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. Author manuscript; available in PMC: 2021 Nov 26.
Published in final edited form as: Biochemistry. 2017 Apr 17;56(17):2282–2293. doi: 10.1021/acs.biochem.7b00034

Table 1.

Cross-linked peptide pairs between P450 11B1/11B2 and Adx (A & B molecules)

Index Charge PP* PP2 PPtag m/z MW(obs) MW CYP11B1** CYP11B2** Adx** Modification***
3433 4 37.3 24.1 1.7 348.1758 1389.6815 1389.6951 HPQKAT TVADARQ(B) PyrQ
4433 3 6.7 14.0 1.8 550.2820 1648.8314 1648.8180 KAALKETL EENDML(A) AceB, DANQ
4924 3 16.9 14.2 3.7 402.2232 1204.6552 1204.6606 KAALK DMLDLA(A) OxiM
6267 4 18.3 9.6 1.4 767.8810 3068.5023 3068.4841 ASISEHPQKATTEL DNMTVRVPETVADA(B) AceB, OxiM
6457 4 35.1 14.3 2.6 343.9506 1372.7805 1372.7756 TELPLLKA MLDL(A) OxiM
6990 4 28.1 14.0 4.5 351.9259 1404.6817 1404.6866 ISEHPQKA DARQ(B) PyrQ, AceB
9782 2 10.9 12.6 2.1 903.9162 1806.8251 1806.8426 RAALKET EENDMLDL(A) DANQ, OxiM, AceB
*

The quality of a peptide match is mainly evaluated by three statistical scores: pp, pp2, pptag. A peptide match with max (pp,pp2) > 3.7 and pptag > 1.3 is considered to be significant with p value < 0.05.

**

The cross-linked residues are underlined.

***

Variable modifications: deamidation of NQ (DANQ), pyro-Glu from Q (PyrQ), oxidation of M (OxiM), and acetylation of N-term (AceB)