UniProt ID | OFD1_HUMAN | |
---|---|---|
UniProt AC | O75665 | |
Protein Name | Oral-facial-digital syndrome 1 protein | |
Gene Name | OFD1 | |
Organism | Homo sapiens (Human). | |
Sequence Length | 1012 | |
Subcellular Localization | Cytoplasm, cytoskeleton, microtubule organizing center, centrosome, centriole . Cytoplasm, cytoskeleton, cilium basal body . Nucleus . Cytoplasm, cytoskeleton, microtubule organizing center, centrosome, centriolar satellite . Localizes to centriole d | |
Protein Description | Component of the centrioles controlling mother and daughter centrioles length. Recruits to the centriole IFT88 and centriole distal appendage-specific proteins including CEP164. Involved in the biogenesis of the cilium, a centriole-associated function. The cilium is a cell surface projection found in many vertebrate cells required to transduce signals important for development and tissue homeostasis. Plays an important role in development by regulating Wnt signaling and the specification of the left-right axis. Only OFD1 localized at the centriolar satellites is removed by autophagy, which is an important step in the ciliogenesis regulation (By similarity).. | |
Protein Sequence | MMAQSNMFTVADVLSQDELRKKLYQTFKDRGILDTLKTQLRNQLIHELMHPVLSGELQPRSISVEGSSLLIGASNSLVADHLQRCGYEYSLSVFFPESGLAKEKVFTMQDLLQLIKINPTSSLYKSLVSGSDKENQKGFLMHFLKELAEYHQAKESCNMETQTSSTFNRDSLAEKLQLIDDQFADAYPQRIKFESLEIKLNEYKREIEEQLRAEMCQKLKFFKDTEIAKIKMEAKKKYEKELTMFQNDFEKACQAKSEALVLREKSTLERIHKHQEIETKEIYAQRQLLLKDMDLLRGREAELKQRVEAFELNQKLQEEKHKSITEALRRQEQNIKSFEETYDRKLKNELLKYQLELKDDYIIRTNRLIEDERKNKEKAVHLQEELIAINSKKEELNQSVNRVKELELELESVKAQSLAITKQNHMLNEKVKEMSDYSLLKEEKLELLAQNKLLKQQLEESRNENLRLLNRLAQPAPELAVFQKELRKAEKAIVVEHEEFESCRQALHKQLQDEIEHSAQLKAQILGYKASVKSLTTQVADLKLQLKQTQTALENEVYCNPKQSVIDRSVNGLINGNVVPCNGEISGDFLNNPFKQENVLARMVASRITNYPTAWVEGSSPDSDLEFVANTKARVKELQQEAERLEKAFRSYHRRVIKNSAKSPLAAKSPPSLHLLEAFKNITSSSPERHIFGEDRVVSEQPQVGTLEERNDVVEALTGSAASRLRGGTSSRRLSSTPLPKAKRSLESEMYLEGLGRSHIASPSPCPDRMPLPSPTESRHSLSIPPVSSPPEQKVGLYRRQTELQDKSEFSDVDKLAFKDNEEFESSFESAGNMPRQLEMGGLSPAGDMSHVDAAAAAVPLSYQHPSVDQKQIEEQKEEEKIREQQVKERRQREERRQSNLQEVLERERRELEKLYQERKMIEESLKIKIKKELEMENELEMSNQEIKDKSAHSENPLEKYMKIIQQEQDQESADKSSKKMVQEGSLVDTLQSSDKVESLTGFSHEELDDSW | |
Overview of Protein Modification Sites with Functional and Structural Information | ||
* ASA = Accessible Surface Area
Locations | Modification | Substrate Peptides & Secondary Structure |
ASA (%) | Reference | Orthologous Protein Cluster |
---|---|---|---|---|---|
5 | Phosphorylation | ---MMAQSNMFTVAD ---CCCCCCCCCHHH | 22.26 | 24043423 | |
9 | Phosphorylation | MAQSNMFTVADVLSQ CCCCCCCCHHHHCCH | 12.19 | 24043423 | |
