1NHL	Protein Transport	date	Dec 19, 2002
title	Snap-23n Structure
authors	S.J.Freedman, H.K.Song, Y.Xu, M.J.Eck
compound		source
Molecule: Synaptosomal-Associated Protein 23 Chain: A Fragment: Snap-23 N-Terminal Coiled-Coil Domain Synonym: Snap-23, Vesicle-Membrane Fusion Protein Snap-23 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Snap23 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet
symmetry	Space Group: P 4 21 2	R_factor 0.273 R_Free 0.316
crystal cell	length a length b length c angle alpha angle beta angle gamma 34.905 34.905 81.691 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	MSE	enzyme
related structures	by homologous chain: 1JTH
Primary reference	Homotetrameric structure of the SNAP-23 N-terminal coiled-coil domain., Freedman SJ, Song HK, Xu Y, Sun ZY, Eck MJ, J Biol Chem 2003 Apr 11;278(15):13462-7. PMID:12556468

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (14 Kb) [Save to disk] Biological Unit Coordinates (1nhl.pdb1.gz) 10 Kb Biological Unit Coordinates (1nhl.pdb2.gz) 39 Kb LPC: Ligand-Protein Contacts for 1NHL CSU: Contacts of Structural Units for 1NHL Likely Quarternary Molecular Structure file(s) for 1NHL Structure Factors (56 Kb) Retrieve 1NHL in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1NHL from S2C, [Save to disk] Re-refined 1nhl structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1NHL 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 1NHL

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 1NHL, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1nhla_, region A [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: [1nhl] [1nhl_A] SWISS-PROT database: [O00161] Belongs to the synaptosomal vesicle fusion pore (svf-pore) family according to TCDB. Domain organization of [SNP23_HUMAN] by SWISSPFAM

Other resources with information on 1NHL

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

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