Chains and heterogens:
PDB Chain Sequences:
>2b1pA (A:) nqfysvevgdstftvlkryqnlkpigsgaqgivcaaydavldrnvaikklsrpfqnqtha krayrelvlmkcvnhkniisllnvftpqktleefqdvylvmelmdanlcqviqmeldher msyllyqmlcgikhlhsagiihrdlkpsnivvksdctlkildfglartagtsfmmtpyvv tryyrapevilgmgykenvdiwsvgcimgemvrhkilfpgrdyidqwnkvieqlgtpcpe fmkklqptvrnyvenrpkyagltfpklfpdslfpadsehnklkasqardllskmlvidpa krisvddalqhpyinvwydpaeveapppqiydkqlderehtieewkeliykevmn
>2b1pA (A:) nqfysvevgdstftvlkryqnlkpigsggivcaaydavldrnvaikklsrpfqnqthakr ayrelvlmkcvnhkniisllnvftpqktleefqdvylvmelmdanlcqviqmeldherms yllyqmlcgikhlhsagiihrdlkpsnivvksdctlkildfgltryyrapevilgmgyke nvdiwsvgcimgemvrhkilfpgrdyidqwnkvieqlgtpcpefmkklqptvrnyvenrp kyagltfpklfpdslfpadsehnklkasqardllskmlvidpakrisvddalqhpyinvw ydpaeveapppderehtieewkeliykevmn