SPDYA

gene
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Also known as SPY1Ringo3

Summary

SPDYA (speedy/RINGO cell cycle regulator family member A, HGNC:30613) is a protein-coding gene on chromosome 2p23.2, encoding Speedy protein A (Q5MJ70). Regulates the G1/S phase transition of the cell cycle by binding and activating CDK1 and CDK2.

Enables protein kinase activator activity and protein kinase binding activity. Involved in several processes, including G1/S transition of mitotic cell cycle; positive regulation of cell population proliferation; and positive regulation of protein kinase activity. Located in nucleoplasm.

Source: NCBI Gene 245711 — RefSeq curated summary.

At a glance

  • GWAS associations: 1
  • Clinical variants (ClinVar): 36 total
  • MANE Select transcript: NM_182756

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:30613
Approved symbolSPDYA
Namespeedy/RINGO cell cycle regulator family member A
Location2p23.2
Locus typegene with protein product
StatusApproved
AliasesSPY1, Ringo3
Ensembl geneENSG00000163806
Ensembl biotypeprotein_coding
OMIM614029
Entrez245711

Gene structure

Transcript identifiers

Ensembl transcripts: 7 — 4 protein_coding, 3 protein_coding_CDS_not_defined

ENST00000334056, ENST00000379579, ENST00000439646, ENST00000449210, ENST00000462832, ENST00000467226, ENST00000491044

RefSeq mRNA: 3 — MANE Select: NM_182756 NM_001008779, NM_001142634, NM_182756

CCDS: CCDS1767

Canonical transcript exons

ENST00000334056 — 8 exons

ExonStartEnd
ENSE000013417382881461328814686
ENSE000018597792881083428810947
ENSE000034746112881904828819106
ENSE000035137412882914828829319
ENSE000035550712881599728816249
ENSE000035860862882232528822410
ENSE000036277242884017228840469
ENSE000038471132884985028850610

Expression profiles

Bgee: expression breadth ubiquitous, 163 present calls, max score 91.99.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 45.8500 / max 1113.5447, expressed in 1796 samples.

FANTOM5 promoters (6 alternative TSS)

Promoter IDTPM avgSamples expressed
1948545.85001796
194990.365663
194880.060311
194980.01734
2021360.00743
2021350.00714

Top tissues by expression

254 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
left testisUBERON:000453391.99gold quality
right testisUBERON:000453491.93gold quality
testisUBERON:000047389.32gold quality
spermCL:000001987.75gold quality
male germ line stem cell (sensu Vertebrata) in testisCL:0000089 ∩ UBERON:000047384.12gold quality
calcaneal tendonUBERON:000370177.44gold quality
adult organismUBERON:000702377.31gold quality
lower esophagus mucosaUBERON:003583476.91gold quality
primordial germ cell in gonadCL:0000670 ∩ UBERON:000099172.46gold quality
left ovaryUBERON:000211969.89gold quality
granulocyteCL:000009469.78gold quality
right ovaryUBERON:000211869.60gold quality
mucosa of transverse colonUBERON:000499169.59gold quality
cerebellar hemisphereUBERON:000224568.97gold quality
cerebellar cortexUBERON:000212968.87gold quality
monocyteCL:000057668.78gold quality
descending thoracic aortaUBERON:000234568.69gold quality
endocervixUBERON:000045868.30gold quality
leukocyteCL:000073868.25gold quality
ascending aortaUBERON:000149668.19gold quality
thoracic aortaUBERON:000151567.95gold quality
body of uterusUBERON:000985367.68gold quality
right hemisphere of cerebellumUBERON:001489067.56gold quality
aortaUBERON:000094767.22gold quality
adrenal tissueUBERON:001830367.19gold quality
right lobe of liverUBERON:000111466.97gold quality
popliteal arteryUBERON:000225066.94gold quality
tibial arteryUBERON:000761066.93gold quality
cerebellumUBERON:000203766.79gold quality
tibial nerveUBERON:000132366.47gold quality

Single-cell (SCXA)

Detected in 2 experiment(s), a significant marker in 0.

