1B2Y
STRUCTURE OF HUMAN PANCREATIC ALPHA-AMYLASE IN COMPLEX WITH THE CARBOHYDRATE INHIBITOR ACARBOSE
- PDB DOI: https://doi.org/10.2210/pdb1B2Y/pdb
- Classification: HYDROLASE
- Organism(s): Homo sapiens
- Mutation(s): No 
- Deposited: 1998-12-03 Released: 2000-02-16 
Experimental Data Snapshot
- Method: X-RAY DIFFRACTION
- Resolution: 3.20 Å
- R-Value Free: 0.217 
- R-Value Work: 0.191 
- R-Value Observed: 0.191 
wwPDB Validation   3D Report Full Report
This is version 4.1 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 |
Pancreatic alpha-amylase | 496 | Homo sapiens | Mutation(s): 0  EC: 3.2.1.1 | ||
UniProt & NIH Common Fund Data Resources | |||||
Find proteins for P04746 (Homo sapiens) Explore P04746  Go to UniProtKB:  P04746 | |||||
PHAROS:  P04746 GTEx:  ENSG00000243480  | |||||
Entity Groups   | |||||
Sequence Clusters | 30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity | ||||
UniProt Group | P04746 | ||||
Sequence AnnotationsExpand | |||||
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Oligosaccharides
Entity ID: 2 | |||||
---|---|---|---|---|---|
Molecule | Chains | Length | 2D Diagram | Glycosylation | 3D Interactions |
alpha-D-quinovopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-4,6-dideoxy-4-{[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-en-1-yl]amino}-alpha-D-glucopyranose-(1-4)-beta-D-glucopyranose | B | 4 | N/A | N/A | |
Glycosylation Resources | |||||
GlyTouCan:  G42476FD GlyCosmos:  G42476FD |
Small Molecules
Ligands 2 Unique | |||||
---|---|---|---|---|---|
ID | Chains | Name / Formula / InChI Key | 2D Diagram | 3D Interactions | |
CA Query on CA | D [auth A] | CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N | |||
CL Query on CL | C [auth A] | CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M |
Modified Residues 1 Unique | |||||
---|---|---|---|---|---|
ID | Chains | Type | Formula | 2D Diagram | Parent |
PCA Query on PCA | A | L-PEPTIDE LINKING | C5 H7 N O3 | GLN |
Experimental Data & Validation
Experimental Data
- Method: X-RAY DIFFRACTION
- Resolution: 3.20 Å
- R-Value Free: 0.217 
- R-Value Work: 0.191 
- R-Value Observed: 0.191 
- Space Group: P 21 21 21
Unit Cell:
Length ( Å ) | Angle ( ˚ ) |
---|---|
a = 53.11 | α = 90 |
b = 75.1 | β = 90 |
c = 137.13 | γ = 90 |
Software Name | Purpose |
---|---|
DENZO | data reduction |
SCALEPACK | data scaling |
AMoRE | phasing |
X-PLOR | refinement |
Entry History 
Deposition Data
- Released Date: 2000-02-16  Deposition Author(s): Nahoum, V., Payan, F.
Revision History (Full details and data files)
- Version 1.0: 2000-02-16
Type: Initial release - Version 1.1: 2007-10-16
Changes: Version format compliance - Version 1.2: 2011-07-13
Changes: Version format compliance - Version 2.0: 2017-10-25
Changes: Atomic model, Structure summary - Version 3.0: 2020-07-29
Type: Remediation
Reason: Carbohydrate remediation
Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary - Version 4.0: 2023-02-22
Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Polymer sequence, Source and taxonomy, Structure summary - Version 4.1: 2023-09-20
Changes: Data collection, Refinement description