COMPREHENSIVE CROSS-DATABASE IDENTIFIER AND FUNCTIONAL MAPPING REFERENCE
Human CDK4 (Cyclin Dependent Kinase 4)
Section 1: Gene Identifiers
| Database | Identifier | Notes |
|---|
| HGNC ID | HGNC:1773 | Approved |
| HGNC Symbol | CDK4 | Approved symbol |
| Full Name | cyclin dependent kinase 4 | |
| Ensembl Gene | ENSG00000135446 | |
| NCBI Entrez Gene | 1019 | |
| OMIM | 123829 | Gene/locus |
| Locus Type | protein-coding gene | |
| Gene Groups | Cyclin dependent kinases, MicroRNA protein coding host genes | |
| Aliases | PSK-J3, CMM3 | |
Genomic Location
| Attribute | Value |
|---|
| Chromosome | 12 |
| Cytogenetic Band | 12q14.1 |
| Start Position | 57,747,722 |
| End Position | 57,756,013 |
| Strand | Minus (-) |
| Genomic Accession | NC_000012.12 |
| Genome Build | GRCh38 |
Section 2: Transcript Identifiers
Ensembl Transcripts (Total: 18)
| Transcript ID | Biotype | Start | End | Strand |
|---|
| ENST00000257904 ★ | protein_coding | 57,747,727 | 57,752,310 | - |
| ENST00000546489 | protein_coding | 57,748,591 | 57,752,322 | - |
| ENST00000547281 | protein_coding | 57,749,220 | 57,752,276 | - |
| ENST00000547853 | protein_coding | 57,751,712 | 57,752,115 | - |
| ENST00000549606 | protein_coding | 57,748,426 | 57,752,353 | - |
| ENST00000550419 | nonsense_mediated_decay | 57,749,234 | 57,752,295 | - |
| ENST00000551706 | retained_intron | 57,750,827 | 57,752,364 | - |
| ENST00000551800 | protein_coding | 57,750,669 | 57,752,349 | - |
| ENST00000551888 | protein_coding_CDS_not_defined | 57,749,191 | 57,752,333 | - |
| ENST00000552254 | protein_coding | 57,750,679 | 57,751,877 | - |
| ENST00000552388 | protein_coding | 57,750,934 | 57,752,322 | - |
| ENST00000552713 | retained_intron | 57,748,411 | 57,749,795 | - |
| ENST00000552862 | protein_coding | 57,751,215 | 57,756,013 | - |
| ENST00000553237 | nonsense_mediated_decay | 57,748,520 | 57,752,326 | - |
| ENST00000918532 | protein_coding | 57,747,722 | 57,752,388 | - |
| ENST00000918533 | protein_coding | 57,748,220 | 57,752,373 | - |
| ENST00000918534 | protein_coding | 57,748,244 | 57,752,364 | - |
| ENST00000918535 | protein_coding | 57,748,244 | 57,752,330 | - |
★ = Canonical transcript
RefSeq Transcripts
| Accession | Type | Status | MANE Select |
|---|
| NM_000075 | mRNA | REVIEWED | ★ Yes (Canonical) |
| NP_000066 | protein | REVIEWED | ★ Yes |
CCDS
Exons for Canonical Transcript (ENST00000257904)
Total Exon Count: 8
| Exon ID | Start | End | Strand |
|---|
| ENSE00002374522 | 57,752,175 | 57,752,310 | - |
| ENSE00003486099 | 57,751,207 | 57,751,342 | - |
| ENSE00003593565 | 57,751,500 | 57,751,736 | - |
| ENSE00003497990 | 57,750,923 | 57,751,090 | - |
| ENSE00003465926 | 57,750,656 | 57,750,765 | - |
| ENSE00003458939 | 57,749,182 | 57,749,317 | - |
| ENSE00003676150 | 57,749,454 | 57,749,504 | - |
| ENSE00001141069 | 57,747,727 | 57,748,617 | - |
Section 3: Protein Identifiers
UniProt Accessions (Total: 10)
| Accession | Name | Status |
|---|
| P11802 ★ | Cyclin-dependent kinase 4 | Reviewed (Swiss-Prot) |
| F8VTV8 | | Unreviewed |
| F8VWX7 | | Unreviewed |
| F8VXD2 | | Unreviewed |
| F8VYH9 | | Unreviewed |
| F8VYY1 | | Unreviewed |
| F8VZ13 | | Unreviewed |
| F8VZ51 | | Unreviewed |
| F8VZZ0 | | Unreviewed |
| F8W1L8 | | Unreviewed |
★ = Canonical reviewed entry
Protein Properties (P11802)
| Property | Value |
|---|
| Length | 303 amino acids |
| Mass | 33,730 Da |
| Alternative Names | Cell division protein kinase 4, PSK-J3 |
