>4zqsB (B:) observed residues (from ATOM records)
mqifvktltgktitlevepsdtienvkakiqdkegippdqqrlifagkqledgrtlsdyn
iqkestlhlvlrlrggmqifvktltgktitlevepsdtienvkakiqdkegippdqqrli
fagkqledgrtlsdyniqkestlhlvlrl