Chains and heterogens:
PDB Chain Sequences:
>1bheA (A:) sdsrtvsepktpsscttlkadsstatstiqkalnncdqgkavrlsagstsvflsgplslp sgvsllidkgvtlravnnaksfenapsscgvvdkngkgcdafitavsttnsgiygpgtid gqggvklqdkkvswwelaadakvkklkqntprliqinksknftlynvslinspnfhvvfs dgdgftawkttiktpstarntdgidpmssknitiaysniatgddnvaikaykgraetrni silhndfgtghgmsigsetmgvynvtvddlkmngttnglriksdksaagvvngvrysnvv mknvakpividtvyekkegsnvpdwsditfkdvtsetkgvvvlngenakkpievtmknvk ltsdstwqiknvnvkk