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Overview

Uniprot IDO75952
Protein NameCalcium-binding tyrosine phosphorylation-regulated protein
Gene NameCABYR
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
364 KKSVESVKLAQLEEN
373 AQLEENAKYSSVYME
5 ***MISSKPRLVVPY
84 QKKLECLKEPGKTSV

Function

May function as a regulator of both motility- and head-associated functions such as capacitation and the acrosome reaction. Isoform 1 binds calcium in vitro. Isoform 2 and isoform 6 probably bind calcium. Isoform 3 and isoform 5 do not bind calcium in vitro. Isoform 4 probably does not bind calcium

Protein Sequence

10 MISSKPRLVV 20 PYGLKTLLEG 30 ISRAVLKTNP 40 SNINQFAAAY 50 FQELTMYRGN 60 TTMDIKDLVK 70 QFHQIKVEKW 80 SEGTTPQKKL 90 ECLKEPGKTS 100 VESKVPTQME 110 KSTDTDEDNV 120 TRTEYSDKTT 130 QFPSVYAVPG 140 TEQTEAVGGL 150 SSKPATPKTT 160 TPPSSPPPTA 170 VSPEFAYVPA 180 DPAQLAAQML 190 GKVSSIHSDQ 200 SDVLMVDVAT 210 SMPVVIKEVP 220 SSEAAEDVMV 230 AAPLVCSGKV 240 LEVQVVNQTS 250 VHVDLGSQPK 260 ENEAEPSTAS 270 SVPLQDEQEP 280 PAYDQAPEVT 290 LQADIEVMST 300 VHISSVYNDV 310 PVTEGVVYIE 320 QLPEQIVIPF 330 TDQVACLKEN 340 EQSKENEQSP 350 RVSPKSVVEK 360 TTSGMSKKSV 370 ESVKLAQLEE 380 NAKYSSVYME 390 AEATALLSDT 400 SLKGQPEVPA 410 QLLDAEGAIK 420 IGSEKSLHLE 430 VEITSIVSDN 440 TGQEESGENS 450 VPQEMEGKPV 460 LSGEAAEAVH 470 SGTSVKSSSG 480 PFPPAPEGLT 490 APEIEPEGES TAE

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005737 cytoplasm
Cellular Component GO:0005856 cytoskeleton
Cellular Component GO:0005829 cytosol
Cellular Component GO:0005576 extracellular region
Cellular Component GO:0031514 motile cilium
Cellular Component GO:0005654 nucleoplasm
Cellular Component GO:0005634 nucleus
Cellular Component GO:0097229 sperm end piece
Cellular Component GO:0035686 sperm fibrous sheath
Cellular Component GO:0097228 sperm principal piece
Molecular Function GO:0005509 calcium ion binding
Molecular Function GO:0019899 enzyme binding
Molecular Function GO:0017124 SH3 domain binding
Biological Process GO:0003351 epithelial cilium movement involved in extracellular fluid movement
Biological Process GO:0048240 sperm capacitation

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.