* Authors*
Victor Fernandez Rodriguez.
 INB Hub. Life Sciences Department.
 Barcelona Supercomputing Center (BSC). Barcelona, Spain.
 e-mail: victor.fernandez _at_ bsc.es

Salvador Capella-Gutierrez.
 INB Hub. Life Sciences Department.
 Barcelona Supercomputing Center (BSC). Barcelona, Spain.
 e-mail: salvador.capella _at_ bsc.es

Toni Gabaldón.
 Comparative Genomics Group. Life Sciences Department.
 Barcelona Supercomputing Center (BSC). Barcelona, Spain.
 e-mail: toni.gabaldon _at_ bsc.es

** Up to trimAl v1.4 **
Salvador Capella-Gutierrez.
 Comparative Genomics Group. Bioinformatics and Genomics Department.
 Centre for Genomic Regulation. Barcelona, Spain.
 e-mail: scapella _at_ crg.es

Toni Gabaldón.
 Comparative Genomics Group. Bioinformatics and Genomics Department.
 Centre for Genomic Regulation. Barcelona, Spain.
 e-mail: tgabaldon _at_ crg.es

** Up to trimAl v1.1 **
Jose Ma. Silla-Martínez.
 e-mail: josilma1 _at_ gmail.com