1NCA	Hydrolase(O-Glycosyl)	date	Jan 21, 1992
title	Refined Crystal Structure Of The Influenza Virus N9 Neuramin Fab Complex
authors	W.R.Tulip, J.N.Varghese, P.M.Colman
compound		source
Molecule: Influenza A Subtype N9 Neuraminidase Chain: N Ec: 3.2.1.18		Organism_scientific: Influenza A Virus Organism_taxid: 384509 Strain: (Aternaustraliag70c1975(H11n9))
Molecule: Igg2a-Kappa Nc41 Fab (Light Chain) Chain: L		Organism_scientific: Mus Musculus Organism_common: House Mouse Organism_taxid: 10090
Molecule: Igg2a-Kappa Nc41 Fab (Heavy Chain) Chain: H		Organism_scientific: Mus Musculus Organism_common: House Mouse Organism_taxid: 10090
symmetry	Space Group: P 4 21 2	R_factor 0.191 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 167.000 167.000 124.000 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	BMA, CA, MAN, NAG	enzyme	Hydrolase E.C.3.2.1.18 BRENDA
note	1NCA (Molecule of the Month:pdb113)
related structures	by homologous chain: 15C8, 1CK0, 1NCB, 1NNA, 1RU9
Gene Ontology	Chain Function Process Component N
Primary reference	Refined crystal structure of the influenza virus N9 neuraminidase-NC41 Fab complex., Tulip WR, Varghese JN, Laver WG, Webster RG, Colman PM, J Mol Biol 1992 Sep 5;227(1):122-48. PMID:1381757

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (138 Kb) [Save to disk] Biological Unit Coordinates (1nca.pdb1.gz) 514 Kb Biological Unit Coordinates (1nca.pdb2.gz) 895 Kb LPC: Ligand-Protein Contacts for 1NCA CSU: Contacts of Structural Units for 1NCA Likely Quarternary Molecular Structure file(s) for 1NCA Structure Factors (253 Kb) Retrieve 1NCA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1NCA from S2C, [Save to disk] Re-refined 1nca structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1NCA 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 1NCA

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 1NCA, from MSDmotif at EBI Genome occurence of 1NCA's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ncah1, region H:1-113 [Jmol] [rasmolscript] [script source]     - Domain d1ncah2, region H:114-227 [Jmol] [rasmolscript] [script source]     - Domain d1ncal1, region L:1-108 [Jmol] [rasmolscript] [script source]     - Domain d1ncal2, region L:109-214 [Jmol] [rasmolscript] [script source]     - Domain d1ncan_, region N [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: [1nca_N] [1nca_L] [1nca] [1nca_H] SWISS-PROT database: [P01865] [P03472] Domain organization of [GCAM_MOUSE] [NRAM_I75A5] by SWISSPFAM Domains found in 1NCA: [IG_like] [IGv ] by SMART

Other resources with information on 1NCA

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

Movements, Movies and Images

Domain movements in 1NCA from the Database of Macromolecular Movements. Images from IMB Jena Image Library of Biological Macromolecules.

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