Technical Data
Myelin Basic Protein (MBP)
Myelin Basic Protein (MBP) is one of the major proteins of the myelin sheath surrounding axons in the nervous system. Since it is of relatively low molecular weight and high abundance the protein sequence was determined from purified protein over 30 years ago (1). The protein is made by oligodendrocytes in the central nervous system, so antibodies to MBP are good markers of this cell type. However, transcripts from the same gene are also expressed in certain hematopoetic lineage cells (2). In the mammalian central nervous system there are four different forms of the protein made by alternate transcription from a single gene, which have molecular weights of 21.5, 20.5, 18.5, and 17.2kD in humans. The single gene of rodents also produces 4 different proteins, but of slightly different sizes, 21.5, 18.5, 17 and 14kD. Sequence alignments of both sets of isotypes can be downloaded from here. We characterized our antibodies on rat spinal cord homogenates and detected the four bands expected for that species. As shown below, 031393 shows preferential binding for the two higher molecular weight isoforms of 21.5kD and 18.5kD in the rat. The HGNC name for this protein is MBP.

Suitable for use in Immunofluorescence and Western Blot. A suitable control tissue is rat spinal cord or peripheral nerve homogenate. The major isoforms of MBP run as a closely spaced set of bands between of 21.5kD and 14kD for rodent and 21.5kD to 17kD for human. Other applications not tested.

Recommended Dilution:
Immunofluorescence: 1:1000
Western Blot: 1:10,000
Optimal dilutions to be determined by the researcher.

Storage and Stability:
May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
100ul-20CBlue IceMouse
Not determined
Supplied as a liquid.
Recognizes rat MBP.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.
1. Eylar EH, Brostoff S, Hashim G, Caccam J, Burnett P. Basic A1 protein of the myelin membrane. The complete amino acid sequence. J. Biol. Chem. 246:5770-5784 (1971).

2. Marty MC, Alliot F, Rutin J, Fritz R, Trisler D. and Pessac B. The myelin basic protein gene is expressed in differentiated blood cell lineages and in hemopoietic progenitors. Proc. Nat. Acad. Sci. 99:8856-8861 (2002).