A CAAT–Box Binding Factor Gene That Regulates Seed Development
... •Transcription is initiated at regions of DNA called promoters. Specific sequences of nucleotide bases at a promoter are recognized by both transcription factors and RNA polymerase, the enzyme that synthesizes RNA. The mRNA strand produced is complementary to the transcribed strand (the antisense st ...
... •Transcription is initiated at regions of DNA called promoters. Specific sequences of nucleotide bases at a promoter are recognized by both transcription factors and RNA polymerase, the enzyme that synthesizes RNA. The mRNA strand produced is complementary to the transcribed strand (the antisense st ...
Judgement Statement – 2012
... causes it to move off the operator site. The operator region is open, RNA polymerase can now bind to the promotor and transcription happens. Lactose digesting enzymes can be made. As the lactose is removed / broken down the inducer disappears and the repressor is again activated, so it binds again t ...
... causes it to move off the operator site. The operator region is open, RNA polymerase can now bind to the promotor and transcription happens. Lactose digesting enzymes can be made. As the lactose is removed / broken down the inducer disappears and the repressor is again activated, so it binds again t ...
Chapter 15 - Translation of mRNA
... a. The function of a tRNA depends on the specificity between the amino acid it carries and its anticodon b. Common structural features are shared by all tRNAs c. Aminoacyl-tRNA synthetases charge tRNAs by attaching the appropriate amino acid d. Mismatches that follow the wobble rule can occur at the ...
... a. The function of a tRNA depends on the specificity between the amino acid it carries and its anticodon b. Common structural features are shared by all tRNAs c. Aminoacyl-tRNA synthetases charge tRNAs by attaching the appropriate amino acid d. Mismatches that follow the wobble rule can occur at the ...
posted
... 3‘-end is the amino-acid attachment site—binds covalently. At the other end (middle of the tRNA sequence) is the Anticodon—site of base pairing with mRNA. Unique for each species of tRNA. ...
... 3‘-end is the amino-acid attachment site—binds covalently. At the other end (middle of the tRNA sequence) is the Anticodon—site of base pairing with mRNA. Unique for each species of tRNA. ...
Gene expression (central dogma)
... steps in order to become a mature mRNA. During processing, caps are added to the ends of the RNA, and some pieces of it may be carefully removed in a process called splicing. These steps do not happen in bacteria. ...
... steps in order to become a mature mRNA. During processing, caps are added to the ends of the RNA, and some pieces of it may be carefully removed in a process called splicing. These steps do not happen in bacteria. ...
An Overview of Protein Synthesis
... Types of RNA: 1) mRNA = messenger RNA – carries the code for the protein to the ribosome. Made from the DNA template. 2) tRNA = transfer RNA – transfers amino acids from the cytoplasm to the ribosome for polypeptide synthesis. 3) rRNA = ribosomal RNA – structural component of ribosomes. Provides the ...
... Types of RNA: 1) mRNA = messenger RNA – carries the code for the protein to the ribosome. Made from the DNA template. 2) tRNA = transfer RNA – transfers amino acids from the cytoplasm to the ribosome for polypeptide synthesis. 3) rRNA = ribosomal RNA – structural component of ribosomes. Provides the ...
Slide 1
... Lac repressor is a tetrameric complex that in the absence of lactose binds tightly to the operator region covering the transcription initiation site. In the presence of lactose or lactose mimicking substances (IPTG) it falls off. ...
... Lac repressor is a tetrameric complex that in the absence of lactose binds tightly to the operator region covering the transcription initiation site. In the presence of lactose or lactose mimicking substances (IPTG) it falls off. ...
2.Molecular basis of heredity. Realization of hereditary information
... several fragments, called Okazaki Fragments, that are bound together by DNA ligase. ...
... several fragments, called Okazaki Fragments, that are bound together by DNA ligase. ...
Structure,Function of RNA
... 3. Nitrogenous base hold together by covalent bonds 4. RNA molecule have two purine base (adenine, guanine) and two pyrimidine base (uracil, cytocine) 5. Ribose sugar bonded with one nitrogen base form Ribonucleoside, ...
... 3. Nitrogenous base hold together by covalent bonds 4. RNA molecule have two purine base (adenine, guanine) and two pyrimidine base (uracil, cytocine) 5. Ribose sugar bonded with one nitrogen base form Ribonucleoside, ...
Transcription
... THE chicken or the egg? The biological silences have a variation: which came first, DNA or protein? You see, among the many tasks performed by proteins is assembling DNA molecules. But DNA contains the in formation needed to make proteins. So which came first? ...
... THE chicken or the egg? The biological silences have a variation: which came first, DNA or protein? You see, among the many tasks performed by proteins is assembling DNA molecules. But DNA contains the in formation needed to make proteins. So which came first? ...
