CrossLinX CrossLinX is the acronym of protein CrossLINks eXplorer. It is meant for Cross links exploration (search) and vasualization. Some examples are NOS bond from LYS NZ (altLoc B) atom to CSO OD (altLoc B) atom. Isopeptide from LYS NZ atom to C-Terminus C atom. Isopeptide from LYS NZ to ASN CG atom.