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Protein

Lethal(3)malignant brain tumor-like protein 1

Gene

L3mbtl1

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Protein inferred from homologyi

Functioni

Polycomb group (PcG) protein that specifically recognizes and binds mono- and dimethyllysine residues on target proteins, therey acting as a 'reader' of a network of post-translational modifications. PcG proteins maintain the transcriptionally repressive state of genes: acts as a chromatin compaction factor by recognizing and binding mono- and dimethylated histone H1b/HIST1H1E at 'Lys-26' (H1bK26me1 and H1bK26me2) and histone H4 at 'Lys-20' (H4K20me1 and H4K20me2), leading to condense chromatin and repress transcription. Recognizes and binds p53/TP53 monomethylated at 'Lys-382', leading to repress p53/TP53-target genes. Also recognizes and binds RB1/RB monomethylated at 'Lys-860'. Participates in the ETV6-mediated repression. Probably plays a role in cell proliferation. Overexpression induces multinucleated cells, suggesting that it is required to accomplish normal mitosis (By similarity).By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sitei429Mediates recognition of monomethylated and dimethylated peptidesBy similarity1
Sitei432Positioned at the entrance of MBT 2 and is required for recognition of monomethylated and dimethylated peptidesBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri619 – 662CCHHC-typePROSITE-ProRule annotationAdd BLAST44

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Chromatin regulator, Repressor

Keywords - Biological processi

Transcription, Transcription regulation

Keywords - Ligandi

Metal-binding, Zinc

Enzyme and pathway databases

ReactomeiR-RNO-6804760. Regulation of TP53 Activity through Methylation.

Names & Taxonomyi

Protein namesi
Recommended name:
Lethal(3)malignant brain tumor-like protein 1
Short name:
H-l(3)mbt
Short name:
H-l(3)mbt protein
Short name:
L(3)mbt-like
Alternative name(s):
L(3)mbt protein homolog
Gene namesi
Name:L3mbtl1
Synonyms:L3mbt, L3mbtl
OrganismiRattus norvegicus (Rat)
Taxonomic identifieri10116 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaSciurognathiMuroideaMuridaeMurinaeRattus
Proteomesi
  • UP000002494 Componenti: Chromosome 3

Organism-specific databases

RGDi1307316. L3mbtl1.

Subcellular locationi

  • Nucleus By similarity

  • Note: Excluded from the nucleolus. Does not colocalizes with the PcG protein BMI1, suggesting that these two proteins do not belong to the same complex (By similarity).By similarity

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00004058321 – 826Lethal(3)malignant brain tumor-like protein 1Add BLAST826

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei136PhosphoserineBy similarity1

Post-translational modificationi

Ubiquitinated in a VCP/p97-dependent way following DNA damage, leading to its removal from DNA damage sites, promoting accessibility of H4K20me2 mark for DNA repair protein TP53BP1, which is then recruited to DNA damage sites.By similarity

Keywords - PTMi

Phosphoprotein, Ubl conjugation

Proteomic databases

PaxDbiD3ZWK4.
PRIDEiD3ZWK4.

Expressioni

Gene expression databases

BgeeiENSRNOG00000007044.
ExpressionAtlasiD3ZWK4. baseline and differential.

Interactioni

Subunit structurei

Homodimer. Interacts with RB1/RB (when monomethylated at 'Lys-860'). Interacts with p53/TP53 (when monomethylated at 'Lys-382'). Interacts with CBX3, ETV6, KMT5A and VCP/p97 (By similarity).By similarity

GO - Molecular functioni

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000049326.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Repeati280 – 380MBT 1Add BLAST101
Repeati388 – 487MBT 2Add BLAST100
Repeati496 – 591MBT 3Add BLAST96
Domaini757 – 821SAMPROSITE-ProRule annotationAdd BLAST65

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni453 – 460Interaction with monomethylated and dimethylated peptidesBy similarity8

Domaini

The MBT repeat 2 specifically recognizes and binds monomethylated and dimethylated proteins. In contrast, it does not bind trimethylated proteins. The MBT repeat 1 does not bind methylated peptides but inserts a proline ring in a Pro-Ser-Ser/Thr sequence context (By similarity).By similarity

Sequence similaritiesi

Contains 1 CCHHC-type zinc finger.PROSITE-ProRule annotation
Contains 3 MBT repeats.PROSITE-ProRule annotation
Contains 1 SAM (sterile alpha motif) domain.PROSITE-ProRule annotation

Zinc finger

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri619 – 662CCHHC-typePROSITE-ProRule annotationAdd BLAST44

Keywords - Domaini

Repeat, Zinc-finger

Phylogenomic databases

eggNOGiKOG3766. Eukaryota.
ENOG410Y4AQ. LUCA.
GeneTreeiENSGT00760000119024.
InParanoidiD3ZWK4.
OMAiCTSASEL.
OrthoDBiEOG091G01BW.
PhylomeDBiD3ZWK4.
TreeFamiTF316498.

