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5F4E

Crystal structure of the human sperm Izumo1 and egg Juno complex

Functional Information from GO Data
ChainGOidnamespacecontents
A0005102molecular_functionsignaling receptor binding
A0007342biological_processfusion of sperm to egg plasma membrane involved in single fertilization
A0016020cellular_componentmembrane
A0035036biological_processsperm-egg recognition
B0005102molecular_functionsignaling receptor binding
B0005515molecular_functionprotein binding
B0005542molecular_functionfolic acid binding
B0005576cellular_componentextracellular region
B0005886cellular_componentplasma membrane
B0007155biological_processcell adhesion
B0007338biological_processsingle fertilization
B0007342biological_processfusion of sperm to egg plasma membrane involved in single fertilization
B0009897cellular_componentexternal side of plasma membrane
B0016020cellular_componentmembrane
B0031528cellular_componentmicrovillus membrane
B0035036biological_processsperm-egg recognition
B0038023molecular_functionsignaling receptor activity
B0042995cellular_componentcell projection
B0098552cellular_componentside of membrane
Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues84
DetailsDomain: {"description":"Ig-like C2-type","evidences":[{"source":"PROSITE-ProRule","id":"PRU00114","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues12
DetailsRegion: {"description":"Important for interaction with IZUMO1R","evidences":[{"source":"PubMed","id":"27309818","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues19
DetailsRegion: {"description":"Important for interaction with IZUMO1","evidences":[{"source":"PubMed","id":"27309808","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"27309818","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues1
DetailsLipidation: {"description":"GPI-anchor amidated serine","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

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PDB entries from 2025-07-23

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