RefSeq Protein
| Accession | Status |
|---|
| NP_000066 | REVIEWED |
Protein Domains and Families (Total: 5)
| ID | Name | Type |
|---|
| IPR050108 | CDK | Family |
| IPR000719 | Prot_kinase_dom | Domain |
| IPR011009 | Kinase-like_dom_sf | Homologous_superfamily |
| IPR008271 | Ser/Thr_kinase_AS | Active_site |
| IPR017441 | Protein_kinase_ATP_BS | Binding_site |
Section 4: Structure Identifiers
Experimental Structures (Total: 15 PDB entries)
| PDB ID | Method | Resolution (Å) | Description |
|---|
| 2W96 | X-RAY DIFFRACTION | 2.30 | CDK4 in complex with D-type cyclin |
| 2W99 | X-RAY DIFFRACTION | 2.80 | CDK4 in complex with D-type cyclin |
| 2W9F | X-RAY DIFFRACTION | 2.85 | CDK4 in complex with D-type cyclin |
| 2W9Z | X-RAY DIFFRACTION | 2.45 | CDK4 in complex with D-type cyclin |
| 3G33 | X-RAY DIFFRACTION | 3.00 | CDK4/cyclin D3 |
| 5FWK | ELECTRON MICROSCOPY | 3.90 | Hsp90-Cdc37-Cdk4 complex |
| 5FWL | ELECTRON MICROSCOPY | 9.00 | Hsp90-Cdc37-Cdk4 complex |
| 5FWM | ELECTRON MICROSCOPY | 8.00 | Hsp90-Cdc37-Cdk4 complex |
| 5FWP | ELECTRON MICROSCOPY | 7.20 | Hsp90-Cdc37-Cdk4 complex |
| 6P8E | X-RAY DIFFRACTION | 2.30 | CDK4/CyclinD1/P27 complex |
| 6P8F | X-RAY DIFFRACTION | 2.89 | CDK4/CyclinD1/P27 complex |
| 6P8G | X-RAY DIFFRACTION | 2.80 | CDK4/CyclinD1/P27 complex |
| 6P8H | X-RAY DIFFRACTION | 3.19 | CDK4/CyclinD1/P21 complex |
| 7SJ3 | X-RAY DIFFRACTION | 2.51 | CDK4-Cyclin D3 bound to abemaciclib |
| 9CSK | X-RAY DIFFRACTION | 2.25 | CDK4 cyclin D1 with atirmociclib |
Predicted Structures
| Model | pLDDT Score | Sequence Length | Fraction Very High Confidence |
|---|
| AlphaFold P11802 | 87.56 | 2376 | 0.68 (68%) |
Section 5: Cross-Species Orthologs
| Organism | Ensembl Gene ID | Symbol | Entrez ID |
|---|
| Mouse (Mus musculus) | ENSMUSG00000006728 | Cdk4 | 12567 |
| Rat (Rattus norvegicus) | ENSRNOG00000025602 | Cdk4 | 94201 |
| Zebrafish (Danio rerio) | ENSDARG00000087937 | cdk4 | 777730 |
| Fruit fly (Drosophila melanogaster) | FBGN0016131 | Cdk4 | 36854 |
| Worm (C. elegans) | No direct ortholog | - | - |
| Yeast (S. cerevisiae) | No direct ortholog (functional analog: CDC28) | - | - |
Section 6: Clinical Variants & AI Predictions
ClinVar Variant Summary
Total Clinical Variants: 1,224
| Classification | Count |
|---|
| Pathogenic | 3 |
| Likely Pathogenic | 0 |
| Uncertain Significance (VUS) | ~40 |
| Likely Benign | ~70 |
| Benign/Likely Benign | ~50 |
| Conflicting | ~7 |
Pathogenic Variants (3 total)
| ClinVar ID | HGVS | Protein Change | Classification | Associated Condition |
|---|
| 16928 | NM_000075.4:c.70C>T | p.Arg24Cys | Pathogenic | Melanoma susceptibility |
| 16929 | NM_000075.4:c.71G>A | p.Arg24His | Pathogenic | Melanoma susceptibility |
| 1801589 | NM_000075.4:c.279dup | p.Glu94Ter | Pathogenic | Melanoma susceptibility |
TOP 50 Variants of Uncertain Significance (VUS)
| ClinVar ID | HGVS Notation | Protein Change |
|---|
| 1000634 | c.784C>T | p.Pro262Ser |
| 1001651 | c.681T>G | p.Phe227Leu |
| 1006343 | c.244C>G | p.Arg82Gly |
| 1006709 | c.734C>T | p.Pro245Leu |
| 1014782 | c.494A>G | p.Tyr165Cys |
| 1017299 | c.644G>C | p.Cys215Ser |
| 1018679 | c.295G>A | p.Asp99Asn |
| 1019503 | c.652T>A | p.Ser218Thr |
| 1019806 | c.116T>C | p.Val39Ala |
| 1019892 | c.172G>A | p.Ala58Thr |
| 1020131 | c.392T>G | p.Leu131Arg |
| 1026483 | c.317A>G | p.Lys106Arg |
| 1035270 | c.753dup | p.Arg252fs |
| 1039892 | c.629G>T | p.Arg210Leu |
| 1041436 | c.790A>G | p.Met264Val |
