Coiled-coil domain-containing protein 144A is a protein that in humans is encoded by the CCDC144A gene.[1] An alias of this gene is called KIAA0565. There are four members of the CCDC family: CCDC 144A, 144B, 144C and putative CCDC 144 N-terminal like proteins.[2]
Gene
This gene has a nucleotide sequence that is 5140 bp long, and it encodes 641 amino acids.[3] It is found on the short arm, plus (forward) strand of chromosome 17 at p11.2.[4][5] The mRNA for the CCDC144A gene has 3 alternative splicing isoforms named A2RUR9-1, A2RUR9-2, AND A2RUR9-3, but there is no experimental confirmation available yet.[6]
Protein
This protein for this gene is also known as coiled coil domain containing 144A (CCDC144A) protein. It consists of 641 amino acids.[7] This protein weighs 75.8 kDa and has an isoelecric point of 6.357.[8] This protein localizes near the nucleus,[9] and is a soluble protein with a hydrophobicity of -1.021842.[10] This protein is also non-secretory[11] and has 10 potential serine and 3 potential threonine phosphorylation sites.[12] There are no tyrosine sulfation sites,[13] but there are a few potential sumoylation sites on this protein.[14][15] Also, this protein is predicted to be non-myristoylated[16] and does not contain a signal peptide.[11][17]
Structure
This protein has a domain of unknown function (DUF) 3496, which has been conserved in eukaryotes.[18] The DUF3496 domain is found from amino acids 547-622.[7]
CCDC144A, an alias of this gene, indicates that there should be a coiled coil domain within the protein. Coiled coils are structural motifs in proteins in which 2 more alpha helices are coiled together, and they usually contain a heptad repeat, hxxhcxc, or hydrophobic (h) and charge (c) amino acid residues.[5] The 5' and 3' untranslated regions of the nucleotide sequence of this gene are rich in stem-loop structures.[19] In place of a coiled coil, a leucine zipper was found.[9] Residues from 478-499, "LHNTRDALGRESLILERVQRDL", are the residues that form the leucine zipper pattern.[9] The structure of this protein consists of mostly alpha helices, with some random coils.[20]
Evolution
Number |
Species
|
1 |
Nine-banded armadillo
|
2 |
Cow
|
3 |
Flying fox
|
4 |
Mouse eared bat
|
5 |
Chimpanzee
|
6 |
Treeshrew
|
7 |
House mouse
|
8 |
Chinese hamster
|
9 |
Naked mole rat
|
10 |
Rhesus monkey
|
11 |
Crab-eating macaque
|
12 |
Human KIAA0565
|
13 |
Platypus
|
14 |
Western clawed frog
|
15 |
Pufferfish
|
16 |
Carolina anole
|
17 |
Zebra finch
|
Orthologs of KIAA0565 protein have been identified mostly in mammals, but some birds, reptiles, amphibians, and fish as well.[21]
Potential Orthologs
Protein name |
Genus and species |
Common name |
Ortholog space |
Query cover (%) |
Max identity (%) |
Accession number
|
CCDC 144A |
Macaca fasicularis |
Crab-eating macaque |
0 |
97 |
86 |
EHH57800.1[7]
|
CCDC 144A, Partial |
Macaca mulatta |
Rhesus monkey |
0 |
97 |
86 |
EHH24608.1[7]
|
ANKRD 26 |
Pan troglodytes |
Common chimpanzee |
2e-160 |
96 |
67 |
JAA07196.1[7]
|
ANKRD 26, Predicted |
Dasypus novemcinctus |
Nine-banded armadillo |
1e-158 |
96 |
65 |
XP_004470808.1[7]
|
ANKRD 26 |
Myotis davidii |
Mouse eared bat |
2e-154 |
96 |
64 |
ELK35935.1[7]
|
ANKRD 26 |
Bos taurus |
Cow |
2e-157 |
96 |
63 |
NP_001107239.1[7]
|
ANKRD 26 |
Tupaia chinensis |
Treeshrew |
3e-147 |
96 |
62 |
ELW73004.1[7]
|
ANKRD 26 |
Cricetulus griseus |
Chinese hamster |
1e-145 |
96 |
60 |
EGW08323.1[7]
|
ANKRD 26 |
Heterocephalus glaber |
Naked mole rat |
2e-138 |
96 |
59 |
EHB01988.1[7]
|
ANKRD 26 |
Mus musculus |
House mouse |
4e-141 |
96 |
57 |
NP_001074581.1[7]
|
ANKRD 26, Partial |
Pteropus alecto |
Black flying fox |
2e-171 |
97 |
51 |
ELK03279.1[7]
|
ANKRD 26-Like, Predicted |
Ornithorhynchus anatinus |
Platypus |
2e-108 |
96 |
51 |
XP_001509663.2[7]
|
ANKRD 26-Like, Predicted |
Taeniopygia guttata |
Zebra finch |
3e-88 |
92 |
45 |
XP_004177264.1[7]
|
ANKRD 26-Like, Predicted |
Anolis carolinensis |
Carolina anole |
2e-75 |
97 |
44 |
XP_003221333.1[7]
|
ANKRD 26, Predicted |
Xenopus tropicalis |
Western clawed frog |
2e-78 |
98 |
44 |
XP_002935004.1[7]
|
Unnamed Protein Product |
Tetraodon nigroviridis |
Pufferfish |
1e-28 |
98 |
34 |
CAF98417.1[7]
|
[21]
Clinical significance
This gene has been linked to Smith-Magenis Syndrome (SMS), which is also known as chromosome 17p11.2 deletion syndrome,[22] chromosome 17p deletion syndrome,[23] deletion 17p syndrome,[23] partial monosomy 17p,[23] and deletion abnormality.[24][25]
Interacting proteins
There may potentially be two proteins that interact with KIAA0565, and they are ubiquitin specific peptidase 32 (USP32) and ubiquitin specific peptidase 25 (USP25).[26]
Expression
This protein has been shown to have relatively low expression in all tissues.[27]
References
External links