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Description
DHH Protein, HumanProduct Specification Species Human Synonyms rHuDHH; DHH; HHG 3 Accession O43323 Amino Acid Sequence Cys23 Gly198 Expression System E. coli Molecular Weight 20 kDa (Reducing) Purity 95% by SDS PAGE Endotoxin <0. 1EU g Conjugation Unconjugated Tag No Tag Physical Appearance Lyophilized Powder Storage Buffer PBS, pH7. 4. Reconstitution Reconstitute at 0. 1 1 mg ml according to the size in ultrapure water after rapid centrifugation. Stability & Storage
Product Specification
| Species | Human |
| Synonyms | rHuDHH; DHH; HHG-3 |
| Accession | O43323 |
| Amino Acid Sequence | Cys23-Gly198 |
| Expression System | E.coli |
| Molecular Weight | 20 kDa (Reducing) |
| Purity | ＞95% by SDS-PAGE |
| Endotoxin | <0.1EU/μg |
| Conjugation | Unconjugated |
| Tag | No Tag |
| Physical Appearance | Lyophilized Powder |
| Storage Buffer | PBS, pH7.4. |
| Reconstitution | Reconstitute at 0.1-1 mg/ml according to the size in ultrapure water after rapid centrifugation. |
| Stability & Storage | · 12 months from date of receipt, lyophilized powder stored at -20 to -80℃. · 3 months, -20 to -80℃ under sterile conditions after reconstitution. · 1 week, 2 to 8℃ under sterile conditions after reconstitution. · Please avoid repeated freeze-thaw cycles. |
| Reference |
1.van den Brink, G.R. (2007) Physiol. Rev. 87:1343. 2.Riobo, N.A. and D.R. Manning (2007) Biochem. J. 403:369. 3.Porter, J.A. et al. (1995) Nature 374:363. 4.Carpenter, D. et al. (1998) Proc. Natl. Acad. Sci. 95:13630. 5.Pathi, S. et al. (2001) Mech. Dev. 106:107. 6.Echelard, Y. et al. (1993) Cell 75:1417. 7.Chang, D.T. et al. (1994) Development 120:3339. 8.Pierucci-Alves, F. et al. (2001) Biol. Reprod. 65:1392. 9.Bitgood, M.J. et al. (1996) Curr. Biol. 6:298. 10.Yao, H.H.-C. et al. (2002) Genes Dev. 16:1433. 11.Park, S.Y. et al. (2007) Endocrinology 148:3704. 12.Canto, P. et al. (2004) J. Clin. Endocrinol. 89:4480. 13.Russell, M.C. et al. (2007) Biol. Reprod. 77:226. 14.Chen, X. et al. (2007) Cancer Sci. 98:68. 15.Parmantier, E. et al. (1999) Neuron 23:713. 16.Bajestan, S.N. et al. (2006) J. Neurobiol. 66:243 |
Background
Desert Hedgehog (Dhh) belongs to the highly conserved Hedgehog family of proteins which are involved in multiple developmental processes. Hedgehogs are synthesized as 45 kDa precursors that are cleaved autocatalytically. The 19 kDa N-terminal fragment remains membrane associated due to its cholesterol and palmitate modifications. Binding of this fragment to Patched receptors results in the loss of Patched repression of Smoothened signaling. Dhh binds both Patched and Patched 2 as well as Hedgehog interacting protein (Hip). Within the N-terminal peptide, mouse Dhh shares 97% and 100% amino acid (aa) sequence identity with human and rat Dhh, respectively. It shares 74% aa seqeuence identity with mouse Indian (Ihh) and Sonic hedgehog (Shh). Dhh is produced by Sertoli cells and is required for testis development and spermatogenesis. It induces steroidogenic factor 1 which is instrumental in promoting Leydig cell differentiation. It also promotes the deposition of basal lamina surrounding seminiferous tubules. In humans, mutations of Dhh are associated with pure gonadal dysgenesis. Dhh is expressed in the female by ovarian granulosa cells and the corpus luteum. Its upregulation in human ovarian cancer correlates positively with proliferative index and negatively with prognosis. Dhh is also expressed by Schwann cells and is upregulated following nerve injury. It induces the expression of Patched and Hip in nerve fibroblasts and promotes the formation of the connective tissue sheath surrounding peripheral nerves.
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