Can we use Interpolation Braces for calling functions in angular?

This is regarding angular 6.
I’m calling functions with angular braces like this.

          <div *ngIf="line1.valid && (line1.dirty || line1.touched)">

I was wondering if that’s a correct standard for calling functions or not.
Do we have any drawbacks with it?
Can anyone help me with it?
Thanks in advance