ExperimentMarker?Max mean expression
E-MTAB-6379no106.28
E-ANND-3no2.78

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

37 targeting SPDYA, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-3163100.0077.238605
HSA-MIR-196A-1-3P99.9972.152772
HSA-MIR-548P99.9872.253784
HSA-MIR-302C-5P99.9772.563642
HSA-MIR-314899.9775.066478
HSA-MIR-589-3P99.9169.622088
HSA-MIR-5582-3P99.8672.484221
HSA-MIR-3121-3P99.8271.963630
HSA-MIR-430799.8270.453374
HSA-MIR-4659A-3P99.8072.624248
HSA-MIR-4659B-3P99.8072.624248
HSA-MIR-4645-3P99.7669.33993
HSA-MIR-33A-3P99.7070.273362
HSA-MIR-5580-3P99.7069.412052
HSA-MIR-1212499.6869.172700
HSA-MIR-58799.6470.862611
HSA-MIR-57899.4668.361787
HSA-MIR-21-5P99.4670.541035
HSA-MIR-208A-5P99.4270.831913
HSA-MIR-208B-5P99.4270.831952
HSA-MIR-942-5P99.4168.401977
HSA-MIR-508-5P99.4164.251248
HSA-MIR-431199.3170.473041
HSA-MIR-410-3P99.2769.982457
HSA-MIR-590-5P99.2570.76930
HSA-MIR-6830-5P99.0168.731884
HSA-MIR-487A-5P98.8569.37993
HSA-MIR-487B-5P98.8569.48987
HSA-MIR-463598.7467.631339
HSA-MIR-2115-5P98.6668.071191

Literature-anchored findings (GeneRIF, showing 19)

  • This protein mediates protection of mammalian cells against DNA damage. (PMID:12839962)
  • This study reports that Spy1 expression allows cells to evade checkpoints and apoptosis and suggest that Spy1 regulation of CDK2 is important for the response to DNA damage. (PMID:16951407)
  • Spy1 expression enhances CDK2-dependent p27 degradation during late G1 and throughout S-phase (PMID:17671428)
  • Spy1 fulfills a novel regulatory role in the intrinsic DNA damage response and maintains the balance between checkpoint activation, apoptosis, repair and cell cycle progression in response to exogenous or intrinsic damage. (PMID:19106603)
  • Data show that tight regulation of RINGO/Speedy A is important for the somatic cell cycle. (PMID:19622356)
  • Spy1 overexpression is involved in the pathogenesis of hepatocellular carcinoma, it may be a favorable independent poor prognostic parameter for hepatocellular carcinoma. (PMID:19686732)
  • Spy1 expression positively correlates with the malignancy of gliomas. (PMID:22447439)
  • Our results suggest that Spy1 may be a possible prognostic indicator in NHLs, and it was correlated with phosphorylation of p27(Kip1) on Thr187 (PMID:22492278)
  • Cell adhesion to fibronectin down-regulates the expression of Spy1 and contributes to drug resistance in multiple myeloma cells. (PMID:24037419)
  • we demonstrate that the atypical cyclin-like protein Spy1 plays a role in balancing the division properties of glioma cells with stemness properties (PMID:24434210)
  • CRMP1 interacted with Spy1 which would disturb the association of CRMP1 with actin and was involved in the collapse of growth cones induced by Sema3A and regeneration after sciatic nerve crush. (PMID:25526860)
  • A novel Spy1-CLIPR-59 interplay was identified in glioblastoma resistance to TNF-alpha. (PMID:26017671)
  • Spy1 participates in the proliferation and apoptosis of epithelial ovarian cancer. (PMID:26644004)
  • Authors demonstrate that mammalian Spy1-mediated ERK activation increases ligand-independent phosphorylation and activation of estrogen receptor alpha, correlating with a decrease in tamoxifen sensitivity. (PMID:28423577)
  • The authors find that Spy1 confers structural changes to Cdk2 that obviate the requirement of Cdk activation loop phosphorylation. (PMID:28666995)
  • This mouse model demonstrates for the first time that degradation of the cyclin-like protein Spy1 is an essential component of p53-mediated tumour suppression. Targeting cyclin-like protein activity may therefore represent a mechanism of re-sensitizing cells to important cell cycle checkpoints in a therapeutic setting. (PMID:31829284)
  • Speedy/RINGO protein interacts with ERK/MAPK and PI3K/AKT pathways in SH-SY5Y neuroblastoma cells. (PMID:32602013)
  • Salicylidene acylhydrazides attenuate survival of SH-SY5Y neuroblastoma cells through affecting mitotic regulator Speedy/RINGO and ERK/MAPK-PI3K/AKT signaling. (PMID:32691165)
  • The SUN1-SPDYA interaction plays an essential role in meiosis prophase I. (PMID:34039995)

