Recombinant Human Nephrocystin-1 (NPHP1), Truncated

Uniprot Id

O15259

Target Species

Human

Target Name

NPHP1

Target Full Name

Nephrocystin-1

Target Function

Together with BCAR1 it may play a role in the control of epithelial cell polarity. Involved in the organization of apical junctions in kidney cells together with NPHP4 and RPGRIP1L/NPHP8. Does not seem to be strictly required for ciliogenesis. Seems to help to recruit PTK2B/PYK2 to cell matrix adhesions, thereby initiating phosphorylation of PTK2B/PYK2 and PTK2B/PYK2-dependent signaling. May play a role in the regulation of intraflagellar transport (IFT) during cilia assembly. Required for normal retina development. In connecting photoreceptor cilia influences the movement of some IFT proteins such as IFT88 and WDR19. Involved in spermatogenesis.

Target Involvement

Nephronophthisis 1 (NPHP1); Senior-Loken syndrome 1 (SLSN1); Joubert syndrome 4 (JBTS4)

Target Subcellular Location

Cell junction. Cell junction, adherens junction. Cell projection, cilium. Cytoplasm, cytoskeleton, cilium axoneme. Cell junction, tight junction.

Target Protein Families

Nephrocystin-1 family

Target Tissue Specificity

Widespread expression, with highest levels in pituitary gland, spinal cord, thyroid gland, testis, skeletal muscle, lymph node and trachea. Weakly expressed in heart, kidney and pancreas. Expressed in nasal epithelial cells (at protein level). Expressed i

Target Research Area

Metabolism

Target Synonyms

JBTS4; Juvenile nephronophthisis 1 protein; Nephrocystin 1; Nephrocystin-1; nephronophthisis 1 (juvenile); Nephronophthisis; NPH1; NPHP1; NPHP1_HUMAN; SLSN1

Target Background

This gene encodes a protein with src homology domain 3 (SH3) patterns. This protein interacts with Crk-associated substrate, and it appears to function in the control of cell division, as well as in cell-cell and cell-matrix adhesion signaling, likely as part of a multifunctional complex localized in actin- and microtubule-based structures. Mutations in this gene cause familial juvenile nephronophthisis type 1, a kidney disorder involving both tubules and glomeruli. Defects in this gene are also associated with Senior-Loken syndrome type 1, also referred to as juvenile nephronophthisis with Leber amaurosis, which is characterized by kidney and eye disease, and with Joubert syndrome type 4, which is characterized by cerebellar ataxia, oculomotor apraxia, psychomotor delay and neonatal breathing abnormalities, sometimes including retinal dystrophy and renal disease. Multiple transcript variants encoding different isoforms have been found for this gene.