3CTZ	Hydrolase	date	Apr 15, 2008
title	Structure Of Human Cytosolic X-Prolyl Aminopeptidase
authors	X.Li, Z.Lou, Z.Rao
compound		source
Molecule: Xaa-Pro Aminopeptidase 1 Chain: A Synonym: X-Pro Aminopeptidase 1, X-Prolyl Aminopeptidase 1, Soluble, Cytosolic Aminopeptidase P, Soluble Aminopeptidase P, Samp, Aminoacylproline Aminopeptidase; Ec: 3.4.11.9 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Gene: Xpnpep1 Expression_system: Escherichia Coli Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet28a
symmetry	Space Group: C 2 2 21	R_factor 0.154 R_Free 0.196
crystal cell	length a length b length c angle alpha angle beta angle gamma 71.444 131.429 169.076 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.60 Å
ligand	CA, MN, NA, P6G	enzyme	Hydrolase E.C.3.4.11.9 BRENDA
note	3CTZ is a representative structure
Gene Ontology	Chain Function Process Component A aminopeptidase activity peptidase activity metallopeptidase activity hydrolase activity manganese ion binding protein homodimerization act... metal ion binding metalloaminopeptidase activi... proteolysis bradykinin catabolic process... cytoplasm cytosol

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (252 Kb) [Save to disk] Biological Unit Coordinates (3ctz.pdb1.gz) 489 Kb LPC: Ligand-Protein Contacts for 3CTZ CSU: Contacts of Structural Units for 3CTZ Likely Quarternary Molecular Structure file(s) for 3CTZ Structure Factors (1523 Kb) Retrieve 3CTZ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3CTZ from S2C, [Save to disk] Re-refined 3ctz structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3CTZ 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 3CTZ

Cartoon representation from PDB Cartoon 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 Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 3CTZ, from MSDmotif at EBI Fold representative 3ctz from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3ctz_A] SWISS-PROT database: [Q9NQW7] Domain organization of [XPP1_HUMAN] by SWISSPFAM Alignments of the sequence of 3CTZ with the sequences similar proteins can be viewed for 3CTZ's classification [XPP1_HUMAN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [XPP1_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 3CTZ

Community annotation for 3CTZ at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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