Write an acceptable protein sequence from the following Pros

Write an acceptable protein sequence from the following Prosite pattern:

[IL]-X-C-X(2)-{IL}

Solution

The Prosite patternn syntax is as follows:

[IL]: \"square brakets\" are given when there is ambiquity for the acceptable protein at the given position. In this case, at this position the amino acid can be either Isoleucine or leucine.

X and X(2): \"x\" symbol is used for the positions where any animo acid is acceptable and the number given the following paranthesis indicates the number of repetitions.

C: \'\'C\" symbol stands for amino acid cysteine

{IL}: \"curly brakets\" are given when there is ambiquity for the non-acceptance of protein at the given position. In this case, it is any amino acid except for Isoleucine and leucine at the given position.

Thus the acceptable protein sequence from the given Prosite pattern is:

[Isoleucine or Leucine] - X - Cysteine - X - X - {any amino acid except Isoleucine and Leucine}