1A8R	Hydrolase	date	Mar 27, 1998
title	Gtp Cyclohydrolase I (H112s Mutant) In Complex With Gtp
authors	G.Auerbach, H.Nar, A.Bracher, A.Bacher, R.Huber
compound		source
Molecule: Gtp Cyclohydrolase I Chain: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O Ec: 3.5.4.16 Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Organ: Brain Expression_system: Escherichia Coli Expression_system_taxid: 562 Other_details: Homologous Expression
symmetry	Space Group: C 2 2 21	R_factor 0.200 R_Free 0.246
crystal cell	length a length b length c angle alpha angle beta angle gamma 314.950 219.140 131.410 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.10 Å
ligand	GTP	enzyme	Hydrolase E.C.3.5.4.16 BRENDA
related structures	by homologous chain: 1N3S
Gene Ontology	Chain Function Process Component F, A, O, J, N, K, E, B, H, M, C, D, I, G, L
Primary reference	Biosynthesis of pteridines. Reaction mechanism of GTP cyclohydrolase I., Rebelo J, Auerbach G, Bader G, Bracher A, Nar H, Hosl C, Schramek N, Kaiser J, Bacher A, Huber R, Fischer M, J Mol Biol. 2003 Feb 14;326(2):503-16. PMID:12559918

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (550 Kb) [Save to disk] Biological Unit Coordinates (1a8r.pdb1.gz) 364 Kb Biological Unit Coordinates (1a8r.pdb2.gz) 366 Kb LPC: Ligand-Protein Contacts for 1A8R CSU: Contacts of Structural Units for 1A8R Likely Quarternary Molecular Structure file(s) for 1A8R Retrieve 1A8R in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1A8R from S2C, [Save to disk]

View 1A8R in 3D

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Visual 3D analysis of 1A8R

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1A8R, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1a8ra_, region A [Jmol] [rasmolscript] [script source]     - Domain d1a8rb_, region B [Jmol] [rasmolscript] [script source]     - Domain d1a8rc_, region C [Jmol] [rasmolscript] [script source]     - Domain d1a8rd_, region D [Jmol] [rasmolscript] [script source]     - Domain d1a8re_, region E [Jmol] [rasmolscript] [script source]     - Domain d1a8rf_, region F [Jmol] [rasmolscript] [script source]     - Domain d1a8rg_, region G [Jmol] [rasmolscript] [script source]     - Domain d1a8rh_, region H [Jmol] [rasmolscript] [script source]     - Domain d1a8ri_, region I [Jmol] [rasmolscript] [script source]     - Domain d1a8rj_, region J [Jmol] [rasmolscript] [script source]     - Domain d1a8rk_, region K [Jmol] [rasmolscript] [script source]     - Domain d1a8rl_, region L [Jmol] [rasmolscript] [script source]     - Domain d1a8rm_, region M [Jmol] [rasmolscript] [script source]     - Domain d1a8rn_, region N [Jmol] [rasmolscript] [script source]     - Domain d1a8ro_, region O [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: [1a8r] [1a8r_M] [1a8r_E] [1a8r_G] [1a8r_C] [1a8r_N] [1a8r_L] [1a8r_F] [1a8r_K] [1a8r_O] [1a8r_H] [1a8r_B] [1a8r_A] [1a8r_I] [1a8r_D] [1a8r_J] SWISS-PROT database: [P0A6T5] Domain organization of [GCH1_ECOLI] by SWISSPFAM

Other resources with information on 1A8R

Community annotation for 1A8R at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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