| 1042239 | c.907G>A | p.Glu303Lys |
| 1042979 | c.319G>A | p.Ala107Thr |
| 1044287 | c.646G>A | p.Gly216Arg |
| 1046694 | c.872A>C | p.Gln291Pro |
| 1047410 | c.356A>C | p.Asp119Ala |
| 1047485 | c.571T>A | p.Tyr191Asn |
| 1051111 | c.736C>G | p.Arg246Gly |
| 1051733 | c.235G>C | p.Ala79Pro |
| 1052125 | c.782T>C | p.Val261Ala |
| 1054508 | c.848G>C | p.Arg283Pro |
| 1056495 | c.752C>T | p.Pro251Leu |
| 1057985 | c.38G>A | p.Gly13Asp |
| 1059743 | c.890del | p.Lys297fs |
| 1059884 | c.200A>T | p.Glu67Val |
| 1061882 | c.700C>G | p.Pro234Ala |
AI-Based Splice Effect Predictions (SpliceAI)
Total Predictions: 1,146
TOP 50 Predicted Splice-Altering Variants (by delta score):
| Variant | Effect | Delta Score |
|---|
| 12:57749155:C:A | donor_gain | 1.00 |
| 12:57748614:TTTC:T | acceptor_gain | 0.99 |
| 12:57748618:C:CC | acceptor_gain | 0.99 |
| 12:57748618:C:G | acceptor_loss | 0.99 |
| 12:57748619:T:C | acceptor_loss | 0.99 |
| 12:57748615:TTC:T | acceptor_gain | 0.98 |
| 12:57748616:TC:T | acceptor_gain | 0.97 |
| 12:57748617:CC:C | acceptor_gain | 0.97 |
| 12:57749154:T:A | donor_gain | 0.99 |
| 12:57749135:T:A | donor_gain | 0.95 |
| 12:57748613:ATTTC:A | acceptor_gain | 0.95 |
| 12:57749120:A:AC | donor_gain | 0.90 |
| 12:57749121:C:CC | donor_gain | 0.90 |
| 12:57749121:CTG:C | donor_gain | 0.90 |
| 12:57748571:GCTC:G | acceptor_gain | 0.84 |
| 12:57748618:C:T | acceptor_gain | 0.82 |
| 12:57749163:C:T | donor_gain | 0.82 |
| 12:57748570:AGCTC:A | acceptor_gain | 0.79 |
| 12:57748620:G:C | acceptor_loss | 0.79 |
| 12:57749165:ACAG:A | donor_gain | 0.79 |
| 12:57749166:CAGC:C | donor_gain | 0.79 |
| 12:57749121:CTGCT:C | donor_gain | 0.75 |
| 12:57748220:T:TC | acceptor_gain | 0.74 |
| 12:57748572:CTC:C | acceptor_gain | 0.73 |
| 12:57748614:T:C | acceptor_gain | 0.71 |
| 12:57749172:T:C | donor_gain | 0.70 |
| 12:57748574:C:CT | acceptor_gain | 0.69 |
| 12:57749136:C:A | donor_gain | 0.64 |
| 12:57749168:G:GA | donor_gain | 0.63 |
| 12:57748499:T:TA | donor_gain | 0.58 |
AlphaMissense Pathogenicity Predictions
Total Predictions: 1,940
TOP 50 Predicted Pathogenic Missense Variants:
| Variant | Protein Change | Score | Classification |
|---|
| 12:57749287:C:A | W238C | 0.998 | likely_pathogenic |
| 12:57748571:G:T | A289D | 0.994 | likely_pathogenic |
| 12:57748572:C:G | A289P | 0.994 | likely_pathogenic |
| 12:57749186:A:G | L272P | 0.990 | likely_pathogenic |
| 12:57749189:A:G | L271P | 0.992 | likely_pathogenic |
| 12:57748589:C:A | R283L | 0.991 | likely_pathogenic |
| 12:57748589:C:G | R283P | 0.991 | likely_pathogenic |
| 12:57748590:G:C | R283G | 0.987 | likely_pathogenic |
| 12:57748589:C:T | R283Q | 0.985 | likely_pathogenic |
| 12:57748613:A:T | M275K | 0.985 | likely_pathogenic |
| 12:57748613:A:C | M275R | 0.988 | likely_pathogenic |
| 12:57748603:A:C | F278L | 0.983 | likely_pathogenic |
| 12:57748610:A:C | L276R | 0.983 | likely_pathogenic |
| 12:57748610:A:T | L276Q | 0.982 | likely_pathogenic |
| 12:57748568:A:G | L290P | 0.979 | likely_pathogenic |
| 12:57749186:A:T | L272Q | 0.979 | likely_pathogenic |
| 12:57749254:A:C | F249L | 0.977 | likely_pathogenic |
| 12:57749189:A:T | L271Q | 0.975 | likely_pathogenic |
| 12:57749189:A:C | L271R | 0.974 | likely_pathogenic |
| 12:57749255:A:G | F249S | 0.966 | likely_pathogenic |
| 12:57749199:C:G | G268R | 0.945 | likely_pathogenic |
| 12:57749255:A:C | F249C | 0.924 | likely_pathogenic |
| 12:57748605:A:T | F278I | 0.922 | likely_pathogenic |
