8. Match the following: Set B: A. retrieve amino acid sequences of the 3 amylase

Question

8. Match the following: Set B: A. retrieve amino acid sequences of the 3 amylases used in the lab B. view proteins 3D structure on computer C. aspartate (D182)/glutamate (E248)/aspartate (D312) D. secondary structures that are stabilized by hydrogen bonds E. tertiary structure F. primary structure G. conserved amino acids H. can be determined by multiple sequence alignment using Clustal Omega Set A: 1. NCBI accession number 2. PDB IID 3. amino acids in the active site of human salivary amylase, 4. alpha helices and beta pleated sheets are examples of 5. total 3D conformation(shape) of an entire polypeptide chain including alpha helices beta sheets and other loops, turns and bends 6. the sequence of amino acids in a polypeptide chain determines the way a protein folds into a unique3D shape (native conformation) 7.96 identity 8. % homology

Explanation / Answer

Ans.

1 - A (NCBI accession no. can be used to retrieve amino acid sequences)

2- B (PDB id can be used for viewing protein 3D structure in protein data bank)

3- C (D182 E248 AND D312 are present in the active site of human salivary amylase)

4- D (alpha helices and beta pleated sheets are hydrogen bond stabilized secondary structure)

5- E (total 3D confirmation of a plolypeptide sequence is its tertiary structure)

6- F (sequence of amino acids is the primary structure)

7- H (% identity can be determined by the multiple sequence alighnment which matches the amino acids in two sequences)

8- G (% homology represents conserved amino acids i.e.,higher the % homology higher the percentage of conserved amino acids and vice- versa. )

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