How to convert affymetrix HG-U133_Plus_2 to gene symbol?

Question

[acco.per.registrazioni]

Hi everyone, I have a transcription dateset in the format HG-U133_Plus_2 affymatrix and I want to convert it into official gene symbols. I have tried bioconductor "hgu133a.db" library but it doesn't work. Can somebody help me out understanding how to do it? I put here some of the probes I'm unable to convert. Thanks in advance!

1552256_a_at
1552257_a_at
1552258_at
1552261_at
1552263_at
1552264_a_at
1552266_at
21552269_at
1552271_at
1552272_a_at
1552274_at
1552275_s_at
1552276_a_at
1552277_a_at
1552278_a_at
1552279_a_at
1552280_at
1552281_at
1552283_s_at
1552286_at
1552287_s_at
1552288_at

Answer 1

[JC]

You can get the annotation from affymetrix http://www.affymetrix.com/support/technical/byproduct.affx?product=hg-u133-plus