Help with regular expressions

Hi all,

I’m working on a GenBank parser and I need some help with regular expressions. I’m using this one:
private static final Pattern patFeatureKey = Pattern.compile("^\s{5}([A-Za-z\_]+)\s+");

but it doesn’t work when parsing a line like the following:

5’UTR 1…3000

3’UTR 3…450

How should I modify the pattern to include '?

Thanks so much in advance!!!