ID   CD1B2_CAVPO             Reviewed;         332 AA.
AC   Q9QZZ1;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2000, sequence version 1.
DT   03-AUG-2022, entry version 101.
DE   RecName: Full=T-cell surface glycoprotein CD1b2;
DE   AltName: CD_antigen=CD1b-2;
DE   Flags: Precursor;
GN   Name=CD1B2;
OS   Cavia porcellus (Guinea pig).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Euarchontoglires; Glires; Rodentia; Hystricomorpha; Caviidae;
OC   Cavia.
OX   NCBI_TaxID=10141;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   STRAIN=Hartley, and NIH 2; TISSUE=Thymus;
RX   PubMed=10553074;
RA   Dascher C.C., Hiromatsu K., Naylor J.W., Brauer P.P., Brown K.A.,
RA   Storey J.R., Behar S.M., Kawasaki E.S., Porcelli S.A., Brenner M.B.,
RA   LeClair K.P.;
RT   "Conservation of a CD1 multigene family in the guinea pig.";
RL   J. Immunol. 163:5478-5488(1999).
CC   -!- FUNCTION: Antigen-presenting protein that binds self and non-self lipid
CC       and glycolipid antigens and presents them to T-cell receptors on
CC       natural killer T-cells. {ECO:0000250}.
CC   -!- SUBUNIT: Heterodimer with B2M (beta-2-microglobulin). Interacts with
CC       saposin C (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000250}; Single-pass type I
CC       membrane protein {ECO:0000250}. Endosome membrane {ECO:0000250}.
CC       Lysosome membrane {ECO:0000250}. Note=Subject to intracellular
CC       trafficking between the cell membrane, endosomes and lysosomes.
CC       Localizes to cell surface lipid rafts (By similarity). {ECO:0000250}.
CC   -!- MISCELLANEOUS: During protein synthesis and maturation, CD1 family
CC       members bind endogenous lipids that are replaced by lipid or glycolipid
CC       antigens when the proteins are internalized and pass through endosomes
CC       or lysosomes, before trafficking back to the cell surface. Interaction
CC       with saposin C is required for the loading of bacterial lipid antigens
CC       onto CD1B in the lysosome (By similarity). {ECO:0000250}.
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DR   EMBL; AF145484; AAF12739.1; -; mRNA.
DR   RefSeq; NP_001166321.1; NM_001172850.1.
DR   AlphaFoldDB; Q9QZZ1; -.
DR   SMR; Q9QZZ1; -.
DR   STRING; 10141.ENSCPOP00000020657; -.
DR   GeneID; 100379550; -.
DR   KEGG; cpoc:100379550; -.
DR   CTD; 100056393; -.
DR   eggNOG; ENOG502SJH6; Eukaryota.
DR   InParanoid; Q9QZZ1; -.
DR   OrthoDB; 827472at2759; -.
DR   Proteomes; UP000005447; Unassembled WGS sequence.
DR   GO; GO:0010008; C:endosome membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005765; C:lysosomal membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0002250; P:adaptive immune response; IEA:UniProtKB-KW.
DR   Gene3D; 2.60.40.10; -; 1.
DR   Gene3D; 3.30.500.10; -; 1.
DR   InterPro; IPR007110; Ig-like_dom.
DR   InterPro; IPR036179; Ig-like_dom_sf.
DR   InterPro; IPR013783; Ig-like_fold.
DR   InterPro; IPR003597; Ig_C1-set.
DR   InterPro; IPR011161; MHC_I-like_Ag-recog.
DR   InterPro; IPR037055; MHC_I-like_Ag-recog_sf.
DR   InterPro; IPR011162; MHC_I/II-like_Ag-recog.
DR   Pfam; PF07654; C1-set; 1.
DR   Pfam; PF16497; MHC_I_3; 1.
DR   SMART; SM00407; IGc1; 1.
DR   SUPFAM; SSF48726; SSF48726; 1.
DR   SUPFAM; SSF54452; SSF54452; 1.
DR   PROSITE; PS50835; IG_LIKE; 1.
PE   2: Evidence at transcript level;
KW   Adaptive immunity; Cell membrane; Disulfide bond; Endosome; Glycoprotein;
KW   Immunity; Immunoglobulin domain; Lysosome; Membrane; Reference proteome;
KW   Signal; Transmembrane; Transmembrane helix.
FT   SIGNAL          1..17
FT                   /evidence="ECO:0000255"
FT   CHAIN           18..332
FT                   /note="T-cell surface glycoprotein CD1b2"
FT                   /id="PRO_0000014584"
FT   TOPO_DOM        18..301
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        302..322
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        323..332
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255"
FT   DOMAIN          185..295
FT                   /note="Ig-like"
FT   MOTIF           328..331
FT                   /note="Internalization signal"
FT                   /evidence="ECO:0000250"
FT   CARBOHYD        38
FT                   /note="N-linked (GlcNAc...) asparagine"
FT                   /evidence="ECO:0000255"
FT   CARBOHYD        75
FT                   /note="N-linked (GlcNAc...) asparagine"
FT                   /evidence="ECO:0000255"
FT   CARBOHYD        146
FT                   /note="N-linked (GlcNAc...) asparagine"
FT                   /evidence="ECO:0000255"
FT   CARBOHYD        297
FT                   /note="N-linked (GlcNAc...) asparagine"
FT                   /evidence="ECO:0000255"
FT   DISULFID        120..184
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00114"
FT   DISULFID        149..163
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00114"
FT   DISULFID        224..279
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00114"
SQ   SEQUENCE   332 AA;  37384 MW;  11D93606657ADC3A CRC64;
     MLLLVLALLA VLFPAGDTQD AFPEPISYYV TQSSSFFNST WAQNQASGWL GDIQIDGWNS
     DSGTIIFRKT WSKGNFSNDE ILEMEELFRL YFLGFVKEVQ ELVSDFQLEY PFEIQGIAGC
     ELHSGGAIVS FLMGAIEGLH FMSINNYSCL PAPEGGTRAQ KFCALILQYK GICDIVENLL
     TKVCPRYLMS VLEAGKAALQ KHVKPEAWLS QGPSPEPGYL QLVCHVSGFY PKPVWVMWMR
     GEQEQPETQR GDVLPNPDDT WYLRATLDVV AKEATGLSCR VKHSSLGGQD IILYWGNSSI
     GWIILAVFVS CLIVLLFYVL WFYKHWSYQD IL