Chains and heterogens:
PDB Chain Sequences:
>2z20A (A:) makrvntckcvatpqekieyktkvsrnsnmsklqagylfpeiarrrsahllkypdaqvis lgigdttepipevitsamakkahelstiegysgygaeqgakplraaiaktfygglgigdd dvfvsdgakcdisrlqvmfgsnvtiavqdpsypayvdssvimgqtgqfntdvqkygniey mrctpengffpdlstvgrtdiiffcspnnptgaaatreqltqlvefakkngsiivydsay amymsddnprsifeipgaeevametasfskyagftgvrlgwtvipkkllysdgfpvakdf nriictcfngasnisqagalacltpegleamhkvigfykentniiidtftslgydvyggk napyvwvhfpnqsswdvfaeilekthvvttpgsgfgpggegfvrvsafghrenileacrr fkqlykhhhhhh
>2z20A (A:) eyktkvsrnsnmsklqagylfpeiarrrsahllkypdaqvislgigdttepipevitsam akkahelstiegysgygaeqgakplraaiaktfygglgigdddvfvsdgakcdisrlqvm fgsnvtiavqdpsypayvdssvimgqtgqfntdvqkygnieymrctpengffpdlstvgr tdiiffcspnnptgaaatreqltqlvefakkngsiivydsayamymsddnprsifeipga eevametasfskyagftgvrlgwtvipkkllysdgfpvakdfnriictcfngasnisqag alacltpegleamhkvigfykentniiidtftslgydvyggknapyvwvhfpnqsswdvf aeilekthvvttpgsgfgpggegfvrvsafghrenileacrrfkqlykhhhh
>2z20B (B:) makrvntckcvatpqekieyktkvsrnsnmsklqagylfpeiarrrsahllkypdaqvis lgigdttepipevitsamakkahelstiegysgygaeqgakplraaiaktfygglgigdd dvfvsdgakcdisrlqvmfgsnvtiavqdpsypayvdssvimgqtgqfntdvqkygniey mrctpengffpdlstvgrtdiiffcspnnptgaaatreqltqlvefakkngsiivydsay amymsddnprsifeipgaeevametasfskyagftgvrlgwtvipkkllysdgfpvakdf nriictcfngasnisqagalacltpegleamhkvigfykentniiidtftslgydvyggk napyvwvhfpnqsswdvfaeilekthvvttpgsgfgpggegfvrvsafghrenileacrr fkqlykhhhhhh
>2z20B (B:) eyktkvsrnsnmsklqagylfpeiarrrsahllkypdaqvislgigdttepipevitsam akkahelstiegysgygaeqgakplraaiaktfygglgigdddvfvsdgakcdisrlqvm fgsnvtiavqdpsypayvdssvimgqtgqfntdvqkygnieymrctpengffpdlstvgr tdiiffcspnnptgaaatreqltqlvefakkngsiivydsayamymsddnprsifeipga eevametasfskyagftgvrlgwtvipkkllysdgfpvakdfnriictcfngasnisqag alacltpegleamhkvigfykentniiidtftslgydvyggknapyvwvhfpnqsswdvf aeilekthvvttpgsgfgpggegfvrvsafghrenileacrrfkqlykh