Chains and heterogens:
PDB Chain Sequences:
>1igtA (A:) divltqspsslsaslgdtititchasqninvwlswyqqkpgnipklliykasnlhtgvps rfsgsgsgtgftltisslqpediatyycqqgqsypltfgggtkleikradaaptvsifpp sseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysmsstlt ltkdeyerhnsytceathktstspivksfnrnec
>1igtB (B:) evklqesggglvqpggslklscatsgftfsdyymywvrqtpekrlewvayisngggstyy pdtvkgrftisrdnakntlylqmsrlksedtamyycarhggyyamdywgqgttvtvssak ttapsvyplapvcgdttgssvtlgclvkgyfpepvtltwnsgslssgvhtfpavlqsdly tlsssvtvtsstwpsqsitcnvahpasstkvdkkieprgptikpcppckcpapnllggps vfifppkikdvlmislspivtcvvvdvseddpdvqiswfvnnvevhtaqtqthredynst lrvvsalpiqhqdwmsgkefkckvnnkdlpapiertiskpkgsvrapqvyvlpppeeemt kkqvtltcmvtdfmpediyvewtnngktelnykntepvldsdgsyfmysklrvekknwve rnsyscsvvheglhnhhttksfsr
>1igtC (C:) divltqspsslsaslgdtititchasqninvwlswyqqkpgnipklliykasnlhtgvps rfsgsgsgtgftltisslqpediatyycqqgqsypltfgggtkleikradaaptvsifpp sseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysmsstlt ltkdeyerhnsytceathktstspivksfnrnec
>1igtD (D:) evklqesggglvqpggslklscatsgftfsdyymywvrqtpekrlewvayisngggstyy pdtvkgrftisrdnakntlylqmsrlksedtamyycarhggyyamdywgqgttvtvssak ttapsvyplapvcgdttgssvtlgclvkgyfpepvtltwnsgslssgvhtfpavlqsdly tlsssvtvtsstwpsqsitcnvahpasstkvdkkieprgptikpcppckcpapnllggps vfifppkikdvlmislspivtcvvvdvseddpdvqiswfvnnvevhtaqtqthredynst lrvvsalpiqhqdwmsgkefkckvnnkdlpapiertiskpkgsvrapqvyvlpppeeemt kkqvtltcmvtdfmpediyvewtnngktelnykntepvldsdgsyfmysklrvekknwve rnsyscsvvheglhnhhttksfsr