>2j21B (B:) observed residues (from ATOM records) svpsqktyqgsygfrlgflhvtctyspalnklfcqlaktcpvqlwvdstpppgtrvrama iykqsqhmtevvrrcphhercsdsdglappqhlirvegnlraeylddrntfrhsvvvpye ppevgsdcttihynymcysscmggmnrrpiltiitledssgnllgrdsfevrvcacpgrd wrteeenl