Genome-Wide Identification and Analysis of the Chicken Basic Helix-Loop-Helix Factors

Table 2

A comparison of the number of bHLH factors among vertebrate and invertebrate species.

Family	Group	Drosophila	Lancelet	Giant owl limpet	Chicken	Zebrafish	Rat	Mouse
ASCa	A	4	3	6	2	2	2	2
ASCb	A	0	1	1	2	3	3	3
MyoD	A	1	4	1	4	4	4	4
E12/E47	A	1	1	4	5	5	4	4
Ngn	A	1	1	3	2	2	3	3
NeuroD	A	0	1	1	3	5	4	4
Atonal	A	3	1	2	3	4	2	2
Mist	A	1	1	1	1	1	1	1
Beta3	A	1	1	2	2	3	2	2
Oligo	A	0	2	3	2	4	3	3
Net	A	1	1	2	1	1	1	1
Delilah	A	1	1	0	0	0	0	0
Mesp	A	1	1	0	5	5	3	3
Twist	A	1	1	2	4	3	2	2
Paraxis	A	1	2	1	3	4	2	2
MyoRa	A	1	4	1	2	2	2	2
MyoRb	A	0	1	1	1	2	2	2
Hand	A	1	1	1	2	1	2	2
PTFa	A	1	1	1	1	1	1	1
PTFb	A	2	3	1	1	2	1	1
SCL	A	1	1	5	2	3	3	3
NSCL	A	1	1	1	2	1	2	2
SRC	B	1	1	0	3	3	3	3
Figα	B	0	1	0	0	1	1	1
Myc	B	1	1	1	3	6	4	4
Mad	B	0	1	1	3	4	4	4
Mnt	B	1	1	1	1	2	1	1
Max	B	1	1	1	1	1	1	1
USF	B	1	1	2	1	2	2	2
MITF	B	1	1	1	3	5	4	4
SREBP	B	1	1	1	2	2	2	2
AP4	B	1	1	1	0	1	1	1
MLX	B	1	1	7	3	1	2	2
TF4	B	1	0	1	1	1	1	1
Clock	C	3	1	2	3	3	2	2
ARNT	C	1	1	0	2	2	2	2
Bmal	C	1	1	0	2	2	2	2
AHR	C	2	1	1	3	4	2	2
Sim	C	1	1	1	2	2	2	2
Trh	C	1	1	0	1	2	1	1
HIF	C	1	1	1	2	6	4	4
Emc	D	1	1	2	4	5	4	4
Hey	E	1	1	1	2	4	4	4
H/E(spl)	E	11	11	12	6	15	8	8
Coe	F	1	1	1	3	5	4	4
Orphan	?	0	6	4	3	2	4	4
Total		59	78	82	104	139	114	114

The vertebrate and invertebrate species referred lancelet (Branchiostoma floridae), giant owl limpet (Lottia gigantean), Drosophila (Drosophila melanogaster, fruit fly), zebrafish (Danio rerio), chicken (Gallus gallus), rat (Rattus norvegicus), and mouse (Mus musculus). Data on lancelet and Drosophila are from Simionato et al. [9]. Data on zebrafish, rat, and mouse are from Wang et al. [10] and Zheng et al. [11]. Data on giant owl limpet and chicken are from the findings of this study. Family names and group assignment followed Ledent et al. [5, Table 1].