1M4B	Cytokine	date	Jul 02, 2002
title	Crystal Structure Of Human Interleukin-2 K43c Covalently Mod C43 With 2-[2-(2-Cyclohexyl-2-Guanidino-Acetylamino)-Acetyl (3-Mercapto-Propyl)-Propionamide
authors	M.A.Arkin, M.Randal, W.L.Delano, J.Hyde, T.N.Luong, J.D.Oslob, D.R L.Taylor, J.Wang, R.S.Mcdowell, J.A.Wells, A.C.Braisted
compound		source
Molecule: Interleukin-2 Chain: A Synonym: Il-2, T-Cell Growth Factor, Tcgf, Aldesleukin Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Prset
symmetry	Space Group: C 1 2 1	R_factor 0.245 R_Free 0.286
crystal cell	length a length b length c angle alpha angle beta angle gamma 98.488 35.102 36.642 90.00 97.52 90.00
method	X-Ray Diffraction	resolution	2.15 Å
ligand	NMP	enzyme
related structures	by homologous chain: 1M49, 1M4A
Gene Ontology	Chain Function Process Component A kinase activator activity positive regulation of inter...
Primary reference	Binding of small molecules to an adaptive protein-protein interface., Arkin MR, Randal M, DeLano WL, Hyde J, Luong TN, Oslob JD, Raphael DR, Taylor L, Wang J, McDowell RS, Wells JA, Braisted AC, Proc Natl Acad Sci U S A 2003 Feb 18;100(4):1603-8. Epub 2003 Feb 11. PMID:12582206

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (25 Kb) [Save to disk] Biological Unit Coordinates (1m4b.pdb1.gz) 20 Kb LPC: Ligand-Protein Contacts for 1M4B CSU: Contacts of Structural Units for 1M4B Likely Quarternary Molecular Structure file(s) for 1M4B Structure Factors (46 Kb) Retrieve 1M4B in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1M4B from S2C, [Save to disk] Re-refined 1m4b structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1M4B 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 1M4B

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1M4B, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1m4ba_, region A [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: [1m4b_A] [1m4b] SWISS-PROT database: [P60568] Domain organization of [IL2_HUMAN] by SWISSPFAM Domain found in 1M4B: [IL2 ] by SMART

Other resources with information on 1M4B

Community annotation for 1M4B at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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