Chains and heterogens:
PDB Chain Sequences:
>1k02A (A:) sfvkdfkpqalgdtnlfkpikignnellhravippltrmralhpgnipnrdwaveyytqr aqrpgtmiitegafispqaggydnapgvwseeqmvewtkifnaihekksfvwvnlwvlgw aafpdnlardglrydsasdnvfmdaeqeakakkannpqhsltkdeikqyikeyvqaakns iaagadgveihsangyllnqfldphsntrtdeyggsienrarftlevvdalveaighekv glrlspygvfnsmsggaetgivaqyayvagelekrakagkrlafvhlveprvtnpflteg egeyeggsndfvysiwkgpviragnfalhpevvreevkdkrtligygrffisnpdlvdrl ekglplnkydrdtfyqmsahgyidyptyeealklgwdkk