V(D)J recombination and its defects
V(D)J recombination and its defects
V(D)J recombination and its defects
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Composition of DH-JH junctional region in B–/T– SCID patients<br />
DH JH<br />
D H3-3 (germline)<br />
insertion J H4-1<br />
(germline)<br />
GTATTACGATTTTTGGAGTGGTTATTATACC ACTACTTTGACTACT<br />
GTATTACGATTTTTGGAGTGGTTATTATA<br />
GTATTACGATTTTTGGAGTGGTTATTATAC<br />
GTATTACGATTTTTGGAGTGGTTATTATACC<br />
GTATTACGATTTTTGGAGTGGTTAT<br />
GTATTACGATTTTTGGAGTGGTTATTATA<br />
GTATTACGATTTTTGGAGTGGTTATTAT<br />
GTATTACGATTTTTGGAGTGGTTATTATACC<br />
GTATTACGATTTTTGGAGTGGT<br />
GTATTACGATTTTTGGAGTGGTTATTATA<br />
GTATTACGATTTTTGGAGTGGTTATTATA<br />
GTCCA<br />
CGATCG<br />
GGT<br />
CGTAGCGTA<br />
CGTAG<br />
GGCTAAGG<br />
CGGAGC<br />
GGTTC<br />
CGATCGA<br />
CC<br />
TGACTACT<br />
CTTTGACTACT<br />
ACTACTTTGACTACT<br />
TTTGACTACT<br />
ACTTTGACTACT<br />
TGACTACT<br />
TACTTTGACTACT<br />
ACTACTTTGACTACT<br />
CTTTGACTACT<br />
ACTTTGACTACT<br />
1. Assignment of D <strong>and</strong> J gene segments usage<br />
2. Frequency of palindromic (P) nucleotides (caused by asymetric “hairpin” opening)<br />
3. Number of deleted nucleotides<br />
4. R<strong>and</strong>om insertion of nucleotides