1KN9	Hydrolase	date	Dec 18, 2001
title	Crystal Structure Of A Bacterial Signal Peptidase Apo-Enzyme Implications For Signal Peptide Binding And The Ser-Lys Dya Mechanism.
authors	M.Paetzel, R.E.Dalbey, N.C.J.Strynadka
compound		source
Molecule: Signal Peptidase I Chain: A, B, C, D Fragment: Residues 76-323, Plus Initiating Methionine Synonym: Spase I, Leader Peptidase I Ec: 3.4.21.89 Engineered: Yes		Organism_scientific: Escherichia Coli K12 Organism_taxid: 83333 Strain: K-12 Gene: Lepb Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet3d
symmetry	Space Group: P 41 21 2	R_factor 0.239 R_Free 0.278
crystal cell	length a length b length c angle alpha angle beta angle gamma 112.441 112.441 198.675 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.40 Å
ligand		enzyme	Hydrolase E.C.3.4.21.89 BRENDA
related structures	by homologous chain: 1B12, 1IPH, 1T7D
Gene Ontology	Chain Function Process Component A, D, C, B
Primary reference	Crystal structure of a bacterial signal peptidase apoenzyme: implications for signal peptide binding and the Ser-Lys dyad mechanism., Paetzel M, Dalbey RE, Strynadka NC, J Biol Chem 2002 Mar 15;277(11):9512-9. PMID:11741964

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (148 Kb) [Save to disk] Biological Unit Coordinates (1kn9.pdb1.gz) 40 Kb Biological Unit Coordinates (1kn9.pdb2.gz) 37 Kb Biological Unit Coordinates (1kn9.pdb3.gz) 39 Kb Biological Unit Coordinates (1kn9.pdb4.gz) 35 Kb CSU: Contacts of Structural Units for 1KN9 Likely Quarternary Molecular Structure file(s) for 1KN9 Retrieve 1KN9 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1KN9 from S2C, [Save to disk]

View 1KN9 in 3D

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Visual 3D analysis of 1KN9

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1KN9, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1kn9a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1kn9b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1kn9c_, region C [Jmol] [rasmolscript] [script source]     - Domain d1kn9d_, region D [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1kn9_A] [1kn9_D] [1kn9_C] [1kn9_B] [1kn9] SWISS-PROT database: [P00803] Domain organization of [LEP_ECOLI] by SWISSPFAM

Other resources with information on 1KN9

Community annotation for 1KN9 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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