Chains and heterogens:
PDB Chain Sequences:
>1bs2A (A:) mastanmisqlkklsiaepavakdshpdvnivdlmrnyisqelskisgvdsslifpalew tntmergdllipiprlrikganpkdlavqwaekfpcgdflekveangpfiqfffnpqfla klvipdiltrkedygscklvenkkviiefsspniakpfhaghlrstiiggflanlyeklg wevirmnylgdwgkqfgllavgferygneealvkdpihhlfdvyvrinkdieeegdsipl eqstngkareyfkrmedgdeealkiwkrfrefsiekyidtyarlnikydvysgesqvske smlkaidlfkekglthedkgavlidltkfnkklgkaivqksdgttlyltrdvgaamdrye kyhfdkmiyviasqqdlhaaqffeilkqmgfewakdlqhvnfgmvqgmstrkgtvvfldn ileetkekmhevmkknenkyaqiehpeevadlvgisavmiqdmqgkrinnyefkwermls fegdtgpylqyahsrlrsvernasgitqekwinadfsllkepaakllirllgqypdvlrn aikthepttvvtylfklthqvsscydvlwvagqteelatarlalygaarqvlyngmrllg ltpverm
>1bs2A (A:) anmisqlkklsiaepavakdshpdvnivdlmrnyisqelskisgvdsslifpalewtntm ergdllipiprlrikganpkdlavqwaekfpcgdflekveangpfiqfffnpqflaklvi pdiltrkedygscklvenkkviiefsspniakpfhaghlrstiiggflanlyeklgwevi rmnylgdwgkqfgllavgferygneealvkdpihhlfdvyvrinkdieeegdsipleqst ngkareyfkrmedgdeealkiwkrfrefsiekyidtyarlnikydvysgesqvskesmlk aidlfkekglthedkgavlidltkfnkklgkaivqksdgttlyltrdvgaamdryekyhf dkmiyviasqqdlhaaqffeilkqmgfewakdlqhvnfgmvqgmstrkgtvvfldnilee tkekmhevmkknenkyaqiehpeevadlvgisavmiqdmqgkrinnyefkwermlsfegd tgpylqyahsrlrsvernasgitqekwinadfsllkepaakllirllgqypdvlrnaikt hepttvvtylfklthqvsscydvlwvagqteelatarlalygaarqvlyngmrllgltpv erm