>1sr4A (A:) SEQRES residues snqrmndysqpesqsdlapksstiqpqpqpllsktpsmslnllsssgpnrqvlpsepsnf mtlmgqngalltvwalakrnwlwaypniysqdfgnirnwkmepgkhreyfrfvnqslgtc veaygnglihdicsldklaqefellptdsgavviksvsqgrcvtynpvsttfystvtlsv cdgatepsrdqtwylappvleatavn