Is there a database of protein sequences/structure along with their melting temperature? Such databases have been constructed for example in here or here. But I can't find them anywhere online. Can someone point me to where I can find one available online?

Otherwise I'll have to write to these people and I don't know when/whether I'll get a reply.
ProTherm2 contains thermodynamic properties of proteins and mutants. https://www.iitm.ac.in/bioinfo/ProTherm2/ .
NAR Database issue advertises it as containing melting temperatures.
For the reference - found it with https://biokeanos.com/search?q=protein+%2Bmelting