KAB10_OLDAF
ID KAB10_OLDAF Reviewed; 30 AA.
AC P85128;
DT 10-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT 10-JUL-2007, sequence version 1.
DT 25-MAY-2022, entry version 32.
DE RecName: Full=Kalata-B10;
OS Oldenlandia affinis.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC asterids; lamiids; Gentianales; Rubiaceae; Rubioideae; Spermacoceae;
OC Hedyotis-Oldenlandia complex; Oldenlandia.
OX NCBI_TaxID=60225;
RN [1] {ECO:0000305}
RP PROTEIN SEQUENCE, MASS SPECTROMETRY, AND MODIFICATION AT TRP-24.
RX PubMed=17534989; DOI=10.1002/cbic.200700097;
RA Plan M.R.R., Goeransson U., Clark R.J., Daly N.L., Colgrave M.L.,
RA Craik D.J.;
RT "The cyclotide fingerprint in Oldenlandia affinis: elucidation of
RT chemically modified, linear and novel macrocyclic peptides.";
RL ChemBioChem 8:1001-1011(2007).
CC -!- FUNCTION: Probably participates in a plant defense mechanism.
CC {ECO:0000305}.
CC -!- DOMAIN: The presence of a 'disulfide through disulfide knot'
CC structurally defines this protein as a knottin.
CC {ECO:0000250|UniProtKB:P83836}.
CC -!- PTM: This peptide occurs in both cyclic and linear forms. The linear
CC form contains unmodified Trp-24, the cyclic peptide occurs in two forms
CC with unmodified Trp-24, and with Trp-24 oxidized to form
CC oxindolylalanine. Oxidation is enhanced by exposure to sunlight.
CC {ECO:0000269|PubMed:17534989}.
CC -!- MASS SPECTROMETRY: Mass=3030.5; Method=Electrospray; Note=Cyclic form.;
CC Evidence={ECO:0000269|PubMed:17534989};
CC -!- MASS SPECTROMETRY: Mass=3048.5; Method=Electrospray; Note=Linear form.;
CC Evidence={ECO:0000269|PubMed:17534989};
CC -!- MASS SPECTROMETRY: Mass=3046.5; Method=Electrospray; Note=With
CC oxindolylalanine.; Evidence={ECO:0000269|PubMed:17534989};
CC -!- SIMILARITY: Belongs to the cyclotide family. Moebius subfamily.
CC {ECO:0000255|PROSITE-ProRule:PRU00395}.
CC -!- CAUTION: The oxidation form of Trp-24 is subject of controversy and
CC could be the artifactual result of sample handling.
CC {ECO:0000305|PubMed:17534989}.
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DR AlphaFoldDB; P85128; -.
DR SMR; P85128; -.
DR GO; GO:0006952; P:defense response; IEA:UniProtKB-KW.
DR InterPro; IPR005535; Cyclotide.
DR InterPro; IPR012324; Cyclotide_moebius_CS.
DR InterPro; IPR036146; Cyclotide_sf.
DR Pfam; PF03784; Cyclotide; 1.
DR PIRSF; PIRSF037891; Cycloviolacin; 1.
DR SUPFAM; SSF57038; SSF57038; 1.
DR PROSITE; PS51052; CYCLOTIDE; 1.
DR PROSITE; PS60009; CYCLOTIDE_MOEBIUS; 1.
PE 1: Evidence at protein level;
KW Direct protein sequencing; Disulfide bond; Knottin; Plant defense.
FT PEPTIDE 1..30
FT /note="Kalata-B10"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00395,
FT ECO:0000269|PubMed:17534989"
FT /id="PRO_0000294957"
FT DISULFID 5..19
FT /evidence="ECO:0000250|UniProtKB:P83836,
FT ECO:0000255|PROSITE-ProRule:PRU00395"
FT DISULFID 9..21
FT /evidence="ECO:0000250|UniProtKB:P83836,
FT ECO:0000255|PROSITE-ProRule:PRU00395"
FT DISULFID 14..27
FT /evidence="ECO:0000250|UniProtKB:P83836,
FT ECO:0000255|PROSITE-ProRule:PRU00395"
FT CROSSLNK 1..30
FT /note="Cyclopeptide (Gly-Asp)"
FT /evidence="ECO:0000269|PubMed:17534989"
SQ SEQUENCE 30 AA; 3054 MW; C8626F2FCF6D26EC CRC64;
GLPTCGETCF GGTCNTPGCS CSSWPICTRD