PRIM2
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Summary
PRIM2 (DNA primase subunit 2, HGNC:9370) is a protein-coding gene on chromosome 6p11.2, encoding DNA primase large subunit (P49643). Regulatory subunit of the DNA primase complex and component of the DNA polymerase alpha complex (also known as the alpha DNA polymerase-primase complex) which play an essential role in the initiation of DNA synthesis. It is a common-essential gene (DepMap: required in 100.0% of cancer cell lines).
This gene encodes the 58 kilodalton subunit of DNA primase, an enzyme that plays a key role in the replication of DNA. The encoded protein forms a heterodimer with a 49 kilodalton subunit. This heterodimer functions as a DNA-directed RNA polymerase to synthesize small RNA primers that are used to create Okazaki fragments on the lagging strand of the DNA. Alternative splicing of this gene results in multiple transcript variants. This gene has a related pseudogene, which is also present on chromosome 6.
Source: NCBI Gene 5558 — RefSeq curated summary.
At a glance
- GWAS associations: 6
- Clinical variants (ClinVar): 31 total
- Druggable target: yes
- Cancer dependency (DepMap): dependent in 100.0% of screened cell lines (common-essential)
- MANE Select transcript:
NM_000947
Identifiers
Gene identifiers
| Field | Value |
|---|---|
| HGNC ID | HGNC:9370 |
| Approved symbol | PRIM2 |
| Name | DNA primase subunit 2 |
| Location | 6p11.2 |
| Locus type | gene with protein product |
| Status | Approved |
| Ensembl gene | ENSG00000146143 |
| Ensembl biotype | protein_coding |
| OMIM | 176636 |
| Entrez | 5558 |
Gene structure
Transcript identifiers
Ensembl transcripts: 13 — 10 protein_coding, 2 protein_coding_CDS_not_defined, 1 retained_intron
ENST00000274891, ENST00000370687, ENST00000419977, ENST00000470638, ENST00000490313, ENST00000550475, ENST00000615550, ENST00000671770, ENST00000672107, ENST00000934977, ENST00000934978, ENST00000934979, ENST00000934980
RefSeq mRNA: 3 — MANE Select: NM_000947
NM_000947, NM_001282487, NM_001282488
CCDS: CCDS75476, CCDS75477
Canonical transcript exons
ENST00000615550 — 14 exons
| Exon | Start | End |
|---|---|---|
| ENSE00002425964 | 57537440 | 57537625 |
| ENSE00003713374 | 57606375 | 57606457 |
| ENSE00003719061 | 57532411 | 57532483 |
| ENSE00003719133 | 57382031 | 57382168 |
| ENSE00003722747 | 57645928 | 57646850 |
| ENSE00003727335 | 57507387 | 57507454 |
| ENSE00003734777 | 57379901 | 57379996 |
| ENSE00003735385 | 57632133 | 57632201 |
| ENSE00003735855 | 57320457 | 57320560 |
| ENSE00003738215 | 57324201 | 57324280 |
| ENSE00003745149 | 57325925 | 57326045 |
| ENSE00003749833 | 57601093 | 57601219 |
| ENSE00003751924 | 57318437 | 57318599 |
| ENSE00003844426 | 57317630 | 57317701 |
Expression profiles
Bgee: expression breadth ubiquitous, 179 present calls, max score 92.93.
FANTOM5 (CAGE): breadth ubiquitous, TPM avg 25.6502 / max 842.0722, expressed in 1795 samples.
