Chains and heterogens:
PDB Chain Sequences:
>1r3iC (C:) mapmlsgllarlvklllgrhgsalhwraagaatvllvivllagsylavlaergapgaqli typralwwsvetattvgygdlypvtlwgrcvavvvmvagitsfglvtaalatwfvgreqe rrgh
>1r3iC (C:) salhwraagaatvllvivllagsylavlaergapgaqlitypralwwsvetattvgygdl ypvtlwgrcvavvvmvagitsfglvtaalatwfvgreqerrgh
>1r3iH (H:) qvqlqqpgaelvkpgasvklsckasgytftsdwihwvkqrpghglewigeiipsygrany nekiqkkatltadkssstafmqlssltsedsavyycarergdgyfavwgagttvtvssak ttppsvyplapgsaaqtnsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdly tlsssvtvpssswpsetvtcnvahpasstkvdkkivprd
>1r3iL (L:) dilltqspailsvspgervsfscrasqsigtdihwyqqrtngsprllikyasesisgips rfsgsgsgtdftlsinsvesedianyycqqsnrwpftfgsgtkleikradaaptvsifpp sseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysmsstlt ltkdeyerhnsytceathktstspivksfnrn