2CTN	Calcium-Binding Protein	date	May 06, 1997
title	Structure Of Calcium-Saturated Cardiac Troponin C, Nmr, 30 S
authors	S.K.Sia, M.X.Li, L.Spyracopoulos, S.M.Gagne, W.Liu, J.A.Putkey, B.
compound		source
Molecule: Troponin C Chain: A Fragment: Regulatory N-Domain Residues 2 - 89 Synonym: Ctnc Engineered: Yes Mutation: Yes Other_details: Cardiac Troponin C With Calcium Ion Bound At		Organism_scientific: Gallus Gallus Organism_common: Chicken Organism_taxid: 9031 Cell_line: Bl21 Organ: Heart Tissue: Muscle Cellular_location: Thin Filament Gene: Ctnc(A-Cys) Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21 (De3) Plyss Expression_system_plasmid: Pet-23d Expression_system_gene: Ctnc(A-Cys)
method	Solution NMR
ligand	CA	enzyme
related structures	by homologous chain: 1BLQ, 1LXF
Gene Ontology	Chain Function Process Component A
Primary reference	Structure of cardiac muscle troponin C unexpectedly reveals a closed regulatory domain., Sia SK, Li MX, Spyracopoulos L, Gagne SM, Liu W, Putkey JA, Sykes BD, J Biol Chem 1997 Jul 18;272(29):18216-21. PMID:9218458

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (761 Kb) [Save to disk] Biological Unit Coordinates (2ctn.pdb1.gz) 25 Kb LPC: Ligand-Protein Contacts for 2CTN CSU: Contacts of Structural Units for 2CTN Original NMR restraints for 2CTN from PDB Retrieve 2CTN in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2CTN from S2C, [Save to disk]

View 2CTN 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 2CTN

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2CTN, from MSDmotif at EBI Genome occurence of 2CTN's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d2ctn__, region [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: [2ctn] [2ctn_A] SWISS-PROT database: [P09860] Domain organization of [TNNC1_CHICK] by SWISSPFAM Domain found in 2CTN: [EFh ] by SMART

Other resources with information on 2CTN

Community annotation for 2CTN at PDBWiki (http://pdbwiki.org) NMR Ensemble (OLDERADO: core, domain and representative structure database) MMDB (Entrez's Structure Database)

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