A pipeline for "Iterative Protein Crystal-structure Automatic Solution" developed in the "Institute of Physics, Chinese Academy of Sciences".
The name SAPI is an abbreviation of "Structure Analysis Programs with Intelligent control". It may also be read inversely as "Institute of Physics, Academia Sinica". SAPI is written in Fortran for crystallographic calculations and C++ for graphic operations. SAPI is based on MULTAN and differs from it mainly by the ability of resolving phase ambiguities due to pseudo symmetry.
A program of direct-method phasing based on a partial model with or without SAD/SIR information.