>1xzcA (A:) observed residues (from ATOM records)
rttrddlingnsascadvifiyargstetgnlgtlgpsiasnlesafgkdgvwiqgvgga
yratlgdnalprgtssaairemlglfqqantkcpdatliaggysqgaalaaaciedldsa
irdkiagtvlfgytknlqnrgripnypadrtkvfcntgdlvctgslivaaphlaygpdar
gpapefliekvravrgs