Chains and heterogens:
PDB Chain Sequences:
>1yal_ (-) ypqsidwrakgavtpvknqgacgscwafstiatveginkivtgnllelseqelvdcdkhs ygckggyqttslqyvanngvhtskvypyqakqykcratdkpgpkvkitgykrvpsncets flgalanqplsvlveaggkpfqlyksgvfdgpcgtkldhavtavgygtsdgknyiiikns wgpnwgekgymrlkrqsgnsqgtcgvykssyypfkgfa