Chains and heterogens:
PDB Chain Sequences:
>2xfrA (A:) mevnvkgnyvqvyvmlpldavsvnnrfekgdelraqlrklveagvdgvmvdvwwglvegk gpkaydwsaykqlfelvqkaglklqaimsfhqcggnvgdavnipipqwvrdvgtrdpdif ytdghgtrnieyltlgvdnqplfhgrsavqmyadymtsfrenmkefldagvivdievglg pagemrypsypqshgwsfpgigeficydkylqadfkaaaaavghpewefpndvgqyndtp ertqffrdngtylsekgrfflawysnnlikhgdrildeankvflgykvqlaikisgihww ykvpshaaeltagyynlhdrdgyrtiarmlkrhrasinftcaemrdseqssqamsapeel vqqvlsagwreglnvacenalprydptayntilrnarphginqsgppehklfgftylrls nqlvegqnyanfktfvdrmhanlprdpyvdpmaplprsgpeisiemilqaaqpklqpfpf qehtdlpvgptggmggqaegptcgmggqvkgptggmggqaedptsgiggelpatm
>2xfrA (A:) vnvkgnyvqvyvmlpldavsvnnrfekgdelraqlrklveagvdgvmvdvwwglvegkgp kaydwsaykqlfelvqkaglklqaimsfhqcggnvgdavnipipqwvrdvgtrdpdifyt dghgtrnieyltlgvdnqplfhgrsavqmyadymtsfrenmkefldagvivdievglgpa gemrypsypqshgwsfpgigeficydkylqadfkaaaaavghpewefpndvgqyndtper tqffrdngtylsekgrfflawysnnlikhgdrildeankvflgykvqlaikisgihwwyk vpshaaeltagyynlhdrdgyrtiarmlkrhrasinftcaemrdseqssqamsapeelvq qvlsagwreglnvacenalprydptayntilrnarphginqsgppehklfgftylrlsnq lvegqnyanfktfvdrmhanlprdpyvdpmaplprsgpeisiemilqaaqpklqpfpfqe htdlpvg