1HUE

HISTONE-LIKE PROTEIN

PDB DOI: 10.2210/pdb1HUE/pdb
BMRB: 4047

Classification: DNA-BINDING
Organism(s): Geobacillus stearothermophilus
Mutation(s): No

Deposited: 1995-05-26 Released: 1995-10-15
Deposition Author(s): Vis, H., Mariani, M., Vorgias, C.E., Wilson, K.S., Kaptein, R., Boelens, R.

Experimental Data Snapshot

Method: SOLUTION NMR
Conformers Submitted: 25

wwPDB Validation 3D Report Full Report

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

Literature

Solution structure of the HU protein from Bacillus stearothermophilus.

Vis, H., Mariani, M., Vorgias, C.E., Wilson, K.S., Kaptein, R., Boelens, R.

(1995) J Mol Biol 254: 692-703

PubMed: 7500343 Search on PubMed
DOI: 10.1006/jmbi.1995.0648
Primary Citation of Related Structures:
1HUE

PubMed Abstract:

The histone-like protein HU from Bacillus stearothermophilus is a dimer with a molecular mass of 19.5 kDa that is capable of bending DNA. An X-ray structure has been determined, but no structure could be established for a large part of the supposed DNA-binding beta-arms. Using distance and dihedral constraints derived from triple-resonance NMR data of a 13C/15N doubly-labelled HU protein 49 distance geometry structures were calculated, which were refined by means of restrained Molecular Dynamics. From this set a total of 25 refined structures were selected having low constraint energy and few constraint violations. The ensemble of 25 structures display a root-mea-square co-ordinate deviation of 0.36 A with respect to the average structure, calculated over the backbone heavy atoms of residues 2 to 54 and 75 to 90 (and residues 2' to 54' and 75' to 90' of the second monomer). The structure of the core is very similar to that observed in the X-ray structure, with a pairwise r.m.s.d. of 1.06 A. The structure of the beta-hairpin arm contains a double flip-over at the prolines in the two strands of the beta-arm. Strong 15N-NH heteronuclear nuclear Overhauser effects indicate that the beta-arm and especially the tip is flexible. This explains the disorder observed in the solution and X-ray structures of the beta-arm, in respect of the core of the protein. Overlayed onto itself the beta-arm is better defined, with an r.m.s.d. of 1.0 A calculated over the backbone heavy atoms of residues 54 to 59 and 69 to 74. The tip of the arm adopts a well-defined 4:6 beta-hairpin conformation similar to the iron co-ordinating beta-arms of rubredoxin.

Related Citations:

1H,13C and 15N Resonance Assignments and Secondary Structure Analysis of the Hu Protein from Bacillus Stearothermophilus Using Two-and Three-Dimensional Double-and Triple-Resonance Heteronuclear Magnetic Resonance Spectroscopy
Vis, H., Boelens, R., Mariani, M., Stroop, R., Vorgias, C.E., Wilson, K.S., Kaptein, R.
(1994) Biochemistry 33: 14858

Organizational Affiliation:

Bijvoet Center for Biomolecular Research Utrecht University, The Netherlands.

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HU PROTEIN	A, B	90	Geobacillus stearothermophilus	Mutation(s): 0 Gene Names: hup, hbs, hbsU
UniProt
Find proteins for P0A3H0 (Geobacillus stearothermophilus) Explore P0A3H0 Go to UniProtKB: P0A3H0
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P0A3H0
Protein Feature View Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: SOLUTION NMR
Conformers Submitted: 25
OLDERADO: 1HUE Olderado

Structure Validation

View Full Validation Report

Entry History

Deposition Data

Deposited Date: 1995-05-26
Released Date: 1995-10-15

Deposition Author(s):

Revision History (Full details and data files)

Version 1.0: 1995-10-15
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: 2022-02-23
Changes: Database references, Derived calculations, Other