| 12:57748557:A:C | Y294D | 0.920 | likely_pathogenic |
| 12:57748583:G:A | S285F | 0.920 | likely_pathogenic |
| 12:57749210:A:T | M264K | 0.920 | likely_pathogenic |
| 12:57748612:C:A | M275I | 0.915 | likely_pathogenic |
| 12:57749285:G:C | P239R | 0.912 | likely_pathogenic |
| 12:57748557:A:T | Y294N | 0.902 | likely_pathogenic |
| 12:57748604:A:C | F278C | 0.900 | likely_pathogenic |
| 12:57749210:A:C | M264R | 0.905 | likely_pathogenic |
| 12:57749198:C:T | G268E | 0.892 | likely_pathogenic |
| 12:57749286:G:A | P239S | 0.891 | likely_pathogenic |
| 12:57748581:C:G | A286P | 0.886 | likely_pathogenic |
| 12:57748553:A:G | L295P | 0.885 | likely_pathogenic |
| 12:57749286:G:T | P239T | 0.878 | likely_pathogenic |
| 12:57748605:A:C | F278V | 0.873 | likely_pathogenic |
| 12:57748598:G:C | P280R | 0.872 | likely_pathogenic |
| 12:57748583:G:T | S285Y | 0.870 | likely_pathogenic |
| 12:57749276:A:T | V242E | 0.830 | likely_pathogenic |
Section 7: Biological Pathways & Gene Ontology
Reactome Pathways (Total: 19)
| Pathway ID | Pathway Name | Disease |
|---|
| R-HSA-69231 | Cyclin D associated events in G1 | No |
| R-HSA-75815 | Ubiquitin-dependent degradation of Cyclin D | No |
| R-HSA-187577 | SCF(Skp2)-mediated degradation of p27/p21 | No |
| R-HSA-381340 | Transcriptional regulation of white adipocyte differentiation | No |
| R-HSA-912446 | Meiotic recombination | No |
| R-HSA-2559580 | Oxidative Stress Induced Senescence | No |
| R-HSA-2559582 | Senescence-Associated Secretory Phenotype (SASP) | No |
| R-HSA-2559585 | Oncogene Induced Senescence | No |
| R-HSA-3214858 | RMTs methylate histone arginines | No |
| R-HSA-8849470 | PTK6 Regulates Cell Cycle | No |
| R-HSA-8878166 | Transcriptional regulation by RUNX2 | No |
| R-HSA-9616222 | Transcriptional regulation of granulopoiesis | No |
| R-HSA-9754119 | Drug-mediated inhibition of CDK4/CDK6 activity | No |
| R-HSA-9929491 | SPOP-mediated proteasomal degradation of PD-L1 | No |
| R-HSA-9630791 | Evasion of Oncogene Induced Senescence (p16INK4A/CDK4) | Yes |
| R-HSA-9630794 | Evasion of Oncogene Induced Senescence (p16INK4A/CDK4/CDK6) | Yes |
| R-HSA-9632697 | Evasion of Oxidative Stress Induced Senescence (p16INK4A/CDK4) | Yes |
| R-HSA-9632700 | Evasion of Oxidative Stress Induced Senescence (p16INK4A/CDK4/CDK6) | Yes |
| R-HSA-9661069 | Defective binding of RB1 mutants to E2F1/E2F2/E2F3 | Yes |
Gene Ontology Annotations (Total: 34)
Molecular Function (5 terms)
| GO ID | Term |
|---|
| GO:0004693 | cyclin-dependent protein serine/threonine kinase activity |
| GO:0005524 | ATP binding |
| GO:0016538 | cyclin-dependent protein serine/threonine kinase regulator activity |
| GO:0030332 | cyclin binding |
| GO:0106310 | protein serine kinase activity |
Biological Process (17 terms)
| GO ID | Term |
|---|
| GO:0000082 | G1/S transition of mitotic cell cycle |
| GO:0007165 | signal transduction |
| GO:0008284 | positive regulation of cell population proliferation |
| GO:0009410 | response to xenobiotic stimulus |
| GO:0010389 | regulation of G2/M transition of mitotic cell cycle |
| GO:0010468 | regulation of gene expression |
| GO:0010971 | positive regulation of G2/M transition of mitotic cell cycle |
| GO:0048146 | positive regulation of fibroblast proliferation |
| GO:0051301 | cell division |
| GO:0051726 | regulation of cell cycle |
| GO:0060260 | regulation of transcription initiation by RNA polymerase II |
| GO:0061469 | regulation of type B pancreatic cell proliferation |