15 | Phosphorylation | FTVADVLSQDELRKK CCHHHHCCHHHHHHH | 35.12 | 24043423 | |
21 | Ubiquitination | LSQDELRKKLYQTFK CCHHHHHHHHHHHHH | 60.81 | - | |
22 | Ubiquitination | SQDELRKKLYQTFKD CHHHHHHHHHHHHHH | 46.09 | - | |
24 | Phosphorylation | DELRKKLYQTFKDRG HHHHHHHHHHHHHCC | 17.87 | 28152594 | |
26 | Phosphorylation | LRKKLYQTFKDRGIL HHHHHHHHHHHCCHH | 21.06 | 28152594 | |
28 | Ubiquitination | KKLYQTFKDRGILDT HHHHHHHHHCCHHHH | 50.32 | - | |
37 | Ubiquitination | RGILDTLKTQLRNQL CCHHHHHHHHHHHHH | 36.00 | 21890473 | |
37 (in isoform 1) | Ubiquitination | - | 36.00 | 21890473 | |
37 (in isoform 2) | Ubiquitination | - | 36.00 | 21890473 | |
37 (in isoform 3) | Ubiquitination | - | 36.00 | 21890473 | |
61 | Phosphorylation | SGELQPRSISVEGSS CCCCCCCEEEECCCE | 26.37 | 30108239 | |
63 | Phosphorylation | ELQPRSISVEGSSLL CCCCCEEEECCCEEE | 18.50 | 25849741 | |
67 | Phosphorylation | RSISVEGSSLLIGAS CEEEECCCEEEECCC | 12.33 | 27251275 | |
68 | Phosphorylation | SISVEGSSLLIGASN EEEECCCEEEECCCC | 37.74 | 26471730 | |
104 | Ubiquitination | ESGLAKEKVFTMQDL CCCCCCCCEECHHHH | 41.77 | 21890473 | |
104 (in isoform 1) | Ubiquitination | - | 41.77 | 21890473 | |
104 (in isoform 2) | Ubiquitination | - | 41.77 | 21890473 | |
104 (in isoform 3) | Ubiquitination | - | 41.77 | 21890473 | |
125 | Ubiquitination | NPTSSLYKSLVSGSD CCCCHHHHHHHCCCC | 42.48 | 21890473 | |
125 (in isoform 1) | Ubiquitination | - | 42.48 | 21890473 | |
125 (in isoform 2) | Ubiquitination | - | 42.48 | 21890473 | |
125 (in isoform 3) | Ubiquitination | - | 42.48 | 21890473 | |
133 | Ubiquitination | SLVSGSDKENQKGFL HHHCCCCCCCHHHHH | 61.33 | - | |
137 | Ubiquitination | GSDKENQKGFLMHFL CCCCCCHHHHHHHHH | 64.31 | - | |
154 | Ubiquitination | LAEYHQAKESCNMET HHHHHHHHHHCCCCC | 43.52 | - | |
156 | Phosphorylation | EYHQAKESCNMETQT HHHHHHHHCCCCCCC | 15.30 | 23312004 | |
161 | Phosphorylation | KESCNMETQTSSTFN HHHCCCCCCCCCCCC | 26.78 | 23312004 | |
163 | Phosphorylation | SCNMETQTSSTFNRD HCCCCCCCCCCCCHH | 31.87 | 23312004 | |
164 | Phosphorylation | CNMETQTSSTFNRDS CCCCCCCCCCCCHHH | 19.98 | 27251275 | |
165 | Phosphorylation | NMETQTSSTFNRDSL CCCCCCCCCCCHHHH | 40.17 | 27251275 | |
166 | Phosphorylation | METQTSSTFNRDSLA CCCCCCCCCCHHHHH | 25.38 | 27251275 | |
171 | Phosphorylation | SSTFNRDSLAEKLQL CCCCCHHHHHHHHHH | 26.66 | 18491316 | |
175 | Ubiquitination | NRDSLAEKLQLIDDQ CHHHHHHHHHHHCHH | 35.61 | 21906983 | |
175 (in isoform 1) | Ubiquitination | - | 35.61 | 21890473 | |
175 (in isoform 2) | Ubiquitination | - | 35.61 | 21890473 | |
175 (in isoform 3) | Ubiquitination | - | 35.61 | 21890473 | |
