ID 6.3.2.21 DE Ubiquitin--calmodulin ligase. AN Ubiquityl-calmodulin synthase. AN Ubiquityl-calmodulin synthetase. CA n ATP + calmodulin + n ubiquitin = n AMP + n diphosphate + CA (ubiquitin)(n)-calmodulin. CC -!- Specific for Ca(2+)-calmodulin from vertebrates. CC -!- At least 3 ubiquitin molecules can be coupled to lysine residues in CC calmodulin. //