FANTOM5 promoters (2 alternative TSS)
| Promoter ID | TPM avg | Samples expressed |
|---|---|---|
| 68338 | 25.1289 | 1795 |
| 68339 | 0.5213 | 252 |
Top tissues by expression
283 total, by Bgee expression score (0-100, higher = more expressed):
| Tissue | Anatomy ID | Expression score | Quality |
|---|---|---|---|
| buccal mucosa cell | CL:0002336 | 92.93 | silver quality |
| primordial germ cell in gonad | CL:0000670 ∩ UBERON:0000991 | 88.15 | gold quality |
| ganglionic eminence | UBERON:0004023 | 86.54 | gold quality |
| calcaneal tendon | UBERON:0003701 | 86.01 | gold quality |
| ventricular zone | UBERON:0003053 | 85.64 | gold quality |
| male germ line stem cell (sensu Vertebrata) in testis | CL:0000089 ∩ UBERON:0000473 | 84.93 | gold quality |
| oocyte | CL:0000023 | 84.75 | gold quality |
| colonic epithelium | UBERON:0000397 | 82.84 | gold quality |
| stromal cell of endometrium | CL:0002255 | 81.81 | gold quality |
| cortical plate | UBERON:0005343 | 80.54 | gold quality |
| rectum | UBERON:0001052 | 79.97 | gold quality |
| adrenal tissue | UBERON:0018303 | 79.61 | gold quality |
| sural nerve | UBERON:0015488 | 78.16 | gold quality |
| mucosa of transverse colon | UBERON:0004991 | 77.67 | gold quality |
| islet of Langerhans | UBERON:0000006 | 77.62 | gold quality |
| bone marrow cell | CL:0002092 | 77.49 | gold quality |
| leukocyte | CL:0000738 | 77.39 | gold quality |
| monocyte | CL:0000576 | 77.14 | gold quality |
| mononuclear cell | CL:0000842 | 77.05 | gold quality |
| lymph node | UBERON:0000029 | 76.82 | gold quality |
| body of uterus | UBERON:0009853 | 76.62 | gold quality |
| granulocyte | CL:0000094 | 76.47 | gold quality |
| smooth muscle tissue | UBERON:0001135 | 76.37 | gold quality |
| tibial artery | UBERON:0007610 | 76.21 | gold quality |
| popliteal artery | UBERON:0002250 | 76.20 | gold quality |
| muscle layer of sigmoid colon | UBERON:0035805 | 75.66 | gold quality |
| ectocervix | UBERON:0012249 | 75.60 | gold quality |
| transverse colon | UBERON:0001157 | 75.47 | gold quality |
| aorta | UBERON:0000947 | 75.44 | gold quality |
| prostate gland | UBERON:0002367 | 75.09 | gold quality |
Single-cell (SCXA)
Detected in 1 experiment(s), a significant marker in 1.
| Experiment | Marker? | Max mean expression |
|---|---|---|
| E-ANND-3 | yes | 5.33 |
Regulation
Is transcription factor: no
Upstream regulators (CollecTRI, top): E2F1, E2F4
miRNA regulators (miRDB)
58 targeting PRIM2, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):
| miRNA | Max score | Avg score | miRNA target_count |
|---|---|---|---|
| HSA-MIR-3613-3P | 100.00 | 76.36 | 7965 |
| HSA-MIR-4500 | 99.99 | 72.72 | 2367 |
| HSA-MIR-520D-5P | 99.98 | 73.34 | 4883 |
| HSA-MIR-524-5P | 99.98 | 73.43 | 4882 |
| HSA-MIR-548P | 99.98 | 72.25 | 3784 |
| HSA-MIR-1468-3P | 99.96 | 72.74 | 3797 |
| HSA-MIR-4487 | 99.96 | 64.58 | 1252 |
| HSA-MIR-10527-5P | 99.91 | 72.28 | 3754 |
| HSA-MIR-8063 | 99.91 | 69.76 | 3146 |
| HSA-MIR-1305 | 99.91 | 71.43 | 3443 |
| HSA-MIR-9902 | 99.89 | 69.15 | 2250 |
| HSA-MIR-8062 | 99.88 | 68.43 | 995 |
| HSA-MIR-6780A-5P | 99.88 | 66.69 | 2776 |
| HSA-MIR-4728-5P | 99.85 | 69.39 | 4718 |
| HSA-MIR-6785-5P | 99.82 | 68.68 | 4428 |
| HSA-MIR-489-3P | 99.80 | 66.46 | 839 |
| HSA-MIR-1273H-5P | 99.77 | 66.32 | 2471 |
| HSA-MIR-3913-3P | 99.74 | 66.53 | 938 |
| HSA-MIR-4677-5P | 99.70 | 70.09 | 1940 |
| HSA-MIR-30B-3P | 99.70 | 65.76 | 2325 |
| HSA-MIR-3689A-3P | 99.70 | 65.73 | 2306 |
| HSA-MIR-3689B-3P | 99.70 | 65.71 | 2311 |
| HSA-MIR-3689C | 99.70 | 65.71 | 2311 |
| HSA-MIR-6779-5P | 99.70 | 65.76 | 2363 |
| HSA-MIR-1283 | 99.69 | 72.42 | 3009 |
| HSA-MIR-4743-3P | 99.62 | 68.12 | 2095 |
| HSA-MIR-7159-5P | 99.53 | 72.12 | 2472 |
| HSA-MIR-7106-5P | 99.53 | 67.47 | 3574 |
| HSA-MIR-3915 | 99.45 | 68.49 | 1905 |
| HSA-MIR-330-3P | 99.41 | 69.95 | 2521 |
Functional genomics
DepMap (CRISPR cell-line fitness): dependent in 100.0% of screened cell lines, common-essential.
