8U3G

Structure of NAAG-bound Sialin

• PDB DOI: https://doi.org/10.2210/pdb8U3G/pdb
• EM Map EMD-41861: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  PDBTM


• Deposited: 2023-09-07 Released: 2024-05-29 
• Deposition Author(s): Schmiege, P., Li, X.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD), Welch Foundation

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.42 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structure of NAAG-bound Sialin

Schmiege, P., Li, X.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 56.01 kDa 
• Atom Count: 3,359 
• Modelled Residue Count: 427 
• Deposited Residue Count: 503 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sialin	A	503	Homo sapiens	Mutation(s): 0  Gene Names: SLC17A5 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NRA2 (Homo sapiens) Explore Q9NRA2  Go to UniProtKB:  Q9NRA2
GTEx:  ENSG00000119899

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GLU (Subject of Investigation/LOI)	D [auth A]	GLUTAMIC ACID C5 H9 N O4 WHUUTDBJXJRKMK-VKHMYHEASA-N
ASP (Subject of Investigation/LOI)	C [auth A]	ASPARTIC ACID C4 H7 N O4 CKLJMWTZIZZHCS-REOHCLBHSA-N
ACE (Subject of Investigation/LOI)	B [auth A]	ACETYL GROUP C2 H4 O IKHGUXGNUITLKF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.42 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.20.1-4487
MODEL REFINEMENT	ISOLDE	1.6.0

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-05-29 
Deposition Author(s): Schmiege, P., Li, X.

---

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	135343
National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD)	United States	110229
Welch Foundation	United States	I-1957

Revision History  

• Version 1.0: 2024-05-29
  Type: Initial release