Page last updated: 2024-11-13

kalata b1

Description Research Excerpts Clinical Trials Roles Classes Pathways Study Profile Bioassays Related Drugs Related Conditions Protein Interactions Research Growth Market Indicators

Description

kalata B1: a 29-residue cyclotide which has a cystine knot structure and beta-sheet; causes uterine contraction; the principal active component from Oldenlandia affinis; amino acid sequence given in first source [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

FloraRankFlora DefinitionFamilyFamily Definition
OldenlandiagenusA plant genus of the family RUBIACEAE. Some species are used as an ingredient in Chinese and African traditional medicines. Members contain kalata B1, a macrocyclic peptide.[MeSH]RubiaceaeThe Madder plant family of the order Gentianales (formerly Rubiales), subclass Asteridae, class Magnoliopsida includes important medicinal plants that provide QUININE; IPECAC; and COFFEE. They have opposite leaves and interpetiolar stipules.[MeSH]

Cross-References

ID SourceID
PubMed CID46231131
CHEMBL ID604166
MeSH IDM0242773

Synonyms (3)

Synonym
bdbm50090473
kalata b1
CHEMBL604166

Research Excerpts

Overview

Kalata B1 is a plant protein with remarkable thermal, chemical and enzymatic stability. It is a member of a new family of polypeptides, isolated from plants, which have a cystine knot structure embedded within an amide-cyclized backbone.

ExcerptReferenceRelevance
"Kalata B1 is a plant protein with remarkable thermal, chemical and enzymatic stability. "( Synthesis and disulfide bond connectivity-activity studies of a kalata B1-inspired cyclopeptide against dengue NS2B-NS3 protease.
Cui, T; Gao, Y; Lam, Y, 2010
)
2.04
"Kalata B1 is a member of a new family of polypeptides, isolated from plants, which have a cystine knot structure embedded within an amide-cyclized backbone. "( Chemical synthesis and folding pathways of large cyclic polypeptides: studies of the cystine knot polypeptide kalata B1.
Alewood, PF; Craik, DJ; Daly, NL; Love, S, 1999
)
1.96
"Kalata B1 is a prototypic member of the unique cyclotide family of macrocyclic polypeptides in which the major structural features are a circular peptide backbone, a triple-stranded beta-sheet, and a cystine knot arrangement of three disulfide bonds. "( Acyclic permutants of naturally occurring cyclic proteins. Characterization of cystine knot and beta-sheet formation in the macrocyclic polypeptide kalata B1.
Craik, DJ; Daly, NL, 2000
)
1.95

Effects

ExcerptReferenceRelevance
"Kalata B1 has been demonstrated to have bioactivity relating to membrane disruption. "( Defining the membrane disruption mechanism of kalata B1 via coarse-grained molecular dynamics simulations.
Hannongbua, S; Nawae, W; Ruengjitchatchawalya, M, 2014
)
2.1

Pharmacokinetics

ExcerptReferenceRelevance
" Here we report preclinical pharmacokinetic parameters for the prototypic cyclotide kalata B1 (kB1) and two orally active grafted analogues, ckb-KAL and ckb-KIN, to provide the first in vivo dose-exposure metrics for cyclotides."( Pharmacokinetic characterization of kalata B1 and related therapeutics built on the cyclotide scaffold.
Craik, DJ; Huang, YH; Kan, MW; Le, TT; Poth, AG, 2019
)
1.01

Bioavailability

ExcerptReferenceRelevance
" Native and grafted kB1 molecules exhibited multiple compartment kinetics and measurable but limited oral bioavailability of similar magnitude to several orally administered peptide drugs in the clinic."( Pharmacokinetic characterization of kalata B1 and related therapeutics built on the cyclotide scaffold.
Craik, DJ; Huang, YH; Kan, MW; Le, TT; Poth, AG, 2019
)
0.79

Dosage Studied

ExcerptRelevanceReference
" At a sub-lethal concentration, cycloviolacin O2 and vaby D gave a bell-shaped dose-response curve for their DNA-damaging effect."( Genotoxicity and cellular uptake of cyclotides: evidence for multiple modes of action.
Burman, R; Göransson, U; Hellman, B; Yeshak, MY, 2012
)
0.38
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Bioassays (20)

