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	I	Q	L	V	Q	S	G	P	-	E	L	K	K	P	G	E	T	V	K	I	S	C	K	A	S	G	Y	T	F	-	-	-	-	T	N	Y	G	M	N	W	V	K	Q	A	P	G	K	G	L	K	W	M	G	W	I	N	T	N	-	-	T	G	E	P	T	Y	V	E	E	F	K	-	G	R	F	A	F	F	L	E	T	S	A	R	T	A	F	L	Q	I	N	N	L	K	N	D	D	T	S	T	Y	F	C	A	R	G	G	E	-	-	-	Y	H	F	D	Y	W	G	Q	G	T	T	L	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	QIQLVQSGPELKKPGETVKISCKAS	25	26
27-38	CDR-H1	GYTFTNYG	8	12
39-55	HFR2	MNWVKQAPGKGLKWMGW	17	17
56-65	CDR-H2	INTNTGEP	8	10
66-104	HFR3	TYVEEFKGRFAFFLETSARTAFLQINNLKNDDTSTYFC	38	39
105-117	CDR-H3	ARGGEYHFDY	10	13
118-128	HFR4	WGQGTTLTVSS	11	11