we list a few other sources, but I'm afraid we can not vouch for quality. Search for MT-ATP6 (and synonyms, e.g. ATP6 etc) here: http://www.linscottsdirectory.com/search/antibodies
Thanks, both of you! There are some antibodies available, but I hoped that someone has hands-on experience. All the antibodies are great if you ask from the producer :) The prices are quite expensive so I don't want to end up ordering many bad-quality products.