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Table 1 Key-site haplotypes for LWS opsin duplicates in fish and humans.

From: The molecular basis of color vision in colorful fish: Four Long Wave-Sensitive (LWS) opsins in guppies (Poecilia reticulata) are defined by amino acid substitutions at key functional sites

Key Site Position

Guppy LWS S180

Guppy LWS A180

Guppy LWS P180

Guppy LWS S180r

Killifish LWS A

Killifish LWS B

Rice fish LWS A

Rice fish LWS B

Zebrafish LWS 1

Zebrafish LWS 2

Cave fish LWS g101

Cave fish LWS g103

Human LWS

Human MWS

180

S

A

P

S

S

S

S

S

A

A

A

A

S

A

197

H

H

H

H

H

H

H

H

H

H

H

H

H

H

277

Y

Y

F

Y

Y

Y

Y

Y

Y

F

F

F

Y

F

285

T

T

A

T

T

T

T

T

T

T

A

A

T

A

308

A

A

A

A

A

A

A

A

A

A

A

A

A

A

Expected λmax (nm)

~560

~553

~531 +P

~560

~560

~560

~560

~560

~553

~546

~531

~531

~560

~531

  1. The λmax of each LWS opsin is estimated from the spectral shift predicted by each key-site substitution. The influence of the proline residue at position 180 is not known.