Literature-anchored findings (GeneRIF, showing 10)
- analysis of the iron-sulfur cluster in the C-terminal domain of the p58 subunit of human DNA primase (PMID:17893144)
- p58C(C-terminal regulatory domain of the large subunit) structure reveals a novel arrangement of an evolutionarily conserved 4Fe-4S cluster buried deeply within the protein core and is not similar to any known protein structure. (PMID:20643958)
- The fragment that forms a beta-sheet in the reported structure p58C/3L9Q of the same human primase domain is folded in three alpha-helices in our p58C/3Q36 structure, similarly to yeast primase. (PMID:21346410)
- PRIM2 gene is not imprinted in the placenta. (PMID:22437878)
- the N-terminal domain of the large subunit of primase (p58N) directly interacts with the C-terminal domain of the catalytic subunit of polalpha (p180C) (PMID:24962573)
- Data indicate that the conformational changes in primase are necessary to accomplish the initiation and then elongation of RNA synthesis. (PMID:25550159)
- Data suggest that PRIM1-p58,C-terminal domain stays bound to initiating NTP and 3prime-overhang DNA during whole cycle of RNA primer synthesis; meanwhile, PRIM1-p49 slides along DNA template toward 5prime-end with PRIM1-p58,N-terminal domain attached. (PMID:26710848)
- Study results show that although human DNA primase C-terminal domain (p58C) can be stabilized in different conformations in the crystalline state, in solution there is effectively no difference in the structure and functional properties of p58C constructs of different lengths. (PMID:30562384)
- Genetic variants of CHEK1, PRIM2 and CDK6 in the mitotic phase-related pathway are associated with nonsmall cell lung cancer survival. (PMID:34058013)
- PRIM2: A Marker of MYC-driven Hyper-proliferation, Disease Progression, Tumor Aggressiveness and Poor Survival in Glioma Patients. (PMID:38423596)
Cross-species orthologs
5 orthologs
| Organism | Symbol | Gene ID |
|---|---|---|
| danio_rerio | prim2 | ENSDARG00000052721 |
| mus_musculus | Prim2 | ENSMUSG00000026134 |
| rattus_norvegicus | Prim2 | ENSRNOG00000012486 |
| drosophila_melanogaster | Prim2 | FBGN0259676 |
| caenorhabditis_elegans | pri-2 | WBGENE00004181 |
Protein
Protein identifiers
DNA primase large subunit — P49643 (reviewed: P49643)
Alternative names: DNA primase 58 kDa subunit
All UniProt accessions (4): P49643, A0A096LP51, A0A5F9ZHR0, A0A5F9ZHU7
UniProt curated annotations — full annotation on UniProt →
Function. Regulatory subunit of the DNA primase complex and component of the DNA polymerase alpha complex (also known as the alpha DNA polymerase-primase complex) which play an essential role in the initiation of DNA synthesis. During the S phase of the cell cycle, the DNA polymerase alpha complex (composed of a catalytic subunit POLA1, an accessory subunit POLA2 and two primase subunits, the catalytic subunit PRIM1 and the regulatory subunit PRIM2) is recruited to DNA at the replicative forks via direct interactions with MCM10 and WDHD1. The primase subunit of the polymerase alpha complex initiates DNA synthesis by oligomerising short RNA primers on both leading and lagging strands. These primers are initially extended by the polymerase alpha catalytic subunit and subsequently transferred to polymerase delta and polymerase epsilon for processive synthesis on the lagging and leading strand, respectively. In the primase complex, both subunits are necessary for the initial di-nucleotide formation, but the extension of the primer depends only on the catalytic subunit. Binds RNA:DNA duplex and coordinates the catalytic activities of PRIM1 and POLA2 during primase-to-polymerase switch.
Subunit / interactions. Heterodimer of a catalytic subunit PRIM1 and a regulatory subunit PRIM2, also known as the DNA primase complex. Interacts via (C-terminus) with PRIM1. Component of the alpha DNA polymerase complex (also known as the alpha DNA polymerase-primase complex) consisting of four subunits: the catalytic subunit POLA1, the regulatory subunit POLA2, and the primase complex subunits PRIM1 and PRIM2 respectively. Within the complex, POLA1 directly interacts with PRIM2.
Cofactor. Binds 1 [4Fe-4S] cluster.
