Category: Products & Services > Proteins, Enzymes, & Peptides > Enzymes > Proteases & Peptidases
CAMP Responsive Element Binding protein 1 (CREB1), recombinant human protein is supplied as a lyophilized powder. This recombinant protein was expressed from a DNA sequence encoding the human CREB1 isoform B (P16220-2) (Met 1-Asp 327) fused to an N-terminal polyhistidine-tagged MBP tag at the N-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the protein in sterile double distilled water to a concentration of 0.2 mg/ml or lower. ...
Catalog: 10074-H10E-50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Enzymes > Proteases & Peptidases
Carboxypeptidase B2 (plasma) (CPB2), recombinant human protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the human CPB2 (NP_001863.2) extracellular domain (Met 1-Val 423) fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Diss...
Catalog: 11504-H08H-50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Enzymes > Proteases & Peptidases
Carboxypeptidase B2 (plasma) (CPB2), recombinant mouse protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the extracellular domain of mouse CPB2 (Q9JHH6) (Met 1-Thr 422) fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the ...
Catalog: 50963-M08H-50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Other Proteins & Peptides
Fatty Acid Binding Protein 3, muscle and heart (mammary-derived growth inhibitor) (FABP3), recombinant human protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the human FABP3 (P05413) (Met 1-Ala 133). Activity: This recombinant protein has not been tested. Formulation: 50 mM Tris, pH 8.2, 5% Mannitol, 5% Trehalose, 0.02% Tween80, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the protein in steril...
Catalog: 12476-HNAE-50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Other Proteins & Peptides
Fatty Acid Binding Protein 4, adipocyte (FABP4), recombinant mouse protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the mouse FABP4 (NP_077717.1) (Met 1-Ala 132) fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the protei...
Catalog: 50652-M08H-50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Other Proteins & Peptides
Fatty Acid Binding Protein 5 (psoriasis-associated) (FABP5), recombinant human protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the human FABP5 (Q01469) (Met 1-Glu 135). Activity: This recombinant protein has not been tested. Formulation: 50 mM Tris, pH 8.0, 5% Mannitol, 5% Trehalose, 0.02% Tween80, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the protein in sterile double distilled water to a ...
Catalog: 12581-HNAE-50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Other Proteins & Peptides
Immunoglobulin heavy constant gamma 4 (IGHG), recombinant rabbit protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the rabbit IgG Fc region (P01870) (Ser 101- Lys 323, 185Thr/Ala , Asn 284/Ser). Activity: This recombinant protein has not been tested. Formulation: 50 mM Tris, 100 mM Glycine, 10 mM NaCl, pH7.5, 5% Mannitol, 5% Trehalose, 0.02% Tween80, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve ...
Catalog: 11047-TNAH-250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Other Proteins & Peptides
Immunoglobulin heavy constant gamma 1 (IGHG1), recombinant human protein is supplied as a lyophilized powder. This recombinant protein was expressed from a DNA sequence encoding the Fc region of mouse IgG1 (P01868-1) (Val 98-Lys 324) with one aa mutation (102 Cys / Ser). Activity: This recombinant protein has not been tested. Formulation: 200 mM Tris, 100 mM NaAc, 10 mM NaCl, pH 7.5 , 5% Mannitol, 5% Trehalose, 0.02% Tween80, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the protein in sterile double distilled water to a concentration of 0.2 mg/ml or lower. It is recommend...
Catalog: 10690-MNAH-250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Other Proteins & Peptides
Immunoglobulin heavy constant gamma 2A (IGHG2A), recombinant mouse protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the mouse IgG2a Fc region (P01863) (Glu 99- Lys 330). Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the protein in sterile double distilled wat...
Catalog: 51094-MNAH-250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Other Proteins & Peptides
Immunoglobulin heavy constant gamma 4 (IGHG4), recombinant human protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the human IgG4 Fc region (P01861) (Glu 99- Lys 327, 108Ser/Pro). Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the protein in sterile double dist...
Catalog: 13505-HNAH-250
Size: 5 × 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Other Proteins & Peptides
Calcium and Integrin Binding family member 2 (CIB2), recombinant human protein is supplied as a frozen protein. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the mature form of human CIB2 (O75838) (Met 1-Ile 187) fused to a polyhistide tag at the N-terminus. Activity: This recombinant protein has not been tested. Formulation: 50 mM Tris, 20% glycerol, pH8.0. Reconstitution: No reconstitution needed. Store at -80°C. Avoid repeated freeze-thaw cycles. Expirat...
Catalog: 12596-H07E-50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Other Proteins & Peptides
Angiotensinogen (serpin peptidase inhibitor, clade A, member 8) (AGT), recombinant mouse protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the mouse AGT (P11859) (Met 1-Val 477) fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Diss...
