Chains and heterogens:
PDB Chain Sequences:
>4kbcA (A:) melrvgnryrlgrkigsgsfgdiylgtdiaageevaiklecvktkhpqlhieskiykmmq ggvgiptirwcgaegdynvmvmellgpsledlfnfcsrkfslktvllladqmisrieyih sknfihrdvkpdnflmglgkkgnlvyiidfglakkyrdarthqhipyrenknltgtarya sinthlgieqsrrddleslgyvlmyfnlgslpwqglkaatkrqkyerisekkmstpievl ckgypsefatylnfcrslrfddkpdysylrqlfrnlfhrqgfsydyvfdwnmlkfgasra addaererrdreerlrh
>4kbcA (A:) elrvgnryrlgrkigsdiylgtdiaageevaiklecvktkhpqlhieskiykmmqggvgi ptirwcgaegdynvmvmellgpsledlfnfcsrkfslktvllladqmisrieyihsknfi hrdvkpdnflmglgkkgnlvyiidfglakkyrdarthqhipyrenknltgtaryasinth lgieqsrrddleslgyvlmyfnlgslpwqglkaatkrqkyerisekkmstpievlckgyp sefatylnfcrslrfddkpdysylrqlfrnlfhrqgfsydyvfdwnml
>4kbcB (B:) melrvgnryrlgrkigsgsfgdiylgtdiaageevaiklecvktkhpqlhieskiykmmq ggvgiptirwcgaegdynvmvmellgpsledlfnfcsrkfslktvllladqmisrieyih sknfihrdvkpdnflmglgkkgnlvyiidfglakkyrdarthqhipyrenknltgtarya sinthlgieqsrrddleslgyvlmyfnlgslpwqglkaatkrqkyerisekkmstpievl ckgypsefatylnfcrslrfddkpdysylrqlfrnlfhrqgfsydyvfdwnmlkfgasra addaererrdreerlrh
>4kbcB (B:) melrvyrlgrkigsgsfgdiylgtdiaageevaiklekhpqlhieskiykmmqggvgipt irwcgaegdynvmvmellgpsledlfnfcsrkfslktvllladqmisrieyihsknfihr dvkpdnflmglgkkgnlvyiidfglakkyrdarthqhipyrenknltgtaryasinthlg ieqsrrddleslgyvlmyfnlgslpwqglkyerisekkmstpievlckgypsefatylnf crslrfddkpdysylrqlfrnlfhrqgfsydyvfdwn