IMGT amino acid positions:

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37	38	39	40	41	42	43	44	45	46	47	48	49	50	51	52	53	54	55	56	57	58	59	60	61	62	63	64	65	66	67	68	69	70	71	72	73	74	75	76	77	78	79	80	81	82	83	84	85	86	87	88	89	90	91	92	93	94	95	96	97	98	99	100	101	102	103	104	105	106	107	108	109	110	111	112	113	114	115	116	117	118	119	120	121	122	123	124	125	126	127	128
Q	G	Q	M	Q	Q	S	G	A	-	E	L	V	K	P	G	A	S	V	K	L	S	C	K	T	S	G	F	T	F	-	-	-	-	T	N	S	Y	I	S	W	L	K	Q	K	P	G	Q	S	L	E	W	I	A	W	I	Y	A	G	-	-	T	G	G	N	Y	Y	N	Q	K	F	T	-	G	K	A	Q	L	T	V	D	T	S	S	S	T	A	Y	I	Q	F	S	S	L	T	T	E	D	S	A	I	Y	Y	C	A	R	H	K	L	-	-	-	R	Y	F	D	V	W	G	A	G	T	T	V	T	V	S	S
HFR1																										CDR-H1												HFR2																	CDR-H2										HFR3																																							CDR-H3													HFR4

Residues	Region	Sequence Fragment	Length	Max Index Range
1-26	HFR1	QGQMQQSGAELVKPGASVKLSCKTS	25	26
27-38	CDR-H1	GFTFTNSY	8	12
39-55	HFR2	ISWLKQKPGQSLEWIAW	17	17
56-65	CDR-H2	IYAGTGGN	8	10
66-104	HFR3	YYNQKFTGKAQLTVDTSSSTAYIQFSSLTTEDSAIYYC	38	39
105-117	CDR-H3	ARHKLRYFDV	10	13
118-128	HFR4	WGAGTTVTVSS	11	11