Biochemistry
Does similarity in sequence between two proteins guarantee a similarity in function?
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Biochemistry Does similarity in sequence between two proteins guarantee a similarity in function?
Part A If you assume maximum sequence similarity between a-melanotropin and B-melanotropin, then what must the sequence of the latter be? (a -melanotropin: Ser - Tyr- Ser- Met - Glu- His - Phe- Arg- Trp- Gly- Lys- Pro- Val) Drag the appropriate labels to their respective targets so that the maximum sequence similarity to the order of c-melanotropin will be shown. Reset Help WGSPPK WOSPPK DSGPYK DSGPYK MEHFR MENFR Submit Request Answer Provide Feedback
A plasmid used as a cloning vector in E. coli must have… Does sequence similarity between genes play an important role in assigning gene function? Successful insertion of a DNA fragment into the multi-cloning region (restriction sites) of a recombinant plasmid is detected by what changes? Understand the concept of (restriction enzyme produced) DNA fragment separation by gel electrophoresis. In addition to restriction enzymes, which enzyme(s) are required to insert a fragment of DNA into a cloning vector? What is...
If two polypeptides share a great deal of amino acid sequence identity and similarity, what else is likely to be true?
how does gating affect the function of ion channels? Why do proteins couple certain reactions to the hydrolysis of ATP? What are two molecular differences between the extracellular and cytoplasmic sides of lipid and/or proteins in the plasma membrane?
The E-value is a measure of how significant the similarity is between two sequences. The lower the E value, the more significant the match (i.e., the more confident you should be that the sequence BLAST found is a biologically interesting match). (A reminder of the shorthand used in the BLAST results page: an E-value of 8e-21 is 8 times 10^-21 in scientific notation.) (a) According to the YouTube video, what is the maximum E value score that could still be...
Which sentence does describe definition of tertiary structure of proteins? A. Tertiary structure of proteins is defined as amino acid sequence of their polypeptide chain(s) B. Tertiary structure of proteins is defined as regular set up of their polypeptide chain(s) to form a-helix or b-sheets. C. Tertiary structure of proteins is defined as spatial set up of domains of proteins linked by peptide bounds. D. Tertiary structure of proteins is defined as spatial set up of subunits of...
Problem 2: Sequence similarity measure. Let 3 and y be two given DNA sequences, represented as strings with characters in the set {A, G, C,T}. The similarity measure of r and y is defined as the maximum score of any alignment of r and y, where the score for an alignment is computed by adding substitution score and deletion and insertion scores, as explained below. (Some operations have negative scores.) The score for changing a character T, into a...
Proteins vary dramatically in structure; DNA strands are very similar in structure. How does this observation about differences in structure relate to differences in function between the two classes of biological molecules? How does the rather simple structure of DNA contain the information for such a complex and varied collection of proteins?
Describe and explain one major structural similarity between the protistan molds and the zygomycota (bread molds) in terms of reproduction / dispersal. What similarities exist in the ecological function of these different organisms that may have resulted in this similarity? What evidence exists that allows us to view this similarity as a case convergent evolution?
Biochemistry amino acid question. Researchers discover a correlation between a disease and the substitution of an aspartic acid residue with a glycine residue in a certain protein that results in loss of function of this protein. What is the chemical structure change that results from this substitution? Suggest two possible explanations for loss of function in the Asp rightarrow Glee protein.