ID   ABP4_MAIZE              Reviewed;         204 AA.
AC   P33488;
DT   01-FEB-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1994, sequence version 1.
DT   02-SEP-2026, entry version 127.
DE   RecName: Full=Auxin-binding protein 4;
DE            Short=ABP;
DE   Flags: Precursor;
GN   Name=ABP4;
OS   Zea mays (Maize).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; PACMAD clade;
OC   Panicoideae; Andropogonodae; Andropogoneae; Tripsacinae; Zea.
OX   NCBI_TaxID=4577;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RX   PubMed=8219056; DOI=10.1007/bf00021419;
RA   Hesse T., Garbers C., Brzobohaty B., Kreimer G., Soell D., Melkonian M.,
RA   Schell J., Palme K.;
RT   "Two members of the ERabp gene family are expressed differentially in
RT   reproductive organs but to similar levels in the coleoptile of maize.";
RL   Plant Mol. Biol. 23:57-66(1993).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=cv. Wisconsin 22;
RX   PubMed=7693132; DOI=10.1046/j.1365-313x.1993.04030423.x;
RA   Schwob E., Choi S.-Y., Simmons C., Migliaccio F., Ilag L., Hesse T.,
RA   Palme K., Soell D.;
RT   "Molecular analysis of three maize 22 kDa auxin-binding protein genes
RT   -- transient promoter expression and regulatory regions.";
RL   Plant J. 4:423-432(1993).
CC   -!- FUNCTION: This is probably a receptor for the plant hormone auxin.
CC   -!- SUBUNIT: Homodimer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Endoplasmic reticulum lumen.
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DR   EMBL; S66813; AAB28589.1; -; mRNA.
DR   EMBL; L08426; AAA33431.1; -; Genomic_DNA.
DR   PIR; B43033; B43033.
DR   RefSeq; NP_001105353.1; NM_001111883.2.
DR   AlphaFoldDB; P33488; -.
DR   SMR; P33488; -.
DR   FunCoup; P33488; 2419.
DR   STRING; 4577.P33488; -.
DR   GlyCosmos; P33488; 1 site, No reported glycans.
DR   PaxDb; 4577-P33488; -.
DR   EnsemblPlants; Zm00001eb410760_T001; Zm00001eb410760_P001; Zm00001eb410760.
DR   GeneID; 542294; -.
DR   Gramene; Zm00001eb410760_T001; Zm00001eb410760_P001; Zm00001eb410760.
DR   KEGG; zma:542294; -.
DR   MaizeGDB; 65341; -.
DR   eggNOG; ENOG502RXJU; Eukaryota.
DR   InParanoid; P33488; -.
DR   OMA; VPINDPH; -.
DR   OrthoDB; 2013851at2759; -.
DR   Proteomes; UP000007305; Chromosome 10.
DR   ExpressionAtlas; P33488; baseline and differential.
DR   GO; GO:0005788; C:endoplasmic reticulum lumen; IEA:UniProtKB-SubCell.
DR   GO; GO:0010011; F:auxin binding; ISS:UniProtKB.
DR   GO; GO:0008270; F:zinc ion binding; ISS:UniProtKB.
DR   CDD; cd02220; cupin_ABP1; 1.
DR   FunFam; 2.60.120.10:FF:000080; Auxin-binding protein 1; 1.
DR   Gene3D; 2.60.120.10; Jelly Rolls; 1.
DR   InterPro; IPR000526; Auxin-bd.
DR   InterPro; IPR014710; RmlC-like_jellyroll.
DR   InterPro; IPR011051; RmlC_Cupin_sf.
DR   PANTHER; PTHR37236; AUXIN-BINDING PROTEIN 1; 1.
DR   PANTHER; PTHR37236:SF1; AUXIN-BINDING PROTEIN 1; 1.
DR   Pfam; PF02041; Auxin_BP; 1.
DR   PRINTS; PR00655; AUXINBINDNGP.
DR   SUPFAM; SSF51182; RmlC-like cupins; 1.
DR   PROSITE; PS00014; ER_TARGET; 1.
PE   2: Evidence at transcript level;
KW   Auxin signaling pathway; Disulfide bond; Endoplasmic reticulum;
KW   Glycoprotein; Metal-binding; Receptor; Reference proteome; Signal; Zinc.
FT   SIGNAL          1..41
FT                   /evidence="ECO:0000250"
FT   CHAIN           42..204
FT                   /note="Auxin-binding protein 4"
FT                   /id="PRO_0000020617"
FT   MOTIF           201..204
FT                   /note="Prevents secretion from ER"
FT                   /evidence="ECO:0000255"
FT   BINDING         98
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000250|UniProtKB:P13689"
FT   BINDING         100
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000250|UniProtKB:P13689"
FT   BINDING         104
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000250|UniProtKB:P13689"
FT   BINDING         147
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000250|UniProtKB:P13689"
FT   CARBOHYD        136
FT                   /note="N-linked (GlcNAc...) asparagine"
FT                   /evidence="ECO:0000250|UniProtKB:P13689"
FT   DISULFID        43..196
FT                   /evidence="ECO:0000250|UniProtKB:P13689"
SQ   SEQUENCE   204 AA;  22628 MW;  1C71C94BBCB0D242 CRC64;
     MVRRRPATGA APRPHLAAVG RGLLLASVLA AAASSLPVAE SSCPRDNSLV RDISRMQQRN
     YGREGFSHIT VTGALAHGTK EVEVWLQTFG PGQRTPIHRH SCEEVFIVLK GKGTLLLGSS
     SLKYPGQPQE VPVFQNTTFS IPVNDPHQVW NSNEHEDLQV LVIISRPPVK IFIYDDWSMP
     HTAAKLKFPY FWDEDCLPAP KDEL
//