Does SOAP UIPro ver 4.5.2 has option for test automation?

Hi All,I'm new to SOAP UI tool.
I'm interested to learn SOAP UI tool for performing Function & Automation testing of web services, API testing.
Currently we are using SOAP UIPro 4.5.2 in our company.
Please guide and suggest me as which version of SOAP UI tool has these options and I can learn.


Currently list of available version in our company:
SOAP UI 3.6.1
SOAP UI 4.5.1
SOAP UIPro 4.5.2

Thanks & Regards,
Sai krishna.