X-Filtered NOESY NMR Standard (NEX-XF1)
NEX-XF1
In an X-filtered experiment, only NOEs between 15N/13C-1H and 14N/12C-1H (e.g. interchain NOEs) protons are observed. NOEs between protons connected to 15N,13C are filtered (intrachain NOEs). When uniformly double-labelled protein sample is mixed with a natural abundance protein sample, the interface will give rise to the only observable NOESY cross peaks. This powerful strategy enables the spectroscopist to discern intra from inter NOESY cross peaks, thereby providing essential distance constraints for defining the dimer interface (Lee, et al., 1994, 350:87; Palmer, et al., 1991, 93:151; Schleucher, et al., 1994, 4:301).
NEX-XF1 is a 16 kDa protein (A. fulgidus antitoxin vapB21 homodimer) for which a set of resonance assignments (bmr7362), 3D structure (2NWT), and other NMR data are available in the public domain. This is a mixture of unlabelled and uniformly 15N,13C-enriched protein (25% homodimer unlabelled; 50% heterodimer unlabelled/labelled; 25% homodimer labelled) and is perfect to set up X-filtered NOESY experiments.

NEX-XF1 homodimer sample formulation
X-Filtered NOESY NMR Standard
NEX-XF1-U (Unlabelled)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
(Unlabelled)
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NEX-XF1-N (15N, 95%)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
(15N, 95%)
Shipping and Delivery
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Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
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If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-CN-5 (13C, 5%; 15N, 95%)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
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Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-CN (13C, 95%; 15N, 95%)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-CDN (13C, 95%; D, 95%; 15N, 95%)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-ILV (13C, 95%; D, 95%; 15N, 95%; 13CH3-ILV)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-ILVFY (13C, 95%; D, 95%; 15N, 95%; 13CH3-ILVFY)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
X-Filtered NOESY NMR Standard, His-Tagged
NEX-XF1-HIS-U (Unlabelled)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
(Unlabelled)
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-HIS-N (15N, 95%)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
(15N, 95%)
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-CN-5 (13C, 5%; 15N, 95%)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-HIS-CN (13C, 95%; 15N, 95%)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
(13C, 95%; 15N, 95%)
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-HIS-CDN (13C, 95%; D, 95%; 15N, 95%)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
(13C, 95%; D, 95%; 15N, 95%)
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-HIS-ILV (13C, 95%; D, 95%; 15N, 95%; 13CH3-ILV)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
(13C, 95%; D, 95%; 15N, 95%; 13CH3-ILV)
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
NEX-XF1-HIS-ILVFY (13C, 95%; D, 95%; 15N, 95%; 13CH3-ILVFY)
(13C, 95%; 15N, 95%)
| UOM | UL |
| Labeled CAS Number | NA |
| Unlabeled CAS Number | NA |
| Chemical Purity | NA |
| UN Number | NH |
| MW | NA |
Description
(13C, 95%; D, 95%; 15N, 95%; 13CH3-ILVFY)
Shipping and Delivery
UK mainland delivery (up to 15kg) - £19
UK mainland delivery (over 15kg) - Please request quote
Northern Ireland and International delivery - Please request quote
Hazardous goods delivery - Please request quote
Shipping timeframes are estimated and subject to change. Stock orders will be despatched within 1 to 2 working days. Any significant deviation from stated lead times will be communicated using the order contact information provided. A tracking number and proof of delivery is available for all orders.
Returns and Exchange
If wishing to return a product, please notify us within 7 days of receipt of the order. Full returns policy available here.
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