ID   NIP21_MAIZE             Reviewed;         295 AA.
AC   Q19KC1; Q9ATN3;
DT   01-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2007, sequence version 2.
DT   25-MAY-2022, entry version 88.
DE   RecName: Full=Aquaporin NIP2-1;
DE   AltName: Full=NOD26-like intrinsic protein 2-1;
DE   AltName: Full=ZmNIP2-1;
DE   AltName: Full=ZmNIP2;1;
GN   Name=NIP2-1; Synonyms=LSI1;
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], GENE FAMILY, AND NOMENCLATURE.
RC   STRAIN=cv. B73;
RX   PubMed=11244102; DOI=10.1104/pp.125.3.1206;
RA   Chaumont F., Barrieu F., Wojcik E., Chrispeels M.J., Jung R.;
RT   "Aquaporins constitute a large and highly divergent protein family in
RT   maize.";
RL   Plant Physiol. 125:1206-1215(2001).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RA   Hu H., Ye C., He W., Li Q.;
RT   "A silicon transporter in Zea mays.";
RL   Submitted (APR-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Aquaporins facilitate the transport of water and small
CC       neutral solutes across cell membranes. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Membrane {ECO:0000305}; Multi-pass membrane
CC       protein {ECO:0000305}.
CC   -!- DOMAIN: Aquaporins contain two tandem repeats each containing three
CC       membrane-spanning domains and a pore-forming loop with the signature
CC       motif Asn-Pro-Ala (NPA).
CC   -!- SIMILARITY: Belongs to the MIP/aquaporin (TC 1.A.8) family. NIP (TC
CC       1.A.8.12) subfamily. {ECO:0000305}.
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DR   EMBL; AF326484; AAK26751.1; -; mRNA.
DR   EMBL; DQ524811; ABF67956.1; -; mRNA.
DR   RefSeq; NP_001105637.1; NM_001112167.1.
DR   AlphaFoldDB; Q19KC1; -.
DR   SMR; Q19KC1; -.
DR   STRING; 4577.GRMZM2G028325_P01; -.
DR   PaxDb; Q19KC1; -.
DR   EnsemblPlants; Zm00001eb254540_T001; Zm00001eb254540_P001; Zm00001eb254540.
DR   GeneID; 542643; -.
DR   Gramene; Zm00001eb254540_T001; Zm00001eb254540_P001; Zm00001eb254540.
DR   KEGG; zma:542643; -.
DR   eggNOG; KOG0223; Eukaryota.
DR   HOGENOM; CLU_020019_3_1_1; -.
DR   OMA; IRAIAYF; -.
DR   OrthoDB; 1152704at2759; -.
DR   Proteomes; UP000007305; Chromosome 5.
DR   ExpressionAtlas; Q19KC1; baseline and differential.
DR   Genevisible; Q19KC1; ZM.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0015267; F:channel activity; IEA:InterPro.
DR   GO; GO:0015840; P:urea transport; IDA:CACAO.
DR   CDD; cd00333; MIP; 1.
DR   Gene3D; 1.20.1080.10; -; 1.
DR   InterPro; IPR023271; Aquaporin-like.
DR   InterPro; IPR034294; Aquaporin_transptr.
DR   InterPro; IPR000425; MIP.
DR   InterPro; IPR022357; MIP_CS.
DR   PANTHER; PTHR45724; PTHR45724; 1.
DR   Pfam; PF00230; MIP; 1.
DR   PRINTS; PR00783; MINTRINSICP.
DR   SUPFAM; SSF81338; SSF81338; 1.
DR   PROSITE; PS00221; MIP; 1.
PE   2: Evidence at transcript level;
KW   Membrane; Reference proteome; Repeat; Transmembrane; Transmembrane helix;
KW   Transport.
FT   CHAIN           1..295
FT                   /note="Aquaporin NIP2-1"
FT                   /id="PRO_0000286030"
FT   TRANSMEM        49..69
FT                   /note="Helical; Name=1"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        83..103
FT                   /note="Helical; Name=2"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        124..146
FT                   /note="Helical; Name=3"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        164..184
FT                   /note="Helical; Name=4"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        192..212
FT                   /note="Helical; Name=5"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        230..250
FT                   /note="Helical; Name=6"
FT                   /evidence="ECO:0000255"
FT   MOTIF           106..108
FT                   /note="NPA 1"
FT                   /evidence="ECO:0000250"
FT   MOTIF           217..219
FT                   /note="NPA 2"
FT                   /evidence="ECO:0000250"
FT   CONFLICT        258
FT                   /note="E -> D (in Ref. 2; ABF67956)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        263..266
FT                   /note="HKDM -> KDPTTSH (in Ref. 2; ABF67956)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        285..289
FT                   /note="VDDDE -> ADADDDED (in Ref. 2; ABF67956)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   295 AA;  31761 MW;  DA3D86EA5DFBE7F4 CRC64;
     MSTNSRSNSR ANFNNEIHDI GTAQNSSMPP TYYDRSLADI FPPHLLKKVV SEVVSTFLLV
     FVTCGAAGIY GSDKDRISQL GQSVAGGLIV TVMIYAVGHI SGAHMNPAVT LAFAVFRHFP
     WIQVPFYWAA QFTGSICASF VLKAVLHPIA VLGTTTPTGP HWHSLVIEII VTFNMMFVTL
     AVATDTRAVG ELAGLAVGSA VCITSIFAGA VSGGSMNPAR TLGPALASNL YTGLWIYFLG
     PVLGTLSGAW TYTYIRFEEA PSHKDMSQKL SSFKLRRLQS QSVAVDDDEL DHIQV