| GO:0071222 | cellular response to lipopolysaccharide |
| GO:0071353 | cellular response to interleukin-4 |
| GO:1904628 | cellular response to phorbol 13-acetate 12-myristate |
| GO:1904637 | cellular response to ionomycin |
Cellular Component (12 terms)
| GO ID | Term |
|---|
| GO:0000307 | cyclin-dependent protein kinase holoenzyme complex |
| GO:0000785 | chromatin |
| GO:0005634 | nucleus |
| GO:0005654 | nucleoplasm |
| GO:0005667 | transcription regulator complex |
| GO:0005730 | nucleolus |
| GO:0005737 | cytoplasm |
| GO:0005829 | cytosol |
| GO:0005923 | bicellular tight junction |
| GO:0031965 | nuclear membrane |
| GO:0097128 | cyclin D1-CDK4 complex |
| GO:0097129 | cyclin D2-CDK4 complex |
| GO:0097130 | cyclin D3-CDK4 complex |
Section 8: Protein Interactions & Molecular Networks
Protein-Protein Interactions
- STRING interactions: 7,256 total
- IntAct interactions: 438 total
- BioGRID interactions: 710 total
TOP 50 Highest-Confidence Interacting Proteins (STRING)
| UniProt ID | Gene | Confidence Score |
|---|
| P24385 | CCND1 (Cyclin D1) | 999 |
| P42771 | CDKN2A (p16INK4a) | 999 |
| Q96S94 | CCND2 | 999 |
| P38936 | CDKN1A (p21) | 998 |
| P42772 | CDKN2B (p15INK4b) | 998 |
| P30279 | CCND2 | 997 |
| P30281 | CCND3 (Cyclin D3) | 997 |
| P42773 | CDKN2C (p18INK4c) | 997 |
| P55273 | CDKN2D (p19INK4d) | 997 |
| P20248 | CCNA2 | 996 |
| P46527 | CDKN1B (p27Kip1) | 996 |
| Q16543 | CDC37 | 996 |
| P08238 | HSP90AB1 | 992 |
| P07900 | HSP90AA1 | 990 |
| P06400 | RB1 (Retinoblastoma) | 985 |
| P24941 | CDK2 | 983 |
| Q00534 | CDK6 | 983 |
| P78396 | CCNA1 | 979 |
| O75832 | PDE10A | 942 |
| O96020 | CCNE2 | 922 |
| P04637 | TP53 | 922 |
| Q01094 | E2F1 | 909 |
| P01106 | MYC | 904 |
| P24864 | CCNE1 | 896 |
| Q00987 | MDM2 | 884 |
| P14635 | CCNB1 | 865 |
| P31947 | SFN (14-3-3 sigma) | 846 |
| Q9BT92 | NPAT | 840 |
| Q99828 | CBLL1 | 837 |
| P60484 | PTEN | 825 |
Protein Similarity
ESM2 Structural/Embedding Similarity (Total: 27 similar proteins)
| UniProt ID | Top Similarity | Avg Similarity |
|---|
| B2MVY4 | 1.000 | 0.984 |
| Q32KY4 | 1.000 | 0.984 |
| P79432 | 0.999 | 0.985 |
| Q4KM34 | 0.999 | 0.984 |
| Q9JHU3 | 0.999 | 0.983 |
| Q5R7I7 | 0.999 | 0.985 |
| Q8IZL9 | 0.999 | 0.985 |
| P30285 (CDK6) | 0.999 | 0.986 |
| P35426 | 0.999 | 0.987 |
| Q00534 (CDK6) | 0.999 | 0.989 |
| P38973 | 0.998 | 0.990 |
| Q64261 | 0.999 | 0.989 |
| Q06309 | 0.998 | 0.990 |
| P54665 | 0.989 | 0.986 |
| P54666 | 0.990 | 0.987 |
| Q38774 | 0.996 | 0.989 |
| P29321 | 0.980 | 0.974 |
| Q91727 | 0.996 | 0.989 |
| Q2QSL4 | 0.980 | 0.964 |
| P11681 | 0.962 | 0.938 |
DIAMOND Sequence Homology (Total: 28 similar proteins)
| UniProt ID | Identity (%) | Bitscore |
|---|
| B2MVY4 | 100.00 | 615 |
| Q32KY4 | 100.00 | 615 |
| Q5RD27 | 99.40 | 1242 |
| Q96SB4 | 99.40 | 1242 |
| P79432 | 99.00 | 611 |
| P35426 | 98.70 | 605 |
| P30285 | 98.70 | 603 |
| Q00534 (CDK6) | 96.30 | 634 |
| Q64261 | 96.30 | 632 |
| P24381 | 95.50 | 627 |
| P17613 | 95.50 | 625 |
| B8Y466 | 94.70 | 1014 |
| Q9UPE1 | 94.70 | 1009 |
| O43948 | 94.40 | 1700 |
| C6KTB8 | 94.40 | 1701 |
| Q9Z0G2 | 93.20 | 993 |
| O54781 | 91.60 | 1132 |
| O70551 | 91.60 | 1139 |
| P78362 | 91.90 | 1123 |
| Q91727 | 79.00 | 464 |
Section 9: Transcription Factor Regulatory Data
Note: CDK4 is NOT a transcription factor. It is a serine/threonine kinase that regulates cell cycle progression. However, CDK4 is regulated BY transcription factors.
