1sq2: Difference between revisions
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==Overview== | ==Overview== | ||
Cartilaginous fish are the phylogenetically oldest living organisms known | Cartilaginous fish are the phylogenetically oldest living organisms known to possess components of the vertebrate adaptive immune system. Key to their immune response are heavy-chain, homodimeric immunoglobulins called new antigen receptors (IgNARs), in which the variable (V) domains recognize antigens with only a single immunoglobulin domain, akin to camelid heavy-chain V domains. The 1.45 angstrom resolution crystal structure of the type I IgNAR V domain in complex with hen egg-white lysozyme (HEL) reveals a minimal antigen-binding domain that contains only two of the three conventional complementarity-determining regions but still binds HEL with nanomolar affinity by means of a binding interface comparable in size to conventional antibodies. | ||
==About this Structure== | ==About this Structure== | ||
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[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Dooley, H.]] | [[Category: Dooley, H.]] | ||
[[Category: Flajnik, M | [[Category: Flajnik, M F.]] | ||
[[Category: Stanfield, R | [[Category: Stanfield, R L.]] | ||
[[Category: Wilson, I | [[Category: Wilson, I A.]] | ||
[[Category: CL]] | [[Category: CL]] | ||
[[Category: EDO]] | [[Category: EDO]] | ||
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[[Category: protein-protein complex]] | [[Category: protein-protein complex]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 15:04:01 2008'' | ||