Biochemistry
... their physical traits and genes (Semester 1). To understand the process of protein synthesis and how proteins affect the physical traits of an organism. To understand how biotechnology can be used to further our understanding of vertebrate evolution. ...
... their physical traits and genes (Semester 1). To understand the process of protein synthesis and how proteins affect the physical traits of an organism. To understand how biotechnology can be used to further our understanding of vertebrate evolution. ...
Protein Synthesis Test Review
... Directions: Use your notes and examples to complete the review. Study until you are sure you’ll make an A, and then continue to study for another 20 minutes after that time (studying does NOT consist of staring at the review and/or putting your head down on the review….we have covered osmosis…it onl ...
... Directions: Use your notes and examples to complete the review. Study until you are sure you’ll make an A, and then continue to study for another 20 minutes after that time (studying does NOT consist of staring at the review and/or putting your head down on the review….we have covered osmosis…it onl ...
Eukaryotic RNA Polymerases and their Promoters
... – Spacing between these elements is important ...
... – Spacing between these elements is important ...
Document
... 5) cDNA is made from mRNA by the enzyme______________________ 6a) Double stranded cDNA for a protein coding gene usually has what three identifiable regions: ___________ ___________ _____________ 6b) Must these three regions equate to three exons? (yes, no –circle one) 7) The triplet code for transl ...
... 5) cDNA is made from mRNA by the enzyme______________________ 6a) Double stranded cDNA for a protein coding gene usually has what three identifiable regions: ___________ ___________ _____________ 6b) Must these three regions equate to three exons? (yes, no –circle one) 7) The triplet code for transl ...
Powerpoint Presentation: Gene Expression
... Soluble At least 61 different forms each has a specific anticodon as part of its structure. tRNA “translates” the message on the mRNA into a polypeptide chain ...
... Soluble At least 61 different forms each has a specific anticodon as part of its structure. tRNA “translates” the message on the mRNA into a polypeptide chain ...
Recombinant human RNA polymerase II CTD repeat
... ribonucleoside triphosphates as substrates. Largest and catalytic component of RNA polymerase II which synthesizes mRNA precursors and many functional non-coding RNAs. Forms the polymerase active center together with the second largest subunit. Pol II is the central component of the basal RNA polyme ...
... ribonucleoside triphosphates as substrates. Largest and catalytic component of RNA polymerase II which synthesizes mRNA precursors and many functional non-coding RNAs. Forms the polymerase active center together with the second largest subunit. Pol II is the central component of the basal RNA polyme ...
Chapter 3, Section 4 The DNA Connection
... • The order of the nitrogen bases along a gene forms a genetic code that specifies what type of protein will be produced. • In the genetic code, a group of 3 bases code for the attachment of a specific amino acid. • The order of these bases determine the type of protein. ...
... • The order of the nitrogen bases along a gene forms a genetic code that specifies what type of protein will be produced. • In the genetic code, a group of 3 bases code for the attachment of a specific amino acid. • The order of these bases determine the type of protein. ...
From Gene to Protein
... (a) Two-dimensional structure. The four base-paired regions and three G C U A loops are characteristic of all tRNAs, as is the base sequence of the * G amino acid attachment site at the 3 end. The anticodon triplet is A A* unique to each tRNA type. (The asterisks mark bases that have been C U ...
... (a) Two-dimensional structure. The four base-paired regions and three G C U A loops are characteristic of all tRNAs, as is the base sequence of the * G amino acid attachment site at the 3 end. The anticodon triplet is A A* unique to each tRNA type. (The asterisks mark bases that have been C U ...
Polyadenylation
Polyadenylation is the addition of a poly(A) tail to a messenger RNA The poly(A) tail consists of multiple adenosine monophosphates; in other words, it is a stretch of RNA that has only adenine bases. In eukaryotes, polyadenylation is part of the process that produces mature messenger RNA (mRNA) for translation. It, therefore, forms part of the larger process of gene expression.The process of polyadenylation begins as the transcription of a gene finishes, or terminates. The 3'-most segment of the newly made pre-mRNA is first cleaved off by a set of proteins; these proteins then synthesize the poly(A) tail at the RNA's 3' end. In some genes, these proteins may add a poly(A) tail at any one of several possible sites. Therefore, polyadenylation can produce more than one transcript from a single gene (alternative polyadenylation), similar to alternative splicing.The poly(A) tail is important for the nuclear export, translation, and stability of mRNA. The tail is shortened over time, and, when it is short enough, the mRNA is enzymatically degraded. However, in a few cell types, mRNAs with short poly(A) tails are stored for later activation by re-polyadenylation in the cytosol. In contrast, when polyadenylation occurs in bacteria, it promotes RNA degradation. This is also sometimes the case for eukaryotic non-coding RNAs.mRNA molecules in both prokaryotes and eukaryotes have polyadenylated 3'-ends, with the prokaryotic poly(A) tails generally shorter and less mRNA molecules polyadenylated.