3NN9	Hydrolase(O-Glycosyl)	date	Mar 28, 1991
title	Refined Atomic Structures Of N9 Subtype Influenza Virus Neur And Escape Mutants
authors	W.R.Tulip, J.N.Varghese, A.T.Baker, A.Vandonkelaar, W.G.Laver, R.G.Webster, P.M.Colman
compound		source
Molecule: Neuraminidase N9 Chain: A Ec: 3.2.1.18 Engineered: Yes		Organism_scientific: Unidentified Influenza Virus Organism_taxid: 11309
symmetry	Space Group: I 4 3 2	R_factor 0.178 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 185.100 185.100 185.100 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	BMA, CA, MAN, NAG	enzyme	Hydrolase E.C.3.2.1.18 BRENDA
related structures	by homologous chain: 1INY, 6NN9
Primary reference	Refined atomic structures of N9 subtype influenza virus neuraminidase and escape mutants., Tulip WR, Varghese JN, Baker AT, van Donkelaar A, Laver WG, Webster RG, Colman PM, J Mol Biol 1991 Sep 20;221(2):487-97. PMID:1920429

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (74 Kb) [Save to disk] Biological Unit Coordinates (3nn9.pdb1.gz) 262 Kb LPC: Ligand-Protein Contacts for 3NN9 CSU: Contacts of Structural Units for 3NN9 Likely Quarternary Molecular Structure file(s) for 3NN9 Structure Factors (210 Kb) Retrieve 3NN9 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3NN9 from S2C, [Save to disk] Re-refined 3nn9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3NN9 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 3NN9

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Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 3NN9, from MSDmotif at EBI Genome occurence of 3NN9's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d3nn9__, region [Jmol] [rasmolscript] [script source] Fold representative 3nn9 from FSSP and Dali (Families of Structurally Similar Proteins) 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: [3nn9_A] SWISS-PROT database: [P03472] Domain organization of [NRAM_I75A5] by SWISSPFAM Alignments of the sequence of 3NN9 with the sequences similar proteins can be viewed for 3NN9's classification [NRAM_I75A5] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [NRAM_I75A5] at ProtoMap. Click on the Cluster number.

Other resources with information on 3NN9

Community annotation for 3NN9 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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