Descriptions

CCNDBP1 (Cyclin-D1-binding protein 1) is a dominant-negative helix-loop-helix (dnHLH) protein, which lacks DNA-binding ability and captures basic HLH transcription factors to inhibit cellular differentiation and enhance cell proliferation and motility. In the structure of a free-standing human CCNDBP1, CCNDBP1 adopts a V-shaped conformation, with N-terminal and C-terminal five-helix bundles connected by the HLH region. The HLH region is extended, with its hydrophobic dimerization interfaces embedded in the N- and C-terminal helix bundles. CCNDBP1 exists in slow equilibrium between the V-shaped form and the partially unfolded, relaxed form. The latter form is readily available for interactions with its target bHLH transcription factors. Mutations disrupting the interactions in the V-shaped form compromise the target transcription factor specificity.

Autoinhibitory domains (AIDs)

Target domain

295-377 (GAF a domain)

Relief mechanism

Ligand binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for P0C1Q2

Entry ID Method Resolution Chain Position Source
AF-P0C1Q2-F1 Predicted AlphaFoldDB

34 variants for P0C1Q2

Variant ID(s) Position Change Description Diseaes Association Provenance
rs3388563323 59 S>N No EVA
rs3388554254 94 A>V No EVA
rs3388554290 99 S>N No EVA
rs3388554290 99 S>T No EVA
rs3388561248 104 S>C No EVA
rs3388556200 105 G>D No EVA
rs3388562060 159 R>G No EVA
rs3388560895 196 L>I No EVA
rs3388559714 204 F>L No EVA
rs3391773001 209 V>* No EVA
rs3388557810 227 I>N No EVA
rs3391832497 230 C>S No EVA
rs3388563257 271 S>G No EVA
rs3391798518 355 D>V No EVA
rs3388563271 371 S>F No EVA
rs3388563411 397 F>S No EVA
rs3388561220 480 A>T No EVA
rs27963339 499 A>T No EVA
rs3388563288 534 L>F No EVA
rs3388559748 546 L>P No EVA
rs3388562047 607 A>T No EVA
rs3388561021 636 M>I No EVA
rs3388556551 678 A>P No EVA
rs3391768786 699 V>E No EVA
rs3410289562 718 K>R No EVA
rs3391625618 780 Y>N No EVA
rs3411762483 801 T>I No EVA
rs3388557750 852 T>A No EVA
rs3388556545 859 R>G No EVA
rs3388557745 859 R>Q No EVA
rs3388556189 864 E>V No EVA
rs3388552549 881 Y>* No EVA
rs3388561080 882 Q>R No EVA
rs3388552554 909 H>L No EVA

No associated diseases with P0C1Q2

5 regional properties for P0C1Q2

Type Name Position InterPro Accession
domain Arf GTPase activating protein 405 - 527 IPR001164
domain Pleckstrin homology domain 265 - 362 IPR001849
repeat Ankyrin repeat 588 - 671 IPR002110-1
repeat Ankyrin repeat 672 - 702 IPR002110-2
domain BAR domain 5 - 237 IPR004148

Functions

Description
EC Number
Subcellular Localization
  • Cytoplasm
  • Nucleus
PANTHER Family PTHR15492 CYCLIN D1-BINDING PROTEIN 1
PANTHER Subfamily PTHR15492:SF4 CYCLIN-D1-BINDING PROTEIN 1
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

2 GO annotations of cellular component

Name Definition
cytosol The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
perikaryon The portion of the cell soma (neuronal cell body) that excludes the nucleus.

6 GO annotations of molecular function

Name Definition
3',5'-cyclic-AMP phosphodiesterase activity Catalysis of the reaction
3',5'-cyclic-GMP phosphodiesterase activity Catalysis of the reaction
cGMP binding Binding to cGMP, the nucleotide cyclic GMP (guanosine 3',5'-cyclophosphate).
cGMP-stimulated cyclic-nucleotide phosphodiesterase activity Catalysis of the reaction
cyclic-nucleotide phosphodiesterase activity Catalysis of the reaction
metal ion binding Binding to a metal ion.

4 GO annotations of biological process

Name Definition
cAMP-mediated signaling Any intracellular signal transduction in which the signal is passed on within the cell via cyclic AMP (cAMP). Includes production of cAMP, and downstream effectors that further transmit the signal within the cell.
metabolic process The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.
negative regulation of cAMP-mediated signaling Any process which stops, prevents, or reduces the frequency, rate or extent of cAMP-mediated signaling.
negative regulation of cGMP-mediated signaling Any process that decreases the rate, frequency or extent of cGMP-mediated signaling.