192 | Ubiquitination | DAYPQRIKFESLEIK HHCCCCCEEEEEEHH | 45.31 | 21890473 | |
192 (in isoform 1) | Ubiquitination | - | 45.31 | 21890473 | |
192 (in isoform 2) | Ubiquitination | - | 45.31 | 21890473 | |
192 (in isoform 3) | Ubiquitination | - | 45.31 | 21890473 | |
195 | Phosphorylation | PQRIKFESLEIKLNE CCCCEEEEEEHHHHH | 34.14 | 28450419 | |
199 | Ubiquitination | KFESLEIKLNEYKRE EEEEEEHHHHHHHHH | 35.57 | - | |
204 | Ubiquitination | EIKLNEYKREIEEQL EHHHHHHHHHHHHHH | 37.06 | - | |
218 | Ubiquitination | LRAEMCQKLKFFKDT HHHHHHHHCCCCCCC | 49.03 | - | |
220 | Acetylation | AEMCQKLKFFKDTEI HHHHHHCCCCCCCHH | 56.65 | 26051181 | |
223 | Ubiquitination | CQKLKFFKDTEIAKI HHHCCCCCCCHHHHH | 67.86 | - | |
229 | Ubiquitination | FKDTEIAKIKMEAKK CCCCHHHHHHHHHHH | 48.82 | - | |
256 | Ubiquitination | FEKACQAKSEALVLR HHHHHHHHHHHHHHH | 23.97 | - | |
267 | Phosphorylation | LVLREKSTLERIHKH HHHHCHHHHHHHHHC | 43.64 | 21130716 | |
273 | Ubiquitination | STLERIHKHQEIETK HHHHHHHHCCCCCHH | 44.61 | - | |
280 | Ubiquitination | KHQEIETKEIYAQRQ HCCCCCHHHHHHHHH | 29.35 | - | |
291 | Ubiquitination | AQRQLLLKDMDLLRG HHHHHHHHHHHHHHC | 51.48 | - | |
304 | Ubiquitination | RGREAELKQRVEAFE HCCHHHHHHHHHHHH | 27.80 | - | |
315 | Ubiquitination | EAFELNQKLQEEKHK HHHHHHHHHHHHHHH | 51.57 | - | |
322 | Ubiquitination | KLQEEKHKSITEALR HHHHHHHHHHHHHHH | 55.40 | - | |
336 | Ubiquitination | RRQEQNIKSFEETYD HHHHHHHHHHHHHHH | 57.55 | - | |
347 | Ubiquitination | ETYDRKLKNELLKYQ HHHHHHHHHHHHHHH | 51.95 | - | |
358 | Ubiquitination | LKYQLELKDDYIIRT HHHHHHCCCCEEHHC | 38.90 | - | |
378 | Ubiquitination | DERKNKEKAVHLQEE HHHHCHHHHHHHHHH | 58.27 | - | |
391 | Phosphorylation | EELIAINSKKEELNQ HHHHHHHCCHHHHHH | 38.70 | 24260401 | |
392 | Ubiquitination | ELIAINSKKEELNQS HHHHHHCCHHHHHHH | 60.77 | - | |
393 | Ubiquitination | LIAINSKKEELNQSV HHHHHCCHHHHHHHH | 57.13 | - | |
399 | Phosphorylation | KKEELNQSVNRVKEL CHHHHHHHHHHHHHH | 21.93 | - | |
404 | Ubiquitination | NQSVNRVKELELELE HHHHHHHHHHHHHHH | 54.03 | - | |
414 | Ubiquitination | ELELESVKAQSLAIT HHHHHHHHHHHHHHH | 50.41 | - | |
417 | Phosphorylation | LESVKAQSLAITKQN HHHHHHHHHHHHHHH | 25.32 | - | |
422 | Ubiquitination | AQSLAITKQNHMLNE HHHHHHHHHHHHHCH | 42.88 | - | |
437 | Phosphorylation | KVKEMSDYSLLKEEK HHHHHCCHHHHHHHH | 8.23 | 24719451 | |
438 | Phosphorylation | VKEMSDYSLLKEEKL HHHHCCHHHHHHHHH | 32.01 | 24719451 | |
441 | Sumoylation | MSDYSLLKEEKLELL HCCHHHHHHHHHHHH | 69.95 | - | |
441 | Sumoylation | MSDYSLLKEEKLELL HCCHHHHHHHHHHHH | 69.95 | - | |
441 | Ubiquitination | MSDYSLLKEEKLELL HCCHHHHHHHHHHHH | 69.95 | - | |
444 | Ubiquitination | YSLLKEEKLELLAQN HHHHHHHHHHHHHHC | 48.64 | - | |
