Table 2 Metabolic enzymes for which cellular abundance was related to adaptation to high-salt conditions.

From: Diversity of prokaryotic microorganisms in alkaline saline soil of the Qarhan Salt Lake area in the Qinghai–Tibet Plateau

Taxa	Enzyme No	KEGG No	Type of enzyme	Abundance
Taxa	Enzyme No	KEGG No	Type of enzyme	QSB	QSG1	QSG2	QSG3	QSG4
Bacteria	1.4.1.13/1.4.1.14	K00266	Glutamate synthase (NADPH/NADH) small chain	30,397	30,001	33,352	31,344	26,406
	6.3.1.2	K01915	Glutamine synthetase	26,337	26,850	31,833	27,808	23,459
	1.2.1.8	K00130	Betaine-aldehyde dehydrogenase	24,450	19,588	25,485	22,474	25,803
	1.5.3.1	K00303	Sarcosine oxidase, subunit beta	10,861	8942	12,185	10,113	10,499
	1.5.1.2	K00286	Pyrroline-5-carboxylate reductase	10,282	10,506	11,645	10,995	8691
	1.4.1.13/1.4.1.14	K00265	Glutamate synthase (NADPH/NADH) large chain	9881	10,661	11,912	11,643	7185
	2.7.7.42	K00982	Glutamate-ammonia-ligase adenylyltransferase	8380	7815	9945	8467	7853
	1.4.1.2	K00260	Glutamate dehydrogenase	6967	6655	8671	7069	6739
	1.4.1.3	K00261	Glutamate dehydrogenase (NAD(P)+)	7014	6237	7835	7698	6566
	1.5.3.1	K00302	Sarcosine oxidase, subunit alpha	6707	5610	7793	6285	6074
	1.5.3.1	K00304	Sarcosine oxidase, subunit delta	6678	5590	7723	6244	6078
	1.5.3.1	K00305	Sarcosine oxidase, subunit gamma	6224	5161	7112	5809	5746
	3.6.3.32	K02000	Glycine betaine/proline transport system ATP-binding protein	5905	4772	6228	5528	5424
	3.1.3.12	K01087	Trehalose-phosphatase	5640	4492	6090	5153	5230
	3.1.6.6	K01133	Choline-sulfatase	4959	4072	5275	4672	4815
	1.4.7.1	K00284	Glutamate synthase (ferredoxin)	3810	3187	4049	3581	4117
	1.5.3.1	K00301	Sarcosine oxidase	2319	2942	3882	2762	2178
	1.4.1.4	K00262	Glutamate dehydrogenase (NADP+)	2850	2865	1420	2223	869
	1.14.11.-	K00674	Ectoine hydroxylase	227	508	704	647	205
	3.2.1.93	K01226	Trehalose-6-phosphate hydrolase	150	96	48	35	5
	4.2.1.108	K06720	l-Ectoine synthase	107	38	37	71	64
	2.3.1.178	K06718	l-2,4-Diaminobutyric acid acetyltransferase	103	38	37	55	61
	1.5.3.1/1.5.3.7	K00306	Sarcosine oxidase/l-pipecolate oxidase	0	0	0	12	0
Archaea	1.4.1.3	K00261	Glutamate dehydrogenase (NAD(P)+)	35,517	44,521	82,617	112,244	57,820
	6.3.1.2	K01915	Glutamine synthetase	35,133	59,573	35,278	50,496	34,394
	1.4.1.13/1.4.1.14	K00265	Glutamate synthase (NADPH/NADH) large chain	26,151	19,646	62,308	53,274	49,897
	1.5.3.1	K00303	Sarcosine oxidase, subunit beta	20,100	9823	36,957	61,074	24,948
	1.5.1.2	K00286	Pyrroline-5-carboxylate reductase	20,592	34,698	17,267	14,484	17,282
	3.1.6.6	K01133	Choline-sulfatase	15,417	9823	20,790	31,252	17,282
	1.4.1.13/1.4.1.14	K00266	Glutamate synthase (NADPH/NADH) small chain	0	49,750	0	12,380	9446
	3.1.3.12	K01087	Trehalose-phosphatase	4683	0	14,914	29,822	7667
	1.2.1.8	K00130	Betaine-aldehyde dehydrogenase	4683	0	12,724	29,822	7667
	3.6.3.32	K02000	Glycine betaine/proline transport system ATP-binding protein	0	24,875	0	6190	4723
	1.5.3.1	K00301	Sarcosine oxidase	0	0	12,265	6864	7667
	1.4.1.4	K00262	Glutamate dehydrogenase (NADP+)	9858	0	0	0	0
	1.4.1.2	K00260	Glutamate dehydrogenase	0	0	459	0	256

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Table 2 Metabolic enzymes for which cellular abundance was related to adaptation to high-salt conditions.

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