Structural features of residue 53 in chain A ********************************* Protrusion Index: PRO A 53 N 0.26 PRO A 53 CA 0.16 PRO A 53 C 0.19 PRO A 53 O 0.12 PRO A 53 CB 0.11 PRO A 53 CG 0.13 PRO A 53 CD 0.22