Chains and heterogens:
PDB Chain Sequences:
>1ud3A (A:) dglngtmmqyyewhlendgqhwnrlhddaaalsdagitaiwippaykgnsqadvgygayd lydlgefnqkgtvrtkygtkaqleraigslksndinvygdvvmnhkmgadfteavqavqv nptnrwqdisgaytidawtgfdfsgrnnaysdfkwrwfhfngvdwdqryqenhifrfant nwnwrvdeengnydyllgsnidfshpevqdelkdwgswftdeldldgyrldaikhipfwy tsdwvrhqrneadqdlfvvgeywkddvgalefyldemnwemslfdvplhynfyrasqqgg sydmrnilrgslveahpmhavtfvdnhdtqpgesleswvadwfkplayatiltreggypn vfygdyygipndnisakkdmidelldarqnyaygtqhdyfdhwdvvgwtregsssrpnsg latimsngpggskwmyvgrqnagqtwtdltgnngasvtingdgwgefftnggsvsvyvnq