444 (in isoform 3) | Ubiquitination | - | 48.64 | 21890473 | |
452 | Ubiquitination | LELLAQNKLLKQQLE HHHHHHCHHHHHHHH | 43.02 | - | |
455 | Ubiquitination | LAQNKLLKQQLEESR HHHCHHHHHHHHHHH | 46.57 | - | |
484 | Ubiquitination | PELAVFQKELRKAEK HHHHHHHHHHHHHHH | 47.45 | 21906983 | |
484 (in isoform 1) | Ubiquitination | - | 47.45 | 21890473 | |
491 | Ubiquitination | KELRKAEKAIVVEHE HHHHHHHHCEEECCH | 48.55 | - | |
493 (in isoform 3) | Ubiquitination | - | 5.44 | 21890473 | |
509 | Ubiquitination | SCRQALHKQLQDEIE HHHHHHHHHHHHHHH | 54.26 | - | |
522 | Ubiquitination | IEHSAQLKAQILGYK HHHHHHHHHHHHCHH | 26.60 | - | |
529 | Ubiquitination | KAQILGYKASVKSLT HHHHHCHHHHHHHHH | 32.18 | - | |
533 | Ubiquitination | LGYKASVKSLTTQVA HCHHHHHHHHHHHHH | 36.93 | 21906983 | |
533 (in isoform 1) | Ubiquitination | - | 36.93 | 21890473 | |
547 | Ubiquitination | ADLKLQLKQTQTALE HHHHHHHHHHHHHHH | 38.04 | - | |
558 | Phosphorylation | TALENEVYCNPKQSV HHHHCCCCCCCCHHH | 4.74 | 21945579 | |
562 | Ubiquitination | NEVYCNPKQSVIDRS CCCCCCCCHHHHCCC | 41.01 | - | |
586 | Phosphorylation | VPCNGEISGDFLNNP ECCCCEECCCHHCCC | 28.18 | 27251275 | |
592 (in isoform 3) | Ubiquitination | - | 45.60 | 21890473 | |
609 | Phosphorylation | RMVASRITNYPTAWV HHHHHHHHCCCCEEE | 27.82 | 27732954 | |
611 | Phosphorylation | VASRITNYPTAWVEG HHHHHHCCCCEEECC | 8.03 | 27732954 | |
613 | Phosphorylation | SRITNYPTAWVEGSS HHHHCCCCEEECCCC | 23.85 | 27732954 | |
619 | Phosphorylation | PTAWVEGSSPDSDLE CCEEECCCCCCCCHH | 25.78 | 20873877 | |
620 | Phosphorylation | TAWVEGSSPDSDLEF CEEECCCCCCCCHHH | 43.51 | 20873877 | |
623 | Phosphorylation | VEGSSPDSDLEFVAN ECCCCCCCCHHHHHC | 47.69 | 20873877 | |
631 | Phosphorylation | DLEFVANTKARVKEL CHHHHHCHHHHHHHH | 19.15 | 27732954 | |
632 | Ubiquitination | LEFVANTKARVKELQ HHHHHCHHHHHHHHH | 33.72 | 2190698 | |
632 (in isoform 1) | Ubiquitination | - | 33.72 | 21890473 | |
636 | Ubiquitination | ANTKARVKELQQEAE HCHHHHHHHHHHHHH | 47.34 | - | |
651 | Phosphorylation | RLEKAFRSYHRRVIK HHHHHHHHHHHHHHH | 20.88 | 24719451 | |
652 | Phosphorylation | LEKAFRSYHRRVIKN HHHHHHHHHHHHHHC | 8.62 | 27251275 | |
660 | Phosphorylation | HRRVIKNSAKSPLAA HHHHHHCCCCCCHHH | 31.88 | 22777824 | |
662 | Ubiquitination | RVIKNSAKSPLAAKS HHHHCCCCCCHHHCC | 53.05 | - | |
663 | Phosphorylation | VIKNSAKSPLAAKSP HHHCCCCCCHHHCCC | 25.51 | 25159151 | |
668 | Ubiquitination | AKSPLAAKSPPSLHL CCCCHHHCCCCCHHH | 58.87 | - | |
669 | Phosphorylation | KSPLAAKSPPSLHLL CCCHHHCCCCCHHHH | 37.00 | 29255136 | |
672 | Phosphorylation | LAAKSPPSLHLLEAF HHHCCCCCHHHHHHH | 31.63 | 22617229 | |
680 | Ubiquitination | LHLLEAFKNITSSSP HHHHHHHHCCCCCCC | 55.26 | - | |
