1GK9	Antibiotic Resistance	date	Aug 10, 2001
title	Crystal Structures Of Penicillin Acylase Enzyme-Substrate Complexes: Structural Insights Into The Catalytic Mechanism
authors	C.E.Mcvey, M.A.Walsh, G.G.Dodson, K.S.Wilson, J.A.Brannigan
compound		source
Molecule: Penicillin G Acylase Alpha Subunit Chain: A Fragment: N-Terminal Nucleophile Domain Residues 29-286 Synonym: Penicillin Amidohydrolase, Ntn, Penicillin G Amidase, Penicillin G Amidohydrolase; Ec: 3.5.1.11 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Atcc: 11105 Cellular_location: Periplasm Gene: Pac Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_cellular_location: Periplasm Expression_system_vector_type: Plasmid Expression_system_plasmid: Pacyc184pac Expression_system_gene: Pac
Molecule: Penicillin G Acylase Beta Subunit Chain: B Fragment: Residues 287-846 Ec: 3.5.1.11 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Atcc: 11105 Cellular_location: Periplasm Gene: Pac Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_cellular_location: Periplasm Expression_system_vector_type: Plasmid Expression_system_plasmid: Pacyc184pac Expression_system_gene: Pac
symmetry	Space Group: P 1 21 1	R_factor 0.148 R_Free 0.169
crystal cell	length a length b length c angle alpha angle beta angle gamma 51.300 131.600 63.900 90.00 105.90 90.00
method	X-Ray Diffraction	resolution	1.3 Å
ligand	CA, EDO	enzyme	Hydrolase E.C.3.5.1.11 BRENDA
note	1GK9 is a representative structure
related structures	by homologous chain: 1GKF
Gene Ontology	Chain Function Process Component A B
Primary reference	Crystal structures of penicillin acylase enzyme-substrate complexes: structural insights into the catalytic mechanism., McVey CE, Walsh MA, Dodson GG, Wilson KS, Brannigan JA, J Mol Biol 2001 Oct 12;313(1):139-50. PMID:11601852

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (158 Kb) [Save to disk] Biological Unit Coordinates (1gk9.pdb1.gz) 152 Kb LPC: Ligand-Protein Contacts for 1GK9 CSU: Contacts of Structural Units for 1GK9 Likely Quarternary Molecular Structure file(s) for 1GK9 Structure Factors (1372 Kb) Retrieve 1GK9 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1GK9 from S2C, [Save to disk] Re-refined 1gk9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1GK9 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 1GK9

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Structure-derived information

Conformational Epitope Prediction for 1GK9 1GK9A 1GK9B from the CEP Server. Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1GK9, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1gk9.1, region A:,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: [1gk9] [1gk9_B] [1gk9_A] SWISS-PROT database: [P06875] Domain organization of [PAC_ECOLX] by SWISSPFAM

Other resources with information on 1GK9

Community annotation for 1GK9 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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