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Target intelligence / Profile preview
Golgi-associated RAB2 interactor family member 5B (GARIN5B)
- Target
- GARIN5B
- Molecular classification
- Other (not a receptor, enzyme, transporter, ion channel; it is a Golgi-associated protein with RAB2-binding properties)
01
Overview
Golgi-associated RAB2 interactor family member 5B (GARIN5B) is a Golgi-associated protein primarily expressed in testes, where it plays an essential role in the morphogenesis of the sperm head during spermiogenesis. The protein contains a RAB2-binding domain, conferring affinity for the small GTPases RAB2A and RAB2B, which mediate Golgi-to-acrosome trafficking processes. Knockout mouse models show that GARIN5B is indispensable for sperm morphological integrity and, when deleted, lead to subfertility due to aberrant sperm development. Its close paralogs include GARIN3, and the GARIN protein family as a whole is conserved in humans and mice. Currently, GARIN5B is not a recognized therapeutic target in clinical medicine, nor are there any drugs or established biomarkers related to its activity.
- Other names
- GARIN5BC19orf16FAM71E2family with sequence similarity 71 member E2DKFZp434G1729protein FAM71E2putative protein FAM71E2
02
Mechanism of action
None known (no drugs or small molecules targeting GARIN5B have been identified)
03
Biological functions
Cell morphogenesisSpermiogenesisSperm head developmentMembrane protein traffickingVesicle anchoring and processing
04
Disease associations
Male infertility and subfertility (mouse data)(Predicted, limited evidence) Cardiofaciocutaneous syndrome (database association, though biological connection is not established)
05
Safety considerations
None documented; insufficient data on therapeutic intervention
06
Interacting drugs
None known
07
Biomarkers
None established for patient selection or monitoring
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