Domain organisation. The RNA:DNA duplex-binding domain interacts with the template phosphates at positions -2, -1, 1, and 2 positioning its bases -1, 1, and 2 for duplex formation. Interacts only with the beta- and gamma-phosphates of triphosphate moiety of initiating NTP of the primer. The side chain of His-303 mimics a RNA base that would be paired with the template nucleotide at position -1 via a hydrogen bond, thereby facilitating the stacking of the initiating NTP. In the initiating primosome a ‘mini RNA:DNA’ duplex is formed comprising three template nucleotides at positions -1, 1, and 2 on one strand and His-303, initiating NTP, and incoming NTP on the other strand. The interdomain linker provides flexibility in movement relative to primosome platform composed of PRIM1, the N-terminus of PRIM2, the C-terminus of POLA1 and POLA2. Together with POLA1 interdomain linker, allows for large-scale conformational changes of primosome and coordinated autoregulation of catalytic centers of PRIM1 and POLA1. It is proposed to move the C-terminus of PRIM2 close to PRIM1 during initiation, then move it away with the 5’-end of the nascent primer during elongation. The steric hindrance between the N- and C-terminus of PRIM2 as the RNA primer is elongated limits its length to 9 nucleotides. Ultimately a large rotation of the C-terminus of PRIM2 transfers the primer to POLA1 active site for DNA synthesis.
Similarity. Belongs to the eukaryotic-type primase large subunit family.
Isoforms (2)
| UniProt ID | Names | Canonical? |
|---|---|---|
| P49643-1 | 1 | yes |
| P49643-2 | 2 |
RefSeq proteins (3): NP_000938, NP_001269416, NP_001269417 (=MANE)
Domains & families (InterPro)
| ID | Name | Type |
|---|---|---|
| IPR007238 | DNA_primase_lsu_euk/arc | Family |
| IPR016558 | DNA_primase_lsu_euk | Family |
| IPR058560 | DNA_primase_C | Domain |
Pfam: PF04104, PF26466
Enzyme classification (BRENDA):
- EC 2.7.7.102 — DNA primase AEP (BRENDA: 9 organisms, 25 substrates, 3 inhibitors, 8 Km, 5 kcat entries)
Substrate kinetics (BRENDA)
5 substrates with measured Km, best-characterized 5. Km ranges are aggregated across organisms/conditions.
| Substrate | Km (mM) | Measurements |
|---|---|---|
| DNTP | 5–198 | 3 |
| 5’-CTTCTTCTGTGC-3’ | 0.2 | 1 |
| ATP | 0.15 | 1 |
| DATP | 0.032 | 1 |
| NTP | 27.5 | 1 |
UniProt features (66 total): helix 23, strand 12, sequence variant 7, mutagenesis site 5, region of interest 4, turn 4, binding site 4, sequence conflict 3, splice variant 2, chain 1, modified residue 1
Structure
Experimental structures (PDB)
22 structures.
| PDB | Method | Resolution (Å) |
|---|---|---|
| 3L9Q | X-RAY DIFFRACTION | 1.7 |
| 5I7M | X-RAY DIFFRACTION | 1.93 |
| 6DHW | X-RAY DIFFRACTION | 2.01 |
| 5F0Q | X-RAY DIFFRACTION | 2.21 |
| 5DQO | X-RAY DIFFRACTION | 2.3 |
| 3Q36 | X-RAY DIFFRACTION | 2.5 |
| 4RR2 | X-RAY DIFFRACTION | 2.65 |
| 4BPU | X-RAY DIFFRACTION | 2.7 |
| 8VY3 | ELECTRON MICROSCOPY | 2.98 |
| 5F0S | X-RAY DIFFRACTION | 3 |
| 4BPW | X-RAY DIFFRACTION | 3 |
| 8QJ7 | ELECTRON MICROSCOPY | 3.07 |
| 8D96 | ELECTRON MICROSCOPY | 3.35 |
| 9C8V | ELECTRON MICROSCOPY | 3.39 |
| 4BPX | X-RAY DIFFRACTION | 3.4 |
| 8B9D | ELECTRON MICROSCOPY | 3.4 |
| 8D0B | ELECTRON MICROSCOPY | 3.43 |
| 8D9D | ELECTRON MICROSCOPY | 3.59 |
| 5EXR | X-RAY DIFFRACTION | 3.6 |
| 7OPL | ELECTRON MICROSCOPY | 4.12 |
| 8D0K | ELECTRON MICROSCOPY | 4.27 |
| 7U5C | ELECTRON MICROSCOPY | 4.6 |
Predicted structure (AlphaFold)
| Model | pLDDT | Fraction very-high |
|---|---|---|
| AF-P49643-F1 | 81.11 | 0.49 |
Functional residue map
Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.
