. 2022 Jan 14;8:796229. doi: 10.3389/fmolb.2021.796229

TABLE 2.

X-ray structures containing chloride anions at the C-terminus of the M2 proton channel.

PDB ID	Resolution (Å)	Construct (mutant)	Experimental conditions	References
5C02	1.59	22–46 (S31N)	pH: 8.0 T: 283/100 K ^a	Thomaston and DeGrado, (2016)
5C02	1.59	22–46 (S31N)	LCP (OG) ^b	Thomaston and DeGrado, (2016)
6BMZ	2.63	22–46	pH: 7.0 T: 293/100 K	Thomaston et al. (2018)
6BMZ	2.63	22–46	LCP (MNG-3-C8) ^b	Thomaston et al. (2018)
6NV1	2.50	22–46 (V27A)	pH: 7.5 T: 293/100 K	Thomaston et al. (2020)
6NV1	2.50	22–46 (V27A)	LCP (MNG-3-C8)	Thomaston et al. (2020)
6US8	1.70	22–46	pH: 7.5 T: 293/100 K	Thomaston et al. (2021)
6US8	1.70	22–46	LCP (MNG-3-C8)	Thomaston et al. (2021)
6US9	2.00	22–46	pH: 8.5 T: 293/100 K	Thomaston et al. (2021)
6US9	2.00	22–46	LCP (MNG-3-C8)	Thomaston et al. (2021)

^aTemperature of crystallization/temperature of data collection (values in Kelvin).

^bObtained consideringa lipidic cubic phase (LPC) formed by monoolein and octyl glucopyranoside (OG) or maltose neopentyl glycol analogue (MNG-3-C8).