Technical Data
Period Clock Protein 1 (Per1, RIGUI)
Several endogenous factors have been linked to rhythmicity or circadian behavior of living organisms. In Drosophila, the genes period (dPer) and timeless (tim), and in Neurospora frequency (frq), have been proposed to be responsible for their circadian rhythm. Recently human and mouse genes encoding a basichelix-loop-helix (bHLH) and Per-ARNT-Sim (PAS)-domain with significant similarity to the Drosophila Period have been reported. The cDNA sequences of hPER and mPer1 (also named RIGUI) are predicted to encode for proteins of length 1290 and 1291 amino acids respectively. Homologues of mPer1 designated Per 2 (1257aa) and Per3 (1113aa) have also been cloned. Both Per1 and Per2 levels show circadian rhythm in the SCN and eyes. It has been suggested that mPer regulates neuronal activity in the SCN. Using genetic approach, a single mutation (A to T in the Clock gene affects circadian rhythmicity in mice. Clock has been mapped to chromosome 5. Mouse Clock encodes a transcription factor, a single polypeptide chain of 855aa (predicted calculated mol wt ~97kD; pI 6.52; hClock, 846aa). Clock is abundantly expressed in brain (SCN, pyrifom cortex, hippocampus) as well as in other tissues (eye, total brain, tested, ovaries, liver, heart, lung, and kidney). Although, Clock is constitutively expressed (not rhythmic) in the SCN, it may still be an important component of circadian machinery.

Suitable for use in ELISA, Western Blot. Other applications not tested.

Recommended Dilution:
Western Blot: 1:1000-1:5000.

ELISA: 1:10,000-1:100,000 using 50-100ng of control peptide/well.

Optimal dilutions to be determined by the researcher.

Control Peptide: P3342-12A

Storage and Stability:
May be stored at 4C for short-term only. For long-term storage, store at -20C. Aliquots are stable for at least 12 months at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
50ul4C (-20C Glycerol)Blue IceMouseRabbit
Not determined
A 16-aa peptide internal sequence mapping downstream of the SG repeat of mouse Per 1 (KLH conjugated).
Supplied as a liquid, neat serum, 0.05% sodium azide, 40% glycerol.
Recognizes Period Clock Protein 1. No significant homology is seen with Per2, Per 3, dPER or other known proteins. Species homology: human Per1 (93%).
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.
1.Sun SZ et al (1997) Cell 90, 1003-1011. 2.Tei H et al (1997) Nature 389, 512-516.