Ligand- & substrate-binding residues (4): 287; 367; 384; 424
Post-translational modifications (1): 470
Mutagenesis-validated functional residues (5):
| Position | Phenotype |
|---|---|
| 97 | decreases primase affinity for pola1 by 10-fold. |
| 104 | decreases primase affinity for pola1 by 40-fold. |
| 107 | decreases primase affinity for pola1 by 30-fold. |
| 108 | decreases primase affinity for pola1 by 40-fold. |
| 256–270 | decreases rna primer di-nucleotide formation about 5-fold. does not affect the ratio between the di-nucleotide and its e |
Function
Pathways and Gene Ontology
Reactome pathways
9 pathways
| ID | Pathway |
|---|---|
| R-HSA-113501 | Inhibition of replication initiation of damaged DNA by RB1/E2F1 |
| R-HSA-174411 | Polymerase switching on the C-strand of the telomere |
| R-HSA-174430 | Telomere C-strand synthesis initiation |
| R-HSA-68952 | DNA replication initiation |
| R-HSA-68962 | Activation of the pre-replicative complex |
| R-HSA-69091 | Polymerase switching |
| R-HSA-69166 | Removal of the Flap Intermediate |
| R-HSA-69183 | Processive synthesis on the lagging strand |
| R-HSA-9710421 | Defective pyroptosis |
MSigDB gene sets: 291 (showing top):
REACTOME_INHIBITION_OF_REPLICATION_INITIATION_OF_DAMAGED_DNA_BY_RB1_E2F1, REACTOME_DNA_REPLICATION, RODRIGUES_THYROID_CARCINOMA_ANAPLASTIC_UP, WALLACE_PROSTATE_CANCER_RACE_UP, MORF_MSH3, PAL_PRMT5_TARGETS_UP, MORF_BRCA1, GRAESSMANN_APOPTOSIS_BY_DOXORUBICIN_DN, ACEVEDO_LIVER_CANCER_WITH_H3K27ME3_UP, MORF_RAD51L3, GOLDRATH_ANTIGEN_RESPONSE, PATIL_LIVER_CANCER, WEI_MYCN_TARGETS_WITH_E_BOX, GOCC_NUCLEAR_REPLICATION_FORK, LI_WILMS_TUMOR_VS_FETAL_KIDNEY_1_DN
GO Biological Process (3): DNA replication, synthesis of primer (GO:0006269), DNA replication initiation (GO:0006270), DNA replication (GO:0006260)
GO Molecular Function (7): DNA binding (GO:0003677), metal ion binding (GO:0046872), 4 iron, 4 sulfur cluster binding (GO:0051539), DNA/RNA hybrid binding (GO:0071667), DNA-directed RNA polymerase activity (GO:0003899), protein binding (GO:0005515), iron-sulfur cluster binding (GO:0051536)
GO Cellular Component (2): nucleoplasm (GO:0005654), alpha DNA polymerase:primase complex (GO:0005658)
Reactome top-level categories
Rollup of top-9 pathways:
| Category | Pathways |
|---|---|
| Telomere C-strand (Lagging Strand) Synthesis | 2 |
| Lagging Strand Synthesis | 2 |
| E2F mediated regulation of DNA replication | 1 |
| Synthesis of DNA | 1 |
| DNA Replication Pre-Initiation | 1 |
| G1/S Transition | 1 |
| Leading Strand Synthesis | 1 |
| Processive synthesis on the lagging strand | 1 |
| Diseases of programmed cell death | 1 |
GO top-level categories
Rollup of top GO terms by namespace:
| Category | Terms |
|---|---|
| DNA-templated DNA replication | 2 |
| RNA biosynthetic process | 2 |
| DNA metabolic process | 2 |
| nucleic acid binding | 2 |
| DNA biosynthetic process | 1 |
| cation binding | 1 |
| iron-sulfur cluster binding | 1 |
| 5’-3’ RNA polymerase activity | 1 |
| binding | 1 |
| metal cluster binding | 1 |
| nuclear lumen | 1 |
| cellular anatomical structure | 1 |
