UniProtKB - Q55BP0 (H33C_DICDI)
Protein
Histone H3.3 type c
Gene
H3c
Organism
Dictyostelium discoideum (Slime mold)
Status
Functioni
Core component of nucleosome. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling.1 Publication
Caution
To ensure consistency between histone entries, we follow the 'Brno' nomenclature for histone modifications, with positions referring to those used in the literature for the 'closest' model organism. Due to slight variations in histone sequences between organisms and to the presence of initiator methionine in UniProtKB/Swiss-Prot sequences, the actual positions of modified amino acids in the sequence generally differ. In this entry the following conventions are used: H3K4me1/2/3 = mono-, di- and trimethylated Lys-5; H3K9ac = acetylated Lys-10; H3K9me1 = monomethylated Lys-10; H3S10ph = phosphorylated Ser-11; H3K14ac = acetylated Lys-15; H3K14me2 = dimethylated Lys-15; H3K18ac = acetylated Lys-19; H3K18me1 = monomethylated Lys-19; H3K23ac = acetylated Lys-24; H3K23me1 = monomethylated Lys-24; H3K27ac = acetylated Lys-28; H3K27me1/2/3 = mono-, di- and trimethylated Lys-28; H3K36ac = acetylated Lys-37; H3K36me1/2/3 = mono-, di- and trimethylated Lys-37; H3K56ac = acetylated Lys-57; H3K64ac = acetylated Lys-68; H3K79me1/2/3 = mono-, di- and trimethylated Lys-80.Curated
GO - Molecular functioni
- DNA binding Source: UniProtKB-KW
- protein heterodimerization activity Source: InterPro
Keywordsi
Molecular function | DNA-binding |
Enzyme and pathway databases
Reactomei | R-DDI-1266695 Interleukin-7 signaling R-DDI-2299718 Condensation of Prophase Chromosomes R-DDI-2559580 Oxidative Stress Induced Senescence R-DDI-3214841 PKMTs methylate histone lysines R-DDI-3214842 HDMs demethylate histones R-DDI-3214847 HATs acetylate histones R-DDI-3214858 RMTs methylate histone arginines R-DDI-3247509 Chromatin modifying enzymes R-DDI-73772 RNA Polymerase I Promoter Escape R-DDI-983231 Factors involved in megakaryocyte development and platelet production |
Names & Taxonomyi
Protein namesi | Recommended name: Histone H3.3 type cAlternative name(s): Histone 3, variant 3 type c |
Gene namesi | Name:H3c ORF Names:DDB_G0271092 |
Organismi | Dictyostelium discoideum (Slime mold) |
Taxonomic identifieri | 44689 [NCBI] |
Taxonomic lineagei | Eukaryota › Amoebozoa › Evosea › Eumycetozoa › Dictyostelids › Dictyosteliales › Dictyosteliaceae › Dictyostelium |
Proteomesi |
|
Organism-specific databases
dictyBasei | DDB_G0271092 H3c |
Subcellular locationi
- Nucleus
- Chromosome Note: Associated with pericentromeric heterochromatin.
