Choose Your Country or Region

research use only

C1q Antibody [G8H3]

Catalog No.: F1660

Application: Reactivity: Mouse

Immunohistochemical analysis of formalin fixed paraffin embedded mouse brain tissue with F1660 at 1:1000 dilution.,
Immunohistochemical analysis of formalin fixed paraffin embedded mouse brain tissue with F1660 at 1:1000 dilution.,

Usage Information

Dilution
IHC1:1000

Application
IHC

Reactivity
Mouse

Source
Rabbit Monoclonal Antibody

Storage Buffer
PBS, pH 7.2+50% Glycerol+0.05% BSA+0.01% NaN3

Storage (from the date of receipt)
-20°C (avoid freeze-thaw cycles), 2 years

Positive Control	Mouse cerebral cortex
Negative Control

Exprimental Methods

IHC
Experimental Protocol： Deparaffinization/Rehydration 1. Deparaffinize/hydrate sections: 2. Incubate sections in three washes of xylene for 5 min each. 3. Incubate sections in two washes of 100% ethanol for 10 min each. 4. Incubate sections in two washes of 95% ethanol for 10 min each. 5. Wash sections two times in dH2O for 5 min each. 6.Antigen retrieval: For Citrate: Heat slides in a microwave submersed in 1X citrate unmasking solution until boiling is initiated; continue with 10 min at a sub-boiling temperature (95°-98°C). Cool slides on bench top for 30 min. Staining 1. Wash sections in dH2O three times for 5 min each. 2. Incubate sections in 3% hydrogen peroxide for 10 min. 3. Wash sections in dH2O two times for 5 min each. 4. Wash sections in wash buffer for 5 min. 5. Block each section with 100–400 µl of blocking solution for 1 hr at room temperature. 6. Remove blocking solution and add 100–400 µl primary antibody diluent in to each section. Incubate overnight at 4°C. 7. Remove antibody solution and wash sections with wash buffer three times for 5 min each. 8. Cover section with 1–3 drops HRPas needed. Incubate in a humidified chamber for 30 min at room temperature. 9. Wash sections three times with wash buffer for 5 min each. 10. Add DAB Chromogen Concentrate to DAB Diluent and mix well before use. 11. Apply 100–400 µl DAB to each section and monitor closely. 1–10 min generally provides an acceptable staining intensity. 12. Immerse slides in dH2O. 13. If desired, counterstain sections with hematoxylin. 14. Wash sections in dH2O two times for 5 min each. 15. Dehydrate sections: Incubate sections in 95% ethanol two times for 10 sec each; Repeat in 100% ethanol, incubating sections two times for 10 sec each; Repeat in xylene, incubating sections two times for 10 sec each. 16. Mount sections with coverslips and mounting medium.

IHC

Experimental Protocol：

Deparaffinization/Rehydration

1. Deparaffinize/hydrate sections:

2. Incubate sections in three washes of xylene for 5 min each.

3. Incubate sections in two washes of 100% ethanol for 10 min each.

4. Incubate sections in two washes of 95% ethanol for 10 min each.

5. Wash sections two times in dH2O for 5 min each.

6.Antigen retrieval: For Citrate: Heat slides in a microwave submersed in 1X citrate unmasking solution until boiling is initiated; continue with 10 min at a sub-boiling temperature (95°-98°C). Cool slides on bench top for 30 min.

Staining

1. Wash sections in dH2O three times for 5 min each.

2. Incubate sections in 3% hydrogen peroxide for 10 min.

3. Wash sections in dH2O two times for 5 min each.

4. Wash sections in wash buffer for 5 min.

5. Block each section with 100–400 µl of blocking solution for 1 hr at room temperature.

6. Remove blocking solution and add 100–400 µl primary antibody diluent in to each section. Incubate overnight at 4°C.

7. Remove antibody solution and wash sections with wash buffer three times for 5 min each.

8. Cover section with 1–3 drops HRPas needed. Incubate in a humidified chamber for 30 min at room temperature.

9. Wash sections three times with wash buffer for 5 min each.

10. Add DAB Chromogen Concentrate to DAB Diluent and mix well before use.

11. Apply 100–400 µl DAB to each section and monitor closely. 1–10 min generally provides an acceptable staining intensity.

12. Immerse slides in dH2O.

13. If desired, counterstain sections with hematoxylin.

14. Wash sections in dH2O two times for 5 min each.

15. Dehydrate sections: Incubate sections in 95% ethanol two times for 10 sec each; Repeat in 100% ethanol, incubating sections two times for 10 sec each; Repeat in xylene, incubating sections two times for 10 sec each.

16. Mount sections with coverslips and mounting medium.

Datasheet & SDS

Biological Description

Specificity
C1q Antibody [G8H3] detects endogenous levels of total C1q protein.

Subcellular Location
Secreted

Uniprot ID
P02745

Clone
G8H3

Synonym(s)
Complement C1q subcomponent subunit A, C1qa

Background
C1q is a hexameric glycoprotein and the recognition molecule of the classical complement pathway, composed of 18 polypeptide chains forming six heterotrimers (C1qA, C1qB, C1qC), each with a collagen-like N-terminal domain and a globular C-terminal head (gC1q). Mainly produced by cells of the monocyte/macrophage lineage, it is also expressed by dendritic cells, endothelial cells, fibroblasts, and trophoblasts. Structurally resembling a “bouquet of tulips,” C1q plays a central role in innate and adaptive immunity by recognizing immune complexes, apoptotic cells, pathogens, and altered self-antigens via its gC1q domain, while its collagen domain interacts with receptors and serine proteases (C1r/C1s) to initiate the classical complement cascade. Beyond its complement-activating function, C1q performs diverse non-canonical roles including clearance of apoptotic cells, regulation of inflammation, neurodevelopment via synaptic pruning, pro-angiogenic activity in pregnancy and wound healing, tumor surveillance, and potential involvement in aging and neurodegeneration.

Background

C1q is a hexameric glycoprotein and the recognition molecule of the classical complement pathway, composed of 18 polypeptide chains forming six heterotrimers (C1qA, C1qB, C1qC), each with a collagen-like N-terminal domain and a globular C-terminal head (gC1q). Mainly produced by cells of the monocyte/macrophage lineage, it is also expressed by dendritic cells, endothelial cells, fibroblasts, and trophoblasts. Structurally resembling a “bouquet of tulips,” C1q plays a central role in innate and adaptive immunity by recognizing immune complexes, apoptotic cells, pathogens, and altered self-antigens via its gC1q domain, while its collagen domain interacts with receptors and serine proteases (C1r/C1s) to initiate the classical complement cascade. Beyond its complement-activating function, C1q performs diverse non-canonical roles including clearance of apoptotic cells, regulation of inflammation, neurodevelopment via synaptic pruning, pro-angiogenic activity in pregnancy and wound healing, tumor surveillance, and potential involvement in aging and neurodegeneration.

References
https://pubmed.ncbi.nlm.nih.gov/26175731/ https://pubmed.ncbi.nlm.nih.gov/29692784/

Reference Table for Selecting PVDF Membrane Pore Size Specifications

Protein Size (kDa)	PVDF Transfer Membrane Pore Size (μm)
< 10	0.22
10-20	0.22
20-30	0.45
30-45	0.45
45-70	0.45
80-100	0.45
100-140	0.45
> 140	0.45

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

Tel: +1-832-582-8158 Ext:3
If you have any other enquiries, please leave a message.

* Indicates a Required Field

Protein Size (kDa)	Separating Gel Percentage
4-40	20%
12-45	15%
10-70	12.5%
15-100	10%
25-100	8%
60-210	5%