| DNA polymerase complex | 1 |
| nuclear replisome | 1 |
| nuclear DNA-directed RNA polymerase complex | 1 |
Protein interactions and networks
STRING
2134 interactions, top by confidence (×1000):
| Protein A | Protein B | Partner UniProt | Score |
|---|---|---|---|
| PRIM2 | PRIM1 | P49642 | 999 |
| PRIM2 | POLA2 | Q14181 | 998 |
| PRIM2 | POLA1 | P09884 | 991 |
| PRIM2 | POLD1 | P28340 | 747 |
| PRIM2 | POLE2 | P56282 | 649 |
| PRIM2 | POLE3 | Q9NRF9 | 632 |
| PRIM2 | RNASEH2A | O75792 | 610 |
| PRIM2 | MCM4 | P33991 | 593 |
| PRIM2 | RFC3 | P40938 | 572 |
| PRIM2 | CDC45 | O75419 | 561 |
| PRIM2 | POLD2 | P49005 | 561 |
| PRIM2 | DNA2 | P51530 | 559 |
| PRIM2 | CCNB1 | P14635 | 551 |
| PRIM2 | WDHD1 | O75717 | 532 |
| PRIM2 | MCM10 | Q7L590 | 532 |
IntAct
93 interactions, top by confidence:
| A | B | Type | Score |
|---|---|---|---|
| MMS19 | CIAO1 | psi-mi:“MI:0914”(association) | 0.910 |
| CDK8 | MED19 | psi-mi:“MI:2364”(proximity) | 0.850 |
| RFXANK | RFXAP | psi-mi:“MI:0914”(association) | 0.780 |
| BTF3L4 | TXLNA | psi-mi:“MI:0914”(association) | 0.780 |
| PRIM1 | PRIM2 | psi-mi:“MI:0915”(physical association) | 0.740 |
| MMS19 | ERCC2 | psi-mi:“MI:0914”(association) | 0.690 |
| PRPS2 | PRPSAP2 | psi-mi:“MI:0914”(association) | 0.670 |
| rep | POLA1 | psi-mi:“MI:0914”(association) | 0.670 |
| PRIM1 | POLA1 | psi-mi:“MI:0914”(association) | 0.640 |
| QPRT | PIK3C2A | psi-mi:“MI:0914”(association) | 0.640 |
| POLA1 | PRIM1 | psi-mi:“MI:0914”(association) | 0.640 |
| PRIM2 | RECK | psi-mi:“MI:0915”(physical association) | 0.560 |
| PRIM2 | SPRED1 | psi-mi:“MI:0915”(physical association) | 0.560 |
| ERP44 | MEX3A | psi-mi:“MI:0914”(association) | 0.530 |
| RNF31 | GBP1 | psi-mi:“MI:0914”(association) | 0.530 |
| rep | POLA1 | psi-mi:“MI:0914”(association) | 0.530 |
| SLC31A1 | C2orf72 | psi-mi:“MI:0914”(association) | 0.530 |
| POLR3H | POLR3A | psi-mi:“MI:0914”(association) | 0.530 |
| PM20D2 | PRIM2 | psi-mi:“MI:0914”(association) | 0.530 |
| BTF3L4 | PRIM1 | psi-mi:“MI:0914”(association) | 0.530 |
| MAD2L1 | PPIP5K2 | psi-mi:“MI:0914”(association) | 0.530 |
BioGRID (154): PRIM2 (Affinity Capture-RNA), PRIM2 (Affinity Capture-MS), PRIM2 (Affinity Capture-Western), PRIM2 (Affinity Capture-MS), PRIM2 (Affinity Capture-MS), PRIM2 (Affinity Capture-MS), PRIM2 (Affinity Capture-MS), PRIM2 (Affinity Capture-MS), PRIM2 (Affinity Capture-MS), PRIM2 (Affinity Capture-MS), PRIM2 (Affinity Capture-MS), PRIM2 (Proximity Label-MS), PRIM2 (Affinity Capture-MS), PRIM2 (Affinity Capture-MS), PRIM2 (Affinity Capture-MS)
ESM2 similar proteins: A7TTC4, A8XAA9, O02328, O02334, O14215, O74516, O74761, O74927, O81395, O89044, P09810, P09880, P10363, P17290, P17532, P20457, P20664, P33610, P33755, P34466, P34529, P38025, P40383, P49643, P51820, Q0W2J3, Q10313, Q24317, Q2KIH7, Q2QRX6, Q55BM5, Q5F408, Q6DJ95, Q6FWT4, Q6PA41, Q756A7, Q7ZWR2, Q84WJ2, Q8NIZ4, Q8RWT8
Diamond homologs: O02334, O74761, O89044, P20457, P33610, P49643, Q55BM5, Q84WJ2, Q9VPH2, Q8NIZ4, Q97BA1, Q0W2J3, Q12U19, Q8TVJ5, Q9HJD1
SIGNOR signaling
3 interactions.
