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Myoglobin from equine heart

≥90% (SDS-PAGE), essentially salt-free, lyophilized powder

Myoglobin from horse heart
CAS Number:
EC Number:
MDL number:

Quality Level

biological source

equine heart


≥90% (SDS-PAGE)


essentially salt-free, lyophilized powder

Iron content



MALDI-MS: suitable

UniProt accession no.

storage temp.


Gene Information

horse ... MB(100054434)

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Myoglobin from equine heart is suitable for use in:
  • spectral measurements in Beckman DU-50 or Gilford 2400 spectrophotometer
  • the secondary structure analysis of proteins in H2O solution using single-pass attenuated total reflection Fourier transform infrared (ATR-FT-IR) microscopy
  • the calibration of the mass scale at a concentration of 2 pmol/μL in Electrospray mass spectrometry
  • a study to investigate on-line single droplet deposition for MALDI mass spectrometry
  • a study to examine protein adsorption in fused-silica and polyacrylamide-coated capillaries


250 mg in glass bottle
1, 5, 10 g in glass bottle

Biochem/physiol Actions

Myoglobin is a mobile carrier of oxygen that is developed in red muscle and heart cells. This happens as a response to elevated demand for oxygen during exercise, and transports oxygen from the sarcolemma to the mitochondria of vertebrate heart and red muscle cells.

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. What is the molecular weight of Product M1882, Myoglobin from equine heart?

    Based on the amino acid sequence (16,950) plus the heme group (616), the molecular weight is approximately 17,600 g/mol.

  4. Is Product M1882, Myoglobin from equine heart, oxidized?

    Yes, it is oxidized.

  5. Is Product M1882, Myoglobin from equine heart, metmyoglobin?

    The M1882 is a mixture, but we have not analyzed the percentages of the oxidized myoglobin or the reduced myoglobin in the product.

  6. Which has more affinity for oxygen, hemoglobin or myoglobin?

    The affinity of myoglobin for oxygen is higher than that of hemoglobin.

  7. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  8. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  9. Do you have the sequence for Product M1882, Myoglobin from equine heart?

    Product M1882 - Myoglobin from equine heart is purified from equine heart.  It is not sequenced.Accession P68082 for equine myoglobin has the following sequenceMGLSDGEWQQVLNVWGKVEADIAGHGQEVLIRLFTGHPETLEKFDKFKHLKTEAEMKASE DLKKHGTVVLTALGGILKKKGHHEAELKPLAQSHATKHKIPIKYLEFISDAIIHVLHSKHPGDFGADAQGAMTKALELFRNDIAAKYKELGFQGI hope that you find this information helpful.If you have further questions, please reply to this email.Sincerely,Audrey FlemingSigma-Aldrich Technical Service

  10. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

D H Robertson et al.
Rapid communications in mass spectrometry : RCM, 11(7), 786-790 (1997-01-01)
Major urinary proteins (MUPs) from the urine of individual wild mice were characterized using electrospray ionization mass spectrometry (ESI-MS) and compared to MUPs from the urine of inbred mice. The wild mice showed considerable variation between individuals in the expression...
Guadalupe Gómez-Baena et al.
Scientific reports, 9(1), 10757-10757 (2019-07-26)
Major urinary proteins (MUP) are the major component of the urinary protein fraction in house mice (Mus spp.) and rats (Rattus spp.). The structure, polymorphism and functions of these lipocalins have been well described in the western European house mouse...
Laurent Marichal et al.
Langmuir : the ACS journal of surfaces and colloids, 36(28), 8218-8230 (2020-06-26)
Protein adsorption on nanoparticles is an important field of study, particularly with regard to nanomedicine and nanotoxicology. Many factors can influence the composition and structure of the layer(s) of adsorbed proteins, the so-called protein corona. However, the role of protein...
N Watson et al.
The Journal of pharmacy and pharmacology, 58(7), 959-966 (2006-06-30)
Monovalent RGD (arginine-glycine-aspartic acid) peptides or polymers furnished with RGD in random distributions are employed as cell-scaffolds and gene delivery vehicles. However, integrin binding to RGD is dependent on the spatial distribution (clustering) of the ligand and intrinsic integrin affinity...
Ursula Waack et al.
mBio, 9(6) (2018-12-20)
Antibiotic-resistant Acinetobacter baumannii is increasingly recognized as a cause of difficult-to-treat nosocomial infections, including pneumonia, wound infections, and bacteremia. Previous studies have demonstrated that the metalloprotease CpaA contributes to virulence and prolongs clotting time when added to human plasma as...


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