Chains and heterogens:
PDB Chain Sequences:
>1yvnA (A:) mdsevaalvidngsgmckagfagddapravfpsivgrprhqgimvgmgqkdsyvgdeaqs krgiltlrypiehgivtnwddmekiwhhtfynelrvapeehpvllteapmnpksnrekmt qimfetfnvpafyvsiqavlslyssgrttgivldsgdgnthvvpiyagfslphailridl agrdltdylmkilsergysfsttaereivrdikeklcyvaldfeqemqtaaqsssieksy elpdgqvitignerfrapealfhpsvlglesagidqttynsimkcdvdvrkelygnivms ggttmfpgiaermqkeitalapssmkvkiiapperkysvwiggsilaslttfqqmwiskq eydesgpsivhhkcf
>1yvnA (A:) evaalvidngsgmckagfagddapravfpsivgrprhqgimvgmgqkdsyvgdeaqskrg iltlrypiehgivtnwddmekiwhhtfynelrvapeehpvllteapmnpksnrekmtqim fetfnvpafyvsiqavlslyssgrttgivldsgdgnthvvpiyagfslphailridlagr dltdylmkilsergysfsttaereivrdikeklcyvaldfeqemqtaaqsssieksyelp dgqvitignerfrapealfhpsvlglesagidqttynsimkcdvdvrkelygnivmsggt tmfpgiaermqkeitalapssmkvkiiapperkysvwiggsilaslttfqqmwiskqeyd esgpsivhhkcf
>1yvnG (G:) mvvehpeflkagkepglqiwrvekfdlvpvptnlygdfftgdayvilktvqlrngnlqyd lhywlgnecsqdesgaaaiftvqlddylngravqhrevqgfesatflgyfksglkykkgg vasgf