I have the following example string: 
   ACGTTGGCTATTGGGCCCGCT

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I am searching for the pattern 'GTT' in the above string. As you will notice, pattern 'GTT' occurs in the start of the string. Once the pattern is matched, I need to remove any number of characters before (here, AC) and 3 characters (GGC) after the pattern ('GTT').

so the output will look something like this:

   TATTGGGCCCGCT

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Any pointers how I can do this? Thanks!

In reply to how to remove characters before and after a search pattern in a string? by BhariD

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