1NZI	Hydrolase	date	Feb 18, 2003
title	Crystal Structure Of The Cub1-Egf Interaction Domain Of Complement Protease C1s
authors	L.A.Gregory, N.M.Thielens, G.J.Arlaud, J.C.Fontecilla-Camps, C.Gaboriaud
compound		source
Molecule: Complement C1s Component Chain: A, B Fragment: Calcium-Dependent Interaction Domain Ec: 3.4.21.42 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: C1s Expression_system: Trichoplusia Ni Expression_system_common: Cabbage Looper Expression_system_taxid: 7111 Expression_system_cell_line: High Five Insect Cells Expression_system_vector_type: Baculovirus Expression_system_vector: Pbc1s
symmetry	Space Group: P 1	R_factor 0.216 R_Free 0.234
crystal cell	length a length b length c angle alpha angle beta angle gamma 35.134 47.499 56.679 87.74 78.04 75.67
method	X-Ray Diffraction	resolution	1.50 Å
ligand	CA, MG	enzyme	Hydrolase E.C.3.4.21.42 BRENDA
note	1NZI is a representative structure
Gene Ontology	Chain Function Process Component A, B
Primary reference	X-ray structure of the Ca2+-binding interaction domain of C1s. Insights into the assembly of the C1 complex of complement., Gregory LA, Thielens NM, Arlaud GJ, Fontecilla-Camps JC, Gaboriaud C, J Biol Chem 2003 Aug 22;278(34):32157-64. Epub 2003 Jun 4. PMID:12788922

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (63 Kb) [Save to disk] Biological Unit Coordinates (1nzi.pdb1.gz) 58 Kb LPC: Ligand-Protein Contacts for 1NZI CSU: Contacts of Structural Units for 1NZI Likely Quarternary Molecular Structure file(s) for 1NZI Structure Factors (385 Kb) Retrieve 1NZI in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1NZI from S2C, [Save to disk] Re-refined 1nzi structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1NZI 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 1NZI

Ramachandran plot from PDBSum

Structure-derived information

Conformational Epitope Prediction for 1NZI 1NZIA 1NZIB from the CEP Server. Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1NZI, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1nzia1, region A:1-117 [Jmol] [rasmolscript] [script source]     - Domain d1nzia2, region A:118-159 [Jmol] [rasmolscript] [script source]     - Domain d1nzib2, region B:118-159 [Jmol] [rasmolscript] [script source]     - Domain d1nzib1, region B:3-117 [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: [1nzi_A] [1nzi_B] [1nzi] SWISS-PROT database: [P09871] Domain organization of [C1S_HUMAN] by SWISSPFAM Domains found in 1NZI: [CUB] [EGF_CA ] by SMART

Other resources with information on 1NZI

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

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