Chains and heterogens:
PDB Chain Sequences:
>2ac2A (A:) srkkmgllvmafgtpykeedieryythirrgrkpepemlqdlkdryeaiggisplaqite qqahnleqhlneiqdeitfkayiglkhiepfiedavaemhkdgiteavsivlaphfstfs vqsynkrakeeaeklggltitsveswydepkfvtywvdrvketyasmpederenamlivs ahslpekikefgdpypdqlhesakliaegagvseyavgwqsegntpdpwlgpdvqdltrd lfeqkgyqafvyvpvgfvadhlevlydndyeckvvtddigasyyrpempnakpefidala tvvlkklgr