Chains and heterogens:
PDB Chain Sequences:
>4pmxA (A:) aaplaataskflgcaygaqqapgfaqywnkltpenggkwgsveavrdqmdwstldaayrf aqanqmpfqmhvmvwgnqqpewiktlrpaeqrreieqwfaavaqrypdiallevvnepln dppskadtgggnylqalggngdsgwewvlqsfrlarrhfphtklmindysitssaqatqk ylqivrllqrenlvdaigvqehafettpevavsvhrdnldalaatglpiyitefdldgpt daqqladykrvfpvfwehpavhgitlwgfrpglwrdkeaayliradgterpaltwlrdyv aahpgt