1A26	Transferase	date	Jan 16, 1998
title	The Catalytic Fragment Of Poly(Adp-Ribose) Polymerase Comple Carba-Nad
authors	A.Ruf, G.E.Schulz
compound		source
Molecule: Poly (Adp-Ribose) Polymerase Chain: A Fragment: Catalytic Fragment Synonym: Parp-Cf, Poly(Adp-Ribose) Transferase, Poly (Adp-R Synthetase; Ec: 2.4.2.30 Engineered: Yes		Organism_scientific: Gallus Gallus Organism_common: Chicken Organism_taxid: 9031 Cell_line: Sf9 Organelle: Nucleus Expression_system: Spodoptera Frugiperda Expression_system_common: Fall Armyworm Expression_system_taxid: 7108 Expression_system_strain: Sf9 Expression_system_cell_line: Sf9 Expression_system_vector_type: Virus Expression_system_vector: Baculovirus Expression_system_plasmid: Pvlpe
symmetry	Space Group: P 21 21 21	R_factor 0.168 R_Free 0.236
crystal cell	length a length b length c angle alpha angle beta angle gamma 59.040 64.440 96.720 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.25 Å
ligand	CNA	enzyme	Transferase E.C.2.4.2.30 BRENDA
related structures	by homologous chain: 1EFY, 2PAW
Gene Ontology	Chain Function Process Component A
Primary reference	The mechanism of the elongation and branching reaction of poly(ADP-ribose) polymerase as derived from crystal structures and mutagenesis., Ruf A, Rolli V, de Murcia G, Schulz GE, J Mol Biol 1998 Apr 24;278(1):57-65. PMID:9571033

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (62 Kb) [Save to disk] Biological Unit Coordinates (1a26.pdb1.gz) 58 Kb LPC: Ligand-Protein Contacts for 1A26 CSU: Contacts of Structural Units for 1A26 Likely Quarternary Molecular Structure file(s) for 1A26 Structure Factors (153 Kb) Retrieve 1A26 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1A26 from S2C, [Save to disk] Re-refined 1a26 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1A26 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 1A26

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 1A26, from MSDmotif at EBI Genome occurence of 1A26's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1a26_1, region 662-796 [Jmol] [rasmolscript] [script source]     - Domain d1a26_2, region 797-1012 [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: [1a26] [1a26_A] SWISS-PROT database: [P26446] Domain organization of [PARP1_CHICK] by SWISSPFAM

Other resources with information on 1A26

Community annotation for 1A26 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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