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Isolation and Properties of a Low Molecular Weight β2-Globulin Occurring in Human Biological Fluids
Open accessAbstract
A low molecular weight β2-globulin (β2-microglobulin) has been purified from urine of patients with tubular proteinurias. The isolation procedure includes ultrafiltration, zone electrophoresis, gel chromatography, and ion exchange chromatography. The yield of purified protein was 11 to 13% of a total amount of 2.8 to 89 mg of β2-microglobulin per 24-hour urine volume. The β2-microglobulin occurs in small quantities in normal human urine, plasma, and cerebrospinal fluid. The purified protein appeared homogeneous in Ouchterlony immunodiffusion, immunoelectrophoresis, starch gel electrophoresis, and ultracentrifugation. The molecular weight found from equilibrium ultracentrifugation was 11,600. Amino acid analyses indicated the presence of 100 residues, giving a calculated molecular weight of 11,815. The protein appears to consist of a single polypeptide chain with 2 half-cystine residues involved in a disulfide bond. Isoleucine was identified as the NH2-terminal residue. The β2-microglobulin is devoid of carbohydrate.
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Cited by
Normal and abnormal aspects of proteinuria
Lillehoj, E. P., & Poulik, M. D. (1986) · Experimental pathology · doi:10.1016/s0232-1513(86)80002-0 · Cited by 527
Rediscovering Beta-2 Microglobulin As a Biomarker across the Spectrum of Kidney Diseases
Argyropoulos, C. P., Chen, S. S., Ng, Y.-H., Roumelioti, M.-E., Shaffi, K., Singh, P. P., & Tzamaloukas, A. H. (2017) · Frontiers in Medicine · doi:10.3389/fmed.2017.00073 · Cited by 308
Isolation and properties of a human retinol-transporting protein
Peterson, P. A., & Berggård, I. (1971) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(18)62527-x · Cited by 207
Self-citationShi, F., Sun, L., & Kaptoge, S. (2021) · Atherosclerosis · doi:10.1016/j.atherosclerosis.2021.01.018 · Cited by 70
Complement activation by the amyloid proteins Aβ peptide and β2-microglobulin
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Metadata
- Authors
- Berggård, I., & Bearn, A. G.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 1968-08
- Volume
- 243
- Issue
- 15
- Pages
- 4095-4103
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W1498470436
- Cited by
- 739
- References
- 0
- FWCI
- 12.21
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Berggård, I., & Bearn, A. G. (1968). Isolation and Properties of a Low Molecular Weight β2-Globulin Occurring in Human Biological Fluids. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(18)93284-9
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