1KH2	Ligase	date	Nov 29, 2001
title	Crystal Structure Of Thermus Thermophilus Hb8 Argininosuccin Synthetase In Complex With Atp
authors	M.Goto, Y.Nakajima, K.Hirotsu, Riken Structural Genomicsproteo Initiative (Rsgi)
compound		source
Molecule: Argininosuccinate Synthetase Chain: A, B, C, D Ec: 6.3.4.5 Engineered: Yes		Organism_scientific: Thermus Thermophilus Organism_taxid: 274 Gene: Hb8 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet11a
symmetry	Space Group: H 3	R_factor 0.209 R_Free 0.241
crystal cell	length a length b length c angle alpha angle beta angle gamma 228.910 228.910 161.680 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	ATP	enzyme	Ligase E.C.6.3.4.5 BRENDA
related structures	by homologous chain: 1KH1
Gene Ontology	Chain Function Process Component A, D, C, B
Primary reference	Crystal structure of argininosuccinate synthetase from Thermus thermophilus HB8. Structural basis for the catalytic action., Goto M, Nakajima Y, Hirotsu K, J Biol Chem 2002 May 3;277(18):15890-6. PMID:11844799

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (260 Kb) [Save to disk] Biological Unit Coordinates (1kh2.pdb1.gz) 254 Kb LPC: Ligand-Protein Contacts for 1KH2 CSU: Contacts of Structural Units for 1KH2 Likely Quarternary Molecular Structure file(s) for 1KH2 Structure Factors (1233 Kb) Retrieve 1KH2 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1KH2 from S2C, [Save to disk] Re-refined 1kh2 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1KH2 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 1KH2

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 1KH2, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1kh2a1, region A:1-165 [Jmol] [rasmolscript] [script source]     - Domain d1kh2a2, region A:171-395 [Jmol] [rasmolscript] [script source]     - Domain d1kh2b1, region B:1-165 [Jmol] [rasmolscript] [script source]     - Domain d1kh2b2, region B:171-395 [Jmol] [rasmolscript] [script source]     - Domain d1kh2c1, region C:1-165 [Jmol] [rasmolscript] [script source]     - Domain d1kh2c2, region C:171-395 [Jmol] [rasmolscript] [script source]     - Domain d1kh2d1, region D:1-165 [Jmol] [rasmolscript] [script source]     - Domain d1kh2d2, region D:171-395 [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1kh2_B] [1kh2_A] [1kh2_C] [1kh2] [1kh2_D] SWISS-PROT database: [P59846] Domain organization of [ASSY_THET8] by SWISSPFAM

Other resources with information on 1KH2

Community annotation for 1KH2 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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