32 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
Q28156 PDE5A cGMP-specific 3',5'-cyclic phosphodiesterase Bos taurus (Bovine) SS
P23439 PDE6B Rod cGMP-specific 3',5'-cyclic phosphodiesterase subunit beta Bos taurus (Bovine) PR
P52731 PDE6C Cone cGMP-specific 3',5'-cyclic phosphodiesterase subunit alpha' Gallus gallus (Chicken) PR
H2QL32 PDE9A High affinity cGMP-specific 3',5'-cyclic phosphodiesterase 9A Pan troglodytes (Chimpanzee) PR
Q9W4T4 dnc 3',5'-cyclic-AMP phosphodiesterase, isoform I Drosophila melanogaster (Fruit fly) SS
Q9VJ79 Pde11 Dual 3',5'-cyclic-AMP and -GMP phosphodiesterase 11 Drosophila melanogaster (Fruit fly) SS
O76083 PDE9A High affinity cGMP-specific 3',5'-cyclic phosphodiesterase 9A Homo sapiens (Human) PR
Q07343 PDE4B cAMP-specific 3',5'-cyclic phosphodiesterase 4B Homo sapiens (Human) EV SS
Q08499 PDE4D cAMP-specific 3',5'-cyclic phosphodiesterase 4D Homo sapiens (Human) EV
O76074 PDE5A cGMP-specific 3',5'-cyclic phosphodiesterase Homo sapiens (Human) EV
Q08493 PDE4C cAMP-specific 3',5'-cyclic phosphodiesterase 4C Homo sapiens (Human) EV SS
P51160 PDE6C Cone cGMP-specific 3',5'-cyclic phosphodiesterase subunit alpha' Homo sapiens (Human) PR
P27815 PDE4A cAMP-specific 3',5'-cyclic phosphodiesterase 4A Homo sapiens (Human) EV SS
P35913 PDE6B Rod cGMP-specific 3',5'-cyclic phosphodiesterase subunit beta Homo sapiens (Human) PR
Q9Y233 PDE10A cAMP and cAMP-inhibited cGMP 3',5'-cyclic phosphodiesterase 10A Homo sapiens (Human) PR
Q9HCR9 PDE11A Dual 3',5'-cyclic-AMP and -GMP phosphodiesterase 11A Homo sapiens (Human) SS
Q8CG03 Pde5a cGMP-specific 3',5'-cyclic phosphodiesterase Mus musculus (Mouse) SS
O89084 Pde4a 3',5'-cyclic-AMP phosphodiesterase 4A Mus musculus (Mouse) SS
Q3UEI1 Pde4c cAMP-specific 3',5'-cyclic phosphodiesterase 4C Mus musculus (Mouse) PR
Q01063 Pde4d 3',5'-cyclic-AMP phosphodiesterase 4D Mus musculus (Mouse) SS
O70628 Pde9a High affinity cGMP-specific 3',5'-cyclic phosphodiesterase 9A Mus musculus (Mouse) PR
Q8CA95 Pde10a cAMP and cAMP-inhibited cGMP 3',5'-cyclic phosphodiesterase 10A Mus musculus (Mouse) PR
P23440 Pde6b Rod cGMP-specific 3',5'-cyclic phosphodiesterase subunit beta Mus musculus (Mouse) PR
Q8QZV1 Pde9a High affinity cGMP-specific 3',5'-cyclic phosphodiesterase 9A Rattus norvegicus (Rat) PR
P14646 Pde4b cAMP-specific 3',5'-cyclic phosphodiesterase 4B Rattus norvegicus (Rat) SS
O54735 Pde5a cGMP-specific 3',5'-cyclic phosphodiesterase Rattus norvegicus (Rat) SS
P14644 Pde4c cAMP-specific 3',5'-cyclic phosphodiesterase 4C Rattus norvegicus (Rat) PR
P54748 Pde4a 3',5'-cyclic-AMP phosphodiesterase 4A Rattus norvegicus (Rat) SS
Q9QYJ6 Pde10a cAMP and cAMP-inhibited cGMP 3',5'-cyclic phosphodiesterase 10A Rattus norvegicus (Rat) PR
P14270 Pde4d cAMP-specific 3',5'-cyclic phosphodiesterase 4D Rattus norvegicus (Rat) PR
Q8VID6 Pde11a Dual 3',5'-cyclic-AMP and -GMP phosphodiesterase 11A Rattus norvegicus (Rat) SS
Q22000 pde-4 Probable 3',5'-cyclic phosphodiesterase pde-4 Caenorhabditis elegans PR
10 20 30 40 50 60
MASATAPAAA VPTLASPLEQ LRHLAEELRL LLPRVRVGEA QETTEEFNRE MFWRRLNEAA
70 80 90 100 110 120
VTVSREATTL TIVFSQLPLP SPQETQKFCE QVHAAIKAFI AVYYLLPKDQ GITLRKLVRG
130 140 150 160 170 180
ATLDIVDGMA QLMEVLSVTP TQSPENNDLI SYNSVWVACQ QMPQIPRDNK AAALLMLTKN
190 200 210 220 230 240
VDFVKDAHEE MEQAVEECDP YSGLLNDTEE NNSDNHNHED DVLGFPSNQD LYWSEDDQEL
250 260 270 280 290 300
IIPCLALVRA SKACLKKIRM LVAENGKKDQ VAQLDDIVDI SDEISPSVDD LALSIYPPMC
310 320 330 340 350
HLTVRINSAK LVSVLKKALE ITKASHVTPQ PEDSWIPLLI NAIDHCMNRI KELTQSELEL