ID Q3V2A7; PN Glutamine-rich protein 2; GN Qrich2; OS 10090; SL Nucleus Position: SL-0178; SL Nucleus Position: SL-0182; SL Comments: Nucleus membrane {ECO:0000269|PubMed:30683861}. Nucleus {ECO:0000269|PubMed:30683861}. Cytoplasm {ECO:0000269|PubMed:30683861}. Cell projection, cilium, flagellum {ECO:0000269|PubMed:30683861}. Note=Localization varies during spermatozoa development. The protein is distributed in the nuclear membrane of the spermatogonia, in the nucleus of round spermatids, in the nucleus and cytoplasm of early elongating spermatids, in the cytoplasm of late elongating spermatids, and in the flagella of epididymal spermatozoa. {ECO:0000269|PubMed:30683861}. DR UNIPROT: Q3V2A7; DR UNIPROT: B9EKM0; DR Pfam: PF16043; DE Function: Has an essential role in the formation of sperm flagella and flagellar structure maintainance. It acts as a suppressor of ubiquitination and degradation of proteins involved in flagellar development and motility. {ECO:0000269|PubMed:30683861}. DE Reference Proteome: Yes; GO GO:0005737; GO GO:0031965; GO GO:0005634; GO GO:0036126; GO GO:0030031; GO GO:0030317; GO GO:2000059; TP Membrane Topology: Unknown; Source: UniProt - Sequence Analysis; SQ MENSVSEASLYLQDQLDKLRTIIESMLGSSSTLLSMSITPHKSTACLVPGQIDPEATCPACSLDVSHQVSLLVQRYEQLQ SQ DMVSGLAASRPSKKAKLQGQDEELLGHVQSAILQVQGDCEKLNITTSNLIEDHRQKQKDIEVLYQGIERLDKEKANREHL SQ EMEIDEKADKSALASKVSRIQFDATTEQLNHMMQELVAKMSGQEQDWQKLLDKLLAEMDSKLDRLELDPLKQMLEDRWKS SQ LRQQLKERPPLYQADEAAAMRRQLLAHFHCLSCDRPLETTVTGQVISVTPIISSMPGHRSVRPYTVFELEQIRQQSRNLK SQ LGSSFPRVDMSQMERSVGRLHSMHSRMLMDMEKVQVHFGGSVKASSQMIRELLHTQCLSHPCYKRGADTADYSYSTVSRR SQ CGGSHTLTYPYRRNRPQHLSPLEEIQIAMKHDEVDILGLDGHIYKGRMDTRLPGILGKDAPGVTKHNKAKLQQLQQLQQL SQ QQLQQLQQLQQAQHARPHAHRQPSLGNMISPPSRPQSAQMIADSKAVPSGQKKDRPVSSEGRLLQSNVSHSSIPTDIASL SQ QGSQQGLNMHIDVPPGEGLEEPTRGPRSTAAH //