| A | Effect | B | Mechanism |
|---|---|---|---|
| clofarabine | “down-regulates activity” | PRIM2 | “chemical inhibition” |
| PRIM2 | “form complex” | “DNA primase complex” | binding |
| “iron-sulfur cluster” | “up-regulates activity” | PRIM2 | “chemical activation” |
Disease & clinical
Clinical variants and AI predictions
ClinVar
31 variants total. Per-class counts are floors (≥ shown; pagination cap):
| Classification | Count (floor) |
|---|---|
| Pathogenic | 0 |
| Likely pathogenic | 0 |
| Uncertain significance | 0 |
| Likely benign | 0 |
| Benign | 0 |
Top pathogenic / likely-pathogenic (0)
SpliceAI
2039 predictions. Top by Δscore:
| Variant | Effect | Δscore |
|---|---|---|
| 6:57320452:TTTA:T | acceptor_loss | 1.0000 |
| 6:57320453:TTA:T | acceptor_loss | 1.0000 |
| 6:57320455:A:AG | acceptor_gain | 1.0000 |
| 6:57320455:A:T | acceptor_loss | 1.0000 |
| 6:57320455:AGT:A | acceptor_gain | 1.0000 |
| 6:57320456:G:A | acceptor_loss | 1.0000 |
| 6:57320456:G:GG | acceptor_gain | 1.0000 |
| 6:57320456:GT:G | acceptor_gain | 1.0000 |
| 6:57320456:GTG:G | acceptor_gain | 1.0000 |
| 6:57320456:GTGT:G | acceptor_gain | 1.0000 |
| 6:57320456:GTGTT:G | acceptor_gain | 1.0000 |
| 6:57320556:ACAGA:A | donor_gain | 1.0000 |
| 6:57320557:CAGA:C | donor_gain | 1.0000 |
| 6:57320558:AGA:A | donor_gain | 1.0000 |
| 6:57320559:GA:G | donor_gain | 1.0000 |
| 6:57320559:GAG:G | donor_gain | 1.0000 |
| 6:57320560:AG:A | donor_loss | 1.0000 |
| 6:57320561:G:GG | donor_gain | 1.0000 |
| 6:57320561:GT:G | donor_loss | 1.0000 |
| 6:57324183:T:G | acceptor_gain | 1.0000 |
| 6:57324199:A:G | acceptor_gain | 1.0000 |
| 6:57324200:G:GG | acceptor_gain | 1.0000 |
| 6:57324200:G:GT | acceptor_loss | 1.0000 |
| 6:57324276:CAGTC:C | donor_gain | 1.0000 |
| 6:57324278:GTC:G | donor_gain | 1.0000 |
| 6:57324281:G:GG | donor_gain | 1.0000 |
| 6:57325918:A:AG | acceptor_gain | 1.0000 |
| 6:57325920:TTCA:T | acceptor_loss | 1.0000 |
| 6:57325921:TCAGT:T | acceptor_loss | 1.0000 |
| 6:57325922:CA:C | acceptor_loss | 1.0000 |
AlphaMissense
3381 scored. Top likely-pathogenic:
| Variant | Protein change | am_pathogenicity |
|---|---|---|
| 6:57325966:T:C | L127P | 1.000 |
| 6:57537464:T:C | C287R | 1.000 |
| 6:57537503:C:G | H300D | 1.000 |
| 6:57537522:G:C | R306P | 1.000 |
| 6:57537547:G:C | K314N | 1.000 |
| 6:57537547:G:T | K314N | 1.000 |
| 6:57537572:G:C | A323P | 1.000 |
| 6:57537584:T:A | W327R | 1.000 |
| 6:57537584:T:C | W327R | 1.000 |
| 6:57601120:C:A | R350S | 1.000 |
| 6:57601121:G:C | R350P | 1.000 |
| 6:57601123:C:G | H351D | 1.000 |
| 6:57601133:G:A | G354E | 1.000 |
| 6:57601133:G:T | G354V | 1.000 |
| 6:57601142:G:A | G357D | 1.000 |
| 6:57601171:T:C | C367R | 1.000 |
| 6:57606377:T:C | C384R | 1.000 |
| 6:57632170:C:A | A423D | 1.000 |
| 6:57318582:C:A | A46D | 0.999 |
| 6:57318591:G:C | R49T | 0.999 |
| 6:57318591:G:T | R49I | 0.999 |
| 6:57318592:A:C | R49S | 0.999 |
| 6:57318592:A:T | R49S | 0.999 |
| 6:57320460:T:C | L53S | 0.999 |
| 6:57320469:T:A | V56D | 0.999 |
| 6:57324246:T:C | S102P | 0.999 |
| 6:57324249:C:G | H103D | 0.999 |
| 6:57324252:T:C | F104L | 0.999 |
| 6:57324254:T:A | F104L | 0.999 |
| 6:57324254:T:G | F104L | 0.999 |
dbSNP variants (sampled 300 via entrez): RS1000004170 (6:57383656 G>T), RS1000006515 (6:57221885 C>G), RS1000010060 (6:57334781 A>T), RS1000031441 (6:57291632 A>T), RS1000078177 (6:57335897 G>A), RS1000093833 (6:57221724 A>C,G), RS1000109874 (6:57339525 A>G), RS1000117104 (6:57266252 G>A), RS1000139224 (6:57269549 G>C), RS1000146286 (6:57456696 T>A,G), RS1000178355 (6:57240229 G>A), RS1000191351 (6:57351692 A>G), RS1000197449 (6:57420519 A>G), RS1000218098 (6:57317561 C>A), RS1000219406 (6:57435821 T>C)
