>3zf3A (A:) observed residues (from ATOM records)
tntlqvkllsknarmpernhktdagydifsaetvvlepqekaviktdvavsipegyvgll
tsrsgvsskthlvietgkidagihgnlginikndheddkmqtiflrnidnekifekerhl
yklgsyriekgeriaqlvivpiwtpelkqveefes