Recombinant Human Ropporin-1A (ROPN1) Protein (His)

Name: Recombinant Human Ropporin-1A (ROPN1) Protein (His)
Brand: Beta LifeScience
SKU: BLC-00380P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Collections: All products, High-quality recombinant proteins, Other recombinant proteins

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Product Overview

Description	Recombinant Human Ropporin-1A (ROPN1) Protein (His) is produced by our E.coli expression system. This is a full length protein.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	Q9HAT0
Target Symbol	ROPN1
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	C-6His
Target Protein Sequence	MAQTDKPTCIPPELPKMLKEFAKAAIRVQPQDLIQWAADYFEALSRGETPPVRERSERVALCNRAELTPELLKILHSQVAGRLIIRAEELAQMWKVVNLPTDLFNSVMNVGRFTEEIEWLKFLALACSALGVTITKTLKIVCEVLSCDHNGGSPRIPFSTFQFLYTYIAKVDGEISASHVSRMLNYMEQEVIGPDGIITVNDFTQNPRVQLE
Expression Range	1-212aa
Protein Length	Full Length
Mol. Weight	30.8 kDa
Research Area	Cell Biology
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Important for male fertility. With ROPN1L, involved in fibrous sheath integrity and sperm motility, plays a role in PKA-dependent signaling processes required for spermatozoa capacitation.
Subcellular Location	Cell projection, cilium, flagellum.
Protein Families	Ropporin family
Database References	HGNC: 17692 KEGG: hsa:54763 STRING: 9606.ENSP00000184183 UniGene: PMID: 29247344 Ropporin gene expression is related to the sperm motility. Its abnormal expression in the sperm of asthenozoospermic men with varicocele is associated with impaired sperm motility that is improved after varicocelectomy. PMID: 25704993 Lack of ROPN1 had no effect on ciliary motility. PMID: 22021175 We suggest that ropporin is a promising target for MM immunotherapy, as we were able to generate human leukocyte antigen class I-restricted cytotoxic lymphocytes able to kill autologous MM cells. PMID: 21654522 CABYR variants form a complex not only with the scaffolding protein AKAP3 but also with another RII-like domain-containing protein in the sperm fibrous sheath. PMID: 21240291 ropporin was predominantly expressed in round spermatids in human testis, and located in the principal piece and end piece of spermatozoa flagella. Expression level of ropporin was significantly lower in asthenozoospermic men than in normozoospermic men. PMID: 20705794 One SNP (rs4499545) in the ROPN1-KALRN intergenic region showed significant allelic and genotypic association with ischemic stroke risk. PMID: 20107840 Ropporin gene expression in tumor cells is associated with the presence of high titer IgG antibodies against Ropporin, suggesting the in vivo translation of the mRNA into protein and the immunogenicity of the protein to the autologous hosts. PMID: 17551920

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.