Family and domain databases

Gene3Di1.10.150.50. 1 hit.
InterProiIPR004092. Mbt.
IPR001660. SAM.
IPR013761. SAM/pointed.
IPR002515. Znf_C2HC.
[Graphical view]
PfamiPF02820. MBT. 3 hits.
PF00536. SAM_1. 1 hit.
PF01530. zf-C2HC. 1 hit.
[Graphical view]
SMARTiSM00561. MBT. 3 hits.
SM00454. SAM. 1 hit.
[Graphical view]
SUPFAMiSSF47769. SSF47769. 1 hit.
PROSITEiPS51079. MBT. 3 hits.
PS50105. SAM_DOMAIN. 1 hit.
PS51802. ZF_CCHHC. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

D3ZWK4-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MEGHSDMEII RAVKGSATGE INVHLVARDS AGSHPHLPTT TFIIPTNAAT
60 70 80 90 100
LGLPSTALDV SYPREPVHVG AAERVAGSEP VTATILPQLS TGPGTNSTVR
110 120 130 140 150
LLDWTGVSAP LAGSGMRFRI NEYATQNMIE IERPRSPEQR HEGGTAGREA
160 170 180 190 200
DIQHPDVHKD PQEVIPQEPS VDAGSCKCQT CGPQQSIGLD VGSSGDRCPQ
210 220 230 240 250
PFQKRSVIVE NSGCTVASEL IKPMKKRKHK EYQSPSEESE PEAMKQGKGK
260 270 280 290 300
DPDREPTPGT SENEEWSRSQ LVSSEKKEGW SWESYLEEQK AVTAPVSLFQ
310 320 330 340 350
DSQAVTHNKN GFKLGMKLEG VDPQHPSMYF VLTVAEVCGY RLRLHFDGYS
360 370 380 390 400
ECHDFWVNAN SPDIHPAGWF EKTGHKLQPP KGYKEEEFSW SQYLRSTKAQ
410 420 430 440 450
AAPKHLFVSQ SHSPPPVGFQ VGMKLEAVDR MNPSLVCVAS VTDVVASRFL
460 470 480 490 500
VHFDDWDDTY DYWCDASSPY IHPVGWCQKQ GKPLTPPQDY PDPDSFCWEK
510 520 530 540 550
YLEETGTSAV PTWAFKVRPP HSFLVNMKLE AVDRRNPALI RVASVEDVED
560 570 580 590 600
HRIKLHFDGW SHNYDFWIDA DHPDIHPAGW CSKTGHPLEP PLRPRESSSA
610 620 630 640 650
SPGGCPPLSH RSPPHTKTSK YSFHHRKCPT PGCDGSGHVT GKFTAHHCLS
660 670 680 690 700
GCPLAERNQS RLKAELSDSE TTARKKNQSN LSPRKKPRHQ GRIGRPPKYR
710 720 730 740 750
KMPDEDFQAL PPSVVHQSLF MSTLPTHADR PLSVCWEQHC KLLPGVAGIS
760 770 780 790 800
ASAVSKWTIE EVFGFVQTLT GSEDQARLFK EEMIDGEAFL LLTQADIVKI
810 820
MSVKLGPALK IYNAILMFKN NDDVFK
Length:826
Mass (Da):91,761
Last modified:April 20, 2010 - v1
Checksum:i84F73339BC6EE6C7
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CH474005 Genomic DNA. Translation: EDL96599.1.

Genome annotation databases

EnsembliENSRNOT00000045677; ENSRNOP00000049326; ENSRNOG00000007044.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CH474005 Genomic DNA. Translation: EDL96599.1.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000049326.

Proteomic databases

PaxDbiD3ZWK4.
PRIDEiD3ZWK4.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENSRNOT00000045677; ENSRNOP00000049326; ENSRNOG00000007044.

Organism-specific databases

RGDi1307316. L3mbtl1.

Phylogenomic databases

eggNOGiKOG3766. Eukaryota.
ENOG410Y4AQ. LUCA.
GeneTreeiENSGT00760000119024.
InParanoidiD3ZWK4.
OMAiCTSASEL.
OrthoDBiEOG091G01BW.
PhylomeDBiD3ZWK4.
TreeFamiTF316498.

Enzyme and pathway databases

ReactomeiR-RNO-6804760. Regulation of TP53 Activity through Methylation.

Miscellaneous databases

PROiD3ZWK4.

Gene expression databases

BgeeiENSRNOG00000007044.
ExpressionAtlasiD3ZWK4. baseline and differential.

Family and domain databases

Gene3Di1.10.150.50. 1 hit.
InterProiIPR004092. Mbt.
IPR001660. SAM.
IPR013761. SAM/pointed.
IPR002515. Znf_C2HC.
[Graphical view]
PfamiPF02820. MBT. 3 hits.
PF00536. SAM_1. 1 hit.
PF01530. zf-C2HC. 1 hit.
[Graphical view]
SMARTiSM00561. MBT. 3 hits.
SM00454. SAM. 1 hit.
[Graphical view]
SUPFAMiSSF47769. SSF47769. 1 hit.
PROSITEiPS51079. MBT. 3 hits.
PS50105. SAM_DOMAIN. 1 hit.
PS51802. ZF_CCHHC. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiLMBL1_RAT
AccessioniPrimary (citable) accession number: D3ZWK4
Secondary accession number(s): D4A6H6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: March 8, 2011
Last sequence update: April 20, 2010
Last modified: November 30, 2016
This is version 52 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.