Chains and heterogens:
PDB Chain Sequences:
>2r7aA (A:) aaerivvaggslteliyamgagervvgvdettsyppetaklphigywkqlssegilslrp dsvitwqdagpqivldqlraqkvnvvtlprvpatleqmyanirqlaktlqvpeqgdalvt qinqrlervqqnvaakkapvkamfilsaggsapqvagkgsvadailslagaenvathqqy ksysaesliaanpevivvtsqmvdgdinrlrsiagithtaawknqriitvdqnlilgmgp riadvveslhqqlwpq
>2r7aA (A:) aerivvaggslteliyamgagervvgvdettsyppetaklphigywkqlssegilslrpd svitwqdagpqivldqlraqkvnvvtlprvpatleqmyanirqlaktlqvpeqgdalvtq inqrlervqqnvaakkapvkamfilsaggsapqvagkgsvadailslagaenvathqqyk sysaesliaanpevivvtsqmvdgdinrlrsiagithtaawknqriitvdqnlilgmgpr iadvveslhqqlwpq
>2r7aB (B:) aaerivvaggslteliyamgagervvgvdettsyppetaklphigywkqlssegilslrp dsvitwqdagpqivldqlraqkvnvvtlprvpatleqmyanirqlaktlqvpeqgdalvt qinqrlervqqnvaakkapvkamfilsaggsapqvagkgsvadailslagaenvathqqy ksysaesliaanpevivvtsqmvdgdinrlrsiagithtaawknqriitvdqnlilgmgp riadvveslhqqlwpq
>2r7aC (C:) aaerivvaggslteliyamgagervvgvdettsyppetaklphigywkqlssegilslrp dsvitwqdagpqivldqlraqkvnvvtlprvpatleqmyanirqlaktlqvpeqgdalvt qinqrlervqqnvaakkapvkamfilsaggsapqvagkgsvadailslagaenvathqqy ksysaesliaanpevivvtsqmvdgdinrlrsiagithtaawknqriitvdqnlilgmgp riadvveslhqqlwpq
>2r7aC (C:) aerivvaggslteliyamgagervvgvdettsyppetaklphigywkqlssegilslrpd svitwqdagpqivldqlraqkvnvvtlprvpatleqmyanirqlaktlqvpeqgdalvtq inqrlervqqnvaakkapvkamfilsaggsapqvagkgsvadailslagaenvathqqyk sysaesliaanpevivvtsqmvdgdinrlrsiagithtaawknqriitvdqnlilgmgpr iadvveslhqqlwpq
>2r7aD (D:) aaerivvaggslteliyamgagervvgvdettsyppetaklphigywkqlssegilslrp dsvitwqdagpqivldqlraqkvnvvtlprvpatleqmyanirqlaktlqvpeqgdalvt qinqrlervqqnvaakkapvkamfilsaggsapqvagkgsvadailslagaenvathqqy ksysaesliaanpevivvtsqmvdgdinrlrsiagithtaawknqriitvdqnlilgmgp riadvveslhqqlwpq
>2r7aD (D:) aerivvaggslteliyamgagervvgvdettsyppetaklphigywkqlssegilslrpd svitwqdagpqivldqlraqkvnvvtlprvpatleqmyanirqlaktlqvpeqgdalvtq inqrlervqqnvaakkapvkamfilsaggsapqvagkgsvadailslagaenvathqqyk sysaesliaanpevivvtsqmvdgdinrlrsiagithtaawknqriitvdqnlilgmgpr iadvveslhqqlwpq