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Coiled-Coil Domain Containing 69, also known as CCDC69 is a protein-coding gene. A significant paralog of CCDC69 is MTUS1.

Coiled-Coil Domain Containing 25 (CCDC25) is a 208 amino acid protein belonging to the CCDC25 family.

Coiled-Coil Domain Containing 43 (CCDC43) which is a member of the CCDC43 family is a human protein whose function is currently not understood. Coding sequence diversity are two isoforms produced by alternative splicing. Isoform 1 has been chosen as the 'canonical' sequence.

Coiled-coil-helix-coiled-coil-helix domain containing 3 (CHCHD3), is a protein-coding gene. CHCHD3 is essential for maintenance of mitochondrial crista integrity and mitochondrial function. . In addition, CHCHD3 may perform as a scaffolding protein that stabilizes protein complexes involved in crista architecture and protein import. CHCHD3 may also act as a transcription factor which binds to the BAG1 promoter and represses BAG1 transcription. Lung cancer has been associated with CHCHD3.

CCDC101 is known as a subunit of the SAGA (Spt-Ada-Gcn5 acetyltransferase) histone acetyltransferase complex in Saccharomyces cerevisiae. CCDC101 is conserved from yeast to humans.

Coiled-Coil Domain Containing 90B (CCDC90B) is a member of the CCDC90 family. The CCDC90B protein is distinguished by the presence of a domain of unknown function, DUF1640. The DUF1640 domain is a characteristic of the entire protein with excluding of the first 23 amino acid residues which are a mitochondrial targeting site and the cleaved CCDC90B is expected to be a mitochondrial protein with no transmembrane spans or segments. CCDC90B is predicted to contain at least 3 specific phospohorylation sites.

Coiled-Coil Domain Containing 23, also known as CCDC23 is a 66 amino acid protein which is encoded by a gene mapping tohuman chromosome 1. Chromosome 1 is the biggest human chromosome spanning approximately 260 million base pairsand making up 8% of the human genome. In addition, there are about 3,000 genes on chromosome 1, and taking into account thehuge number of genes there are also a big number of diseases connected with chromosome 1. One of the diseasesthat have been associated with CCDC23 is endotheliitis.

CCDC104 also known as coiled-coil domain-containing protein 104 is a 342 amino acid protein that exists as two alternatively spliced isoforms. CCDC104 undergoes post-translational phosphorylation following DNA damage, most likely by either ATR or ATM. Among the diseases associated with CCDC104 are pancreatic cancer, and pancreatitis.

Coiled-Coil-Helix-Coiled-Coil-Helix Domain Containing 7, also known as CHCHD7 is a newly recognized member of a multifamily of proteins which contains a conserved (coiled coil 1)-(helix 1)-(coiled coil 2)-(helix 2) domain. The biological function of CHCHD7 is unknown and the gene has up till now not been connected with neoplasia. In addition, CHCHD7 & PLAG1 are located head-to-head about 500 bp apart in 8q12. Molecular analyses of twenty seven tumors exposed CHCHD7-PLAG1 fusions in three tumors, two of them had t(6;8) and t(8;15) translocations as a singular anomalies and one a normal karyotype.

Cytohesin 3 (CYTH3) belongs to the PSCD family, whose members have identical structural organization which consists of an N-terminal coiled-coil motif, a central Sec7 domain, and a C-terminal pleckstrin homology (PH) domain, and seem to mediate the regulation of protein sorting and membrane trafficking. CYTH3 is involved in the regulation of Golgi structure and function, and it might have a physiological role in regulating ADP-ribosylation factor protein 6 (ARF) functions, in addition to acting on ARF1.

Sperm Antigen With Calponin Homology And Coiled-Coil 1 (SPECC1) which is a part of the cytospin-A family takes part in cytokinesis and spindle organization. SPECC1 takes part in actin cytoskeleton organization and microtubule stabilization and therefore necessary for proper cell adhesion and migration.

HAUS augmin-like complex subunit 1 (HAUS1) is 1 of 8 subunits of the 390kDa human augmin complex/ HAUS complex. The augmin complex is a microtubule-binding complex required in microtubule generation within the mitotic spindle and is imperative to mitotic spindle compilation. HAUS1 contributes to mitotic spindle assembly, maintenance of centrosome integrity and completion of cytokinesis as part of the HAUS augmin-like complex. HAUS1 is broadly expressed, especially in the pancreas, kidney, skeletal muscle, liver and heart. However it is weakly expressed in the lung, brain and placenta. HAUS1-depleted cells hold functional cell cycle checkpoints, but the depletion reduces the G2/M cell cycle compartment and stimulates apoptosis. The HAUS1 protein level remains constant through the cell cycle.

