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IG and TR orphons (overview): Human

The orphons belong to 17 IG chromosomal orphon sets and to one TR chromosomal orphon set.

There are 97 identified orphons:

There are only two processed genes (IGHEP2) on chromosome 9 and IGL-C/OR18 on chromosome 18, among the 97 identified orphons.

Orphon IMGT/LIGM-DB accession numbers are reported in Gene tables.

Chromosome Cytogenetic band Group Number of genes
1 1pter-1qter IGKV 1
2 2p11.1
2p11.2
2p12
2q11.2
2q12-2q14		 IGKV
IGKV
IGKV
IGKV
IGKV		 3
1
1
12
1
8 8q11.2 IGLV 2
9 9p12
9p24.2-p24.1
9q21.11
9p21		IGKV
IGHC
IGKV
TRBV		1
1(1)
1
9
10 10q11.21 IGKV 1
15 15 pter-15qter
15q11.2		 IGKV
IGHD
IGHV		 1
10
9
16 16p11.2 IGHV 28
18 18p11.31 IGLC 1(2)
21 21p11.2 IGHV 1
22 22q12.2-22q12.3
22q11.2-22q12.1
22q12.2-22q12.3
22q11		 IGLC
IGLV
IGLV
IGKV		 2
1
1
5
Y Yq11.21 IGKV 1
N.L. IGKV 3
Total 97 orphons
(including 2 processed genes)

N.L. = not localized

IMGT notes:
(1) Corresponds to the processed gene IGHEP2.
(2) Corresponds to the processed gene IGLJ-C/OR18.
Reference:
[1] Lefranc, M.-P. and Lefranc, G., The Immunoglobulin FactsBook, Academic Press, 458 pages (2001) ISBN:012441351X.
[2] Lefranc, M.-P. and Lefranc, G., The T cell receptor FactsBook, Academic Press, 398 pages (2001) ISBN:0124413528.
See also:
Created:
02/04/2001
Last updated:
Friday, 22-Sep-2023 18:21:24 CEST
Authors:
Morgane Bertignac, Géraldine Folch, Joumana Jabado-Michaloud, Véronique Giudicelli, Gérard Lefranc and Marie-Paule Lefranc
Editors:
Elodie Foulquier, Chantal Ginestoux