Rubber Biosynthesis Focus

A pathway-centered entry for MVA/MEP, IPP/DMAPP, prenyl donors, CPT/CPTL, REF/SRPP, latex/root-associated and terpenoid candidate genes.

This topic is built from precomputed GFF/GO/KEGG/homology candidate sets and linked evidence from expression, proteome, localization, Pfam, Swiss-Prot, PPI, coexpression and TFBS modules. Results are candidate evidence, not experimental validation.

The current database contains 5523 candidate records, 4979 candidate genes, and 8 pathway steps; the main display is centered on the TK1151 reference while OH-1004/LXL04 remains queryable and linked.

Cross-species Research Reference

4 reference genes are counted separately from rubber-dandelion candidates. They are literature, omics, or sequence resources from Para rubber tree, guayule, a related dandelion, and Eucommia; external function or homology is not direct validation in rubber dandelion.

1. Choose a speciesClick a species card or use the filter to focus on one reference species and material context.
2. Read the evidence typeRead the evidence and boundary column: direct experiments, omics associations, and sequence resources have different interpretation ranges.
3. Verify the sourceEach DOI, article, or public database entry is clickable; download the current filter for further comparison.
Eucommia records are a trans-polyisoprene comparator only and are excluded from natural cis-rubber candidate and pathway-card counts.
Species and materialReference gene / sequence IDPathway stepEvidence and boundarySource
Para rubber treeHevea brasiliensiscis-1,4-polyisopreneRubber particlesHRBPLC057267CPTLCPT/CPTL branchHRT1-complex helper subunitA_direct_experiment
HRBP was reported as a helper subunit in the HRT1 rubber-particle complex.
Complex-support evidence, not a stand-alone catalytic claim.
10.7554/eLife.19022Identification and reconstitution of the rubber biosynthetic machinery on rubber particles from Hevea brasiliensis
Para rubber treeHevea brasiliensiscis-1,4-polyisopreneRubber particlesHRT1BAB71776.2;AB061234.3CPTCPT/CPTL branchRubber-particle cis-prenyltransferaseA_direct_experiment
HRT1 showed in-vitro rubber-transferase activity on detergent-washed rubber particles, with higher activity for the HRT1-REF-HRBP complex.
Direct evidence in Hevea rubber particles; not direct validation in rubber dandelion.
10.7554/eLife.19022Identification and reconstitution of the rubber biosynthetic machinery on rubber particles from Hevea brasiliensis
Para rubber treeHevea brasiliensiscis-1,4-polyisopreneLatex and recombinant enzymeHRT2Q8W3U4;AB064661.2CPTCPT/CPTL branchLatex-expressed cis-prenyltransferase referenceA_enzyme_experiment
HRT2 is retained as a cis-prenyltransferase and latex-expression reference.
Do not claim direct reconstitution of high-molecular-weight natural rubber by HRT2 alone.
10.1046/j.1432-1033.2003.03863.xMolecular cloning expression and characterization of cDNA encoding cis-prenyltransferases from Hevea brasiliensis
Para rubber treeHevea brasiliensiscis-1,4-polyisopreneRubber particlesREFREF complex memberREFREF/SRPP rubber-particle proteinsRubber-particle complex memberA_complex_evidence
HRT1 and HRBP/REF particle-complex evidence; REF is not displayed as a stand-alone catalytic proof.
Not a stand-alone catalytic proof.
10.7554/eLife.19022Identification and reconstitution of the rubber biosynthetic machinery on rubber particles from Hevea brasiliensis

Para rubber tree · HRBP

Sequence IDLC057267
StepCPT/CPTL branch · CPTL
EvidenceHRBP was reported as a helper subunit in the HRT1 rubber-particle complex.
BoundaryComplex-support evidence, not a stand-alone catalytic claim.

Para rubber tree · HRT1

Sequence IDBAB71776.2;AB061234.3
StepCPT/CPTL branch · CPT
EvidenceHRT1 showed in-vitro rubber-transferase activity on detergent-washed rubber particles, with higher activity for the HRT1-REF-HRBP complex.
BoundaryDirect evidence in Hevea rubber particles; not direct validation in rubber dandelion.

Para rubber tree · HRT2

Sequence IDQ8W3U4;AB064661.2
StepCPT/CPTL branch · CPT
EvidenceHRT2 is retained as a cis-prenyltransferase and latex-expression reference.
BoundaryDo not claim direct reconstitution of high-molecular-weight natural rubber by HRT2 alone.

Para rubber tree · REF

Sequence IDREF complex member
StepREF/SRPP rubber-particle proteins · REF
EvidenceHRT1 and HRBP/REF particle-complex evidence; REF is not displayed as a stand-alone catalytic proof.
BoundaryNot a stand-alone catalytic proof.

Pathway Navigation And Candidate Distribution

377 MVA/MEP and isoprenoid
Click to filter · High 204 · Medium 86 · Low 87
4466 Latex/root related candidates
Click to filter · High 231 · Medium 1284 · Low 2951
300 Rubber biosynthesis
Click to filter · High 1 · Medium 287 · Low 12
380 Terpenoid metabolism
Click to filter · High 72 · Medium 107 · Low 201

Candidate Genes

377 candidates match the current filter; 10 are shown per page (page 38 of 38). TSV exports up to 2000 rows under the current filters. Use pathway nodes or summary cards to filter, then inspect Gene Card and linked modules for evidence details.

