Dedicator of cytokinesis 7 (DOCK7, KIAA1771, ZIR2)






GENOMIC

Mapping

1p31.3. View the map and BAC clones (data from UCSC genome browser).

Structure

(assembly 03/2006)
DOCK7 (NM_033407): 49 exons, 233,573 bp, chr1:62,692,985-62,926,557.

The figure below shows the structure of the DOCK7 gene (data from UCSC genome browser).

Regulatory Element






TRANSCRIPT

RefSeq/ORF

DOCK7 (NM_033407), 7,063 bp, view ORF and the alignment to genomic.

Expression Pattern

Widely expressed. Highly expressed in the brain. View more information in Entrez Gene, or UCSC Gene Sorter, or GeneCards.






PROTEIN

Sequence

DOCK7 (Dedicator of cytokinesis protein 7, KIAA1771) (NP_212132): 2109 aa, 6 isoforms have been reported. UniProtKB/Swiss-Prot entry Q98N67.

Ortholog

View NCBI HomoloGene of DOCK7.

Domain

Domain: Pfam:PF06920.
Two domains are shared amongst all DOCK proteins, the catalytic DHR-2 (DOCK homology region 2) or CZH-2 (CDM-zizimin homology 2) domain and the DHR-1 or CZH-1domain. For all DOCK proteins, the DHR-1 domain is located N-terminal to the DHR-2 domain. The DHR-1 domain is probably involved in the binding with PtdIns, while the DHR-2 domain may be responsible for the GEF activity through the interaction with Rho GTPase.

Motif/Site

View annotated motifs in UniProt.

3D Model

ModBase predicted 3D structure of Q96N67 from UCSC Gene Sorter: (none).

2D-PAGE

This protein does not exist in the current release of SWISS-2DPAGE.
Computed theoretical MW=239,422Da, pI=6.34.






FUNCTION

Ontology

(1) Biological process: differentiation, neurogenesis.
(2) Guanine-nucleotide releasing factor, guanyl-nucleotide exchange factor activity.
(3) GTP binding, Rac GTPase binding.
(4) Regulation of pigmentation during development.

Location

Cell projection.

Interaction

Interacts with TSC1. Interacts with nucleotide-free RAC1 and RAC3.

View interactions in HPRD

View co-occured partners in literature searched by PPI Finder.

Pathway

Functions as a guanine nucleotide exchange factor (GEF), which activates Rac and Cdc42 small GTPases by exchanging bound GDP for free GTP. Does not have a GEF activity for RhoA. Required for STMN1 'Ser-15' phosphorylation during axon formation and consequently for neuronal polarization.






MUTATION

Allele or SNP

No mutations deposited in HGMD.
SNPs deposited in dbSNP.

Distribution

(none)

Effect

(none)






PHENOTYPE

Mutaitons of Dock7 in mice cause the phenotype of white belly spots in misty(m) and moonlight (mnlt) (Blasius et al.). More details has been described in Mutagenetix.






REFERENCE

  1. Blasius AL, Brandl K, Crozat K, Xia Y, Khovananth K, Krebs P, Smart NG, Zampolli A, Ruggeri ZM, Beutler BA. Mice with mutations of Dock7 have generalized hypopigmentation and white-spotting but show normal neurological function. Proc Natl Acad Sci U S A 2009; 106:2706-11. PMID: 19202056

EDIT HISTORY:

Created by Wei Li, 04/30/2009