Chains and heterogens:
PDB Chain Sequences:
>1p4vA (A:) ttnkpivlstwnfglhanveawkvlskggkaldavekgvrlveddptersvgyggrpdrd grvtldacimdenynigsvacmehiknpisvaravmektphvmlvgdgalefalsqgfkk enlltaesekewkewlktsqykpivnienhntigmialdaqgnlsgacttsgmaykmhgr vgdspiigaglfvdneigaatatghgeevirtvgthlvvelmnqgrtpqqackeaveriv kivnrrgknlkdiqvgfialnkkgeygayciqdgfnfavhdqkgnrletpgfalk
>1p4vC (C:) ttnkpivlstwnfglhanveawkvlskggkaldavekgvrlveddptersvgyggrpdrd grvtldacimdenynigsvacmehiknpisvaravmektphvmlvgdgalefalsqgfkk enlltaesekewkewlktsqykpivnienhntigmialdaqgnlsgacttsgmaykmhgr vgdspiigaglfvdneigaatatghgeevirtvgthlvvelmnqgrtpqqackeaveriv kivnrrgknlkdiqvgfialnkkgeygayciqdgfnfavhdqkgnrletpgfalk