Chains and heterogens:
PDB Chain Sequences:
>1tvlA (A:) msltradfiqfgamihgvggttdgwrhpdvdpsastniefymkkaqtaekglfsfifiad glfiseksiphflnrfepitilsalasvtkniglvgtfstsftepftisrqlmsldhisg gragwnlvtspqegaarnhsksnlpehteryeiaqehldvvrglwnswehdafihnkktg qffdqaklhrlnhkgkyfqvegplnigrskqgepvvfqagssetgrqfaaknadaifths nsleetkafyadvksraadegrdpssvrifpgispivadteeeaekkyrefaelipiena vtylarffddydlsvypldepfpdigdvgknafqsttdrikreakarnltlrevaqemaf prtlfigtpervaslietwfnaeaadgfivgsdipgtldafvekvipilqerglyrqdyr ggtlrenlglgipqhqsvlhsshheggshhhhhh
>1tvlA (A:) radfiqfgamihgvggttdgwrhpdvdpsastniefymkkaqtaekglfsfifiadglfi seksiphflnrfepitilsalasvtkniglvgtfstsftepftisrqlmsldhisggrag wnlvtspqegaarnhsksnlpehteryeiaqehldvvrglwnswehdafihnkktgqffd qaklhrlnhkgkyfqvegplnigrskqgepvvfqagssetgrqfaaknadaifthsnsle etkafyadvksraadegrdpssvrifpgispivadteeeaekkyrefaelipienavtea karnltlrevaqemafprtlfigtpervaslietwfnaeaadgfivgsdipgtldafvek vipilqerglyrqdyrggtlrenlglgipq