How to start GnuPG SSH Agent for gvfs?

I use Gnome 3.36.3 (Ubuntu 20.04.1) with GnuPG 2.2.19 as SSH agent. I tell OpenSSH where to find the GnuPG SSH agent socket in my

~/.profile

file: export SSH_AUTH_SOCK=$(gpgconf --list-dirs agent-ssh-socket) This works fine in terminal windows. Whenever I connect to a remote SSH server, I get prompted for my PIN. But when I try to connect to a remote SFTP server with Nautilus, I get errors, either an message like "not authorized!" or I am asked for username and password (which of course won't work as I use keys only). As a manual workaround I found out, that after a

gvfsd

and a complaining beep from Nautilus, SFTP connections will work as expected. So apparently **gvfs** is not aware of my GnuPG SSH agent after login. but will be later, when killed and restarted. What do I have to do, to make **gvfs** aware of my GnuPG SSH agent, wwithout killing manually first?