Cross-species orthologs

3 orthologs

OrganismSymbolGene ID
danio_reriospdyaENSDARG00000059131
mus_musculusSpdyaENSMUSG00000052525
rattus_norvegicusSpdyaENSRNOG00000004534

Paralogs (1): SPDYC (ENSG00000204710)

Protein

Protein identifiers

Speedy protein AQ5MJ70 (reviewed: Q5MJ70)

Alternative names: Rapid inducer of G2/M progression in oocytes A, Speedy-1

All UniProt accessions (4): A0A384MTT5, E7EPV1, Q5MJ70, H7C0J1

UniProt curated annotations — full annotation on UniProt →

Function. Regulates the G1/S phase transition of the cell cycle by binding and activating CDK1 and CDK2. Contributes to CDK2 activation without promoting CDK2 phosphorylation, by inducing a conformation change of the CDK2 T-loop that obstructs the substrate-binding cleft prior to kinase activation. Mediates cell survival during the DNA damage process through activation of CDK2.

Subunit / interactions. Interacts with CDK1. Interacts with CDK2. May interact with CDKN1B/KIP1. Identified in a complex with CDK2 and CDKN1B/KIP1, where it interacts primarily with CDK2.

Subcellular location. Nucleus.

Tissue specificity. Highly expressed in testis. Expressed at a low level in wide range of tissues including bone marrow, brain, heart, kidney, colon, liver, placenta, spleen, skeletal muscle, salivary gland, thyroid gland, thymus, trachea and uterus. Expressed at a slightly higher level in adrenal gland, cerebellum, small intestine, lung, prostate and trachea. Expression is cell cycle-dependent, being restricted to cells in G1/S phase.

Domain organisation. The C-terminus is required for CDK2-activation, but not CDK2-binding.

Similarity. Belongs to the Speedy/Ringo family.

Isoforms (2)

UniProt IDNamesCanonical?
Q5MJ70-22, A2yes
Q5MJ70-11, A1

RefSeq proteins (3): NP_001008779, NP_001136106, NP_877433* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR020984SpeedyFamily
IPR052316Speedy-Ringo_regulatorFamily

Pfam: PF11357

UniProt features (26 total): helix 13, strand 3, region of interest 2, modified residue 2, splice variant 2, mutagenesis site 2, chain 1, turn 1

Structure

Experimental structures (PDB)

4 structures.

PDBMethodResolution (Å)
5UQ2X-RAY DIFFRACTION2.7
7E34X-RAY DIFFRACTION3.19
5UQ1X-RAY DIFFRACTION3.2
5UQ3X-RAY DIFFRACTION3.6

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q5MJ70-F169.250.42

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Post-translational modifications (2): 222, 224

Mutagenesis-validated functional residues (2):

PositionPhenotype
97loss of cdk2 activation; when associated with q-135.
135loss of cdk2 activation; when associated with n-97.

