3CPU
SUBSITE MAPPING OF THE ACTIVE SITE OF HUMAN PANCREATIC ALPHA-AMYLASE USING SUBSTRATES, THE PHARMACOLOGICAL INHIBITOR ACARBOSE, AND AN ACTIVE SITE VARIANT
- PDB DOI: https://doi.org/10.2210/pdb3CPU/pdb
- Classification: HYDROLASE
- Organism(s): Homo sapiens
- Expression System: Komagataella pastoris
- Mutation(s): Yes 
- Deposited: 1999-06-08 Released: 2001-06-30 
Experimental Data Snapshot
- Method: X-RAY DIFFRACTION
- Resolution: 2.00 Å
- R-Value Work: 0.179 
- R-Value Observed: 0.179 
wwPDB Validation   3D Report Full Report
This is version 3.2 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): 1  Gene Names: AMY2A 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
Small Molecules
Ligands 2 Unique | |||||
---|---|---|---|---|---|
ID | Chains | Name / Formula / InChI Key | 2D Diagram | 3D Interactions | |
CA Query on CA | C [auth A] | CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N | |||
CL Query on CL | D [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 |
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2 | |||||
---|---|---|---|---|---|
ID | Chains | Name | Type/Class | 2D Diagram | 3D Interactions |
PRD_900001 Query on PRD_900001 | B | alpha-maltose | Oligosaccharide / Nutrient |
Experimental Data & Validation
Experimental Data
- Method: X-RAY DIFFRACTION
- Resolution: 2.00 Å
- R-Value Work: 0.179 
- R-Value Observed: 0.179 
- Space Group: P 21 21 21
Unit Cell:
Length ( Å ) | Angle ( ˚ ) |
---|---|
a = 52.91 | α = 90 |
b = 75.39 | β = 90 |
c = 136.12 | γ = 90 |
Software Name | Purpose |
---|---|
X-PLOR | refinement |
Entry History 
Deposition Data
- Released Date: 2001-06-30  Deposition Author(s): Brayer, G.D., Sidhu, G., Maurus, R., Rydberg, E.H., Braun, C., Wang, Y., Nguyen, N.T., Overall, C.M., Withers, S.G.
Revision History (Full details and data files)
- Version 1.0: 2001-06-30
Type: Initial release - Version 1.1: 2008-04-26
Changes: Version format compliance - Version 1.2: 2011-07-13
Changes: Version format compliance - Version 2.0: 2019-12-25
Changes: Data collection, Database references, Derived calculations, Polymer sequence - Version 3.0: 2020-07-29
Type: Remediation
Reason: Carbohydrate remediation
Changes: Atomic model, Data collection, Derived calculations, Structure summary - Version 3.1: 2020-12-16
Changes: Database references, Derived calculations, Source and taxonomy, Structure summary - Version 3.2: 2023-12-27
Changes: Data collection, Database references