NAME cro_thr
TYPES BRANCH_LOWER_TERMINUS_VARIANT

BEGIN_SELECTOR
PROPERTY PROTEIN
AA THR TRX
NOT VARIANT_TYPE BRANCH_LOWER_TERMINUS_VARIANT
END_SELECTOR

BEGIN_CASE ## THR ##################################################

SET_IO_STRING TRX T
SET_INTERCHANGEABILITY_GROUP TRX

DELETE_ATOM O

ADD_CONNECT C ICOOR  -180.000000   59.199940    1.231016   C     CA  UPPER

DELETE_PROPERTY CANONICAL_AA
ADD_PROPERTY CHARGED
ADD_PROPERTY BRANCH_LOWER_TERMINUS

END_CASE