Recombinant human VEGF 165A protein (Active) (ab9571)

The Active human VEGF full length protein (ab9571) has been tested on HUVECs and is known to stimulate proliferation of these cells, which shows that the GAG sites are present and active.
The recombinant human VEGF165 is a 38.2 kDa disulfide-linked homodimeric protein consisting of two 165 amino acid polypeptide chains. Unfortunately, we cannot be certain on where exactly the GAG sites are present. However, because ab9571 has been tested on HUVECs and does stimulate proliferation we would think that the GAG sites are present and active. Please be aware that anyhow we cannot guarantee it.
The Anti-VEGF antibody [VG-1] (ab1316) is able to detect Active human VEGF full length protein (ab9571) because ab9571 is VEGF 165 and ab1316 is able to detect VEGF 165 (please refer to the antibody datasheet for more information).

Thank you for contacting us and for your patience.

I had to contact the laboratory in order to get more information about the use of these three proteins.

I can confirm, that for the ab92965 SPARC protein (MBP) to our knowledge it has not been tested for injection in mice or other animals (besides it uses as immunogen for polyclonal antibodies production in rabbits intramuscular). It could be that it will work for injection in mice but we can not guarantee this and we have no information about different administration routes (intravenous, intramuscular etc.).

The two other proteins have been used in mice before. See the following links:

1. ab9571 VEGF protein (Active)

http://www.ncbi.nlm.nih.gov/pubmed/19088027

http://www.ncbi.nlm.nih.gov/pubmed/10784613

http://www.ncbi.nlm.nih.gov/pubmed/11689883

http://www.ncbi.nlm.nih.gov/pubmed/12036930

http://www.ncbi.nlm.nih.gov/pubmed/9401980

http://www.ncbi.nlm.nih.gov/pubmed/15358628

http://www.ncbi.nlm.nih.gov/pubmed/16477043

http://www.ncbi.nlm.nih.gov/pubmed/16888632

http://www.pnas.org/content/104/8/2837.full

http://www.ncbi.nlm.nih.gov/pubmed/18180379

http://www.ncbi.nlm.nih.gov/pubmed/15067321

http://www.ncbi.nlm.nih.gov/pubmed/20056792

http://www.ncbi.nlm.nih.gov/pubmed/22025303

http://www.pnas.org/content/early/2011/07/25/1016546108.abstract



2. ab50036 TGF beta 1 protein (Active)

http://www.ncbi.nlm.nih.gov/pubmed/20304823

http://www.ncbi.nlm.nih.gov/pubmed/22761317

I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.

Thank you for contacting us. The sequences are as follows:
ab9571: two polypeptide chains with the sequence APMAEGGGQN HHEVVKFMDV YQRSYCHPIE TLVDIFQEYP DEIEYI FKPS CVPLMRCGGCCNDEGLECVP TEESNITMQI MRI KPHQGQH IGEMSFLQHN KCECRPKKDR ARQENPCGPC SERRKHLFVQ DPQTCKCSCK NTDSRCKARQ LELNERT CRC DKPRR
ab61861: APMAEGGGQN HHEVVKFMDV YQRSYCHPIE TLVDIFQEYP DEIEYIFKPS CVPLMRCGGC CNDEGLECVP TEESNITMQI MRIKPHQGQH IGEMSFLQHN KCECRPKKDR ARQENPCGPC SERRKHLFVQ DPQTCKCSCK NTDSRCKARQ LELNERTCRC DKPRR
ab62134: double chain with the sequence MAPTTEGEQK SHEVIKFMDV YQRSYCRPIE TLVDIFQEYP DEIEYIFKPS CVPLMRCAGC CNDEALECVP TSESNITMQI MRIKPHQSQH IGEMSFLQHS RCECRPKKDR TKPEKHCEPC SERRKHLFVQ DPQTCKCSCK NTDSRCKARQ LELNERTCRC DKPRR
ab83572: APMAEGGGQN HHEVVKFMDV YQRSYCHPI ETLVDIFQEY PDEIEYIFKP SCVPLMRCG GCCNDEGLE CVPTEESNIT MQIMRIKPHQ GQHIGEMSF LQHNKCECRP KKDRARQEN PCGPCSERRK HLFVQDPQTC KCSCKNTDSR CKARQLELNE RTCRCDKPRR
ab89574: APMA EGGGQNHHEV VKFMDVYQRS YCHPIETLVD IFQEYPDEIE YIFKPSCVPL MRCGGCCNDE GLECVPTEES NITMQIMRIK PHQGQHIGEM SFLQHNKCEC RPKKDRARQE NPCGPCSERR KHLFVQDPQT CKCSCKNTDS RCKARQLELN ERTCRCDKPR R

Thank you for contacting us and your interest in our products.

We have a few different products which may be of interest to your customer. Proteins ab61861, ab56620 and ab83572 are all of the VEGF 165A form. Additionally, ab61861 and ab83572 have both been shown to have biological activity as measured by using a HUVEC assay. I think these two may therefore be of most interest to your customer.

I hope this information has been of help. If you require any further information, please do not hesitate to contact us again.

Thank you for contacting us.

For the proteins, I would suggest using ab61861 as this protein is arecombinant Human VEGF 165A protein (double, non-glycosylated, polypeptide chain containing 165 amino acids, MW 38kDa, expressed in E.coli).

In terms of the most suitable antibodies, ab9570 which is reactive with VEGF 165and 121, would be the best choice. It was raised against highly pure (>98%) recombinant hVEGF 165 (human Vascular Endothelial Cell Growth Factor), however, the epitope has not been mapped.

As for ab52917 and ab99511, I willcontact the lab to obtain more information about the immunogen region. As soon as I have more details, I will let you know.

What kind of conformation studies are you planning to do? As far as I can tell such application has not been tried with neither these protein nor antibodies.

I hope this information is already of some help to you.
In the meantime, please do not hesitate to contact us if you need any more advice or information.

Thank you for contacting us today. I can confirm that the VEGF protein ab9571 has been used in ELISA with the VEGF antibody ab9570. Therefore they are a suitable match and ab9571 can be used to generate a standard curve for ELISA. Please let me know if you need further information.

Thank you for your enquiry. Please see the response from the originator of the recombinant protein: Regarding our human VEGF, we test this by the dose-dependent stimulation of the proliferation of human umbilical vein endothelial cells (HUVEC) using a concentration range of 1.0-8.0 ng/ml. We have not tested for phosphorylation. Please find a link below with reference to using our recombinant human VEGF activating the VEGFR2: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=14764537&dopt=Abstract I hope this information helps. If you have any further questions please let me know.

Thank you very much for your enquiry and patience. Ab9571 should be reconstituted with water to a concentration of 0.1-1.0 mg/ml. Also, this product was sterile filtered and it is greater than 98% pure by SDS-PAGE and HPLC analyses. Please contact us again if you have any additional questions.