Assay IDTitleYearJournalArticle
AID605670Antimicrobial activity against Staphylococcus aureus ATCC 292132010Journal of natural products, Sep-24, Volume: 73, Issue:9
Isolation, sequencing, and structure-activity relationships of cyclotides.
AID409502Cytotoxicity against VEGF-A induced mouse BAF3-VEGF-R2 cells at >10 uM2008Journal of medicinal chemistry, Dec-25, Volume: 51, Issue:24
Engineering stabilized vascular endothelial growth factor-A antagonists: synthesis, structural characterization, and bioactivity of grafted analogues of cyclotides.
AID605688Insecticidal activity against Helicoverpa punctigera assessed as inhibition of development of larvae at 0.825 umol/g after 16 days2010Journal of natural products, Sep-24, Volume: 73, Issue:9
Isolation, sequencing, and structure-activity relationships of cyclotides.
AID654381Induction of apoptosis in human activated PBMC assessed as necrosis at 14 uM by annexinV/propidium iodide staining-based flow cytometric analysis2012Journal of natural products, Feb-24, Volume: 75, Issue:2
Do plant cyclotides have potential as immunosuppressant peptides?
AID1228339Inhibition of bovine trypsin at 25 uM pre-incubated for 15 mins before Bz-Arg-AMC-HCl substrate addition and further incubated for 1 hr by fluorimetry2015Journal of natural products, May-22, Volume: 78, Issue:5
Inhibition of Human Prolyl Oligopeptidase Activity by the Cyclotide Psysol 2 Isolated from Psychotria solitudinum.
AID605672Antiviral activity against HIV1 infected in human CEM-SS cells assessed as protection against virus-induced cytopathic effect by XTT method2010Journal of natural products, Sep-24, Volume: 73, Issue:9
Isolation, sequencing, and structure-activity relationships of cyclotides.
AID605687Hemolytic activity in human RBC2010Journal of natural products, Sep-24, Volume: 73, Issue:9
Isolation, sequencing, and structure-activity relationships of cyclotides.
AID605673Antivirus activity against HIV1 RF infected in human CEM-SS cells assessed as inhibition of virus-induced cytopathic effect2010Journal of natural products, Sep-24, Volume: 73, Issue:9
Isolation, sequencing, and structure-activity relationships of cyclotides.
AID654505Antiproliferative activity against activated human PBMC assessed as decrease in cell division after 72 hrs by flow cytometric analysis2012Journal of natural products, Feb-24, Volume: 75, Issue:2
Do plant cyclotides have potential as immunosuppressant peptides?
AID605692Uterotonic activity in rabbit2010Journal of natural products, Sep-24, Volume: 73, Issue:9
Isolation, sequencing, and structure-activity relationships of cyclotides.
AID605617Antimicrobial activity against Candida kefyr ATCC 370952010Journal of natural products, Sep-24, Volume: 73, Issue:9
Isolation, sequencing, and structure-activity relationships of cyclotides.
AID1228338Inhibition of human recombinant POP pre-incubated for 15 mins before Z-Gly-Pro-AMC substrate addition and further incubated for 1 hr by fluorimetry2015Journal of natural products, May-22, Volume: 78, Issue:5
Inhibition of Human Prolyl Oligopeptidase Activity by the Cyclotide Psysol 2 Isolated from Psychotria solitudinum.
AID605691Uterotonic activity in rat2010Journal of natural products, Sep-24, Volume: 73, Issue:9
Isolation, sequencing, and structure-activity relationships of cyclotides.
AID1228340Inhibition of bovine alpha-chymotrypsin at 75 uM pre-incubated for 15 mins before Ala-Ala-Phe-AMC substrate addition and further incubated for 1 hr by fluorimetry2015Journal of natural products, May-22, Volume: 78, Issue:5
Inhibition of Human Prolyl Oligopeptidase Activity by the Cyclotide Psysol 2 Isolated from Psychotria solitudinum.
AID604447Uterotonic activity in human2010Journal of natural products, Sep-24, Volume: 73, Issue:9
Isolation, sequencing, and structure-activity relationships of cyclotides.
AID378686Toxicity against human type A red blood cells assessed as hemolytic activity after 1hr2006Journal of natural products, Jan, Volume: 69, Issue:1
Cycloviolacin H4, a hydrophobic cyclotide from Viola hederaceae.
AID654507Induction of apoptosis in human activated PBMC at 1.8 to 14 uM by annexinV/propidium iodide staining-based flow cytometric analysis2012Journal of natural products, Feb-24, Volume: 75, Issue:2
Do plant cyclotides have potential as immunosuppressant peptides?
AID460481Inhibition of Dengue virus 2 recombinant NS2B/3 protease expressed in Escherichia coli BL21(DE3) assessed as Dabcyl-KGRRSSKL-Edans substrate cleavage by fluorimetry2010Bioorganic & medicinal chemistry, Feb, Volume: 18, Issue:3
Synthesis and disulfide bond connectivity-activity studies of a kalata B1-inspired cyclopeptide against dengue NS2B-NS3 protease.
AID409500Toxicity in human erythrocytes assessed as hemolytic activity at 50 uM2008Journal of medicinal chemistry, Dec-25, Volume: 51, Issue:24
Engineering stabilized vascular endothelial growth factor-A antagonists: synthesis, structural characterization, and bioactivity of grafted analogues of cyclotides.
AID605667Antimicrobial activity against Klebsiella oxytoca ATCC 491312010Journal of natural products, Sep-24, Volume: 73, Issue:9
Isolation, sequencing, and structure-activity relationships of cyclotides.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (102)

TimeframeStudies, This Drug (%)All Drugs %
pre-19900 (0.00)18.7374
1990's5 (4.90)18.2507
2000's41 (40.20)29.6817
2010's49 (48.04)24.3611
2020's7 (6.86)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 28.90

According to the monthly volume, diversity, and competition of internet searches for this compound, as well the volume and growth of publications, there is estimated to be moderate demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index28.90 (24.57)
Research Supply Index4.64 (2.92)
Research Growth Index5.19 (4.65)
Search Engine Demand Index36.71 (26.88)
Search Engine Supply Index2.00 (0.95)

This Compound (28.90)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials0 (0.00%)5.53%
Reviews12 (11.65%)6.00%
Case Studies0 (0.00%)4.05%
Observational0 (0.00%)0.25%
Other91 (88.35%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]