribonucleoproteins, pronounced “snurps”).
What is the main function of a promoter?
Promoter. A promoter is a sequence of DNA needed to turn a gene on or off. The process of transcription is initiated at the promoter. Usually found near the beginning of a gene, the promoter has a binding site for the enzyme used to make a messenger RNA (mRNA) molecule.
What are examples of codons?
Because a codon consists of three nucleotides, a codon would, then, have three bases. So a typical example of a genetic codon would be a triplet code, e.g., adenine-uracil-guanine (AUG), uracil-cytosine-cytosine (UCC), uracil-guanine-adenine (UGA), etc., that code for a specific amino acid.
What are three stop codons?
Called stop codons, the three sequences are UAG, UAA, and UGA.
How are functional resumes organized in a job description?
Typically, functional resumes are organized by categories based on your skills or qualifications. Look at the job description for cues about what to emphasize here. A functional resume does not emphasize your chronological work history. Instead, it highlights your skills and abilities:
Is the functional resume a blessing or a curse?
A functional resume: a blessing and a curse. A skills-based resume, as it’s often referred to, can do more damage than good unless you know exactly when to use it, and what for. Copied successfully Something went wrong, try again. It literally serves the recruiter your best skills on a silver platter.
Who is a good candidate for a functional resume?
Here are the most common types of candidates who benefit from a functional, skills-based resume: Creative types—your portfolio is what matters most and the functional resume gives you more creative space to showcase your talent in an application. Overqualified candidates—helps to show your skills and not your job experience.
Which is the best software to create a functional resume?
Collaborated with different creative teams to design and illustrate the publication of a series of comic books. Software: Photoshop (CS2), Illustrator, 3DS Max, Rhino 3D, Maya, Adobe, Flash, After Effects, Dream weaver, Microsoft Word, Excel, Adobe, PageMaker, PowerPoint