1N51	Hydrolase Hydrolase Inhibitor	date	Nov 03, 2002
title	Aminopeptidase P In Complex With The Inhibitor Apstatin
authors	S.C.Graham, M.J.Maher, M.H.Lee, W.H.Simmons, H.C.Freeman, J.M.Gus
compound		source
Molecule: Xaa-Pro Aminopeptidase Chain: A Synonym: Aminopeptidase P Ec: 3.4.11.9 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Pepp Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: An1459 Expression_system_vector_type: Plasmid Expression_system_vector: Ppl450 Expression_system_plasmid: Ppl670
Molecule: Apstatin Chain: B Engineered: Yes		Synthetic: Yes Organism_scientific: Synthetic
symmetry	Space Group: I 41 2 2	R_factor 0.179 R_Free 0.204
crystal cell	length a length b length c angle alpha angle beta angle gamma 139.319 139.319 231.005 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	01B, MN, NH2	enzyme	Hydrolase E.C.3.4.11.9 BRENDA
related structures	by homologous chain: 1A16, 1AZ9
Gene Ontology	Chain Function Process Component A
Primary reference	Structure of Escherichia coli aminopeptidase P in complex with the inhibitor apstatin., Graham SC, Maher MJ, Simmons WH, Freeman HC, Guss JM, Acta Crystallogr D Biol Crystallogr 2004 Oct;60(Pt 10):1770-9. Epub 2004, Sep 23. PMID:15388923

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (85 Kb) [Save to disk] Biological Unit Coordinates (1n51.pdb1.gz) 312 Kb Biological Unit Coordinates (1n51.pdb2.gz) 157 Kb Biological Unit Coordinates (1n51.pdb3.gz) 310 Kb LPC: Ligand-Protein Contacts for 1N51 CSU: Contacts of Structural Units for 1N51 Likely Quarternary Molecular Structure file(s) for 1N51 Structure Factors (643 Kb) Retrieve 1N51 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1N51 from S2C, [Save to disk] Re-refined 1n51 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1N51 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 1N51

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 1N51, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1n51a1, region A:1-176 [Jmol] [rasmolscript] [script source]     - Domain d1n51a2, region A:177-440 [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: [1n51_B] [1n51] [1n51_A] SWISS-PROT database: [P15034] Domain organization of [AMPP_ECOLI] by SWISSPFAM Domain found in 1N51: [AMP_N ] by SMART

Other resources with information on 1N51

Community annotation for 1N51 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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