2SGP	Hydrolase Inhibitor	date	Mar 25, 1999
title	Pro 18 Variant Of Turkey Ovomucoid Inhibitor Third Domain Co With Streptomyces Griseus Proteinase B At Ph 6.5
authors	K.Huang, W.Lu, S.Anderson, M.Laskowski Jr., M.N.G.James
compound		source
Molecule: Proteinase B Chain: E Synonym: Sgpb Ec: 3.4.21.81		Organism_scientific: Streptomyces Griseus Organism_taxid: 1911 Strain: K1
Molecule: Ovomucoid Inhibitor Chain: I Fragment: Third Domain Synonym: Pro18-Omtky3 Engineered: Yes Mutation: Yes		Organism_scientific: Meleagris Gallopavo Organism_common: Turkey Organism_taxid: 9103 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Pezz318.Tky
symmetry	Space Group: P 1 21 1	R_factor 0.193 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 45.540 54.680 45.580 90.00 119.19 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	PO4	enzyme	Hydrolase E.C.3.4.21.81 BRENDA
related structures	by homologous chain: 2SGD, 3SGQ
Gene Ontology	Chain Function Process Component E 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] (42 Kb) [Save to disk] Biological Unit Coordinates (2sgp.pdb1.gz) 38 Kb LPC: Ligand-Protein Contacts for 2SGP CSU: Contacts of Structural Units for 2SGP Likely Quarternary Molecular Structure file(s) for 2SGP Retrieve 2SGP in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2SGP from S2C, [Save to disk]

View 2SGP 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 2SGP

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2SGP, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d2sgpe_, region E [Jmol] [rasmolscript] [script source]     - Domain d2sgpi_, 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: [2sgp_E] [2sgp] [2sgp_I] SWISS-PROT database: [P68390] [P00777] Domain organization of [IOVO_MELGA] [PRTB_STRGR] by SWISSPFAM Domains found in 2SGP: [KAZAL] [Tryp_SPc ] by SMART

Other resources with information on 2SGP

Community annotation for 2SGP at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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