9XVV | pdb_00009xvv

Maltoheptaose-bound Arabidopsis ISA2-ISA1-ISA1 heterotrimer

PDB DOI: https://doi.org/10.2210/pdb9XVV/pdb
EM Map EMD-67303: EMDB EMDataResource

Classification: PLANT PROTEIN
Organism(s): Arabidopsis thaliana
Expression System: Homo sapiens
Mutation(s): No

Deposited: 2025-11-27 Released: 2026-04-08
Deposition Author(s): Wang, R.Y., Lin, H.J., Fan, M.R.
Funding Organization(s): Chinese Academy of Sciences

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.49 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

Validation slider image for 9XVV

This is version 1.0 of the entry. See complete history.

Literature

Arabidopsis ISA2-ISA1-ISA1 heterotrimer

Wang, R.Y., Lin, H.J., Fan, M.R.

To be published.

Macromolecule Content

Total Structure Weight: 273.35 kDa
Atom Count: 16,763
Modeled Residue Count: 2,076
Deposited Residue Count: 2,398
Unique protein chains: 2

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Isoamylase 1, chloroplastic	A, C [auth B]	764	Arabidopsis thaliana	Mutation(s): 0 Gene Names: ISA1, RGV3, At2g39930, T28M21.9 EC: 3.2.1.68
UniProt
Find proteins for O04196 (Arabidopsis thaliana) Explore O04196 Go to UniProtKB: O04196
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	O04196
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Isoamylase 2, chloroplastic	B [auth C]	870	Arabidopsis thaliana	Mutation(s): 0 Gene Names: ISA2, DBE1, At1g03310, F15K9.9
UniProt
Find proteins for Q8L735 (Arabidopsis thaliana) Explore Q8L735 Go to UniProtKB: Q8L735
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q8L735
Sequence Annotations Expand
Reference Sequence

Oligosaccharides

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	D [auth F]	7		N/A	Interactions Focus chain D [auth F] Interactions & Density Focus chain D [auth F]
Glycosylation Resources
GlyTouCan: G41288IQ GlyCosmos: G41288IQ GlyGen: G41288IQ

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 2.49 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	cryoSPARC

Structure Validation

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View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2026-04-08

Deposition Author(s):

Funding Organization	Location	Grant Number
Chinese Academy of Sciences	China	XDB0630101

Revision History (Full details and data files)

Version 1.0: 2026-04-08
Type: Initial release

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.