Contacts of the helix formed by residues 474 - 480 (chain B) in PDB entry 1ZM9
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 ASP 474 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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439B TYR* 4.1 0.9 - - - -
472B ALA* 3.2 5.0 - - + +
473B GLY* 1.3 73.0 - - - +
475B PRO* 1.3 78.8 - - - +
476B ALA* 2.9 22.8 + - - +
477B LEU* 2.9 20.7 + - + +
478B ALA 3.3 6.8 + - - -
551B ARG* 3.7 24.1 - - + +
552B LEU* 5.2 4.6 + - + +
587B ILE* 5.9 0.7 - - - +
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Residues in contact with PRO 475 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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439B TYR* 3.1 57.4 - - + +
473B GLY 3.4 1.6 - - - +
474B ASP* 1.3 88.3 - - - +
476B ALA* 1.3 51.7 + - - +
478B ALA* 2.9 2.6 + - + +
479B TYR* 2.5 36.6 + - - +
498B LEU* 4.1 7.9 - - + +
571B ILE* 3.8 19.5 - - + -
582B LEU* 3.9 4.5 - - + -
587B ILE* 4.2 17.9 - - + -
592B GLN* 5.4 5.8 - - - +
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Residues in contact with ALA 476 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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474B ASP* 2.9 20.3 + - - +
475B PRO* 1.3 78.9 - - - +
477B LEU* 1.3 61.3 + - - +
479B TYR* 3.1 16.5 - - - +
480B GLY* 3.6 4.9 + - - -
551B ARG* 4.9 11.7 + - - +
581B ASP* 5.6 2.1 - - - +
582B LEU* 3.5 30.7 + - + +
587B ILE* 6.2 0.2 - - + -
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Residues in contact with LEU 477 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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472B ALA* 3.9 9.9 - - + -
474B ASP* 2.9 12.3 + - + +
476B ALA* 1.3 76.5 - - - +
478B ALA* 1.3 66.4 + - - +
480B GLY* 3.6 4.9 + - - -
481B TYR* 3.2 28.3 - - + +
546B GLU* 3.9 18.4 - - + +
551B ARG* 2.6 54.9 - - + +
552B LEU 3.6 27.6 - - - +
553B GLU* 4.4 4.0 - - + +
700B P34 4.0 15.0 - - + -
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Residues in contact with ALA 478 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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439B TYR* 3.6 24.0 - - + +
441B GLY* 3.8 3.7 - - - +
472B ALA* 4.4 2.4 - - + +
474B ASP 3.3 4.0 + - - +
475B PRO 2.9 9.1 + - - +
477B LEU* 1.3 78.0 - - - +
479B TYR* 1.3 69.0 + - - +
481B TYR* 2.8 21.8 + - - +
482B ALA 3.8 2.3 + - - -
498B LEU* 3.4 20.0 - - + -
700B P34 3.3 25.6 - - - +
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Residues in contact with TYR 479 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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475B PRO 2.5 15.5 + - - +
476B ALA 3.1 15.3 - - - +
478B ALA* 1.3 72.3 - - - +
480B GLY* 1.3 56.6 + - - +
482B ALA* 2.8 33.2 + - + +
483B GLN* 5.3 0.9 - - - +
498B LEU* 3.7 21.7 - - + +
572B PRO 3.9 15.2 + - - -
573B THR* 4.1 14.1 - - + -
574B ASP* 3.4 27.8 + - - +
577B ASN 5.2 3.4 + - - -
579B GLY 6.0 1.3 - - - -
580B GLY 3.4 25.0 - - - -
581B ASP* 4.0 2.3 + - - -
582B LEU* 3.2 55.6 - - + +
583B ASP 5.3 0.2 + - - -
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Residues in contact with GLY 480 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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580A PRO* 5.4 6.6 - - - +
476B ALA 3.6 7.0 + - - -
477B LEU 3.6 5.1 + - - -
478B ALA 2.9 2.2 + - - -
479B TYR* 1.3 82.4 - - - +
481B TYR* 1.3 63.2 + - - +
482B ALA 3.2 0.2 - - - -
483B GLN* 3.5 22.7 - - - +
485B GLN* 4.8 1.9 + - - -
581B ASP* 6.0 1.6 - - - -
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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