Function

Pathways and Gene Ontology

Reactome pathways

0 pathways

MSigDB gene sets: 100 (showing top): GOBP_MEIOTIC_CHROMOSOME_SEGREGATION, GOBP_CHROMOSOME_ORGANIZATION, GOBP_TELOMERE_CAPPING, GOBP_CHROMOSOME_LOCALIZATION, GOBP_ESTABLISHMENT_OF_PROTEIN_LOCALIZATION_TO_CHROMOSOME, GOBP_CELL_CYCLE_PHASE_TRANSITION, GOBP_OOGENESIS, GAUSSMANN_MLL_AF4_FUSION_TARGETS_A_UP, GOBP_TELOMERE_ORGANIZATION, GOBP_MALE_GAMETE_GENERATION, GOBP_ESTABLISHMENT_OF_PROTEIN_LOCALIZATION_TO_ORGANELLE, GOMF_KINASE_ACTIVATOR_ACTIVITY, GOBP_ORGANELLE_FISSION, GOBP_CELL_CYCLE_G1_S_PHASE_TRANSITION, GOBP_DNA_DAMAGE_RESPONSE

GO Biological Process (11): G1/S transition of mitotic cell cycle (GO:0000082), DNA damage response (GO:0006974), male meiotic nuclear division (GO:0007140), spermatogenesis (GO:0007283), positive regulation of cell population proliferation (GO:0008284), telomere capping (GO:0016233), oogenesis (GO:0048477), meiotic attachment of telomere to nuclear envelope (GO:0070197), establishment of protein localization to telomere (GO:0070200), positive regulation of cyclin-dependent protein serine/threonine kinase activity (GO:0045737), positive regulation of protein kinase activity (GO:0045860)

GO Molecular Function (3): protein kinase binding (GO:0019901), protein kinase activator activity (GO:0030295), protein binding (GO:0005515)

GO Cellular Component (5): chromosome, telomeric region (GO:0000781), XY body (GO:0001741), nucleus (GO:0005634), nuclear envelope (GO:0005635), nucleoplasm (GO:0005654)

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
male gamete generation2
protein kinase activity2
mitotic cell cycle1
mitotic cell cycle phase transition1
cell cycle G1/S phase transition1
cellular response to stress1
meiotic cell cycle1
meiotic nuclear division1
developmental process involved in reproduction1
cell population proliferation1
regulation of cell population proliferation1
positive regulation of cellular process1
telomere maintenance1
germ cell development1
female gamete generation1
meiotic telomere tethering at nuclear periphery1
chromosome attachment to the nuclear envelope1
meiotic cell cycle process1
establishment of protein localization to chromosome1
regulation of cyclin-dependent protein serine/threonine kinase activity1
cyclin-dependent protein serine/threonine kinase activity1
positive regulation of cell cycle1
positive regulation of protein serine/threonine kinase activity1
positive regulation of cyclin-dependent protein kinase activity1
positive regulation of protein phosphorylation1
positive regulation of kinase activity1
regulation of protein kinase activity1
kinase binding1
kinase activator activity1
protein kinase regulator activity1
binding1
chromosomal region1
sex chromosome1
condensed chromatin of inactivated sex chromosome1
intracellular membrane-bounded organelle1
nucleus1
endomembrane system1
organelle envelope1
nuclear lumen1
cellular anatomical structure1

Protein interactions and networks

STRING

518 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
SPDYATERB2Q8NHR7750
SPDYATERB1Q8NA31728
SPDYACDK2P24941636
SPDYASUN1O94901601
SPDYACDKN1BP46527591
SPDYAH0YEC1H0YEC1510
SPDYACDK1P06493509
SPDYAKHDRBS3O75525454
SPDYATERF1P54274436
SPDYAERBB2P04626393
SPDYAKASH5Q8N6L0378
SPDYANUTM2DQ5VT03321
SPDYAMEIOBQ8N635311
SPDYASYCP1Q15431295
SPDYANUP210LQ5VU65294

IntAct

14 interactions, top by confidence:

