1M9N	Transferase, Hydrolase	date	Jul 29, 2002
title	Crystal Structure Of The Homodimeric Bifunctional Transformy Cyclohydrolase Enzyme Avian Atic In Complex With Aicar And 1.93 Angstroms.
authors	D.W.Wolan, S.E.Greasly, G.P.Beardsley, I.A.Wilson
compound		source
Molecule: Aicar Transformylase-Imp Cyclohydrolase Chain: A, B Synonym: Bifunctional Purine Biosynthesis Protein Purh [Inc Phosphoribosylaminoimidazolecarboxamide Formyltransferase ( Transformylase) And Imp Cyclohydrolase (Inosinicase, Imp Sy Atic)]; Ec: 2.1.2.3, 3.5.4.10 Engineered: Yes		Organism_scientific: Gallus Gallus Organism_common: Chicken Organism_taxid: 9031 Gene: Purh Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet28a
symmetry	Space Group: P 1 21 1	R_factor 0.206 R_Free 0.244
crystal cell	length a length b length c angle alpha angle beta angle gamma 56.480 107.880 103.860 90.00 91.20 90.00
method	X-Ray Diffraction	resolution	1.93 Å
ligand	AMZ, K, XMP	enzyme	Transferase E.C.2.1.2.3 BRENDA
related structures	by homologous chain: 1OZ0, 1PKX
Gene Ontology	Chain Function Process Component A, B
Primary reference	Structural insights into the avian AICAR transformylase mechanism., Wolan DW, Greasley SE, Beardsley GP, Wilson IA, Biochemistry 2002 Dec 31;41(52):15505-13. PMID:12501179

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (195 Kb) [Save to disk] Biological Unit Coordinates (1m9n.pdb1.gz) 187 Kb LPC: Ligand-Protein Contacts for 1M9N CSU: Contacts of Structural Units for 1M9N Likely Quarternary Molecular Structure file(s) for 1M9N Structure Factors (1467 Kb) Retrieve 1M9N in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1M9N from S2C, [Save to disk] Re-refined 1m9n structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1M9N 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 1M9N

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 1M9N, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1m9na2, region A:201-593 [Jmol] [rasmolscript] [script source]     - Domain d1m9na1, region A:4-200 [Jmol] [rasmolscript] [script source]     - Domain d1m9nb2, region B:201-593 [Jmol] [rasmolscript] [script source]     - Domain d1m9nb1, region B:4-200 [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: [1m9n] [1m9n_B] [1m9n_A] SWISS-PROT database: [P31335] Domain organization of [PUR9_CHICK] by SWISSPFAM Domains found in 1M9N: [AICARFT_IMPCHas] [MGS ] by SMART

Other resources with information on 1M9N

Community annotation for 1M9N at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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