Chains and heterogens:
PDB Chain Sequences:
>2q6zA (A:) fpelkndtflraawgeetdytpvwcmrqagrylpefretraaqdffstcrspeacceltl qplrrfpldaaiifsdilvvpqalgmevtmvpgkgpsfpeplreeqdlerlrdpevvase lgyvfqaitltrqrlagrvpligfagapwtlmtymverggsstmaqakrwlyqrpqashq llriltdalvpylvgqvvagaqalqlfeshaghlgpqlfnkfalpyirdvakqvkarlre aglapvpmiifakdghfaleelaqagyevvgldwtvapkkarecvgktvtlqgnldpcal yaseeeigqlvkqmlddfgphryianlghglypdmdpehvgafvdavhkhsrllrq