1THF

CYCLASE SUBUNIT OF IMIDAZOLEGLYCEROLPHOSPHATE SYNTHASE FROM THERMOTOGA MARITIMA

PDB DOI: https://doi.org/10.2210/pdb1THF/pdb

Classification: LYASE
Organism(s): Thermotoga maritima
Expression System: Escherichia coli
Mutation(s): No

Deposited: 1998-09-17 Released: 2000-07-14
Deposition Author(s): Lang, D.A., Wilmanns, M.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.45 Å
R-Value Free: 0.214
R-Value Work: 0.178
R-Value Observed: 0.198

wwPDB Validation 3D Report Full Report

This is version 1.3 of the entry. See complete history.

Literature

Structural evidence for evolution of the beta/alpha barrel scaffold by gene duplication and fusion.

Lang, D.A., Obmolova, G., Thoma, R., Kirschner, K., Sterner, R., Wilmanns, M.

(2000) Science 289: 1546-1550

PubMed: 10968789 Search on PubMed
DOI: https://doi.org/10.1126/science.289.5484.1546
Primary Citation of Related Structures:
1QO2, 1THF

PubMed Abstract:
The atomic structures of two proteins in the histidine biosynthesis pathway consist of beta/alpha barrels with a twofold repeat pattern. It is likely that these proteins evolved by twofold gene duplication and gene fusion from a common half-barrel ancestor. These ancestral domains are not visible as independent domains in the extant proteins but can be inferred from a combination of sequence and structural analysis. The detection of subdomain structures may be useful in efforts to search genome sequences for functionally and structurally related proteins.

Organizational Affiliation

European Molecular Biology Laboratory (EMBL) Hamburg Outstation, EMBL c/o Deutsches Elektronen- Synchrotron (DESY), Notkestrasse 85, D-22603 Hamburg, Germany.

Macromolecule Content

Total Structure Weight: 27.93 kDa
Atom Count: 2,274
Modelled Residue Count: 253
Deposited Residue Count: 253
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HISF PROTEIN	A [auth D]	253	Thermotoga maritima	Mutation(s): 0 EC: 4.3.2.10
UniProt
Find proteins for Q9X0C6 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8)) Explore Q9X0C6 Go to UniProtKB: Q9X0C6
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q9X0C6
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
PO4 Query on PO4 Download Ideal Coordinates CCD File SDF format, chain B [auth D] SDF format, chain C [auth D] MOL2 format, chain B [auth D] MOL2 format, chain C [auth D] mmCIF format, chain B [auth D] mmCIF format, chain C [auth D]	B [auth D], C [auth D]	PHOSPHATE ION O₄ P NBIIXXVUZAFLBC-UHFFFAOYSA-K		Interactions Focus chain B [auth D] Focus chain C [auth D]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.45 Å
R-Value Free: 0.214
R-Value Work: 0.178
R-Value Observed: 0.198
Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 79.68	α = 90
b = 44.42	β = 112.01
c = 63.91	γ = 90

Software Package:

Software Name	Purpose
SHARP	phasing
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

View Full Validation Report

Entry History

Deposition Data

Released Date: 2000-07-14

Deposition Author(s):

Lang, D.A.

Wilmanns, M.

Revision History (Full details and data files)

Version 1.0: 2000-07-14
Type: Initial release
Version 1.1: 2008-03-24
Changes: Version format compliance
Version 1.2: 2011-07-13
Changes: Version format compliance
Version 1.3: 2024-02-14
Changes: Data collection, Database references, Derived calculations