Upstream Transcriptional Regulators of CDK4 (Total: 45)
| TF Gene | Regulation Type | Confidence |
|---|
| E2F1 | Activation | - |
| MYC | Activation | High |
| SP1 | Activation | High |
| STAT3 | Activation | - |
| RELA | Activation | - |
| NFKB | Activation | High |
| NFKB1 | Activation | Low |
| HDAC1 | Activation | - |
| POU4F2 | Activation | High |
| SATB1 | Activation | - |
| SOX9 | Activation | - |
| ZEB1 | Activation | - |
| PDGFB | Activation | - |
| CEBPA | Repression | - |
| IRF1 | Repression | - |
| LRRC4 | Repression | - |
| NFATC2 | Repression | High |
| NR3C1 | Repression | - |
| PPARG | Repression | - |
| SOX6 | Repression | - |
| TGFB1 | Repression | - |
| ATF2 | Unknown | High |
| TP53 | Unknown | High |
| ESR1 | Unknown | - |
| ETS1 | Unknown | - |
| FOS | Unknown | Low |
| JUND | Unknown | High |
| USF1 | Unknown | High |
| USF2 | Unknown | High |
| GATA4 | - | High |
| KLF4 | - | High |
| RUNX1 | - | High |
| EZH2 | - | Low |
| HR | - | Low |
| IRF3 | - | Low |
| JARID2 | - | Low |
| MAFA | - | Low |
| NEUROG3 | - | Low |
| NFKBID | - | Low |
| PARP1 | - | Low |
| PAX3 | - | Low |
| TFDP1 | - | Low |
| YBX3 | - | Low |
| KSR1 | - | - |
| SIN3B | - | - |
CDK4 Downstream Substrates and Targets (SIGNOR, Total: 73 interactions)
| Target | Effect | Mechanism | Score |
|---|
| RB1 | down-regulates | phosphorylation | 0.93 |
| RBL1 | up-regulates activity | phosphorylation | 0.81 |
| SMAD3 | down-regulates activity | phosphorylation | 0.76 |
| BRCA1 | down-regulates | phosphorylation | 0.67 |
| FOXM1 | up-regulates | phosphorylation | 0.62 |
| MYOD1 | down-regulates | binding | 0.51 |
| FOXO1 | up-regulates activity | phosphorylation | 0.46 |
| RASSF1 | down-regulates | phosphorylation | 0.41 |
| RUNX3 | down-regulates | phosphorylation | 0.40 |
| CELF1 | up-regulates activity | phosphorylation | 0.40 |
| KAT2A | up-regulates activity | phosphorylation | 0.36 |
| GATA4 | down-regulates quantity | phosphorylation | 0.36 |
| PELP1 | up-regulates | phosphorylation | 0.35 |
| MYOG | down-regulates | binding | 0.33 |
| PAX3 | up-regulates activity | phosphorylation | 0.30 |
| MEF2A | down-regulates | binding | 0.28 |
| MEF2C | down-regulates | binding | 0.28 |
| MEF2D | down-regulates | binding | 0.28 |
| APP | down-regulates quantity | phosphorylation | 0.26 |
| PRDX1 | down-regulates | phosphorylation | 0.23 |
| TOB2 | up-regulates activity | phosphorylation | 0.20 |
| TFEB | up-regulates activity | phosphorylation | 0.20 |
| TFE3 | up-regulates activity | phosphorylation | 0.20 |
Section 10: Drug & Pharmacology Data
ChEMBL Target Information
Total ChEMBL Targets involving CDK4: 18
| ChEMBL ID | Target Name | Type |
|---|
| CHEMBL331 | Cyclin-dependent kinase 4 | SINGLE PROTEIN |
| CHEMBL1907601 | CDK4/cyclin D1 | PROTEIN COMPLEX |
| CHEMBL3038472 | CDK4/Cyclin D3 | PROTEIN COMPLEX |
| CHEMBL3301385 | CDK4/cyclin D2 | PROTEIN COMPLEX |
| CHEMBL3885548 | Cyclin-A1/CDK4 | PROTEIN COMPLEX |
| CHEMBL3885554 | CDK4/G1/S-specific cyclin-E1 | PROTEIN COMPLEX |
| CHEMBL2095942 | CDK4/cyclin D | PROTEIN COMPLEX GROUP |
| CHEMBL3885553 | CDK4/6 | PROTEIN FAMILY |
| CHEMBL3038517 | CDK2/CDK4 | PROTEIN FAMILY |
| CHEMBL3559691 | Cyclin-dependent kinase | PROTEIN FAMILY |
| CHEMBL4888444 | CDK2/4/6 | PROTEIN FAMILY |
| CHEMBL2111326 | CDK2 and CDK4 | SELECTIVITY GROUP |
| CHEMBL4523963 | CDK4/CDK1 | SELECTIVITY GROUP |
| CHEMBL4106184 | CDK4/CDK9 | PROTEIN FAMILY |
