P54921: Alpha-soluble NSF attachment protein (Napa)

Alpha-soluble NSF attachment protein (Napa) is a 295-residue protein from Rattus norvegicus. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: P54921.

Gene
Napa
Organism
Rattus norvegicus
Length
295 residues
Mean pLDDT
87.5
Model
AF-P54921-F1 v6
Model created
1 Aug 2025
PDB structures
22

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Model confidence (pLDDT)

The mean pLDDT of this model is 87.5 (confident overall). pLDDT is AlphaFold's per-residue confidence score from 0 to 100. In MolViewer, choose the B-factor color scheme to color the model by pLDDT, because AlphaFold stores it in the B-factor column.

pLDDT bandMeaningShare of residues
Above 90Very high: backbone and side chains are usually accurate51%
70 to 90Confident: backbone generally right42%
50 to 70Low: treat with caution5%
Below 50Very low: often disordered regions2%

What pLDDT means and how to read it

Function

Required for vesicular transport between the endoplasmic reticulum and the Golgi apparatus. Together with GNA12 promotes CDH5 localization to plasma membrane

Subunit structure

Interacts with PRKCABP, and disrupts the interaction between GRIA2 and PRKCABP, leading to the internalization of GRIA2 (PubMed:11931741). Found in a complex with VAMP8 (PubMed:9614193). Component of a SNARE-like complex that contains at least ZW10, USE1L, RINT1, STX18 and NAPA/SNAP-alpha (By similarity). Interacts with VTI1A (By similarity). Interacts with STX12 (PubMed:9507000). Interacts with…

Subcellular location

Cell membrane

Experimental structures in the PDB

Compare the prediction with experimentally determined structures of the same protein:

PDB IDMethodResolutionChains and residues
9PFFEM3.09 ÅL/M/N/O=1-295
9OJZEM3.39 ÅJ/K/L=1-295
9PB9EM3.45 ÅJ/K/L=1-295
9PBAEM3.47 ÅJ/K/L=1-295
9OLOEM3.56 ÅK/L/M/N=1-295
9PFGEM3.58 ÅE/F/G/H=1-295
9PAGEM3.62 ÅJ/K/L=1-295
9PCZEM3.65 ÅM/N/O/P=1-295
9PC3EM3.69 ÅJ/K/L=1-295
9OK3EM3.74 ÅF/G/H=1-295
9PAFEM3.82 ÅJ/K/L=1-295
9PBVEM3.91 ÅI/J/K=1-295
9PBFEM4.01 ÅJ/K/L=1-295
9OM6EM4.14 ÅE/F/G/H=1-295
9PDDEM4.16 ÅI/J/K/L=1-295
6MDMEM4.4 ÅK/L=1-295
6MDNEM4.4 ÅK/L=1-278
9PD1EM4.5 ÅK/L/M/N=1-295
3J96EM7.6 ÅG/H/I/J=1-295
3J97EM7.8 ÅG/H/I/J=1-295

Showing 20 of 22 experimental structures (best resolution first).

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