>1mx4B (B:) observed residues (from ATOM records)
pwgnelasaaargdleqltsllqnnvnvnaqngfgrtalqvmklgnpeiarrlllrganp
dlkdrtgfavihdaaragqldtlqtllefqadvniednegnlplhlaakeghlrvveflv
khtasnvghrnhkgdtacdlarlygrnevvslmqangag