683 | Phosphorylation | LEAFKNITSSSPERH HHHHHCCCCCCCCHH | 31.76 | 28176443 | |
684 | Phosphorylation | EAFKNITSSSPERHI HHHHCCCCCCCCHHC | 25.64 | 25159151 | |
685 | Phosphorylation | AFKNITSSSPERHIF HHHCCCCCCCCHHCC | 41.06 | 23401153 | |
686 | Phosphorylation | FKNITSSSPERHIFG HHCCCCCCCCHHCCC | 30.46 | 23401153 | |
718 | Phosphorylation | NDVVEALTGSAASRL HHHHHHHHHHHHHHH | 35.82 | 19691289 | |
720 | Phosphorylation | VVEALTGSAASRLRG HHHHHHHHHHHHHCC | 18.54 | 29255136 | |
723 | Phosphorylation | ALTGSAASRLRGGTS HHHHHHHHHHCCCCC | 31.40 | 25262027 | |
735 | Phosphorylation | GTSSRRLSSTPLPKA CCCCCCCCCCCCCHH | 30.29 | 25159151 | |
736 | Phosphorylation | TSSRRLSSTPLPKAK CCCCCCCCCCCCHHH | 38.34 | 22617229 | |
737 | Phosphorylation | SSRRLSSTPLPKAKR CCCCCCCCCCCHHHH | 26.01 | 25159151 | |
741 | Ubiquitination | LSSTPLPKAKRSLES CCCCCCCHHHHHHHH | 74.38 | - | |
745 | Phosphorylation | PLPKAKRSLESEMYL CCCHHHHHHHHHHHH | 35.46 | 25159151 | |
748 | Phosphorylation | KAKRSLESEMYLEGL HHHHHHHHHHHHHCC | 32.72 | 30108239 | |
751 | Phosphorylation | RSLESEMYLEGLGRS HHHHHHHHHHCCCCC | 9.50 | 29978859 | |
758 | Phosphorylation | YLEGLGRSHIASPSP HHHCCCCCCCCCCCC | 19.90 | 30266825 | |
762 | Phosphorylation | LGRSHIASPSPCPDR CCCCCCCCCCCCCCC | 25.88 | 23401153 | |
764 | Phosphorylation | RSHIASPSPCPDRMP CCCCCCCCCCCCCCC | 36.32 | 30266825 | |
774 | Phosphorylation | PDRMPLPSPTESRHS CCCCCCCCCCCCCCC | 52.73 | 29255136 | |
776 | Phosphorylation | RMPLPSPTESRHSLS CCCCCCCCCCCCCCC | 51.43 | 19691289 | |
778 | Phosphorylation | PLPSPTESRHSLSIP CCCCCCCCCCCCCCC | 37.46 | 19691289 | |
781 | Phosphorylation | SPTESRHSLSIPPVS CCCCCCCCCCCCCCC | 23.77 | 25693802 | |
783 | Phosphorylation | TESRHSLSIPPVSSP CCCCCCCCCCCCCCC | 35.74 | 25693802 | |
788 | Phosphorylation | SLSIPPVSSPPEQKV CCCCCCCCCCHHHHH | 42.79 | 30266825 | |
789 | Phosphorylation | LSIPPVSSPPEQKVG CCCCCCCCCHHHHHC | 44.71 | 30266825 | |
808 | Phosphorylation | QTELQDKSEFSDVDK CCCCCCCCCCCCHHH | 52.76 | 27251275 | |
811 | Phosphorylation | LQDKSEFSDVDKLAF CCCCCCCCCHHHHHC | 32.45 | 28348404 | |
815 | Ubiquitination | SEFSDVDKLAFKDNE CCCCCHHHHHCCCCH | 41.38 | - | |
826 | Phosphorylation | KDNEEFESSFESAGN CCCHHHHHHHHHCCC | 45.72 | 22199227 | |
827 | Phosphorylation | DNEEFESSFESAGNM CCHHHHHHHHHCCCC | 26.32 | 22199227 | |
830 | Phosphorylation | EFESSFESAGNMPRQ HHHHHHHHCCCCCCE | 39.19 | 22199227 | |
844 | Phosphorylation | QLEMGGLSPAGDMSH EECCCCCCCCCCCCH | 18.91 | 30108239 | |
850 | Phosphorylation | LSPAGDMSHVDAAAA CCCCCCCCHHHHHHH | 25.71 | 30108239 | |
871 | Acetylation | QHPSVDQKQIEEQKE CCCCCCHHHHHHHHH | 49.10 | 19816709 | |
