Biological Assembly 1  

 3D View: Structure

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 17482.79 
• Atom Count: 1208 
• Residue Count: 155 
• Unique protein chains: 1

1JL1

D10A E. coli ribonuclease HI

• DOI: 10.2210/pdb1JL1/pdb

• Classification: HYDROLASE
• Organism(s): Escherichia coli (strain K12)
• Expression System: Escherichia coli
• Mutation(s): 4 


• Deposited: 2001-07-13 Released: 2002-02-27 
• Deposition Author(s): Goedken, E.R., Marqusee, S.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.3 Å
• R-Value Free: 0.263 
• R-Value Work: 0.223 

Literature

Native-state energetics of a thermostabilized variant of ribonuclease HI.

Goedken, E.R., Marqusee, S.

(2001) J.Mol.Biol. 314: 863-871

• PubMed: 11734003 
• DOI: 10.1006/jmbi.2001.5184


• PubMed Abstract: 
  

Escherichia coli RNase HI is a well-characterized model system for protein folding and stability. Controlling protein stability is critical for both natural proteins and for the development of engineered proteins that function under extreme conditions. We have used native-state hydrogen exchange on a variant containing the stabilizing mutation Asp10 to alanine in order to determine its residue-specific stabilities. On average, the DeltaG(unf) value for each residue was increased by 2-3 kcal/mol, resulting in a lower relative population of partially unfolded forms. Though increased in stability by a uniform factor, D10A shows a distribution of stabilities in its secondary structural units that is similar to that of E. coli RNase H, but not the closely related protein from Thermus thermophilus. Hence, the simple mutation used to stabilize the enzyme does not recreate the balance of conformational flexibility evolved in the thermophilic protein.

---

Organizational Affiliation: 

Department of Molecular and Cell Biology, University of California, 229 Stanley Hall, Berkeley, CA 94720, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
RIBONUCLEASE HI	A	155	Escherichia coli (strain K12)	Mutation(s): 4  Gene Names: rnhA (dasF, herA, rnh, sdrA) EC: 3.1.26.4
Find proteins for P0A7Y4 (Escherichia coli (strain K12)) Go to UniProtKB:  P0A7Y4

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.3 Å
• R-Value Free: 0.263 
• R-Value Work: 0.223 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 37.016	α = 90.00
b = 40.874	β = 90.00
c = 85.305	γ = 90.00

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-07-13 
• Released Date: 2002-02-27 
• Deposition Author(s): Goedken, E.R., Marqusee, S.

Revision History 

• Version 1.0: 2002-02-27
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance