General Structure Information 1ah1 CTLA4 ctla-4, nmr, 20 structures -1.0Å AUTH W.J.METZLER,J.BAJORATH,W.FENDERSON,S.Y.SHAW,K.L.CONSTANTINE,AUTH 2 J.NAEMURA,G.LEYTZE,R.J.PEACH,T.B.LAVOIE,L.MUELLER,AUTH 3 P.S.LINSLEYTITL SOLUTION STRUCTURE OF HUMAN CTLA-4 AND DELINEATION OF ATITL 2 CD80/CD86 BINDING SITE CONSERVED IN CD28.REF NAT.STRUCT.BIOL. V. 4 527 1997REFN ISSN 1072-8368PMID 9228944DOI 10.1038/NSB0797-527 Variant Set Distributions Mapped Variants