Janelle N. Ruiz Assignment 2

Notes

Tasks

• Determine the differences in amino acid sequence between the proteins produced by

the alleles you found in Part I.

• Determine how the amino acid sequence of a pigment protein determines its color.
• Explain, in terms of the proteins present, the interactions between the alleles you found

in part I.

• Why is the color phenotype of some pigment proteins dominant while others are

recessive?

• How do the pigment proteins combine to produce the overall color of the plant?
• Construct a purple protein to demonstrate your understanding of this process.

Specific Tasks for this section

• Work as a class, using the data blog to:
• What are the differences in the amino acid sequences of the proteins produced by the

alleles you define in Part I? Hint: use the Compare menu to find the difference(s) between the amino acid sequences.

• What features of the amino acid sequence make a protein pigmented?
• What features of the amino acid sequence make a protein a particular color?
• How do the colors combine to produce an overall color? How does this explain the

genotype-phenotype rules you found in part (I)?

• Which proteins are found in each of the four starting organisms?
• Using this knowledge, construct a purple protein.

Notes

Allele Protein Structures

• Green:Met-Ser-Asn-Arg-His-Ile-Leu-Leu-Val-Tyr-Trp-Arg-Gln
• Blue:Met-Ser-Asn-Arg-His-Ile-Leu-Leu-Val-Tyr-Cys-Arg-Gln
• Yellow:Met-Ser-Asn-Arg-His-Ile-Leu-Leu-Val-Trp-Cys-Arg-Gln
• Red:Met-Ser-Asn-Arg-His-Ile-Leu-Leu-Val-Phe-Cys-Arg-Gln
• White:Met-Ser-Asn-Arg-His-Ile-Leu-Leu-Val-Val-Cys-Arg-Gln

Format

• allele
• color
• amino acid sequence (highlight differences)