>6d4iA (A:) observed residues (from ATOM records)
gpsvflfppkpkdtlmisrtpevtcvvvdvsqeepdvkfnwyvdgvevhnaqtkpreeqf
nstyrvvsvltvthqdwlngkeytckvsnkalpaprqktvsktkgqprepqvytlpppre
eltknqvsltclvkgfypsdivvewasngqpentykttppvldsdgsyflyskltvdksr
wqqgntfscsvmhealhnhytqkslslsp