1QNH	Isomerase Immunosuppressant	date	Oct 14, 1999
title	Plasmodium Falciparum Cyclophilin (Double Mutant) Complexed Cyclosporin A
authors	M.R.Peterson, D.R.Hall, W.N.Hunter
compound		source
Molecule: Peptidyl-Prolyl Cis-Trans Isomerase Chain: A, B Synonym: Ppiase, Rotamase, Cyclophilin A Ec: 5.2.1.8 Engineered: Yes		Organism_scientific: Plasmodium Falciparum Organism_taxid: 5833 Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3)
Molecule: Cyclosporin A Chain: C, D Synonym: Cyclosporine, Ciclosporin, Ciclosporine Engineered: Yes		Synthetic: Yes Organism_scientific: Tolypocladium Inflatum Organism_taxid: 29910
symmetry	Space Group: P 21 21 2	R_factor 0.170 R_Free 0.210
crystal cell	length a length b length c angle alpha angle beta angle gamma 92.110 115.120 39.020 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.10 Å
ligand	ABA, BMT, DAL, MLE, MVA, SAR	enzyme	Isomerase E.C.5.2.1.8 BRENDA
related structures	by homologous chain: 1QNG
Gene Ontology	Chain Function Process Component A, B
Primary reference	The three-dimensional structure of a Plasmodium falciparum cyclophilin in complex with the potent anti-malarial cyclosporin A., Peterson MR, Hall DR, Berriman M, Nunes JA, Leonard GA, Fairlamb AH, Hunter WN, J Mol Biol 2000 Apr 21;298(1):123-33. PMID:10756109

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (67 Kb) [Save to disk] Biological Unit Coordinates (1qnh.pdb1.gz) 31 Kb Biological Unit Coordinates (1qnh.pdb2.gz) 31 Kb LPC: Ligand-Protein Contacts for 1QNH CSU: Contacts of Structural Units for 1QNH Likely Quarternary Molecular Structure file(s) for 1QNH Structure Factors (186 Kb) Retrieve 1QNH in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QNH from S2C, [Save to disk] Re-refined 1qnh structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1QNH 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 1QNH

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 1QNH, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qnha_, region A [Jmol] [rasmolscript] [script source]     - Domain d1qnhb_, region B [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: [1qnh_B] [1qnh] [1qnh_A] [1qnh_C] [1qnh_D] SWISS-PROT database: [Q25756] Domain organization of [Q25756_PLAFA] by SWISSPFAM

Other resources with information on 1QNH

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

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