MORC Family CW-Type Zinc Finger 3 (MORC3) localizes to the nuclear matrix. MORC3 takes part in the regulation of the tumor suppressor protein p53. MORC3may indicate on dermatomyositis (DM) as autoantibodies against this protein have been found in patients.

Translational activator of mitochondrially encoded cytochrome c oxidase I (TACO1) belongs to the TACO1 family. TACO1 is a mitochondrial protein which functions as a translational activator of mitochondrially-encoded cytochrome c oxidase 1. Mutations in this gene are associated with Leigh syndrome.

Cytohesin 1 also known as CYTH1 belongs to the PSCD family. CYTH1 is responsible for promoting guanine-nucleotide exchange on ARF1 and ARF5 and also promotes the activation of ARF factors by the replacement of GDP with GTP.

Cytochrome c oxidase assembly factor 4 (COA4) is the last enzyme of the mitochondrial respiratory chain which needs a great number of accessory factors. COA4 is vital for oxidative phosphorylation and comprises multiple complexes including cytochrome c oxidase, assembled in macromolecular supercomplexes. COX4 is a protein-coding gene which defect in it causes an acute human encephalomyopathies.

Cytohesin-interacting protein, also known as CYTIP contains 2 leucine zipper domains as well as a putative C-terminal nuclear targeting signal. However, CYTIP does not contain any hydrophobic regions. In addition, CYTIP is expressed weakly in resting NK and T cells. It also modulates the activation of ARF genes by CYTH1.

CUE Domain Containing 1, also know as CUEDC1 contains 1 CUE domain. The CUE domain is structurally associated to the ubiquitin-binding UBA domain and exists as a domain-swapped dimer which makes additional contacts with ubiquitin, and as a result, binds ubiquitin with higher affinity. The CUE domain is discovered in proteins with diverse functions including protein sorting and degradation of misfolded proteins in the endoplasmic reticulum.

IFIH1 is a DEAD box protein which is upregulated in response to treatment with beta-interferon and a protein kinase C-activating compound, mezerein. Irreversible reprogramming of melanomas can be attained by therapy with both these agents; treatment with either agent alone only achieves reversible differentiation. DEAD box proteins are implicated in several cellular processes involving alteration of RNA secondary structure such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly.

Kelch Domain Containing 8B, also known as KLHDC8B shapes a distinct beta-propeller protein structure of kelch domains which allow for protein-protein interactions. In addition,mutations in KLHDC8B have been connected with Hodgkin lymphoma.

ANKRD1 takes part in endothelial cell activation and performs as a nuclear transcription factor which negatively controls the expression of cardiac genes.

GIPC1 is a PDZ domain protein that cooperates with RGS-GAIP and the viral oncoprotein TAX, which transactivates viral and cellular promoters throughout interactions with different transcription factors. GIPC1 particularly localizes to clusters of vesicles close to the plasma membrane and takes part in G protein-coupled signaling pathway participating in regulating Clathrin-coated vesicular trafficking. GIPC1 cooperates with membrane bound Semaphorin F, which is takes part in neuronal axon growth, and controls the subcellular distribution of M-SemF in the brain.

DnaK, originally identified for its DNA replication by bacteriophage l in E. coli is the bacterial hsp70 chaperone. This protein is involved in the folding and assembly of newly synthesized polypeptide chains and in preventing the aggregation of stress-denatured proteins. Dnak(residues 508-638) of the substrate binding domain is a-helical and appears to act as a lid covering the substrate binding cleft. DnaK(amino acid 508-638) was purified to apparent homogeneity by using conventional column chromatography techniques. Additional amino acid (Met) is attached at N- terminus.

PDZK1 is a PDZ domain-containing scaffolding protein which facilitates localization of cell surface proteins and has a key part in cholesterol metabolism by regulating the HDL receptor, scavenger receptor class B type 1. Single nucleotide polymorphism in this gene is linked to metabolic syndrome, and overexpression results in drug resistance of multiple myeloma.