Chains and heterogens:
PDB Chain Sequences:
>1cg3A (A:) gnnvvvlgtqwgdegkgkivdllterakyvvryqgghnaghtlvingektvlhlipsgil renvtsiigngvvlspaalmkemkeledrgipvrerlllseacplildyhvaldnareka rgakaigttgrgigpayedkvalrglrvgdlfdketfaeklkevmeyhnfqlvnyykaea vdyqkvlddtmavadiltsmvvdvsdlldqarqrgdfvmfegaqgtlldidhgtypyvts snttaggvatgsglgpryvdyvlgilkaystrvgagpfptelfdetgeflckqgnefgat tgrrrrtgwldtvavrravqlnslsgfcltkldvldglkevklcvayrmpdgrevtttpl aaddwkgvepiyetmpgwsestfgvkdrsglpqaalnyikrieeltgvpidiistgpdrt etmilrdpfda