ABTypeScore
AQP1SPDYApsi-mi:“MI:0915”(physical association)0.560
CDKN1BSPDYApsi-mi:“MI:0915”(physical association)0.560
CDK5SPDYApsi-mi:“MI:0915”(physical association)0.560
CDK16SPDYApsi-mi:“MI:0915”(physical association)0.370
UBCSPDYApsi-mi:“MI:0914”(association)0.350
SPDYASKP2psi-mi:“MI:0914”(association)0.350
SKP2SPDYApsi-mi:“MI:0914”(association)0.350
AQP1SPDYApsi-mi:“MI:0915”(physical association)0.000
CDKN1BSPDYApsi-mi:“MI:0915”(physical association)0.000
CDK5SPDYApsi-mi:“MI:0915”(physical association)0.000

BioGRID (35): SPDYA (Affinity Capture-Western), CLIP3 (Affinity Capture-Western), SPDYA (Affinity Capture-RNA), SPDYA (Biochemical Activity), Cdkn1b (Two-hybrid), Cdkn1b (Affinity Capture-Western), CDKN1B (Reconstituted Complex), SPDYA (Reconstituted Complex), SPDYA (Affinity Capture-Western), SPDYA (Affinity Capture-Western), SPDYA (Two-hybrid), CDK5 (Two-hybrid), AQP1 (Two-hybrid), SPDYA (Affinity Capture-RNA), CDK1 (Affinity Capture-Western)

ESM2 similar proteins: A0A494C086, A0A494C0Z2, A0A494C191, A0JPH4, A6NHP3, A6NIY4, A6NJR5, A6NLX3, A6NNV3, A6QLI5, B0BNE4, O08918, O60543, O70302, O75916, P0CI01, P0DTA3, P0DUD1, P0DUD2, P0DUD3, P0DUD4, P0DUX0, P0DUX1, P0DV79, P24864, P39949, P49805, Q12967, Q495Y7, Q495Y8, Q4VXA5, Q4ZIN3, Q5IBH6, Q5IBH7, Q5MJ70, Q5SYB0, Q5XIQ2, Q5ZJR9, Q61457, Q6AYG1

Diamond homologs: A0A494C086, A0A494C0Z2, A0A494C191, A6NHP3, A6NIY4, A6NJR5, A6NKU9, A6NLX3, A6NNV3, P0CI01, P0DTA3, P0DUD1, P0DUD2, P0DUD3, P0DUD4, P0DUX0, P0DUX1, P0DV79, Q495Y7, Q495Y8, Q5IBH6, Q5IBH7, Q5MJ68, Q5MJ70, Q8NFV5, Q8R496, Q9PU13, Q9YGL1

SIGNOR signaling

2 interactions.

AEffectBMechanism
SUN1“up-regulates activity”SPDYAbinding
SPDYA“up-regulates activity”CDK2relocalization

Disease & clinical

Clinical variants and AI predictions

ClinVar

36 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance28
Likely benign2
Benign1

Top pathogenic / likely-pathogenic (0)

SpliceAI

1951 predictions. Top by Δscore:

VariantEffectΔscore
2:28783899:A:AGacceptor_gain1.0000
2:28783900:T:Gacceptor_gain1.0000
2:28783902:TATA:Tacceptor_loss1.0000
2:28783903:ATAG:Aacceptor_gain1.0000
2:28783904:TA:Tacceptor_loss1.0000
2:28783905:A:AGacceptor_gain1.0000
2:28783905:AG:Aacceptor_gain1.0000
2:28783905:AGG:Aacceptor_loss1.0000
2:28783906:G:GTacceptor_gain1.0000
2:28783906:GG:Gacceptor_gain1.0000
2:28783906:GGA:Gacceptor_gain1.0000
2:28783906:GGAT:Gacceptor_gain1.0000
2:28783906:GGATT:Gacceptor_gain1.0000
2:28783974:TACAG:Tdonor_gain1.0000
2:28783975:ACAG:Adonor_gain1.0000
2:28783975:ACAGG:Adonor_loss1.0000
2:28783976:CAG:Cdonor_gain1.0000
2:28783976:CAGGT:Cdonor_loss1.0000
2:28783977:AG:Adonor_gain1.0000
2:28783977:AGG:Adonor_loss1.0000
2:28783978:GG:Gdonor_gain1.0000
2:28783979:G:GAdonor_loss1.0000
2:28783979:G:GGdonor_gain1.0000
2:28788653:TAAA:Tacceptor_loss1.0000
2:28788656:A:ACacceptor_loss1.0000
2:28788755:AGTC:Adonor_gain1.0000
2:28793857:TGACA:Tacceptor_loss1.0000
2:28793858:GACA:Gacceptor_loss1.0000
2:28793859:ACAGG:Aacceptor_loss1.0000
2:28793860:CA:Cacceptor_loss1.0000

