3L33	Hydrolase Cell Adhesion	date	Dec 16, 2009
title	Human Mesotrypsin Complexed With Amyloid Precursor Protein Inhibitor(Appi)
authors	M.A.Salameh, A.S.Soares, E.S.Radisky
compound		source
Molecule: Trypsin-3 Chain: A, B, C, D Fragment: Trypsin-3 Synonym: Trypsin III, Brain Trypsinogen, Mesotrypsinogen, T Serine Protease 3, Serine Protease 4; Ec: 3.4.21.4 Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Strain: Bl21(De3) Gene: Prss3, Prss4, Try3, Try4 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid
Molecule: Amyloid Beta A4 Protein Chain: E, F, G, H Fragment: Unp Residues 290-341 Synonym: Alzheimer Disease Amyloid Protein, Abpp, Appi, App Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: App, A4, Ad1 Expression_system: Pichia Pastoris Expression_system_taxid: 4922
symmetry	Space Group: P 2 21 21	R_factor 0.198 R_Free 0.256
crystal cell	length a length b length c angle alpha angle beta angle gamma 92.793 130.067 132.338 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.48 Å
ligand	CA, FMT	enzyme	Hydrolase E.C.3.4.21.4 BRENDA
Primary reference	Determinants of affinity and proteolytic stability in interactions of Kunitz family protease inhibitors with mesotrypsin., Salameh MA, Soares AS, Navaneetham D, Sinha D, Walsh PN, Radisky ES, J Biol Chem. 2010 Nov 19;285(47):36884-96. Epub 2010 Sep 22. PMID:20861008

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (366 Kb) [Save to disk] Biological Unit Coordinates (3l33.pdb1.gz) 93 Kb Biological Unit Coordinates (3l33.pdb2.gz) 93 Kb Biological Unit Coordinates (3l33.pdb3.gz) 93 Kb Biological Unit Coordinates (3l33.pdb4.gz) 93 Kb LPC: Ligand-Protein Contacts for 3L33 CSU: Contacts of Structural Units for 3L33 Structure Factors (759 Kb) Retrieve 3L33 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3L33 from S2C, [Save to disk] Re-refined 3l33 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3L33 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 3L33

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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 3L33, from MSDmotif at EBI Fold representative 3l33 from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3l33_A] [3l33_B] [3l33_C] [3l33_D] [3l33_E] [3l33_F] [3l33_G] [3l33_H] SWISS-PROT database: Domain organization of by SWISSPFAM Alignments of the sequence of 3L33 with the sequences similar proteins can be viewed for 3L33's classification 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 at ProtoMap. Click on the Cluster number.

Other resources with information on 3L33

Community annotation for 3L33 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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