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--minimize argument

2020-09-27
2020-09-28
  • Yuning Shen

    Yuning Shen - 2020-09-27

    Hi David,

    Thanks again for providing Smina! I just started learning docking and I am not very clear about the default procedure without --minimize argument. Learned from orgininal AutoDock Vina, docking consists of several independent runs and each contains steps performing pose perturbation, local minimization and decision on accepting/rejecting the new pose. Do the program only samples and scores poses by default (without --minimize)?

    Thanks in advance!


    Add on:

    I seems to be a misunderstanding from my part. I tested with --minimize and it only performed local minimization (much faster than actual docking). Now I consider it is an alias for --local_only (https://sourceforge.net/p/smina/discussion/help/thread/27839abf/#3399).

    Based on this, I am assuming the default steps for docking (including local minimization) is performed without --minimize?

     

    Last edit: Yuning Shen 2020-09-27
    • David Koes

      David Koes - 2020-09-28

      Correct. --minimize isn't quite the same as --local_only with vina as, unlike local_only, it actually will go to convergence.

       
      • Yuning Shen

        Yuning Shen - 2020-09-28

        Thanks for clarifiation - I did see slight difference in results between using --minimize and using --local_only for conformation optimization.

        As convergence is one of the improvement of Smina over AutoDock Vina, does the default docking configuration (without --minimize or --local_only) also perform each local optimization to convergence?

         
        • David Koes

          David Koes - 2020-09-28

          No, it keeps the quick local optimization of Vina when docking to keep things fast.

           

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