GO - Cellular componenti
- nucleosome Source: UniProtKB-KW
- nucleus Source: dictyBase
Keywords - Cellular componenti
Chromosome, Nucleosome core, NucleusPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Initiator methioninei | RemovedBy similarity | |||
ChainiPRO_0000389162 | 2 – 136 | Histone H3.3 type cAdd BLAST | 135 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Modified residuei | 5 | N6,N6,N6-trimethyllysine; by set1; alternate1 Publication | 1 | |
Modified residuei | 5 | N6,N6-dimethyllysine; by set1; alternate1 Publication | 1 | |
Modified residuei | 5 | N6-acetyllysine; alternateBy similarity | 1 | |
Modified residuei | 5 | N6-methyllysine; by set1; alternate1 Publication | 1 | |
Modified residuei | 10 | N6,N6,N6-trimethyllysine; alternateBy similarity | 1 | |
Modified residuei | 10 | N6,N6-dimethyllysine; alternate1 Publication | 1 | |
Modified residuei | 10 | N6-acetyllysine; alternateBy similarity | 1 | |
Modified residuei | 10 | N6-methyllysine; alternateBy similarity | 1 | |
Modified residuei | 11 | PhosphoserineBy similarity | 1 | |
Modified residuei | 15 | N6-acetyllysineBy similarity | 1 | |
Modified residuei | 19 | N6-acetyllysine; alternateBy similarity | 1 | |
Modified residuei | 19 | N6-methyllysine; alternateBy similarity | 1 | |
Modified residuei | 24 | N6-acetyllysine; alternateBy similarity | 1 | |
Modified residuei | 24 | N6-methyllysine; alternateBy similarity | 1 | |
Modified residuei | 37 | N6,N6,N6-trimethyllysine; alternateBy similarity | 1 | |
Modified residuei | 37 | N6,N6-dimethyllysine; alternateBy similarity | 1 | |
Modified residuei | 37 | N6-acetyllysine; alternateBy similarity | 1 | |
Modified residuei | 37 | N6-methyllysine; alternateBy similarity | 1 | |
Modified residuei | 57 | N6-acetyllysineBy similarity | 1 | |
Modified residuei | 80 | N6,N6,N6-trimethyllysine; alternateBy similarity | 1 | |
Modified residuei | 80 | N6,N6-dimethyllysine; alternate1 Publication | 1 | |
Modified residuei | 80 | N6-methyllysine; alternateBy similarity | 1 |
Post-translational modificationi
Acetylation is generally linked to gene activation.By similarity
Different methylation states of H3K4 mark distinct developmental phases. H3K4me2 is associated with euchromatic regions. H3K4me3 is a mark of active chromatin. set1 is responsible for all mono-, di- and tri-methylation of H3K4. H3K4me facilitates subsequent acetylation of H3 and H4. Methylation at H3K9 is linked to gene repression (By similarity).By similarity
H3S10ph, which is linked to gene activation, prevents methylation at H3K9 but facilitates acetylation of H3 and H4.By similarity
Keywords - PTMi
Acetylation, Methylation, PhosphoproteinProteomic databases
PaxDbi | Q55BP0 |
PRIDEi | Q55BP0 |
PTM databases
iPTMneti | Q55BP0 |
Expressioni
Developmental stagei
Levels relative to total cellular protein, increase as differentiation proceeds towards the final culminant. The levels of tri-methylation of Lys-5 (H3K4me3) diminish considerably during the process of differentiation. In contrast, the level of mono-methylation of Lys-5 (H3K4me1) becomes significantly enhanced during differentiation. There is a slight dip in di-methylation of Lys-5 (H3K4me2) around the time of aggregation and the level of this mark again dips during the final stages of spore formation. The levels of H3K4me1 and H3K4me2 rise during the inactivation of rasG that occurs after the onset of differentiation. The level of dimethylation at this locus peaks coinciding with the loss of H3K4me3. This enrichment of dimethyl H3K4 declines as the rise in the level of H3K4me1 continues. H3K79me2 (di-methylation of Lys-80) is expressed during the whole life cycle.2 Publications
Interactioni
Subunit structurei
The nucleosome is a histone octamer containing two molecules each of H2A, H2B, H3 and H4 assembled in one H3-H4 heterotetramer and two H2A-H2B heterodimers. The octamer wraps approximately 147 bp of DNA (By similarity).
By similarityGO - Molecular functioni
- protein heterodimerization activity Source: InterPro
Protein-protein interaction databases
STRINGi | 44689.DDB0231141 |
Family & Domainsi
Sequence similaritiesi
Belongs to the histone H3 family.Curated
Phylogenomic databases
eggNOGi | KOG1745 Eukaryota COG2036 LUCA |
InParanoidi | Q55BP0 |
KOi | K11253 |
OMAi | GDANLCT |
PhylomeDBi | Q55BP0 |
Family and domain databases
Gene3Di | 1.10.20.10, 1 hit |
InterProi | View protein in InterPro IPR009072 Histone-fold IPR007125 Histone_H2A/H2B/H3 IPR000164 Histone_H3/CENP-A |
PANTHERi | PTHR11426 PTHR11426, 1 hit |
Pfami | View protein in Pfam PF00125 Histone, 1 hit |
PRINTSi | PR00622 HISTONEH3 |
SMARTi | View protein in SMART SM00428 H3, 1 hit |
SUPFAMi | SSF47113 SSF47113, 1 hit |
PROSITEi | View protein in PROSITE PS00959 HISTONE_H3_2, 1 hit |
i Sequence
Sequence statusi: Complete.
