1EFX	Immune System	date	Feb 10, 2000
title	Structure Of A Complex Between The Human Natural Killer Cell Kir2dl2 And A Class I Mhc Ligand Hla-Cw3
authors	J.C.Boyington, S.A.Motyka, P.Schuck, A.G.Brooks, P.D.Sun
compound		source
Molecule: Hla-Cw3 (Heavy Chain) Chain: A Fragment: Extracellular Alpha-1, Alpha-2 And Alpha-3 Domain Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Modified Pet30a
Molecule: Beta-2-Microglobulin Chain: B Engineered: Yes Other_details: Mature Form		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Modified Pet30a
Molecule: Peptide From Importin Alpha-2 Chain: C Fragment: Residues 204-212 Engineered: Yes		Synthetic: Yes Other_details: This Peptide Was Chemically Synthesized. The Is Naturally Found In Homo Sapiens (Human).;
Molecule: Natural Killer Cell Receptor Kir2dl2 Chain: D, E Fragment: Extracellular D1 And D2 Domains Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Modified Pet30a
symmetry	Space Group: P 21 21 21	R_factor 0.231 R_Free 0.294
crystal cell	length a length b length c angle alpha angle beta angle gamma 68.540 90.330 207.270 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	3.00 Å
related structures	by homologous chain: 1B6U, 1E28, 1N3N, 2DL2
Gene Ontology	Chain Function Process Component B cellular response to iron io...
Primary reference	Crystal structure of an NK cell immunoglobulin-like receptor in complex with its class I MHC ligand., Boyington JC, Motyka SA, Schuck P, Brooks AG, Sun PD, Nature 2000 Jun 1;405(6786):537-43. PMID:10850706

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (125 Kb) [Save to disk] Biological Unit Coordinates (1efx.pdb1.gz) 119 Kb CSU: Contacts of Structural Units for 1EFX Likely Quarternary Molecular Structure file(s) for 1EFX Retrieve 1EFX in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1EFX from S2C, [Save to disk]

View 1EFX in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 1EFX

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1EFX, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1efxa2, region A:1-181 [Jmol] [rasmolscript] [script source]     - Domain d1efxa1, region A:182-278 [Jmol] [rasmolscript] [script source]     - Domain d1efxb_, region B [Jmol] [rasmolscript] [script source]     - Domain d1efxd2, region D:104-200 [Jmol] [rasmolscript] [script source]     - Domain d1efxd1, region D:4-103 [Jmol] [rasmolscript] [script source]     - Domain d1efxe2, region E:104-200 [Jmol] [rasmolscript] [script source]     - Domain d1efxe1, region E:4-103 [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1efx_E] [1efx_B] [1efx_C] [1efx_D] [1efx] [1efx_A] SWISS-PROT database: [P04222] [P61769] [P52292] [P43627] Belongs to the eukaryotic nuclear pore complex (e-npc) family according to TCDB. Domain organization of [1C03_HUMAN] [B2MG_HUMAN] [IMA2_HUMAN] [KI2L2_HUMAN] by SWISSPFAM Domains found in 1EFX: [IG] [IG_like] [IGc1 ] by SMART

Other resources with information on 1EFX

Community annotation for 1EFX at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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