Approved and Late-Stage CDK4 Inhibitors (Phase 3+)
| ChEMBL ID | Drug Name | Type | Phase | Notes |
|---|
| CHEMBL189963 | PALBOCICLIB | Small molecule | 4 (Approved) | CDK4/6 inhibitor, breast cancer |
| CHEMBL3301610 | ABEMACICLIB | Small molecule | 4 (Approved) | CDK4/6 inhibitor, breast cancer |
| CHEMBL3545110 | RIBOCICLIB | Small molecule | 4 (Approved) | CDK4/6 inhibitor, breast cancer |
| CHEMBL1287853 | FEDRATINIB | Small molecule | 4 (Approved) | JAK2/CDK4 inhibitor |
| CHEMBL2028663 | DABRAFENIB | Small molecule | 4 (Approved) | BRAF/CDK4 inhibitor |
| CHEMBL2403108 | CERITINIB | Small molecule | 4 (Approved) | ALK/CDK4 inhibitor |
| CHEMBL3301612 | ENCORAFENIB | Small molecule | 4 (Approved) | BRAF inhibitor |
| CHEMBL3301622 | GILTERITINIB | Small molecule | 4 (Approved) | FLT3 inhibitor |
| CHEMBL502835 | NINTEDANIB | Small molecule | 4 (Approved) | Multi-kinase inhibitor |
| CHEMBL535 | SUNITINIB | Small molecule | 4 (Approved) | Multi-kinase inhibitor |
| CHEMBL2103840 | DINACICLIB | Small molecule | 3 | Pan-CDK inhibitor |
| CHEMBL3904602 | LEROCICLIB | Small molecule | 3 | CDK4/6 inhibitor |
| CHEMBL428690 | ALVOCIDIB | Small molecule | 3 | Pan-CDK inhibitor |
| CHEMBL522892 | DOVITINIB | Small molecule | 3 | Multi-kinase inhibitor |
| CHEMBL603469 | LESTAURTINIB | Small molecule | 3 | Multi-kinase inhibitor |
| CHEMBL91829 | RUBOXISTAURIN | Small molecule | 3 | PKC/CDK inhibitor |
Clinical Bioactivity Data
- ChEMBL activities: 4,483 activity records
- PubChem bioactivities: 2,171 activity records
- BindingDB entries: 5,514 binding data points
Pharmacogenomics
| PharmGKB ID | - VIP Gene Status | - CPIC Guideline |
|---|
| PA102 | | | |
| Yes (Very Important Pharmacogene) | No | |
| | | Expression Profiles** |
Bgee Expression Summary
| Attribute | Value |
|---|
| Expression Breadth | Ubiquitous |
| Total Present Calls | 138 |
| Max Expression Score | 98.33 |
TOP 30 Tissues by Expression Score
| Tissue/Anatomical Entity | Expression Score | Rank |
|---|
| Embryo | 98.33 | 781 |
| Ganglionic eminence | 98.33 | 779 |
| Ventricular zone | 98.30 | 793 |
| Stromal cell of endometrium | 97.91 | 975 |
| Right adrenal gland | 97.21 | 1300 |
| Ovary | 97.13 | 1340 |
| Right ovary | 97.13 | 1340 |
| Smooth muscle tissue | 97.11 | 1350 |
| Right adrenal gland cortex | 97.06 | 1370 |
| Left ovary | 97.05 | 1380 |
| Left adrenal gland | 96.92 | 1440 |
| Left adrenal gland cortex | 96.76 | 1510 |
| Left uterine tube | 96.75 | 1520 |
| Endocervix | 96.70 | 1540 |
| Adrenal gland | 96.70 | 1540 |
| Ectocervix | 96.70 | 1540 |
| Body of uterus | 96.66 | 1560 |
| Myometrium | 96.43 | 1660 |
| Adenohypophysis | 96.38 | 1690 |
| Fallopian tube | 96.35 | 1700 |
| Pancreas | 96.34 | 1710 |
| Islet of Langerhans | 96.31 | 1720 |
| Gall bladder | 96.31 | 1720 |
| Body of pancreas | 96.29 | 1730 |
| Pituitary gland | 96.16 | 1790 |
| Vermiform appendix | 96.06 | 1840 |
| Adrenal tissue | 96.03 | 1850 |
| Right coronary artery | 95.95 | 1890 |
| Lymph node | 95.92 | 1900 |
| Uterine cervix | 95.91 | 1910 |
Single-Cell Expression Atlas (scxa)
Total Experiments: 8
| Experiment ID | Description | Cell Count |
|---|
| E-HCAD-4 | Census of Immune Cells | 791,344 |
| E-HCAD-56 | Developing mouse and human spinal cord | 245,394 |
| E-HCAD-5 | Organoids inter-individual variation | 25,049 |
| E-MTAB-8884 | Chronic myelomonocytic leukemia stem cell | 9,386 |
