Function and Biology

Crystal Structure of the Dbl and Pleckstrin homology domains of Dbs in complex with RhoA

EC 3.6.5.2: Small monomeric GTPase

Reaction catalysed:
GTP + H(2)O = GDP + phosphate
Systematic name:
GTP phosphohydrolase (cell-regulating)

GO terms

Biochemical function:
Biological process:
Cellular component:

Sequence families

Pfam Protein families (Pfam)
PF00071
Domain description: Ras family
Occurring in:
  1. Transforming protein RhoA
The deposited structure of PDB entry 1lb1 contains 4 copies of Pfam domain PF00071 (Ras family) in Transforming protein RhoA. Showing 1 copy in chain B.

PF22697
Domain description: SOS1/NGEF-like PH domain
Occurring in:
  1. Guanine nucleotide exchange factor DBS

PF00621
Domain description: RhoGEF domain
Occurring in:
  1. Guanine nucleotide exchange factor DBS
The deposited structure of PDB entry 1lb1 contains 4 copies of Pfam domain PF00621 (RhoGEF domain) in Guanine nucleotide exchange factor DBS. Showing 1 copy in chain A.

InterPro InterPro annotations
IPR000219
Domain description: Dbl homology (DH) domain
Occurring in:
  1. Guanine nucleotide exchange factor DBS
IPR001806
Domain description: Small GTPase
Occurring in:
  1. Transforming protein RhoA
IPR001849
Domain description: Pleckstrin homology domain
Occurring in:
  1. Guanine nucleotide exchange factor DBS
IPR027417
Domain description: P-loop containing nucleoside triphosphate hydrolase
Occurring in:
  1. Transforming protein RhoA
IPR035899
Domain description: Dbl homology (DH) domain superfamily
Occurring in:
  1. Guanine nucleotide exchange factor DBS
IPR005225
Domain description: Small GTP-binding domain
Occurring in:
  1. Transforming protein RhoA
IPR003578
Domain description: Small GTPase Rho
Occurring in:
  1. Transforming protein RhoA
IPR035534
Domain description: DBS, PH domain
Occurring in:
  1. Guanine nucleotide exchange factor DBS
IPR011993
Domain description: PH-like domain superfamily
Occurring in:
  1. Guanine nucleotide exchange factor DBS
IPR001331
Domain description: Guanine-nucleotide dissociation stimulator, CDC24, conserved site
Occurring in:
  1. Guanine nucleotide exchange factor DBS

Structure domains

CATH CATH domains
3.40.50.300
Class: Alpha Beta
Architecture: 3-Layer(aba) Sandwich
Topology: Rossmann fold
Homology: P-loop containing nucleotide triphosphate hydrolases
Occurring in:
  1. Transforming protein RhoA
The deposited structure of PDB entry 1lb1 contains 4 copies of CATH domain 3.40.50.300 (Rossmann fold) in Transforming protein RhoA. Showing 1 copy in chain B.
2.30.29.30
Class: Mainly Beta
Architecture: Roll
Topology: PH-domain like
Homology: Pleckstrin-homology domain (PH domain)/Phosphotyrosine-binding domain (PTB)
Occurring in:
  1. Guanine nucleotide exchange factor DBS
The deposited structure of PDB entry 1lb1 contains 4 copies of CATH domain 2.30.29.30 (PH-domain like) in Guanine nucleotide exchange factor DBS. Showing 1 copy in chain A.
1.20.900.10
Class: Mainly Alpha
Architecture: Up-down Bundle
Topology: Dbl Homology Domain; Chain A
Homology: Dbl homology (DH) domain
Occurring in:
  1. Guanine nucleotide exchange factor DBS
The deposited structure of PDB entry 1lb1 contains 4 copies of CATH domain 1.20.900.10 (Dbl Homology Domain; Chain A) in Guanine nucleotide exchange factor DBS. Showing 1 copy in chain A.
SCOP SCOP annotations
52592
Class: Alpha and beta proteins (a/b)
Fold: P-loop containing nucleoside triphosphate hydrolases
Superfamily: P-loop containing nucleoside triphosphate hydrolases
Occurring in:
  1. Transforming protein RhoA
The deposited structure of PDB entry 1lb1 contains 4 copies of SCOP domain 52592 (G proteins) in Transforming protein RhoA. Showing 1 copy in chain B.
50730
Class: All beta proteins
Fold: PH domain-like barrel
Superfamily: PH domain-like
Occurring in:
  1. Guanine nucleotide exchange factor DBS
The deposited structure of PDB entry 1lb1 contains 4 copies of SCOP domain 50730 (Pleckstrin-homology domain (PH domain)) in Guanine nucleotide exchange factor DBS. Showing 1 copy in chain A.
48066
Class: All alpha proteins
Fold: DBL homology domain (DH-domain)
Superfamily: DBL homology domain (DH-domain)
Occurring in:
  1. Guanine nucleotide exchange factor DBS
The deposited structure of PDB entry 1lb1 contains 4 copies of SCOP domain 48066 (DBL homology domain (DH-domain)) in Guanine nucleotide exchange factor DBS. Showing 1 copy in chain A.