ID   LEC_ULVPE               Reviewed;         203 AA.
AC   Q6T6H8; P83209;
DT   09-JAN-2007, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   25-MAY-2022, entry version 18.
DE   RecName: Full=Lectin;
DE   Flags: Precursor;
GN   Name=UPL1;
OS   Ulva pertusa (Sea lettuce).
OC   Eukaryota; Viridiplantae; Chlorophyta; Ulvophyceae; OUU clade; Ulvales;
OC   Ulvaceae; Ulva.
OX   NCBI_TaxID=3120;
RN   [1] {ECO:0000305, ECO:0000312|EMBL:AAR32648.1}
RP   NUCLEOTIDE SEQUENCE [MRNA], PROTEIN SEQUENCE OF 54-73, FUNCTION,
RP   BIOPHYSICOCHEMICAL PROPERTIES, SUBUNIT, AND CALCIUM REQUIREMENT.
RX   PubMed=14970906; DOI=10.1093/abbs/36.2.111;
RA   Wang S., Zhong F.-D., Zhang Y.-J., Wu Z.-J., Lin Q.-Y., Xie L.-H.;
RT   "Molecular characterization of a new lectin from the marine alga Ulva
RT   pertusa.";
RL   Acta Biochim. Biophys. Sin. 36:111-117(2004).
CC   -!- FUNCTION: N-acetyl-D-glucosamine-specific lectin. Specifically
CC       agglutinates rabbit erythrocytes. {ECO:0000269|PubMed:14970906}.
CC   -!- BIOPHYSICOCHEMICAL PROPERTIES:
CC       pH dependence:
CC         Optimum pH is 6.0-8.0. No activity below pH 3.0 or above pH 11.0.
CC         {ECO:0000269|PubMed:14970906};
CC       Temperature dependence:
CC         Thermostable. Activity unaffected after incubation for 30 minutes at
CC         30-70 degrees Celsius. Retains 50% of its maximal activity after
CC         incubation at 80 degrees Celsius for 30 minutes.
CC         {ECO:0000269|PubMed:14970906};
CC   -!- SUBUNIT: Monomer. {ECO:0000269|PubMed:14970906}.
CC   -!- MISCELLANEOUS: Divalent cations are required for ligand binding.
CC       Calcium is the most effective, but manganese or zinc can also be used
CC       to a lesser extent. {ECO:0000269|PubMed:14970906}.
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DR   EMBL; AY433960; AAR32648.1; -; mRNA.
DR   AlphaFoldDB; Q6T6H8; -.
DR   GO; GO:0030246; F:carbohydrate binding; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Hemagglutinin; Lectin; Signal.
FT   SIGNAL          1..20
FT                   /evidence="ECO:0000255"
FT   PROPEP          21..53
FT                   /evidence="ECO:0000255, ECO:0000269|PubMed:14970906"
FT                   /id="PRO_0000271419"
FT   CHAIN           54..203
FT                   /note="Lectin"
FT                   /evidence="ECO:0000269|PubMed:14970906"
FT                   /id="PRO_0000271420"
SQ   SEQUENCE   203 AA;  22195 MW;  937A97774FE7BF0B CRC64;
     MINILHVIAG LALASVGVDA RQVGVGADVL HAVENTIDSI TGVEASHSAL EVGGGITNTD
     NWETFAGLPL TGAIKVNDGN SVVHISAYFP EDRRGKYSYY AATSDELQKT VVFLFVVEDD
     GLLLQAVKNN AHYPVTNGMY LASHRYYPKD SKYEGMVRLM VHADPAKAVI WEFVTVGGKQ
     YLKVKENRDY TALQIPRHHP RPG