>1i3r_A mol:protein length:192 H-2 CLASS II HISTOCOMPATIBILITY ANTIGEN, E-K ALPHA CHAIN IKEEHTIIQAQFYLLPDKRGEFMFDFDGDEIFHVDIEKSETIWRLEEFAKFASFEAQGA LANIAVNKANLDVMKERSNNTPDANVAPEVTVLSRSPVNLGEPNILICFIDKFSPPVVN VTWLRNGRPVTEGVSETVFLPRDDHLFRKFHYLTFLPSTDDFYDCEVDHWGLEEPLRKH WEFEEKTLLPETKEN