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Overview

Uniprot IDP32067
Protein NameLupus La protein homolog
Gene NameSsb
OrganismMus musculus

Kla Sites from experimental identification

Position Flanking peptide
340 GHAGGRFKGSHVFTA

Function

Binds to the 3' poly(U) terminus of nascent RNA polymerase III transcripts, protecting them from exonuclease digestion and facilitating their folding and maturation

Protein Sequence

10 MAENGDNEKM 20 TALEAKICHQ 30 IEYYFGDFNL 40 PRDKFLKEQI 50 KLDEGWVPLE 60 TMIKFNRLNR 70 LTTDFNVIVQ 80 ALSKSKAKLM 90 EVSADKTKIR 100 RSPSRPLPEV 110 TDEYKNDVKN 120 RSVYIKGFPT 130 DATLDDIKEW 140 LDDKGQILNI 150 QMRRTLHKTF 160 KGSIFAVFDS 170 IQSAKKFVEI 180 PGQKYKDTNL 190 LILFKEDYFA 200 KKNEERKQSK 210 VEAKLKAKQE 220 HEGRHKPGST 230 ETRALEGKMG 240 CLLKFSGDLD 250 DQTCREDLHF 260 LFSNHGEIKW 270 VDFARGAKEG 280 IILFKEKAKE 290 ALEKARNANN 300 GNLLLRNKKV 310 TWKVLEGHAE 320 KEALKKITDD 330 QQESLNKWKS 340 KGGHAGGRFK 350 GSHVFTAARR 360 FKGKGKGNRP 370 GYAGAPKGRG 380 QFHGRRTRFD 390 DDDRRRGPMK 400 RGRDGRDREE 410 PASKHKKREN GARDK

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005737 cytoplasm
Cellular Component GO:0010494 cytoplasmic stress granule
Cellular Component GO:0005829 cytosol
Cellular Component GO:0005634 nucleus
Cellular Component GO:1990904 ribonucleoprotein complex
Molecular Function GO:0003729 mRNA binding
Molecular Function GO:0008266 poly(U) RNA binding
Molecular Function GO:0003723 RNA binding
Molecular Function GO:1990825 sequence-specific mRNA binding
Molecular Function GO:0000049 tRNA binding
Biological Process GO:0075522 IRES-dependent viral translational initiation
Biological Process GO:0071045 nuclear histone mRNA catabolic process
Biological Process GO:0045727 positive regulation of translation
Biological Process GO:1903608 protein localization to cytoplasmic stress granule
Biological Process GO:0042780 tRNA 3'-end processing
Biological Process GO:0001682 tRNA 5'-leader removal
Biological Process GO:0006409 tRNA export from nucleus
Biological Process GO:0008033 tRNA processing

Reference

[1] Wu D, Tang Y, Li X, Xiong S, Zhang Z et al.. Characterization of protein lactylation in healthy and ischemic mouse hearts.. Front Cardiovasc Med 12:1644886. 2025. PMID: 41089239.