3.4.21.41 C309W the mutation is associated with periodontal Ehlers-Danlos syndrome 752432 3.4.21.41 C338R the mutation is associated with periodontal Ehlers-Danlos syndrome 752432 3.4.21.41 C358F the mutation is associated with periodontal Ehlers-Danlos syndrome 752432 3.4.21.41 C371W the mutation is associated with periodontal Ehlers-Danlos syndrome 752432 3.4.21.41 D290G the mutation is associated with periodontal Ehlers-Danlos syndrome 752432 3.4.21.41 G297D the mutation is associated with periodontal Ehlers-Danlos syndrome 752432 3.4.21.41 I306-C309del the deletion mutations are associated with periodontal Ehlers-Danlos syndrome 752432 3.4.21.41 L300P the mutation is associated with periodontal Ehlers-Danlos syndrome 752432 3.4.21.41 additional information by the point mutation of C1r - Arg-Phe - of the natural cleavage site Arg-Ile - the zymogen is stabilized, while the biological activity is not affected 81401 3.4.21.41 R301P the mutation is associated with periodontal Ehlers-Danlos syndrome 752432