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Overview

Uniprot IDQ9UK85
Protein NameDickkopf-like protein 1
Gene NameDKKL1
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
229 HSRLSPRKTHLLYIL

Function

Involved in fertilization by facilitating sperm penetration of the zona pellucida. May promote spermatocyte apoptosis, thereby limiting sperm production. In adults, may reduce testosterone synthesis in Leydig cells. Is not essential either for development or fertility

Protein Sequence

10 MGEASPPAPA 20 RRHLLVLLLL 30 LSTLVIPSAA 40 APIHDADAQE 50 SSLGLTGLQS 60 LLQGFSRLFL 70 KGNLLRGIDS 80 LFSAPMDFRG 90 LPGNYHKEEN 100 QEHQLGNNTL 110 SSHLQIDKMT 120 DNKTGEVLIS 130 ENVVASIQPA 140 EGSFEGDLKV 150 PRMEEKEALV 160 PIQKATDSFH 170 TELHPRVAFW 180 IIKLPRRRSH 190 QDALEGGHWL 200 SEKRHRLQAI 210 RDGLRKGTHK 220 DVLEEGTESS 230 SHSRLSPRKT 240 HLLYILRPSR QL

Gene Ontology

Classification GO ID Description
Cellular Component GO:0001669 acrosomal vesicle
Cellular Component GO:0005615 extracellular space
Molecular Function GO:0039706 co-receptor binding
Molecular Function GO:0048019 receptor antagonist activity
Biological Process GO:0009653 anatomical structure morphogenesis
Biological Process GO:0090090 negative regulation of canonical Wnt signaling pathway
Biological Process GO:2000225 negative regulation of testosterone biosynthetic process
Biological Process GO:0007341 penetration of zona pellucida
Biological Process GO:0043065 positive regulation of apoptotic process

Reference

[1] Yan M, Tu H, Tang S, Gai Z, Shi Q et al.. Lactylated Proteomic Analysis Reveals Functional Implications of Lysine Lactylation In Asthenozoospermia.. Mol Cell Proteomics 24(12):101439. 2025 Dec. PMID: 41192556.