UniProt data
UniProt name: NPTN_HUMAN (Q9Y639)
Gene name: NPTN; Synonyms=SDFR1, SDR1
Organism: Homo sapiens (Human).
Function: Probable homophilic and heterophilic cell adhesion molecule involved in long term potentiation at hippocampal excitatory synapses through activation of p38MAPK. May also regulate neurite outgrowth by activating the FGFR1 signaling pathway. May play a role in synaptic plasticity (By similarity). {ECO:0000250}.
Subcellular location: Cell membrane {ECO:0000305}; Single-pass type I membrane protein {ECO:0000305}. Note=Enriched at postsynaptic density. {ECO:0000250}.
Transmembrane domains:
- 340-360, 21 AA, Helical. {ECO:0000255}.
Sequence: 398 AA
CATM prediction
The sequence of NPTN_HUMAN returned 1 potential models
The positions at the dimer's interface are highlighted in yellow. The position at the crossing point is highlighted in orange.
| # | Sequence and interface | d | θ | Z' | ω' | Score |
|---|---|---|---|---|---|---|
| 340 350 360 | + | + | |
(Å) | (°) | (Å) | (°) | ||
| Model 1 | LAALWAFLGILAEIIILVVIIVVYEKR | 7.3 | -46.0° | 3.6 | 37.0 | -13.1 |
| Prolines* | LAPLWPFLGILAEIIILVVIIVVYEKR |
* Note: this sequence contains Pro residues. CATM substituted them with Ala during the modeling. The positions are marked.
Click on the model number to visualize its details below.
MODEL 1 DETAILS
Precited structure:
Download model 1 structure: PDB, PyMOL session
List of hydrogen bonds:
| Donor | Acceptor | Distance |
|---|---|---|
| B, 342, ALA, HA | A, 341, TRP, O | 3.26Å |
| B, 345, GLY, HA1 | A, 342, ALA, O | 3.29Å |
| A, 342, ALA, HA | B, 341, TRP, O | 3.26Å |
| A, 345, GLY, HA1 | B, 342, ALA, O | 3.29Å |

