2HIK	Replication	date	Jun 29, 2006
title	Heterotrimeric Pcna Sliding Clamp
authors	J.M.Pascal, O.V.Tsodikov, T.Ellenberger
compound		source
Molecule: Pcna1 (Sso0397) Chain: A, L, X Synonym: Dna Polymerase Sliding Clamp B, Proliferating Cell Antigen Homolog B, Pcna B; Engineered: Yes		Organism_scientific: Sulfolobus Solfataricus Organism_taxid: 2287 Gene: Pcnb, Pcna-2 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3)Ril Expression_system_vector_type: Pet 24
Molecule: Pcna2 (Sso1047) Chain: B, M, Y Synonym: Dna Polymerase Sliding Clamp C, Proliferating Cell Antigen Homolog C, Pcna C; Engineered: Yes		Organism_scientific: Sulfolobus Solfataricus Organism_taxid: 2287 Gene: Pcnc, Pcna-2 Expression_system: Escherichia Coli Expression_system_taxid: 562
Molecule: Pcna3 (Sso0405) Chain: C, N, Z Synonym: Dna Polymerase Sliding Clamp A, Proliferating Cell Antigen Homolog A, Pcna A; Engineered: Yes		Organism_scientific: Sulfolobus Solfataricus Organism_taxid: 2287 Gene: Pcna, Pcna-1 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: P 21 21 2	R_factor 0.236 R_Free 0.299
crystal cell	length a length b length c angle alpha angle beta angle gamma 142.275 223.093 79.140 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	3.30 Å
ligand	MSE	enzyme
Gene Ontology	Chain Function Process Component A, X, L N, Y, B, Z, M, C
Primary reference	A flexible interface between DNA ligase and PCNA supports conformational switching and efficient ligation of DNA., Pascal JM, Tsodikov OV, Hura GL, Song W, Cotner EA, Classen S, Tomkinson AE, Tainer JA, Ellenberger T, Mol Cell. 2006 Oct 20;24(2):279-91. PMID:17052461

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (350 Kb) [Save to disk] Biological Unit Coordinates (2hik.pdb1.gz) 118 Kb Biological Unit Coordinates (2hik.pdb2.gz) 117 Kb Biological Unit Coordinates (2hik.pdb3.gz) 118 Kb LPC: Ligand-Protein Contacts for 2HIK CSU: Contacts of Structural Units for 2HIK Likely Quarternary Molecular Structure file(s) for 2HIK Structure Factors (329 Kb) Retrieve 2HIK in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2HIK from S2C, [Save to disk] Re-refined 2hik structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2HIK 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 2HIK

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 2HIK, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2hik_Y] [2hik_Z] [2hik_N] [2hik_M] [2hik_B] [2hik_L] [2hik_A] [2hik_X] [2hik_C] [2hik] SWISS-PROT database: [P57765] [P57766] [Q97Z84] Domain organization of [PCNA1_SULSO] [PCNA2_SULSO] [PCNA3_SULSO] by SWISSPFAM

Other resources with information on 2HIK

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

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Images from IMB Jena Image Library of Biological Macromolecules.

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