1DS3	Hydrolase Inhibitor	date	Jan 06, 2000
title	Crystal Structure Of Omtky3-Ch2-Asp19i
authors	K.S.Bateman, K.Huang, S.Anderson, W.Lu, M.A.Qasim, M.Laskowski Jr M.N.G.James
compound		source
Molecule: Ovomucoid Chain: I Fragment: Third Domain (Omtky3) Engineered: Yes Mutation: Yes		Organism_scientific: Meleagris Gallopavo Organism_common: Turkey Organism_taxid: 9103 Expression_system: Escherichia Coli Expression_system_taxid: 562 Other_details: The Peptide Bond Between Leu18i(2lu) And Asp Been Reduced.
symmetry	Space Group: P 1 21 1	R_factor 0.196 R_Free 0.230
crystal cell	length a length b length c angle alpha angle beta angle gamma 23.152 36.092 26.135 90.00 97.51 90.00
method	X-Ray Diffraction	resolution	1.65 Å
ligand	DCL	enzyme
related structures	by homologous chain: 1CT2, 1DS2
Gene Ontology	Chain Function Process Component I
Primary reference	Contribution of peptide bonds to inhibitor-protease binding: crystal structures of the turkey ovomucoid third domain backbone variants OMTKY3-Pro18I and OMTKY3-psi[COO]-Leu18I in complex with Streptomyces griseus proteinase B (SGPB) and the structure of the free inhibitor, OMTKY-3-psi[CH2NH2+]-Asp19I., Bateman KS, Huang K, Anderson S, Lu W, Qasim MA, Laskowski M Jr, James MN, J Mol Biol 2001 Jan 26;305(4):839-49. PMID:11162096

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (12 Kb) [Save to disk] Biological Unit Coordinates (1ds3.pdb1.gz) 9 Kb LPC: Ligand-Protein Contacts for 1DS3 CSU: Contacts of Structural Units for 1DS3 Likely Quarternary Molecular Structure file(s) for 1DS3 Structure Factors (46 Kb) Retrieve 1DS3 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1DS3 from S2C, [Save to disk] Re-refined 1ds3 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1DS3 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 1DS3

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 1DS3, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ds3i_, region I [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: [1ds3_I] [1ds3] SWISS-PROT database: [P68390] Domain organization of [IOVO_MELGA] by SWISSPFAM Domain found in 1DS3: [KAZAL ] by SMART

Other resources with information on 1DS3

Community annotation for 1DS3 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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