>4kbkC (C:) observed residues (from ATOM records)
rvgnryrlgrkigsgdiylgtdiaageevaiklecvktkhpqlhieskiykmmqggvgip
tirwcgaegdynvmvmellgpsledlfnfcsrkfslktvllladqmisrieyihsknfih
rdvkpdnflmglgkkgnlvyiidfglakkyhipyrenknltgtaryasinthlgieqsrr
ddleslgyvlmyfnlgslpwqglkaatkrqkyerisekkmstpievlckgypsefatyln
fcrslrfddkpdysylrqlfrnlfhrqgfsydyvfdwnml