Disease associations
OMIM: gene MIM:176636 | disease phenotypes:
GenCC curated gene-disease
Mondo (0):
Orphanet (0):
HPO phenotypes
0 total (0 of 0 shown, HPO-id order):
GWAS associations
6 associations (top):
| Study | Trait | p-value |
|---|---|---|
| GCST002444_3 | Plasma omega-6 polyunsaturated fatty acid levels (dihomo-gamma-linolenic acid) | 4.000000e-06 |
| GCST005752_153 | Systemic lupus erythematosus | 6.000000e-07 |
| GCST007576_278 | Chronotype | 8.000000e-13 |
| GCST010866_114 | Coronary artery disease | 2.000000e-17 |
| GCST011365_98 | Myocardial infarction | 7.000000e-08 |
| GCST011494_31 | Daytime nap | 8.000000e-13 |
EFO canonical traits (3, from GWAS)
| EFO ID | Trait name |
|---|---|
| EFO:0005680 | omega-6 polyunsaturated fatty acid measurement |
| EFO:0008328 | chronotype measurement |
| EFO:0007828 | daytime rest measurement |
Drugs & pharmacology
Drug and pharmacology data
Is drug target: yes
ChEMBL targets (1): CHEMBL2363042 (PROTEIN FAMILY)
PharmGKB: 1 entry (VIP=true, CPIC=false)
CTD chemical–gene interactions
61 total (human), top 30 by PubMed support.
| Chemical | Actions (top 5) | PubMed papers |
|---|---|---|
| Benzo(a)pyrene | decreases expression, increases expression | 4 |
| bisphenol A | affects cotreatment, increases methylation, decreases expression, decreases methylation, increases expression | 3 |
| manganese chloride | increases expression, decreases expression, increases abundance | 2 |
| 4-(5-benzo(1,3)dioxol-5-yl-4-pyridin-2-yl-1H-imidazol-2-yl)benzamide | affects cotreatment, decreases expression | 2 |
| Manganese | increases abundance, increases expression, decreases expression | 2 |
| Phenylmercuric Acetate | affects cotreatment, decreases expression | 2 |
| Tobacco Smoke Pollution | affects expression, increases expression | 2 |
| Valproic Acid | increases expression | 2 |
| Cyclosporine | decreases expression | 2 |
| bisphenol F | affects cotreatment, increases expression | 1 |
| TAK-243 | increases sumoylation | 1 |
| dicrotophos | decreases expression | 1 |
| triphenyl phosphate | affects expression | 1 |
| 2,2’-methylenebis(4-methyl-6-tert-butylphenol) | affects expression, affects response to substance | 1 |
| VX-agent | increases expression | 1 |
| trichostatin A | increases expression | 1 |
| tris(1,3-dichloro-2-propyl)phosphate | decreases expression | 1 |
| sodium arsenite | increases expression, increases abundance | 1 |
| potassium chromate(VI) | affects cotreatment, decreases expression | 1 |
| 2,3-bis(3’-hydroxybenzyl)butyrolactone | affects cotreatment, increases expression | 1 |
| epigallocatechin gallate | affects cotreatment, decreases expression | 1 |
| 2,3,5-(triglutathion-S-yl)hydroquinone | increases ADP-ribosylation | 1 |
| K 7174 | decreases expression | 1 |
| ICG 001 | increases expression | 1 |
| abrine | decreases expression | 1 |
| dorsomorphin | affects cotreatment, decreases expression | 1 |
| bisphenol S | increases expression, affects cotreatment | 1 |
| LDN 193189 | affects cotreatment, decreases expression | 1 |
| NSC668394 | increases expression | 1 |
| Dasatinib | decreases expression | 1 |
Clinical trials (associated diseases)
0 trials via MONDO — disease-level, not drug-specific.
Related Atlas pages
No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.