[phenixbb] Extract coordinates from PDB file

Dear Phenix BB, I wish to extract xyz coordinates of Calpha atoms from the PDB file of my interest. Is there a program in Phenix or CCP4 for the same? Suggestions are highly appreciated. Thanks in advance Ashok Nayak Grad Student GN Ramachandran Structural Biology Lab., MSB Div CSIR-CDRI Lucknow India