1A0S	Outer Membrane Protein	date	Dec 07, 1997
title	Sucrose-Specific Porin
authors	K.Diederichs, W.Welte
compound		source
Molecule: Sucrose-Specific Porin Chain: P, Q, R Engineered: Yes		Organism_scientific: Salmonella Typhimurium Organism_taxid: 602 Cellular_location: Outer Membrane Gene: Scry Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: K-12, Ks 26 Expression_system_cellular_location: Outer Membrane Expression_system_vector_type: Bacterial Expression_system_plasmid: Pso112
symmetry	Space Group: P 32	R_factor 0.214 R_Free 0.228
crystal cell	length a length b length c angle alpha angle beta angle gamma 112.100 112.100 147.000 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.40 Å
ligand	CA	enzyme
related structures	by homologous chain: 1A0T
Gene Ontology	Chain Function Process Component Q, R, P
Primary reference	Structure of the sucrose-specific porin ScrY from Salmonella typhimurium and its complex with sucrose., Forst D, Welte W, Wacker T, Diederichs K, Nat Struct Biol 1998 Jan;5(1):37-46. PMID:9437428

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (200 Kb) [Save to disk] Biological Unit Coordinates (1a0s.pdb1.gz) 195 Kb LPC: Ligand-Protein Contacts for 1A0S CSU: Contacts of Structural Units for 1A0S Likely Quarternary Molecular Structure file(s) for 1A0S Structure Factors (204 Kb) Retrieve 1A0S in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1A0S from S2C, [Save to disk] Re-refined 1a0s structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1A0S 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 1A0S

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 1A0S, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1a0sp_, region P [Jmol] [rasmolscript] [script source]     - Domain d1a0sq_, region Q [Jmol] [rasmolscript] [script source]     - Domain d1a0sr_, region R [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: [1a0s_Q] [1a0s] [1a0s_R] [1a0s_P] SWISS-PROT database: [P22340] Belongs to the sugar porin (sp) family according to TCDB. Domain organization of [SCRY_SALTY] by SWISSPFAM

Other resources with information on 1A0S

Community annotation for 1A0S at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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