Contacts of the strand formed by residues 419 - 423 (chain A) in PDB entry 1IVV
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with ILE 419 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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286A ASP* 3.3 33.7 - - - +
288A SER* 6.0 0.2 - - - -
291A ARG* 4.5 4.0 - - - +
409A SER* 3.7 10.8 - - - +
410A ALA 4.2 2.0 - - - +
411A PHE* 3.4 16.8 - - + -
412A PRO* 3.9 22.0 - - + -
416A SER* 3.1 33.2 + - - +
417A ASP 3.7 0.4 - - - -
418A ASN* 1.3 86.9 - - - +
420A SER* 1.3 64.4 + - - +
427A GLY* 3.7 9.9 - - - -
428A ALA 3.2 31.2 - - - +
429A PRO* 4.2 3.8 - - + -
430A PHE* 3.6 8.7 - - - -
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Residues in contact with SER 420 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
411A PHE* 3.8 4.7 - - - -
419A ILE* 1.3 74.1 - - - +
421A GLN* 1.3 63.9 + - - +
422A LEU* 4.8 0.2 - - - +
427A GLY* 3.3 3.3 - - - -
428A ALA* 2.7 42.3 + - - +
430A PHE* 3.4 16.9 - - - -
594A PRO* 2.8 36.6 + - - +
472B ARG* 4.7 7.9 - - - -
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Residues in contact with GLN 421 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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411A PHE* 3.6 39.6 - - + +
420A SER* 1.3 78.3 - - - +
422A LEU* 1.3 63.0 + - - +
423A ALA 2.8 32.8 + - - +
424A PRO* 3.6 4.6 - - - +
425A GLY* 2.9 22.0 - - - +
426A LEU 3.4 5.8 - - - +
594A PRO 4.9 0.5 - - - +
595A ARG* 5.5 0.2 - - - -
596A VAL* 3.9 16.6 + - - +
506B LEU* 3.8 29.3 - - + +
508B GLU* 6.6 0.7 - - + -
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Residues in contact with LEU 422 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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406A VAL* 3.4 30.1 - - + -
408A THR* 4.2 4.0 - - + -
421A GLN* 1.3 76.8 - - - +
423A ALA* 1.3 63.8 + - - +
426A LEU* 2.9 13.2 + - + +
427A GLY 4.0 8.7 - - - +
428A ALA* 3.6 27.4 - - + -
594A PRO* 3.9 12.3 - - + +
595A ARG 3.3 30.7 - - - +
596A VAL* 3.9 17.1 - - - +
598A ASP* 4.9 1.3 - - + -
599A TRP* 3.6 38.8 - - + +
505B ARG* 4.5 4.0 + - - -
506B LEU* 3.6 11.9 - - - +
618B ASP 4.8 0.5 - - - +
619B ARG* 5.9 0.5 - - - +
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Residues in contact with ALA 423 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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200A GLU* 4.0 8.5 - - + +
421A GLN* 2.8 22.8 + - - +
422A LEU* 1.3 79.7 - - - +
424A PRO* 1.3 77.3 - - + +
425A GLY 3.0 0.5 + - - -
426A LEU* 3.0 30.5 + - + -
599A TRP* 4.4 9.0 - - + +
505B ARG* 3.8 11.7 - - - +
506B LEU* 3.8 11.1 - - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il