Switch BFD download script to mirror.

README.md

@@ -310,6 +310,7 @@ and packages:
 
 We thank all their contributors and maintainers!
 
+
 ## License and Disclaimer
 
 This is not an officially supported Google product.
@@ -342,3 +343,9 @@ terms and conditions or license provisions. Your use of the third-party
 software, libraries or code is subject to any such terms and you should check
 that you can comply with any applicable restrictions or terms and conditions
 before use.
+
+### Mirrored Databases
+
+The following databases have been mirrored by DeepMind, and are available with reference to the following:
+
+*   [BFD](https://bfd.mmseqs.com/) (unmodified), by Steinegger M. and Söding J., available under a [Creative Commons Attribution-ShareAlike 4.0 International License](http://creativecommons.org/licenses/by-sa/4.0/).

scripts/download_bfd.sh

@@ -31,7 +31,7 @@ fi
 
 DOWNLOAD_DIR="$1"
 ROOT_DIR="${DOWNLOAD_DIR}/bfd"
-SOURCE_URL="https://bfd.mmseqs.com/bfd_metaclust_clu_complete_id30_c90_final_seq.sorted_opt.tar.gz"
+SOURCE_URL="https://storage.googleapis.com/alphafold-databases/casp14_versions/bfd_metaclust_clu_complete_id30_c90_final_seq.sorted_opt.tar.gz"
 BASENAME=$(basename "${SOURCE_URL}")
 
 mkdir --parents "${ROOT_DIR}"