>6ca6B (B:) observed residues (from ATOM records)
evqlvesggglvkpggslrlacvgseftfseawmtwvrqapgkglewvghmrptteggak
dyaaavrgrftiarddskstlylqmnslkiedtgvyycmtgvergdfwsddysqhyntyl
idvwgkgttvtvssastkgpsvfplapgtaalgclvkdyfpepvtvswnsgaltsgvhtf
pavlqssglyslssvvtvpssslgtqtyicnvnhkpsntkvdkrvep