cleft     
 Adj [partido, dividido]  

~ N ~ lip, ~ palate
  The association of this factor with cleft lip and cleft palate is examined.

 N [fisura, grieta, hendidura] cleft, clefts

N ~ active-site ~
  The residues move to open the active-site cleft upon substrate binding.

~ Adj ~ oral, ~ facial | ~ deep
  association of oral cleft with prenatal exposure to these elements | a deep cleft at the junction of four helices

~ V ~ exist
  The active-site cleft exists at the interface.

~ Prep ~ between | ~ of
  a cleft between the two subunits | a cleft of the palate