| E-HCAD-13 | Human induced dendritic cells | 8,012 |
| E-GEOD-89232 | Primary human conventional dendritic cells | 957 |
| E-MTAB-6379 | Human T lymphocyte from H7N9 infected patients | 119 |
| E-MTAB-2983 | Functional germ line stem cells study | 38 |
Section 12: Disease Associations
Mendelian/Monogenic Disease Links (GenCC)
| Submitter | Disease | Classification | Inheritance |
|---|
| G2P | Melanoma, cutaneous malignant, susceptibility to, 3 (OMIM:609048) | Definitive | Autosomal dominant |
| Ambry Genetics | Melanoma, cutaneous malignant, susceptibility to, 3 (OMIM:609048) | Strong | Autosomal dominant |
| Labcorp Genetics | Melanoma, cutaneous malignant, susceptibility to, 3 (OMIM:609048) | Strong | Autosomal dominant |
| Genomics England | Malignant pancreatic neoplasm (MONDO:0009831) | Moderate | Autosomal dominant |
Orphanet Disease Associations
| Orphanet ID | Disease Name | Type | Gene Count |
|---|
| 618 | Familial melanoma | Disease | 11 genes |
| 99970 | Dedifferentiated liposarcoma | Histopathological subtype | 3 genes |
| 99971 | Well-differentiated liposarcoma | Histopathological subtype | 3 genes |
Phenotype Associations (HPO Terms - Total: 19)
| HPO ID | Phenotype Term |
|---|
| HP:0000006 | Autosomal dominant inheritance |
| HP:0002861 | Melanoma |
| HP:0012056 | Cutaneous melanoma |
| HP:0001054 | Numerous nevi |
| HP:0001062 | Atypical nevus |
| HP:0001074 | Atypical nevi in non-sun exposed areas |
| HP:0003764 | Nevus |
| HP:0001480 | Freckling |
| HP:0002894 | Neoplasm of the pancreas |
| HP:0100013 | Neoplasm of the breast |
| HP:0006753 | Neoplasm of the stomach |
| HP:0000488 | Retinopathy |
| HP:0000958 | Dry skin |
| HP:0001482 | Subcutaneous nodule |
| HP:0001595 | Abnormal hair morphology |
| HP:0002071 | Abnormality of extrapyramidal motor function |
| HP:0002579 | Gastrointestinal dysmotility |
| HP:0012211 | Abnormal renal physiology |
| HP:0100763 | Abnormality of the lymphatic system |
Complex Trait Associations (GWAS - Total: 6)
| Study ID | Trait | Mapped Gene(s) | p-value |
|---|
| GCST010703_269 | Brain morphology (MOSTest) | MBD6 | 2.0e-11 |
| GCST006959_133 | Rheumatoid arthritis | OS9, OS9-AS1 | 9.0e-08 |
| GCST002318_39 | Rheumatoid arthritis | OS9, OS9-AS1 | 7.0e-08 |
| GCST002318_137 | Rheumatoid arthritis | OS9, OS9-AS1 | 1.0e-07 |
| GCST006959_7 | Rheumatoid arthritis | OS9, OS9-AS1 | 1.0e-07 |
| GCST000987_14 | Celiac disease or Rheumatoid arthritis | B4GALNT1-RPL13AP23 | 4.0e-06 |
SUMMARY STATISTICS
| Category | Count |
|---|
| Gene-level identifiers | 6 databases |
| Transcripts (Ensembl) | 18 |
| Transcripts (protein_coding) | 13 |
| Protein isoforms (UniProt) | 10 |
| Protein domains (InterPro) | 5 |
| PDB structures | 15 |
| Orthologs | 4 species |
| ClinVar variants | 1,224 |
| Pathogenic variants | 3 |
| SpliceAI predictions | 1,146 |
| AlphaMissense predictions | 1,940 |
| Reactome pathways | 19 |
| GO terms | 34 |
| STRING interactions | 7,256 |
| IntAct interactions | 438 |
| BioGRID interactions | 710 |
| Upstream TF regulators | 45 |
| Downstream substrates | 23+ |
| ChEMBL targets | 18 |
| Approved CDK4-targeting drugs | 3 (specific) + 7 (multi-kinase) |
| Tissues expressed | 138 (ubiquitous) |
| Single-cell experiments | 8 |
| Associated diseases | 4 |
| HPO phenotypes | 19 |
| GWAS associations | 6 |
Reference generated from BioBTree integrated biological databases. Data current as of database version.