[gmx-users] pull direction

[Weihua Li]

 Dear gmx-users，
	  I am intended to pull a ligand out of a active site along z-axes.But how to guarantee the pull direction to be the z-axes?

　　　　　　　　
 				
Best regards                 
Weihua Li
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 Center for Drug Discovery & Design     
 State Key Laboratory of Drug Research
 Shanghai Institute of Materia Medica
 Chinese Academy of Sciences
 294 Taiyuan Road
 Shanghai 200031
 People's Republic of China
 E-mail: whli at mail.shcnc.ac.cn 
 Phone: 86-21-64311833-615/222(Lab)
 Fax: 86-21-64318401
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