>4kslD (D:) observed residues (from ATOM records) mqifvktltgktitlevepsdtienvkakiqdkegippdqqrlifagkqledgrtlsdyn iqkestlhlvlrlrggmqifvktltgktitlevepsdtienvkakiqdkegippdqqrli fagkqledgrtlsdyniqkestlhlvlrl