Research Article
Construction and Analysis of the Cell Surface’s Protein Network for Human Sperm-Egg Interaction
Table 2
The names of proteins and their respective classes in the three clusters.
| Clusters | Names of proteins | Protein class |
| Cluster 1 (red in Figure 4) | CXL16 | Type I membrane protein | CASR, CCR1, GPER, P2Y13, CCR3 | Multipass membrane protein |
| Cluster 2 (yellow in Figure 4) | SNP23 | Soluble, nonsecreted protein | STX1A, VAMP2, VAMP8, VAPB | Type II membrane protein |
| Cluster 3 (green in Figure 4) | CLGN, ZP3, IZUMO1 | Type I membrane protein | ADAM2, CD9 | Multipass membrane protein |
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