Chains and heterogens:
PDB Chain Sequences:
>3kpyA (A:) msgadrspnagaapdsapgqaavasayqrfepraylrnnyapprgdlcnpngvgpwklrc laqtfatgevsgrtlidigsgptvyqllsacshfeditmtdflevnrqelgrwlqeepga fnwsmysqhacliegkgecwqdkerqlrarvkrvlpidvhqpqplgagspaplpadalvs afcleavspdlasfqraldhittllrpgghllligaleeswylagearltvvpvseeevr ealvrsgykvrdlrtyimpahlqtgvddvkgvffawaqkvglehhhhhh
>3kpyA (A:) asayqrfepraylrnnyapprgdlcnpngvgpwklrclaqtfatgevsgrtlidigsgpt vyqllsacshfeditmtdflevnrqelgrwlqeepgafnwsmysqhacliegkgecwqdk erqlrarvkrvlpidvhqpqplgagspaplpadalvsafcleavspdlasfqraldhitt llrpgghllligaleeswylagearltvvpvseeevrealvrsgykvrdlrtyimpahlq tgvddvkgvffawaqkv
>3kpyB (B:) msgadrspnagaapdsapgqaavasayqrfepraylrnnyapprgdlcnpngvgpwklrc laqtfatgevsgrtlidigsgptvyqllsacshfeditmtdflevnrqelgrwlqeepga fnwsmysqhacliegkgecwqdkerqlrarvkrvlpidvhqpqplgagspaplpadalvs afcleavspdlasfqraldhittllrpgghllligaleeswylagearltvvpvseeevr ealvrsgykvrdlrtyimpahlqtgvddvkgvffawaqkvglehhhhhh
>3kpyB (B:) pdsapgqaavasayqrfepraylrnnyapprgdlcnpngvgpwklrclaqtfatgevsgr tlidigsgptvyqllsacshfeditmtdflevnrqelgrwlqeepgafnwsmysqhacli egkgecwqdkerqlrarvkrvlpidvhqpqplgagspaplpadalvsafcleavspdlas fqraldhittllrpgghllligaleeswylagearltvvpvseeevrealvrsgykvrdl rtyimpahlqtgvddvkgvffawaqkvg