>4kslX (X:) observed residues (from ATOM records)
mqifvktltgktitlevepsdtienvkakiqdkegippdqqrlifagkqledgrtlsdyn
iqkestlhlvlrlrggmqifvktltgktitlevepsdtienvkakiqdkegippdqqrli
fagkqledgrtlsdyniqkestlhlvlrl