2A1S	Hydrolase	date	Jun 21, 2005
title	Crystal Structure Of Native Parn Nuclease Domain
authors	M.Wu, H.Song
compound		source
Molecule: Poly(A)-Specific Ribonuclease Parn Chain: A, B, C, D Fragment: Parn(1-430) Synonym: Polyadenylate-Specific Ribonuclease, Deadenylating Deadenylation Nuclease, Parn, Poly(A) Specific Nuclease; Ec: 3.1.13.4 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl_21 Star Expression_system_vector_type: Plasmid Expression_system_plasmid: Pgex-6p-1
symmetry	Space Group: C 1 2 1	R_factor 0.219 R_Free 0.254
crystal cell	length a length b length c angle alpha angle beta angle gamma 205.540 123.016 82.844 90.00 112.59 90.00
method	X-Ray Diffraction	resolution	2.60 Å
ligand		enzyme	Hydrolase E.C.3.1.13.4 BRENDA
note	2A1S (Molecule of the Month:pdb86)
Gene Ontology	Chain Function Process Component A, D, C, B
Primary reference	Structural insight into poly(A) binding and catalytic mechanism of human PARN., Wu M, Reuter M, Lilie H, Liu Y, Wahle E, Song H, EMBO J 2005 Dec 7;24(23):4082-93. Epub 2005 Nov 10. PMID:16281054

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (264 Kb) [Save to disk] Biological Unit Coordinates (2a1s.pdb1.gz) 131 Kb Biological Unit Coordinates (2a1s.pdb2.gz) 130 Kb CSU: Contacts of Structural Units for 2A1S Likely Quarternary Molecular Structure file(s) for 2A1S Structure Factors (440 Kb) Retrieve 2A1S in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2A1S from S2C, [Save to disk] Re-refined 2a1s structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2A1S 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 2A1S

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 2A1S, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2a1s_D] [2a1s_B] [2a1s] [2a1s_A] [2a1s_C] SWISS-PROT database: [O95453] Domain organization of [PARN_HUMAN] by SWISSPFAM

Other resources with information on 2A1S

Community annotation for 2A1S at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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