Chains and heterogens:
PDB Chain Sequences:
>1pahA (A:) tvpwfprtiqeldrfanqilsygaeldadhpgfkdpvyrarrkqfadiaynyrhgqpipr veymeeekktwgtvfktlkslykthacyeynhifpllekycgfhednipqledvsqflqt ctgfrlrpvagllssrdflgglafrvfhctqyirhgskpmytpepdichellghvplfsd rsfaqfsqeiglaslgapdeyieklatiywftvefglckqgdsikaygagllssfgelqy clsekpkllplelektaiqnytvtefqplyyvaesfndakekvrnfaatiprpfsvrydp ytqrievl