Chains and heterogens:
PDB Chain Sequences:
>1vid_ (-) tkeqrilryvqqnakpgdpqsvleaidtyctqkewamnvgdakgqimdavireyspslvl elgaycgysavrmarllqpgarlltmemnpdyaaitqqmlnfaglqdkvtilngasqdli pqlkkkydvdtldmvfldhwkdrylpdtlllekcgllrkgtvlladnvivpgtpdflayv rgsssfecthyssyleymkvvdglekaiyqgps