888 | "N6,N6-dimethyllysine" | KIREQQVKERRQREE HHHHHHHHHHHHHHH | 40.96 | - | |
888 | Methylation | KIREQQVKERRQREE HHHHHHHHHHHHHHH | 40.96 | - | |
899 | Phosphorylation | QREERRQSNLQEVLE HHHHHHHHHHHHHHH | 37.38 | 23401153 | |
914 | Ubiquitination | RERRELEKLYQERKM HHHHHHHHHHHHHHH | 66.18 | - | |
916 | Phosphorylation | RRELEKLYQERKMIE HHHHHHHHHHHHHHH | 21.28 | 28152594 | |
943 | Phosphorylation | MENELEMSNQEIKDK HHHHHHHCCHHHHCC | 26.45 | 25159151 | |
951 | Phosphorylation | NQEIKDKSAHSENPL CHHHHCCCCCCCCHH | 41.15 | 23663014 | |
954 | Phosphorylation | IKDKSAHSENPLEKY HHCCCCCCCCHHHHH | 38.49 | 23663014 | |
963 | Ubiquitination | NPLEKYMKIIQQEQD CHHHHHHHHHHHHHH | 33.30 | - | |
973 | Phosphorylation | QQEQDQESADKSSKK HHHHHHHHCCHHHHH | 35.81 | 28985074 | |
977 | Phosphorylation | DQESADKSSKKMVQE HHHHCCHHHHHHHHC | 48.19 | 20860994 | |
978 | Phosphorylation | QESADKSSKKMVQEG HHHCCHHHHHHHHCC | 41.87 | 27732954 | |
986 | Phosphorylation | KKMVQEGSLVDTLQS HHHHHCCCHHHHHCC | 25.19 | 21815630 | |
1011 | Phosphorylation | SHEELDDSW------ CHHHCCCCC------ | 34.06 | 25159151 |
Modified Location | Modified Residue | Modification | Type of Upstream Proteins | Gene Name of Upstream Proteins | UniProt AC of Upstream Proteins | Sources |
---|---|---|---|---|---|---|
Oops, there are no upstream regulatory protein records of OFD1_HUMAN !! |
Modified Location | Modified Residue | Modification | Function | Reference | ||
---|---|---|---|---|---|---|
Oops, there are no descriptions of PTM sites of OFD1_HUMAN !! |
* Distance = the distance between SAP position and PTM sites.
Modified Location | Modification | Variant Position (Distance <= 10) |
Residue Change | SAP | Related Disease | Reference |
---|---|---|---|---|---|---|
Oops, there are no SNP-PTM records of OFD1_HUMAN !! |
Kegg Disease | ||||||
---|---|---|---|---|---|---|
There are no disease associations of PTM sites. | ||||||
OMIM Disease | ||||||
311200 | Orofaciodigital syndrome 1 (OFD1) | |||||
300209 | Simpson-Golabi-Behmel syndrome 2 (SGBS2) | |||||
300804 | Joubert syndrome 10 (JBTS10) | |||||
300424 | Retinitis pigmentosa 23 (RP23) | |||||
Kegg Drug | ||||||
There are no disease associations of PTM sites. | ||||||
DrugBank | ||||||
There are no disease associations of PTM sites. |
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Phosphorylation | |
Reference | PubMed |
"A quantitative atlas of mitotic phosphorylation."; Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E.,Elledge S.J., Gygi S.P.; Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008). Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-669 AND SER-686, ANDMASS SPECTROMETRY. |