TRIM36 (tripartite motif-containing 36), also known as RNF98 (RING finger protein 98), HAPRIN (haploid germ cell-specific RBCC protein) or RBCC728, is a 728 amino acid protein that belongs to the TRIM/RBCC (Ring finger, B box, coiled-coil) family. Predominantly expressed in prostate, testis and brain with weak expression in heart, kidney and lung, TRIM36 contains two B box-type zinc fingers, a SPRY domain, a coiled-coil domain, a fibronectin type-III domain and a RING-type zinc finger; a motif that has zinc-chelating activity and is involved in mediating protein-protein and protein-DNA interactions. Localizing to the cytoplasm and the acrosomal region of germ cells and mature sperm, TRIM36 is believed to play a role in the acrosome reaction and fertilization. In addition, TRIM36 is overexpressed in prostate cancer, suggesting a possible role for TRIM36 in prostate tumorigenesis.
Function:
E3 ubiquitin-protein ligase which mediates ubiquitination and subsequent proteasomal degradation of target proteins. Involved in chromosome segregation and cell cycle regulation. May play a role in the acrosome reaction and fertilization (By similarity).
Subunit:
Interacts with CENPH (By similarity).
Subcellular Location:
Cytoplasm (By similarity). Cytoplasmic vesicle, secretory vesicle, acrosome (By similarity). Cytoplasm, cytoskeleton (By similarity). Note=Found in the acrosomal region of elongated spermatids and mature sperm (By similarity).
Tissue Specificity:
Highly expressed in testis, prostate and brain. Weakly expressed in kidney, lung and heart.
Similarity:
Belongs to the TRIM/RBCC family.
Contains 2 B box-type zinc fingers.
Contains 1 B30.2/SPRY domain.
Contains 1 COS domain.
Contains 1 fibronectin type-III domain.
Contains 1 RING-type zinc finger.
SWISS:
Q9NQ86
Gene ID:
55521
Database links:
Entrez Gene: 55521 Human
Entrez Gene: 28105 Mouse
GenBank: NM_018700 Human
GenBank: NM_178872 Mouse
Omim: 609317 Human
SwissProt: Q9NQ86 Human
SwissProt: Q80WG7 Mouse
Unigene: 519514 Human
Unigene: 638953 Human
Unigene: 277382 Mouse
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