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Table 3 Linear and piecewise regression statistics for models of N content against expression level (log 2 transcript abundance) in 27 Drosophila melanogaster tissues, in descending order of the estimated slope of the relationship in the high-expression cluster (expression > 5.5)

From: GRASP [Genomic Resource Access for Stoichioproteomics]: comparative explorations of the atomic content of 12 Drosophila proteomes

  Linear regression Piecewise regression Linear vs. piecewise
Tissue Estimate SE Estimate (< 5.5) SE (< 5.5) Estimate (> 5.5) SE (> 5.5) F p Sig.
Larval midgut −0.003092 0.000332 0.000539 0.001152 −0.007019 0.000798 21.74 <0.001 ***
Adult midgut −0.002606 0.000331 −0.000192 0.001157 −0.006411 0.000805 15.86 <0.001 ***
Larval Malpighian tubule −0.001542 0.000315 −0.000169 0.001168 −0.006314 0.000818 20.20 <0.001 ***
Adult Malpighian tubule −0.001756 0.000325 0.000103 0.001211 −0.006128 0.000803 18.41 <0.001 ***
Larval hindgut −0.002210 0.000324 −0.000267 0.001172 −0.005367 0.000821 10.35 <0.001 ***
Adult hindgut −0.002262 0.000330 −0.001324 0.001178 −0.005303 0.000799 8.81 <0.001 ***
Cultured S2 cells 0.000309 0.000292 −0.000082 0.001210 −0.005190 0.000885 22.58 <0.001 ***
Larval residual −0.001548 0.000333 0.000140 0.001183 −0.004714 0.000812 10.04 <0.001 ***
Larval fat body 0.000439 0.000355 0.003550 0.001219 −0.004449 0.000781 27.03 <0.001 ***
Adult trachea −0.000705 0.000323 0.000876 0.001216 −0.004427 0.000822 12.73 <0.001 ***
Adult heart −0.001064 0.000305 −0.000146 0.001105 −0.004321 0.000792 10.04 <0.001 ***
Adult crop −0.001076 0.000332 −0.000110 0.001232 −0.003892 0.000807 7.44 0.001 ***
Whole adult fly −0.001281 0.000401 −0.001290 0.001380 −0.003696 0.000883 4.94 0.007 **
Adult head −0.002018 0.000349 0.000421 0.001221 −0.003671 0.000827 5.72 0.003 **
Mated spermatheca −0.001020 0.000327 −0.000607 0.001188 −0.003608 0.000811 6.08 0.002 **
Virgin spermatheca −0.000984 0.000322 0.000112 0.001154 −0.003364 0.000800 5.64 0.004 **
Larval salivary gland −0.000248 0.000319 0.000352 0.001228 −0.003288 0.000814 8.24 0.000 ***
Adult residual −0.001764 0.000367 0.000961 0.001281 −0.003147 0.000785 5.19 0.006 **
Adult accessory gland −0.000337 0.000337 −0.001018 0.001256 −0.002881 0.000836 6.46 0.002 **
Adult salivary gland −0.000849 0.000361 −0.002055 0.001388 −0.002713 0.000774 4.99 0.007 **
Adult eye −0.001458 0.000323 −0.000439 0.001152 −0.002687 0.000798 1.95 0.142  
Adult fat body −0.001053 0.000341 −0.000622 0.001209 −0.002384 0.000791 1.75 0.174  
Thoracico-abdominal ganglion −0.000649 0.000332 −0.001418 0.001237 −0.002359 0.000860 3.19 0.041 *
Larval CNS 0.000165 0.000323 −0.001832 0.001297 −0.002176 0.000937 7.43 0.001 ***
Adult brain −0.000537 0.000323 −0.001098 0.001241 −0.002089 0.000906 2.20 0.111  
Ovary 0.000965 0.000277 −0.001613 0.001319 −0.000418 0.001010 6.68 0.001 **
Testis 0.001925 0.000345 0.001978 0.001226 0.003557 0.000937 1.85 0.157  
  1. For details, see Methods.