: The displayed sequence is further processed into a mature form. Sequence processingi
Q55BP0-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MARTKQTARK STGAKVPRKH LSSKSSFPSK PVNEVLKKTH RFRPGTVALR
60 70 80 90 100
EIRRYQKSSD LLIKKLPFQR LVREIAQEFK TDLRFQAAAI EALQEATEAY
110 120 130
LVGLFEDTNL CAIHAKRVTI MVKDIQLARR IRGERA
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AAFI02000005 Genomic DNA Translation: EAL72896.1 |
RefSeqi | XP_646791.1, XM_641699.1 |
Genome annotation databases
EnsemblProtistsi | EAL72896; EAL72896; DDB_G0271092 |
GeneIDi | 8617764 |
KEGGi | ddi:DDB_G0271092 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AAFI02000005 Genomic DNA Translation: EAL72896.1 |
RefSeqi | XP_646791.1, XM_641699.1 |
3D structure databases
SMRi | Q55BP0 |
ModBasei | Search... |
Protein-protein interaction databases
STRINGi | 44689.DDB0231141 |
PTM databases
iPTMneti | Q55BP0 |
Proteomic databases
PaxDbi | Q55BP0 |
PRIDEi | Q55BP0 |
Genome annotation databases
EnsemblProtistsi | EAL72896; EAL72896; DDB_G0271092 |
GeneIDi | 8617764 |
KEGGi | ddi:DDB_G0271092 |
Organism-specific databases
dictyBasei | DDB_G0271092 H3c |
Phylogenomic databases
eggNOGi | KOG1745 Eukaryota COG2036 LUCA |
InParanoidi | Q55BP0 |
KOi | K11253 |
OMAi | GDANLCT |
PhylomeDBi | Q55BP0 |
Enzyme and pathway databases
Reactomei | R-DDI-1266695 Interleukin-7 signaling R-DDI-2299718 Condensation of Prophase Chromosomes R-DDI-2559580 Oxidative Stress Induced Senescence R-DDI-3214841 PKMTs methylate histone lysines R-DDI-3214842 HDMs demethylate histones R-DDI-3214847 HATs acetylate histones R-DDI-3214858 RMTs methylate histone arginines R-DDI-3247509 Chromatin modifying enzymes R-DDI-73772 RNA Polymerase I Promoter Escape R-DDI-983231 Factors involved in megakaryocyte development and platelet production |
Miscellaneous databases
PROi | PR:Q55BP0 |
Family and domain databases
Gene3Di | 1.10.20.10, 1 hit |
InterProi | View protein in InterPro IPR009072 Histone-fold IPR007125 Histone_H2A/H2B/H3 IPR000164 Histone_H3/CENP-A |
PANTHERi | PTHR11426 PTHR11426, 1 hit |
Pfami | View protein in Pfam PF00125 Histone, 1 hit |
PRINTSi | PR00622 HISTONEH3 |
SMARTi | View protein in SMART SM00428 H3, 1 hit |
SUPFAMi | SSF47113 SSF47113, 1 hit |
PROSITEi | View protein in PROSITE PS00959 HISTONE_H3_2, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | H33C_DICDI | |
Accessioni | Q55BP0Primary (citable) accession number: Q55BP0 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | November 24, 2009 |
Last sequence update: | May 24, 2005 | |
Last modified: | October 16, 2019 | |
This is version 105 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) |
Miscellaneousi
Keywords - Technical termi
Complete proteome, Direct protein sequencing, Reference proteomeDocuments
- SIMILARITY comments
Index of protein domains and families - Dictyostelium discoideum
Dictyostelium discoideum: entries, gene names and cross-references to dictyBase