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Recombinant Human SPESP1 Protein (His Tag)
SKU: PKSH033075-50
Recombinant Human SPESP1 Protein (His Tag)
| SKU # | PKSH033075 |
| Expression Host | HEK293 Cells |
Description
| Synonyms | ESP, Equatorial Segment Protein, Glycosylated 38 kDa Sperm Protein C-7/8, SP-ESP, SPESP1, Sperm Equatorial Segment Protein 1 |
| Species | Human |
| Expression Host | HEK293 Cells |
| Sequence | Tyr20-Tyr350 |
| Accession | Q6UW49 |
| Calculated Molecular Weight | 37.9 kDa |
| Observed Molecular Weight | 58 kDa |
| Tag | C-His |
| Bio-activity | Not validated for activity |
Properties
| Purity | > 90 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 1.0 EU per μg of the protein as determined by the LAL method. |
| Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
| Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
| Formulation | Lyophilized from a 0.2 μm filtered solution of 20mM PB,150mM NaCl,pH7.4. Normally 5% - 8% trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| Reconstitution | Please refer to the printed manual for detailed information. |
Background
Sperm Equatorial Segment Protein 1 (SPESP1) is a member of the SPESP1 family. SPESP1 is highly expressed in the testis, where it is localized to the acrosome of postmeiotic stages of spermiogenesis; it is expressed at lower levels in the placenta and fetal lung. SPESP1 is involved in the multicellular organisimal development. Disruption of SPESP1 leads to abnormal distribution of sperm proteins resulting in a detached membrane from the equatorial segment and less fertile sperm. SPESP1 may interact with IZUMO1 and MN9 antigen and it contains an N-glycosylation site as well as several cAMP-dependent kinase, protein kinase C, and casein kinase II consensus phosphorylation sites.