Catalog: 50337-M08H-50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 2 (HA2), recombinant viral protein is supplied as a lyophilized powder. This recombinant protein was expressed from a DNA sequence encoding the C-terminal segment (Gly 347-Gln 531)of hemagglutin (Influenza A virus (A/Viet Nam/1203/2004 (H5N1)) (AAW80717.1), termed as HA2, fused to the Fc region of mouse IgG1 at the N-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the protein in sterile double distilled wat...
Catalog: 10003-V04H2-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 2 (HA2), recombinant viral protein is supplied as a lyophilized powder. This recombinant protein was expressed from a DNA sequence encoding the C-terminal fragment (Gly 362-Ala 555) of influenza B virus (B/Florida/4/2006) (ACA33493.1) hemagglutinin, termed as HA2, fused to the Fc region of human IgG1 at the N-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the protein in sterile double distilled water to a ...
Catalog: 11053-V01H2-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 2 (HA2), recombinant viral protein is supplied as a lyophilized powder. This recombinant protein was expressed from a DNA sequence encoding the C-terminal fragment (Gly 362-Ala 555) of influenza B virus (B/Florida/4/2006) (ACA33493.1) hemagglutinin, termed as HA2, fused to the Fc region of mouse IgG1 at the N-terminus. Activity: This recombinant protein has not been tested. Formulation: 50 mM Tris, 100 mM Glycine, 10 mM NaCl, pH 7.5 , 5% Mannitol, 5% Trehalose, 0.02% Tween80, 5% Mannitol, 5% Trehalose, 0.02% Tween80. Reconstitution: Dissolve the protein in sterile double ...
Catalog: 11053-V04H2-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Glu 339) of the influenza A hemagglutinin (A/Egypt/N05056/2009 (H5N1)) (ACT15357.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol...
Catalog: 11702-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 339) of the influenza A hemagglutinin (A/Hong Kong/483/97 (H5N1)) (AAC32099.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol,...
Catalog: 11689-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Glu 340) of the influenza A H5N1 hemagglutinin (A/Hong kong/213/03 (H5N1)) (ABP51975.1), termed as HA1, fused to a C-terminal polyhistidine tag, with one amino acid mutated (28 Ser / Trp). Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na...
Catalog: 11713-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 345) of theinfluenza hemagglutin (A/Hubei/2011 (H5N1)), termed as HA1, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol, 5% Trehalose, 0....
Catalog: 40015-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Glu 340) of the influenza A hemagglutinin (A/Japanese white-eye/Hong Kong/1038/2006 (H5N1)) (ABJ96775.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4...
Catalog: 11694-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 340) of the influenza hemagglutinin (A/Xinjiang/1/2006 (H5N1)) (ACJ68614.1), termed as HA1, fused to a polyhistidine tag at the C-terminus Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannit...
Catalog: 40004-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 341) of the influenza H5N1 A hemagglutinin (A/chicken/Egypt/2253-1/2006) (ABG81039.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Ma...
Catalog: 11686-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Glu 340) of the influenza A hemagglutinin (A/chicken/India/NIV33487/2006 (H5N1)) (ABQ45850.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5...
Catalog: 11712-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Glu 340) of the influenza hemagglutinin (A/duck/Hunan/795/2002 (H5N1)) (ACA47835.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Mannitol...
Catalog: 11698-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Glu 340) of the influenza A hemagglutinin H5N1 (A/duck/Laos/3295/2006 (H5N1)) (ABG67978.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% M...
Catalog: 11701-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 339) of the influenza A H5N1 hemagglutinin (A/goose/Guiyang/337/2006) (ABJ96698.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Manni...
Catalog: 11690-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Glu 324) of the influenza hemagglutinin (A/whooper swan/Mongolia/224/2005 (H5N1)) (ACZ36881.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, ...
Catalog: 11709-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 340) of the influenza A H10N3 hemagglutinin (A/duck/Hong Kong/786/1979) (BAF46762.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% Man...
Catalog: 11693-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 340) of theinfluenza hemagglutinin (A/duck/HongKong/562/1979(H10N9))(ABI84469.1), termed as HA1, fused to a polyhistidine tag at the C-terminus. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4, 5% ...
Catalog: 40028-V08H1-U50
Size: 50 µg
Category: Products & Services > Proteins, Enzymes, & Peptides > Viral & Microbial Proteins
Hemagglutinin subunit 1 (HA1), recombinant viral protein is supplied as a lyophilized powder. In general, recombinant proteins can be used as protein stucture analysis and in cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the N-terminal segment (Met 1-Arg 342) of the influenza A hemagglutinin H11N2 (A/duck/Yangzhou/906/2002 (H11N2)) (AAY85533.1), termed as HA1, fused to a C-terminal polyhistidine tag. Activity: This recombinant protein has not been tested. Formulation: 140 mM NaCl, 2.7 mM KCl, 10 mM Na 2 HPO 4 , 1.8 mM KH 2 PO 4 , pH7.4,...
Catalog: 11705-V08H1-U50
Size: 50 µg