Chains and heterogens:
PDB Chain Sequences:
>1kb5A (A:) qqvrqspqsltvwegetailncsyedstfnyfpwyqqfpgegpallisirsvsdkkedgr ftiffnkrekklslhitdsqpgdsatyfcaaryqggralifgtgttvsvspgsad
>1kb5B (B:) vtlleqnprwrlvprgqavnlrcilknsqypwmswyqqdlqkqlqwlftlrspgdkevks lpgadylatrvtdtelrlqvanmsqgrtlyctcsaapdwgasaetlyfgsgtrltvl
>1kb5H (H:) evqlqqsgpelekpgasvkisckasgysftgynmnwvkqsngkslewignidpyyggisy nqkfkgratltvdkssstaymqlksltsedsavyycarsrtdlyyfdywgqgttltvssa kttapsvyplapvcgdttgssvtlgclvkgyfpepvtltwnsgslssgvhtfpavlqsdl ytlsssvtvtsstwpsqsitcnvahpasstkvdkkiepr
>1kb5L (L:) diqmtqspaslsasvgetvtitcraskniysylawyqqkqgkspqllvynaktlgegvps rfsgsgsgtqfslkinslqpedfgsyycqhhygtpytfgggtkleikradaaptvsifpp sseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysmsstlt ltkdeyerhnsytceathktstspivksfnrnec