AlphaMissense

2079 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
2:28840202:T:AW195R1.000
2:28840202:T:CW195R1.000
2:28829153:T:CL129P0.999
2:28829156:C:AA130D0.999
2:28829206:T:AW147R0.999
2:28829206:T:CW147R0.999
2:28829208:G:CW147C0.999
2:28829208:G:TW147C0.999
2:28829267:T:CL167P0.999
2:28840204:G:CW195C0.999
2:28840204:G:TW195C0.999
2:28840210:A:CR197S0.999
2:28840210:A:TR197S0.999
2:28819080:G:CD90H0.998
2:28819102:A:TD97V0.998
2:28822335:C:AA102D0.998
2:28822360:G:CR110S0.998
2:28822360:G:TR110S0.998
2:28822407:C:AA126D0.998
2:28822410:T:CL127P0.998
2:28829201:T:CF145S0.998
2:28829224:T:AW153R0.998
2:28829224:T:CW153R0.998
2:28829246:T:CF160S0.998
2:28829259:G:CR164S0.998
2:28829259:G:TR164S0.998
2:28829269:T:AW168R0.998
2:28829269:T:CW168R0.998
2:28840209:G:CR197T0.998
2:28840214:C:AR199S0.998

dbSNP variants (sampled 300 via entrez): RS1000034166 (2:28822255 A>G), RS1000096406 (2:28826071 G>A), RS1000121486 (2:28830039 T>C), RS1000239799 (2:28810701 G>C,T), RS1000311080 (2:28846203 G>A), RS1000328592 (2:28811587 C>A,T), RS1000416587 (2:28838782 G>A), RS1000547338 (2:28832314 C>A,T), RS1000572239 (2:28810937 G>A,C), RS1000637300 (2:28817078 A>C), RS1000789600 (2:28846340 G>A), RS1000861126 (2:28816672 C>G), RS1000872430 (2:28817090 A>G), RS1000985909 (2:28824483 A>C), RS1001120958 (2:28824765 G>A)

Disease associations

OMIM: gene MIM:614029 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

1 associations (top):

StudyTraitp-value
GCST007656_7Chronic obstructive pulmonary disease or resting heart rate (pleiotropy)9.000000e-12

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

PharmGKB variants

1 variants.

VariantGenesLevelScore#Clin annotsDrugs
rs12474420SPDYA0.000

CTD chemical–gene interactions

20 total (human), top 20 by PubMed support.

ChemicalActions (top 5)PubMed papers
Cadmium Chloridedecreases expression, increases abundance2
aristolochic acid Iincreases expression1
tris(2-butoxyethyl) phosphateaffects expression1
aflatoxin B2increases methylation1
di-n-butylphosphoric acidaffects expression1
2-palmitoylglycerolincreases expression1
licochalcone Bincreases expression1
jinfukangdecreases expression1
theaflavin-3,3’-digallateaffects expression1
Benzo(a)pyreneaffects methylation1
Cadmiumdecreases expression, increases abundance1
Cisplatindecreases expression1
Dichlorodiphenyl Dichloroethylenedecreases expression1
Diethylhexyl Phthalateincreases expression1
Malathionincreases expression1
Phthalic Acidsincreases methylation1
Smokedecreases expression1
Dihydrotestosteroneincreases expression1
Tobacco Smoke Pollutionincreases expression1
Acrylamideincreases expression1

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.

No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.