Chains and heterogens:
PDB Chain Sequences:
>1dakA (A:) skryfvtgtdtevgktvascallqaakaagyrtagykpvasgsektpeglrnsdalalqr nsslqldyatvnpytfaeptsphiisaqegrpieslvmsaglraleqqadwvlvegaggw ftplsdtftfadwvtqeqlpvilvvgvklgcinhamltaqviqhagltlagwvandvtpp gkrhaeymttltrmipapllgeipwlaenpenaatgkyinlall