Gene IDPathway/stepConfidenceEvidence layersLocationKey evidenceActions
LXL04_038407
TK1151: -
OH-1004: LXL04_038407
MVA/MEP and isoprenoid
MEP pathway
Low
score 2
FunctionExpressionLocalizationPfamSwiss-Prot CM104807.1:39872730-39873734
+
lxl04_038407 similar to orf vi: transactivator/viroplasmin protein (figwort mosaic virus (strain dxs) ox=10650)
TkA04G440430
TK1151: TkA04G440430
OH-1004: LXL04_038537
MVA/MEP and isoprenoid
Prenyl-donor metabolism
Low
score 2
GOExpressionLocalizationPfamSwiss-ProtPPICoexpression CM104807.1:43533036-43535571
-
go:0046246 terpene biosynthetic process biological_process
LXL04_038853
TK1151: -
OH-1004: LXL04_038853
MVA/MEP and isoprenoid
Prenyl-donor metabolism
Low
score 2
GOExpressionLocalizationPfamSwiss-ProtCoexpression CM104807.1:51989440-51991302
-
go:0051762 sesquiterpene biosynthetic process biological_process
TkA04G471660
TK1151: TkA04G471660
OH-1004: LXL04_038854
MVA/MEP and isoprenoid
Prenyl-donor metabolism
Low
score 2
GOExpressionLocalizationPfamSwiss-ProtPPICoexpression CM104807.1:52000583-52006478
-
go:0051762 sesquiterpene biosynthetic process biological_process
LXL04_039158
TK1151: -
OH-1004: LXL04_039158
MVA/MEP and isoprenoid
MEP pathway
Low
score 2
FunctionExpressionLocalizationPfamSwiss-Prot CM104807.1:60999065-60999931
-
lxl04_039158 similar to orf v: enzymatic polyprotein (figwort mosaic virus (strain dxs) ox=10650)
LXL04_039159
TK1151: -
OH-1004: LXL04_039159
MVA/MEP and isoprenoid
MEP pathway
Low
score 2
FunctionExpressionLocalizationPfamSwiss-Prot CM104807.1:61009944-61011361
+
lxl04_039159 similar to orf vi: transactivator/viroplasmin protein (figwort mosaic virus (strain dxs) ox=10650)
LXL04_039603
TK1151: -
OH-1004: LXL04_039603
MVA/MEP and isoprenoid
Prenyl-donor metabolism
Low
score 2
GOExpressionLocalizationSwiss-ProtCoexpression JAJTUU010000017.1:563551-565853
+
go:1904629 response to diterpene biological_process

LXL04_038407

MVA/MEP and isoprenoidMEP pathwayLow · score 2
Source ID-
LocationCM104807.1:39872730-39873734 +
EvidenceFunctionExpressionLocalizationPfamSwiss-Prot
Key evidencelxl04_038407 similar to orf vi: transactivator/viroplasmin protein (figwort mosaic virus (strain dxs) ox=10650)

TkA04G440430

MVA/MEP and isoprenoidPrenyl-donor metabolismLow · score 2
Source IDTkA04G440430
LocationCM104807.1:43533036-43535571 -
EvidenceGOExpressionLocalizationPfamSwiss-ProtPPICoexpression
Key evidencego:0046246 terpene biosynthetic process biological_process

LXL04_038853

MVA/MEP and isoprenoidPrenyl-donor metabolismLow · score 2
Source ID-
LocationCM104807.1:51989440-51991302 -
EvidenceGOExpressionLocalizationPfamSwiss-ProtCoexpression
Key evidencego:0051762 sesquiterpene biosynthetic process biological_process

TkA04G471660

MVA/MEP and isoprenoidPrenyl-donor metabolismLow · score 2
Source IDTkA04G471660
LocationCM104807.1:52000583-52006478 -
EvidenceGOExpressionLocalizationPfamSwiss-ProtPPICoexpression
Key evidencego:0051762 sesquiterpene biosynthetic process biological_process

LXL04_039158

MVA/MEP and isoprenoidMEP pathwayLow · score 2
Source ID-
LocationCM104807.1:60999065-60999931 -
EvidenceFunctionExpressionLocalizationPfamSwiss-Prot
Key evidencelxl04_039158 similar to orf v: enzymatic polyprotein (figwort mosaic virus (strain dxs) ox=10650)

LXL04_039159

MVA/MEP and isoprenoidMEP pathwayLow · score 2
Source ID-
LocationCM104807.1:61009944-61011361 +
EvidenceFunctionExpressionLocalizationPfamSwiss-Prot
Key evidencelxl04_039159 similar to orf vi: transactivator/viroplasmin protein (figwort mosaic virus (strain dxs) ox=10650)

LXL04_039603

MVA/MEP and isoprenoidPrenyl-donor metabolismLow · score 2
Source ID-
LocationJAJTUU010000017.1:563551-565853 +
EvidenceGOExpressionLocalizationSwiss-ProtCoexpression
Key evidencego:1904629 response to diterpene biological_process

Evidence Boundary

Current results integrate annotation, GO/KEGG, homology, predicted localization, domains, expression/proteome and network evidence. High/Medium/Low indicates evidence density and consistency, not experimental validation.