Chains and heterogens:
PDB Chain Sequences:
>3v4bA (A:) mhhhhhhssgvdlgtenlyfqsmkivdakvivtcpgrnfvtlkivtdqgiygigdatlng reksvvsyledylipvligrdpqqiediwqffyrgaywrrgpvgmtalaaidvalwdika klanmplyqllggksrerilsythangkdldstleavrkakdkgykairvqcgipgiakt ygvstntksyepadadlpsvevwstekylnyipdvfaavrkefgpdihllhdvhhrltpi eaarlgkalepyhlfwmedavpaenqesfklirqhtttplavgevfnsihdcreliqnqw idyirttivhaggisqmrriadfaslfhvrtgfhgatdlspvcmgaalhfdywvpnfgiq ehmahseqmnavfphaytfndgyftpgekpghgvdideklaaqypykraclpvnrledgt lwhw
>3v4bA (A:) mkivdakvivtcpgrnfvtlkivtdqgiygigdatlngreksvvsyledylipvligrdp qqiediwqffyrgaywrrgpvgmtalaaidvalwdikaklanmplyqllggksrerilsy thangkdldstleavrkakdkgykairvqcgipgidlpsvevwstekylnyipdvfaavr kefgpdihllhdvhhrltpieaarlgkalepyhlfwmedavpaenqesfklirqhtttpl avgevfnsihdcreliqnqwidyirttivhaggisqmrriadfaslfhvrtgfhgatdls pvcmgaalhfdywvpnfgiqehmahseqmnavfphaytfndgyftpgekpghgvdidekl aaqypykraclpvnrledgtlwhw