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POLD4 protein (Arabidopsis thaliana) - STRING interaction network
"POLD4" - Polymerase delta 4 in Arabidopsis thaliana
Network nodes represent proteins
splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
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colored nodes:
query proteins and first shell of interactors
white nodes:
second shell of interactors
Node Content
empty nodes:
proteins of unknown 3D structure
filled nodes:
some 3D structure is known or predicted
Edges represent protein-protein associations
associations are meant to be specific and meaningful, i.e. proteins jointly contribute to a shared function; this does not necessarily mean they are physically binding each other.
Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
protein homology
Your Input:
Gene Fusion
POLD4Polymerase delta 4 (POLD4); Its function is described as DNA-directed DNA polymerase activity; Involved in DNA replication; Located in nucleus; Expressed in 24 plant structures; Expressed during 15 growth stages; Contains the following InterPro domains- DNA polymerase delta, subunit 4 (InterPro-IPR007218); Has 212 Blast hits to 212 proteins in 91 species- Archae - 0; Bacteria - 0; Metazoa - 52; Fungi - 86; Plants - 65; Viruses - 0; Other Eukaryotes - 9 (source- NCBI BLink) (124 aa)    
Predicted Functional Partners:
DNA-directed DNA polymerases; Similar to DNA polymerase delta (POLD3), which in other organism was shown to be involved in the elongation of DNA replication (509 aa)
DNA polymerase delta small subunit; The function of the small subunit is not yet clear (441 aa)
DNA polymerase delta catalytic subunit; This polymerase possesses two enzymatic activities- DNA synthesis (polymerase) and an exonucleolytic activity that degrades single-stranded DNA in the 3’- to 5’-direction (1112 aa)
Encodes a protein with similarity to DNA polymerase epsilon catalytic subunit. Based on yeast two hybrid analysis, not predicted to be a subunit of the DNA polymerase epsilon complex. No phenotype observed in homozygous mutant embryos or plants but in combination with TIL1-1/til1-1 heterozygotes arrest earlier than til1 homozygotes suggesting TIL2 functions redundantly with TIL1 (2138 aa)
DNA polymerase epsilon catalytic subunit A; DNA polymerase II, which participates in chromosomal DNA replication. Required for the timing and determination of cell fate during plant embryogenesis and root pole development, by promoting cell cycle and cell type patterning. Necessary for proper shoot (SAM) and root apical meristem (RAM) functions. Involved in maintaining epigenetic states, controlling hypersensitive response (HR), and mediating abscisic acid (ABA) signaling. Required for flowering repression through a mechanism involving epigenetic gene silencing. May participate in proc [...] (2161 aa)
Encodes the putative catalytic subunit of the DNA polymerase alpha. Interacts with genes involved in chromatin-mediated cellular memory. ICU2 genetically interacts with TERMINAL FLOWER2, the ortholog of HETEROCHROMATIN PROTEIN1 of animals and yeasts, and with the Polycomb group (PcG) gene CURLY LEAF. A number of regulatory genes were derepressed in the icu2-1 mutant, including genes associated with flowering time, floral meristem, and floral organ identity. Mutant has curled, involute leaves and causes early flowering (1524 aa)
Proliferating cell nuclear antigen 2; This protein is an auxiliary protein of DNA polymerase delta and is involved in the control of eukaryotic DNA replication by increasing the polymerase’s processibility during elongation of the leading strand (By similarity). May be involved in UV resistance; Belongs to the PCNA family (264 aa)
Proliferating cellular nuclear antigen 1; This protein is an auxiliary protein of DNA polymerase delta and is involved in the control of eukaryotic DNA replication by increasing the polymerase’s processibility during elongation of the leading strand; Belongs to the PCNA family (263 aa)
DNA polymerase alpha subunit B; May play an essential role at the early stage of chromosomal DNA replication by coupling the polymerase alpha/primase complex to the cellular replication machinery (620 aa)
Probable DNA primase large subunit; DNA primase is the polymerase that synthesizes small RNA primers for the Okazaki fragments made during discontinuous DNA replication; Belongs to the eukaryotic-type primase large subunit family (490 aa)
Your Current Organism:
Arabidopsis thaliana
NCBI taxonomy Id: 3702
Other names: A. thaliana, Arabidopsis thaliana, Arabidopsis thaliana (L.) Heynh., mouse-ear cress, thale cress, thale-cress
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