1N69	Lipid Binding Protein	date	Nov 08, 2002
title	Crystal Structure Of Human Saposin B
authors	V.E.Ahn, K.F.Faull, J.P.Whitelegge, A.L.Fluharty, G.G.Prive
compound		source
Molecule: Saposin B Chain: A, B, C Synonym: Proactivator Polypeptide, Sap-B, Sphingolipid Acti Protein 1, Sap-1, Cerebroside Sulfate Activator, Csact, Cs- Sulfatidegm1 Activator, Galactosylcerbroside Activator; Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Prosaposin, Psap Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Ad494(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet-16(B)
symmetry	Space Group: P 31 2 1	R_factor 0.222 R_Free 0.262
crystal cell	length a length b length c angle alpha angle beta angle gamma 72.140 72.140 94.366 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.20 Å
ligand	3PE, PEH	enzyme
Gene Ontology	Chain Function Process Component A, C, B
Primary reference	Crystal structure of saposin B reveals a dimeric shell for lipid binding., Ahn VE, Faull KF, Whitelegge JP, Fluharty AL, Prive GG, Proc Natl Acad Sci U S A 2003 Jan 7;100(1):38-43. PMID:12518053

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (45 Kb) [Save to disk] Biological Unit Coordinates (1n69.pdb1.gz) 27 Kb Biological Unit Coordinates (1n69.pdb2.gz) 26 Kb LPC: Ligand-Protein Contacts for 1N69 CSU: Contacts of Structural Units for 1N69 Likely Quarternary Molecular Structure file(s) for 1N69 Structure Factors (122 Kb) Retrieve 1N69 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1N69 from S2C, [Save to disk] Re-refined 1n69 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1N69 in 3D

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Visual 3D analysis of 1N69

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 1N69, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1n69a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1n69b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1n69c_, region C [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: [1n69_C] [1n69_A] [1n69] [1n69_B] SWISS-PROT database: [P07602] Belongs to the amoebapore (amoebapore) family according to TCDB. Domain organization of [SAP_HUMAN] by SWISSPFAM Domain found in 1N69: [SapB ] by SMART

Other resources with information on 1N69

Community annotation for 1N69 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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