2XWK
SiaP R147A mutant in complex with Neu5Ac
- PDB DOI: https://doi.org/10.2210/pdb2XWK/pdb
- Classification: TRANSPORT PROTEIN
- Organism(s): Haemophilus influenzae
- Expression System: Escherichia coli BL21(DE3)
- Mutation(s): Yes 
- Deposited: 2010-11-04 Released: 2011-11-23 
Experimental Data Snapshot
- Method: X-RAY DIFFRACTION
- Resolution: 1.49 Å
- R-Value Free: 0.164 
- R-Value Work: 0.110 
- R-Value Observed: 0.112 
This is version 1.6 of the entry. See complete history. 
Macromolecules
Find similar proteins by:
(by identity cutoff) | 3D Structure
Entity ID: 1 | |||||
---|---|---|---|---|---|
Molecule | Chains | Sequence Length | Organism | Details | Image |
SIALIC ACID-BINDING PERIPLASMIC PROTEIN SIAP | 312 | Haemophilus influenzae | Mutation(s): 1  | ||
UniProt | |||||
Find proteins for P44542 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)) Explore P44542  Go to UniProtKB:  P44542 | |||||
Entity Groups   | |||||
Sequence Clusters | 30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity | ||||
UniProt Group | P44542 | ||||
Sequence AnnotationsExpand | |||||
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Small Molecules
Ligands 1 Unique | |||||
---|---|---|---|---|---|
ID | Chains | Name / Formula / InChI Key | 2D Diagram | 3D Interactions | |
SLB Query on SLB | B [auth A] | N-acetyl-beta-neuraminic acid C11 H19 N O9 SQVRNKJHWKZAKO-PFQGKNLYSA-N |
Experimental Data & Validation
Experimental Data
- Method: X-RAY DIFFRACTION
- Resolution: 1.49 Å
- R-Value Free: 0.164 
- R-Value Work: 0.110 
- R-Value Observed: 0.112 
- Space Group: P 21 21 21
Unit Cell:
Length ( Å ) | Angle ( ˚ ) |
---|---|
a = 47.75 | α = 90 |
b = 74.75 | β = 90 |
c = 87.07 | γ = 90 |
Software Name | Purpose |
---|---|
REFMAC | refinement |
MOSFLM | data reduction |
SCALEPACK | data scaling |
REFMAC | phasing |
Entry History 
Deposition Data
- Released Date: 2011-11-23  Deposition Author(s): Fischer, M., Hubbard, R.E.
Revision History (Full details and data files)
- Version 1.0: 2011-11-23
Type: Initial release - Version 1.1: 2015-09-16
Changes: Data collection, Database references - Version 1.2: 2015-09-23
Changes: Database references - Version 1.3: 2015-11-18
Changes: Database references - Version 1.4: 2019-03-06
Changes: Data collection, Experimental preparation, Other - Version 1.5: 2020-07-29
Type: Remediation
Reason: Carbohydrate remediation
Changes: Data collection, Derived calculations, Other, Structure summary - Version 1.6: 2023-12-20
Changes: Data collection, Database references, Refinement description, Structure summary