Alpha B Crystallin (CRYAB) (NM_001885) Human Mass Spec Standard

SKU PH302718

CRYAB MS Standard C13 and N15-labeled recombinant protein (NP_001876)

Product Data

• Tag: C-Myc/DDK
• Species: Human
• Expression Host: HEK293
• Expression cDNA Clone or AA Sequence: [RC202718]
• Predicted MW: 20.2 kDa
• Protein Sequence:
  Protein Sequence

  >RC202718 protein sequence; Red=Cloning site Green=Tags(s); ; MDIAIHHPWIRRPFFPFHSPSRLFDQFFGEHLLESDLFPTSTSLSPFYLRPPSFLRAPSWFDTGLSEMRL; EKDRFSVNLDVKHFSPEELKVKVLGDVIEVHGKHEERQDEHGFISREFHRKYRIPADVDPLTITSSLSSD; GVLTVNGPRKQVSGPERTIPITREEKPAVTAAPKK; ; TRTRPLEQKLISEEDLAANDILDYKDDDDKV
• Purity: > 80% as determined by SDS-PAGE and Coomassie blue staining
• Concentration: >0.05 µg/µL as determined by microplate BCA method
• Labeling Method: Labeled with [U- 13C6, 15N4]-L-Arginine and [U- 13C6, 15N2]-L-Lysine
• Buffer: 25 mM Tris-HCl, 100 mM glycine, pH 7.3
• Storage: Store at -80°C. Avoid repeated freeze-thaw cycles.
• Stability: Stable for 3 months from receipt of products under proper storage and handling conditions.
• Shipping: Dry Ice

Reference Data

• RefSeq: NP_001876
• RefSeq Size: 998
• RefSeq ORF: 525
• Synonyms: CMD1II; CRYA2; CTPP2; CTRCT16; HEL-S-101; HSPB5; MFM2
• Locus ID: 1410
• UniProt ID: P02511
• Cytogenetics: 11q23.1
• Summary: Mammalian lens crystallins are divided into alpha, beta, and gamma families. Alpha crystallins are composed of two gene products: alpha-A and alpha-B, for acidic and basic, respectively. Alpha crystallins can be induced by heat shock and are members of the small heat shock protein (HSP20) family. They act as molecular chaperones although they do not renature proteins and release them in the fashion of a true chaperone; instead they hold them in large soluble aggregates. These heterogeneous aggregates consist of 30-40 subunits; the alpha-A and alpha-B subunits have a 3:1 ratio, respectively. Two additional functions of alpha crystallins are an autokinase activity and participation in the intracellular architecture. The encoded protein has been identified as a moonlighting protein based on its ability to perform mechanistically distinct functions. Alpha-A and alpha-B gene products are differentially expressed; alpha-A is preferentially restricted to the lens and alpha-B is expressed widely in many tissues and organs. Elevated expression of alpha-B crystallin occurs in many neurological diseases; a missense mutation cosegregated in a family with a desmin-related myopathy. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2019]