Chains and heterogens:
PDB Chain Sequences:
>2xspA (A:) eqvgtqtaenhpkltvsqcsaggscttesrsvvldsnwrwlhttsgttncytgntwdasl cpdpvtcaqncaldgadysgtygistsgnaltlkfvtngpystnigsrvylmsaddtnye ifklknqefafdvdmsnlpcglngalyfvemdadgglsrfpnnkagskygtgycdtqcpq dikfingeanilgwtpsssdsnagtgqygsccnemdvweaninsaavtphvcnvqgqtrc sgtqcgdgderydgicdkdgcdfnsfrmgnqtflgpgktvntnskftvvtqfltsdnttt gtlheirrlyvqngkviansktniagmsqfdsitddfcnaqktafgdtnsfenlgglnvm gqafdkgvvlvmsvwddheanmlwldsdypttssastpgvargtcattsgvpanvesqnp nssvvfsnikigpigstyta