ID   A1BG_HORSE              Reviewed;          41 AA.
AC   P39091;
DT   01-FEB-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1995, sequence version 1.
DT   10-FEB-2021, entry version 45.
DE   RecName: Full=Alpha-1B-glycoprotein;
DE   AltName: Full=Alpha-1-B glycoprotein;
DE   AltName: Full=Plasma protein XK;
DE   Flags: Fragment;
GN   Name=A1BG;
OS   Equus caballus (Horse).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Laurasiatheria; Perissodactyla; Equidae; Equus.
OX   NCBI_TaxID=9796;
RN   [1]
RP   PROTEIN SEQUENCE.
RC   TISSUE=Plasma;
RX   PubMed=3248368; DOI=10.1016/0305-0491(88)90330-6;
RA   van de Weghe A., Coppieters W., Bauw G., Vandekerckhove J., Bouquet Y.;
RT   "The homology between the serum proteins PO2 in pig, Xk in horse and alpha
RT   1B-glycoprotein in human.";
RL   Comp. Biochem. Physiol. 90B:751-756(1988).
RN   [2]
RP   PROTEIN SEQUENCE OF 1-15, INTERACTION WITH CRISP3, AND GLYCOSYLATION.
RC   TISSUE=Serum;
RX   PubMed=20116414; DOI=10.1016/j.bbagen.2010.01.011;
RA   Udby L., Johnsen A.H., Borregaard N.;
RT   "Human CRISP-3 binds serum alpha1B-glycoprotein across species.";
RL   Biochim. Biophys. Acta 1800:481-485(2010).
CC   -!- SUBUNIT: Interacts with CRISP3. {ECO:0000269|PubMed:20116414}.
CC   -!- SUBCELLULAR LOCATION: Secreted.
CC   -!- TISSUE SPECIFICITY: Plasma.
CC   -!- PTM: Glycosylated. {ECO:0000269|PubMed:20116414}.
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DR   PIR; PL0028; PL0028.
DR   Proteomes; UP000002281; Unplaced.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Glycoprotein; Immunoglobulin domain;
KW   Reference proteome; Secreted.
FT   CHAIN           1..>41
FT                   /note="Alpha-1B-glycoprotein"
FT                   /id="PRO_0000072664"
FT   CARBOHYD        23
FT                   /note="N-linked (GlcNAc...) asparagine"
FT                   /evidence="ECO:0000255"
FT   VARIANT         11
FT                   /note="W -> L"
FT   VARIANT         26
FT                   /note="Q -> V"
FT   VARIANT         37
FT                   /note="G -> E"
FT   NON_TER         41
SQ   SEQUENCE   41 AA;  4459 MW;  2AA928CBA51FFED6 CRC64;
     AVVFDPPPAL WAEADXQQEP LRNLTQTVGQ YLPTLSGXLA E