DATASHEET
Host:
Rabbit
Target Protein:
KAP1 (phospho S824)
Modification Site:
Ser824
Clonality:
Monoclonal
Isotype:
IgG
Entrez Gene:
10155
Swiss Prot:
Q13263
Source:
Synthetic phospho Peptide corresponding to a region surrounding Serine 824 of Human KAP1
Purification:
Purified by Protein A.
Storage Buffer:
0.01M TBS(pH7.4) with 1% BSA, 0.02% Proclin300 and 50% Glycerol.
Storage:
Store at -20°C for 12 months.
Background:
The KRAB (Kruppel Associated Box) domain is minimally about 45 amino acids in length and is a transcriptional repression domain found in numerous transcription factors. Over 220 KRAB zinc finger protein (KRAB ZFP) genes have been identified in the human genome. These proteins functionally repress transcription via specific interactions with KAP1 (KRAB Associated Protein 1). KAP1 is an 835 amino acid polypeptide that contains a RING finger, B boxes, and a PHD finger. KAP1 has been shown to form complexes with KRAB domain transcription factors and increase the efficiency with which they mediate repression. KAP1 has also been shown to directly interact with HP1 (heterochromatin protein 1) and KRAZ1 (Kruppel associated box containing zinc finger protein 1). KAP1 directly targets KRAZ1 to the foci of centromeric heterochromatin containing HP1alpha, helping to regulate transcriptional repression. Recent studies have shown that KAP1 mutants with the ability to bind KRAB but unable to bind HP1 leads to random distribution of KRAZ1 and strong transcriptional activation.