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  Domain Name: PK_STRAD
Pseudokinase domain of STE20-related kinase adapter protein. Protein Kinase family, STE20-related kinase adapter protein (STRAD) subfamily, pseudokinase domain. The STRAD subfamily is part of a larger superfamily that includes the catalytic domains of serine/threonine kinases (STKs), protein tyrosine kinases, RIO kinases, aminoglycoside phosphotransferase, choline kinase, and phosphoinositide 3-kinase. The pseudokinase domain shows similarity to protein kinases but lacks crucial residues for catalytic activity. STRAD forms a complex with the scaffolding protein MO25, and the STK, LKB1, resulting in the activation of the kinase. In the complex, LKB1 phosphorylates and activates adenosine monophosphate-activated protein kinases (AMPKs), which regulate cell energy metabolism and cell polarity. LKB1 is a tumor suppressor linked to the rare inherited disease, Peutz-Jeghers syndrome, which is characterized by a predisposition to benign polyps and hyperpigmentation of the buccal mucosa. There are two forms of STRAD, alpha and beta, that complex with LKB1 and MO25. The structure of STRAD-alpha is available and shows that this protein binds ATP, has an ordered activation loop, and adopts a closed conformation typical of fully active protein kinases. It does not possess activity due to nonconservative substitutions of essential catalytic residues. ATP binding enhances the affinity of STRAD for MO25. The conformation of STRAD-alpha stabilized through ATP and MO25 may be needed to activate LKB1.
No pairwise interactions are available for this conserved domain.

Total Mutations Found: 312
Total Disease Mutations Found: 139
This domain occurred 268 times on human genes (606 proteins).



  ADENOCARCINOMA OF LUNG, SOMATIC
  BLADDER CANCER, SOMATIC, INCLUDED
  BREAST CANCER, SUSCEPTIBILITY TO
  CAMPTODACTYLY, TALL STATURE, AND HEARING LOSS SYNDROME
  CARDIOFACIOCUTANEOUS SYNDROME 1
  CARDIOFACIOCUTANEOUS SYNDROME 3
  CARDIOFACIOCUTANEOUS SYNDROME 4
  CHRONIC MYELOID LEUKEMIA, RESISTANT TO IMATINIB
  COLON CANCER, SOMATIC
  COLORECTAL CANCER, SOMATIC
  COLORECTAL CANCER, SOMATIC, INCLUDED;;
  DIABETES MELLITUS, INSULIN-RESISTANT, WITH ACANTHOSIS NIGRICANS
  DIABETES MELLITUS, NONINSULIN-DEPENDENT
  DIABETES MELLITUS, TYPE II
  ENDOCRINE-CEREBROOSTEODYSPLASIA
  EPILEPTIC ENCEPHALOPATHY, EARLY INFANTILE, 2
  FG SYNDROME 4
  GLYCOGEN STORAGE DISEASE IXC
  HEPATOCELLULAR CARCINOMA, CHILDHOOD TYPE, SOMATIC
  HIRSCHSPRUNG DISEASE, SUSCEPTIBILITY TO, 1
  HYPERINSULINEMIC HYPOGLYCEMIA, FAMILIAL, 5
  HYPOCHONDROPLASIA
  INSULIN RESISTANCE
  INSULIN RESISTANCE, INCLUDED
  IRAK4 DEFICIENCY
  LADD SYNDROME
  LEUKEMIA, PHILADELPHIA CHROMOSOME-POSITIVE, RESISTANT TO IMATINIB
  LYMPHOMA, NON-HODGKIN, SOMATIC
  LYMPHOPROLIFERATIVE SYNDROME 1
  MALFORMATIONS
  MEGALENCEPHALY-POLYMICROGYRIA-POLYDACTYLY-HYDROCEPHALUS SYNDROME
  MELANOMA, MALIGNANT, SOMATIC
  MENTAL RETARDATION AND MICROCEPHALY WITH PONTINE AND CEREBELLAR HYPOPLASIA
  MENTAL RETARDATION, X-LINKED 30
  MENTAL RETARDATION, X-LINKED, WITH NYSTAGMUS
  MULTIPLE ENDOCRINE NEOPLASIA, TYPE IIA
  MULTIPLE ENDOCRINE NEOPLASIA, TYPE IIB
  MULTIPLE MYELOMA, SOMATIC, INCLUDED;;
  NEPHRONOPHTHISIS 9 (NPHP9)
  NEUROPATHY, HEREDITARY SENSORY, TYPE II
  NOONAN SYNDROME 7
  OBESITY, HYPERPHAGIA, AND DEVELOPMENTAL DELAY
  OGUCHI DISEASE 2
  PHEOCHROMOCYTOMA, INCLUDED
  PHEOCHROMOCYTOMA, SOMATIC, IN
  PROSTATE CANCER, PROGRESSION AND METASTASIS OF
  RENAL AGENESIS
  RENAL CELL CARCINOMA, PAPILLARY, 1
  RENAL CELL CARCINOMA, PAPILLARY, 1, SOMATIC
  RETINITIS PIGMENTOSA 38
  RETINITIS PIGMENTOSA 62
  RETINITIS PIGMENTOSA 62 (RP62)
  SADDAN DYSPLASIA
  SHORT RIB-POLYDACTYLY SYNDROME, TYPE IIA
  SPERMATOCYTIC SEMINOMA, SOMATIC, INCLUDED
  SPERMATOGENIC FAILURE 5
  T-CELL IMMUNODEFICIENCY, RECURRENT INFECTIONS, AUTOIMMUNITY, AND CARDIAC
  THANATOPHORIC DYSPLASIA, TYPE I
  THANATOPHORIC DYSPLASIA, TYPE I, INCLUDED
  THANATOPHORIC DYSPLASIA, TYPE II
  THYROID CARCINOMA, FAMILIAL MEDULLARY
  THYROID CARCINOMA, FAMILIAL MEDULLARY, INCLUDED
  THYROID CARCINOMA, FOLLICULAR, SOMATIC, INCLUDED
  THYROID CARCINOMA, PAPILLARY, SOMATIC, INCLUDED;;|
  THYROID CARCINOMA, SPORADIC MEDULLARY, INCLUDED;;
  VENOUS MALFORMATIONS, MULTIPLE CUTANEOUS AND MUCOSAL


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Range on the Protein:  

   Protein ID            Protein Position

Domain Position:  


Feature Name:Total Found:
ATP binding site
MO25 interaction site
LKB1 interaction site