Here, you can download chaperonin sequences in FASTA format. You will be prompted to save the sequences as a text file.
If you are looking for taxonomy information to download, please visit the cpn60-Classifier. This repository contains training sets that can be used with the Ribosomal Database Project classifier or the QIIME2 q2-feature-classifier plugin to taxonomically assign chaperonin 60 (cpn60) sequences.